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Dectron DRY-O-TRON Supervisaire DS 010 Operation Manual

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®
Design, Installation, Start-Up, and Operation Manual
(Attach pages as addenda to contracts & work-orders.)
FOR MODELS
DS
DSV
DB
010
010
015
015
020
020
030
030
040
040
040
042
042
042
050
050
050
060
060
060
062
062
062
080
080
080
082
082
082
100
100
100
102
102
102
120
120
120
122
122
122
150
150
150
152
152
152
162
162
164
164
182
182
184
184
202
202
204
204
242
242
244
244
282
282
284
284
362
362
364
364
368
368
402
402
404
404
408
408
482
482
484
484
488
488
562
562
564
564
568
568
804
804
808
808
Arranged by Trades and Tasks
RS
RB
010
015
020
030
040
040
042
042
050
050
060
060
062
062
080
080
Contents:
082
082
100
100
Product Description
102
102
Building Design and Construction
120
120
Receiving, Unloading, Lifting, & Locating
122
122
150
150
Installation
152
152
162
162
164
164
182
182
184
184
202
202
Testing, Adjusting, and Balancing
204
204
242
242
Startup
244
244
Operation and Maintenance
282
282
Service
284
284
362
362
364
364
368
368
402
402
404
404
408
408
482
482
For future reference,
484
484
488
488
562
562
564
564
568
568
804
804
808
808
Supervisaire
Prg
Pre-Assembly
Air Distribution, Ventilation, & Ducts
Piping
Wiring
write your model number* here ______________
write your serial number* here ______________
write your ref number* here ______________
*See Product Description - Unit Nameplate.
1
®
CONTROLLER
Esc
Prg
Esc
Data subject to change without notice.
Dectron, Inc. March 2012
Section
1
2
3
4
4a
4b
4c
4d
5
6
7
8

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  • Page 1 Operation and Maintenance Service For future reference, write your model number* here ______________ write your serial number* here ______________ write your ref number* here ______________ *See Product Description - Unit Nameplate. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 2 Dectron products only. All other rights are retained by Dectron. USER AGREEMENT: Where any differences exist between the named electronic file obtained directly from Dectron, Inc. and other versions, the named electronic file shall have precedence. Electronic versions are subject to validation by Dectron, Inc.

  • Page 3: Table Of Contents

    Supply-Duct Requirements 4b.21 Sensor Curves 8.22 Supply-Duct Heater 4b.21 Other Possible Problems 8.23 Outdoor-Air Duct 4b.23 Closing Manual Valves 8.33 Ventilation Systems 4b.24 Display Contrast 8.34 Exhaust Duct 4b.28 Checklist 4b.29 Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 4 Allow adequate time for rotating parts to stop. Follow all applicable safety regulations. Do not operate the unit until ductwork or a screen is installed at each blower outlet. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 5 Read and follow the instructions in this manual. Optional material will be noted as being optional. All other material should be considered as important to the proper function of the product. Data subject to change without notice. Dectron, Inc. March 2012...

  • Page 6: Product Description

    Today’s DRY-O-TRON ® represents years of intensive research and development by a team of highly qualified experts. Dectron has the only large-scale dehumidifier testing and envi- ronmental simulation laboratory in the industry. ® Every DRY-O-TRON...
  • Page 7 Your DRY-O-TRON ® has been perature control. At Dectron, we care about how tested at our factory by skilled you protect your investment. Dectron is the only manufacturer personnel. The installation of this state-of-the-art equipment must...
  • Page 8 During initial start-up with low specifically designed to offer a pool water temperature, all avail- complete solution for natatorium able heat is directed to the pool Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 9 Little maintenance required Δ Δ Simple operation Δ Δ Simple installation Δ Δ The basic Dectron DS series DRY-O-TRON ® units offer dehumidification of natatorium air as well as pool water heating. The optional Cooling mode offers space cooling. Horizontal Configuration Δ...

  • Page 10: Major Airflow Options

    A preset amount of outdoor air is brought in during occupied periods, and is increased only as necessary for dehumidification or cooling. For more information on the Economizer option, refer to Appendix M5 - Economizer. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 11 -20°F (-29°C). Any unit with more than 15% outdoor air must have auxiliary pool heat, which may be by others. For more information, refer to Appendix M3 - SmartSaver. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 12 This mode is one of the economizer options. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 13 COOLING COIL OUTDOOR-AIR DAMPER RETURN-AIR See subsequent page in this manual. FILTERS SUPPLY AIR RETURN RETURN AIR SUPPLY BLOWER WINTER REHEAT COIL SUMMER EXHAUST-AIR EXHAUST-AIR DAMPER DAMPER EXHAUST AIR Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 14 There are many options for duct connections. In many cases, these options can simplify duct work and lead to better airflow and better performance. Some options are illustrated here. Other options are available. Contact your Dectron representative. For outdoor units, suitable hoods are provided for outdoor air and exhaust air (if any).
  • Page 15 Remove the side panel and use it to close the top of the unit. Mount the plenum where the side panel was. (See the illustrations below.) Re-route the blower wires and re-connect them. Data subject to change without notice. Dectron, Inc. March 2012 1.10...

  • Page 16: Unit Nameplate Information

    HOT GAS: AIR COOLED COND. MODEL #: LIQUID: as shown here. Consult Dectron before exceeding the maxi- mum length of tube or changing the tube diameters. Operating conditions: Make sure unit is operating within these con- ditions.

  • Page 17: Building Construction

    Risk of uncontrolled condensation. Can cause property damage. NOTICE The information presented in this section represents Dectron’s best effort as of the time of issue. This information should be considered in all building designs incorporating a pool. Where any steps are not clear, Dectron offers technical assistance at 1-800-667-6338 or 1-800-676-2566.
  • Page 18 Read and follow the instructions in this manual. Optional material will be noted as being optional. All other material should be considered as important to the proper function of the product. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 19 Owner’s Manual DSH/DSV/RSH/DBH/RBH Series Dehumidifier Building Construction DECTRON This page intentionally left blank. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 20 70°F dew point. 50°F 10°C The dew point of this air is 70°F. Surfaces allowed to go below this temperature will sweat. 75°F 80°F 85°F 90°F 24°C 27°C 29°C 32°C Dry-Bulb Temperature Data subject to change without notice. Dectron, Inc. March 2012...

  • Page 21: Door And Window Design

    Warm, dry supply be covered with supply air flows evenly air and will sweat. along entire Multiple-glazing surface. reduces heat transfer & sweating. SEE THE INSTALLATION SECTION FOR MORE DETAILS. Data subject to change without notice. Dectron, Inc. March 2012...

  • Page 22: Component Overview

    Connect pump intake FILTER to bottom of main pipe CONTACT FACTORY IF to reduce bubbles in THE PUMP OPERATES ® the DRY-O-TRON ON A TIMER circulation loop. Never install chemical feeder here. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 23 • For attenuation of sound due to vibration • Required on any return, supply, outdoor air, and exhaust connections to the DRY-O-TRON® Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 24 NOTE: Unless equipped with a space heater, the DRY-O-TRON® does not produce significant heat - it recycles heat. A dedicated space heater must be ordered with the unit or provided by others. NOTE: Building heat losses are calculated by others and consequently are sized by others. Dectron does not select space-heater capacities.

  • Page 25: Outdoor-Air Intake

    Appendix H2 Heatco or Appendix H9 TEGA for Exclusion zone for furnaces. intakes of other equipment COMBUSTION- AIR INTAKE 10 ft 10 ft 10 ft FURNACE FURNACE DRY-O-TRON ® DRY-O-TRON ® FLUE (top view) (top view) Data subject to change without notice. Dectron, Inc. March 2012...

  • Page 26: Air-Handler Location

    Duct Connections. Vertical duct may apply. See Unit- Duct Connections. unit DECTRON I C A I C A O I L & C Horizontal unit (electrical enclosure position may vary) Data subject to change without notice. Dectron, Inc. March 2012 2.10...
  • Page 27 Sound and vibration absorbers are important. See subsequent page. Service clearances Safety switches, safety are required. See valves, fall protection, previous page. pipes, conduits, etc., are not shown. Data subject to change without notice. Dectron, Inc. March 2012 2.11...

  • Page 28: Condenser Or Drycooler Location

    For further information, see Lifting and Locating - performance. Select Remote Condenser Location. Vegetation under a fence must be kept short. minimum 12 in. (30 cm) Data subject to change without notice. Dectron, Inc. March 2012 2.12...

  • Page 29: Maximum Refrigerant-Tube Length

    The building must be able to accommodate this requirement. Where tube-length limits cannot R-22 FACTORY CHARGE R-22 TOTAL SYSTEM CHARGE AIR VOLUME BELT SIZE be met, Dectron can supply a DryCooler, which does not have this requirement. WIRING DIAGRAM AIR TEMP. °F R.H.
  • Page 30 NOTE: On special order, Dectron may be able to offer reversed blower rotation. NOTE: On special order, Dectron may be able to offer electric heaters that can be mounted on the blower outlet. NOTE: Minimum straight supply-duct lengths are not required for units equipped with plenum blowers for supply air.
  • Page 31 The better solution is to locate the return grille well away from the spa and take the room-exhaust air from above the spa. In this case, the example exhaust system would be by others. powered exhaust Data subject to change without notice. Dectron, Inc. March 2012 2.15...
  • Page 32 RIGHT the DRY-O-TRON ® return duct grille. Never allow outdoor air or air mixed with outdoor air to enter the return grille. EXHAUST OUTDOOR OUTLET AIR INTAKE Data subject to change without notice. Dectron, Inc. March 2012 2.16...
  • Page 33 O/A preheat without or with the air-conditioning option SmartSaver option 150°F 50°F 100°F -20°F 0°F 32°F 66°C 10°C 38°C -29°C -18°C 0°C Intake-Air Temperature Data subject to change without notice. Dectron, Inc. March 2012 2.17...

  • Page 34: Ducts

    Δ Register with double deflection and Window volume control. Window set set to inside to outside RIGHT WRONG Dry air reaches all the window. Air cannot reach the lower part of the window. Data subject to change without notice. Dectron, Inc. March 2012 2.18...
  • Page 35 ASHRAE 111-2008, whichever is greater. For this purpose, the effective duct diameter E L is given by E L = √ 4ab / π duct-traversing plane Data subject to change without notice. Dectron, Inc. March 2012 2.19...
  • Page 36 (b) insulated on the inside, with moisture-resistant insulation and an integral vapor retarder toward the center of the duct, or (c) both. A I R I N T DECTRON Data subject to change without notice. Dectron, Inc. March 2012 2.20...

  • Page 37: Fire/Smoke Detectors

    Service access requires that all doors and panels be easily operable and that all service spaces between pipes and other components remain open for entry and exit. Dectron accepts no responsibility for delays, extra costs, or other damages due to misplacement of a fire/smoke detector by others.

  • Page 38: Air Distribution

    Air speeds over a pool surface should be 10 to 50 FPM (0.05 to 0.25 m/s) in heating mode. Note that temperature and humidity buoyancy effects should be considered. Dectron offers computerized analysis of airflows. For tall or very tall windows, more complex supply-diffuser placements may be necessary. See Installation - Air Distribution and Installation - Ducts in this manual for further considerations.
  • Page 39 Air speeds over a pool surface should be 10 to 50 FPM (0.05 to 0.25 m/s) in heating mode. Note that temperature and humidity buoyancy effects should be considered. Dectron offers computerized analysis of airflows. For tall or very tall windows, more complex supply-diffuser placements may be necessary. See Installation - Air Distribution and Installation - Ducts in this manual for further considerations.
  • Page 40 In the example at right, the supply air is directed at the pool surface. The resulting air speed at the water surface will increase DECTRON the evaporation rate. The increase may lead to uncontrolled humidity levels. Data subject to change without notice. Dectron, Inc. March 2012 2.24...
  • Page 41 9. Do not direct air over pool surface. 10. Temporarily cover return grille(s) with paper or plastic to prevent entry of construction dusts. 11. See other requirements elsewhere in this section. Data subject to change without notice. Dectron, Inc. March 2012 2.25...
  • Page 42 10. Install 90° elbow and use acoustic insulation up to elbow only to eliminate air movement noise (see also Duct Design guidelines) 11. Temporarily cover return grille(s) with paper or plastic to prevent entry of construction dusts. 12. See other requirements elsewhere in this section. Data subject to change without notice. Dectron, Inc. March 2012 2.26...
  • Page 43 9. When installed for a natatorium, do not direct air over pool surface. 10. Temporarily cover return grille(s) with paper or plastic to prevent entry of construction dusts. 11. See other requirements elsewhere in this section. Data subject to change without notice. Dectron, Inc. March 2012 2.27...
  • Page 44 Multiple return grilles may also be required. Also see other requirements elsewhere in this section. Ex: horizontal concrete beams DECTRON NOTE: Multiple return grilles may be necessary. Data subject to change without notice. Dectron, Inc. March 2012 2.28...
  • Page 45 Never position a supply diffuser such that supply air will be drawn Supply Diffuser into the return grille. Doing so may result in erroneous sensor readings and mode oscillation. Return Grille Data subject to change without notice. Dectron, Inc. March 2012 2.29...

  • Page 46: Fabric Duct

    This allows preventing rotation. the supply air to miss the upper part of the window. Upper part of window will sweat. Entire window is protected. DECTRON Data subject to change without notice. Dectron, Inc. March 2012 2.30...

  • Page 47: Pool-Chemical Storage Facility

    Chemical-Storage Room (separate positive ventilation Equipment Room from and to the outdoors) (may contain other equipment) Natatorium Wall-ceiling joint must be carefully sealed DECTRON against air leakage. Pool Data subject to change without notice. Dectron, Inc. March 2012 2.31...

  • Page 48: Pool-Water Chemistry

    Pool water quality is not only a health coupled with proper pool water treatment Dectron has taken all commercially and comfort problem, it also affects the will reduce this problem. feasible precautions to protect the DECTRON performance of mechanical equipment.
  • Page 49 Appendix C7 - Shared Sensor Adapter for special requirements. Where units must be stored for longer than two months, refer to Appendix M4 - Unloading and Storage for special requirements. Data subject to change without notice. Dectron, Inc. March 2012 2.33...
  • Page 50 (See Building hot tub, etc. (See Building Construction - Air Handler Construction - Spa/Return- Ref. No. _________________ your your initials Location.) Grille Placement.) initials Name _________________ Tel. _________________ Data subject to change without notice. Dectron, Inc. March 2012 2.34...

  • Page 51: Receiving, Unloading, Lifting, And Locating

    NOTICE Risk of property damage. The information presented in this section represents Dectron’s best effort as of the time of issue. This information should be considered in receiving, unloading, transporting, and installing the equipment. Dectron does not warrant that this information is complete for any particular application.
  • Page 52 Risk of damage from improper storage. Can cause property damage. NOTICE If the unit must be stored before installation, request, read, and follow the instructions in Appendix M4, Storing Units. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 53 Owner’s Manual DSH/DSV/RSH/DBH/RBH Series Dehumidifier Lifting and Locating This page intentionally left blank. Data subject to change without notice. Dectron, Inc. March 2012...

  • Page 54: Select Air Handler Location

    AIR TEMP.: °F R.H.: R-22 TOTAL SYSTEM CHARGE: MAX. LENGTH OF REF. LINES (ONE WAY) BETWEEN D.O.T. & REMOTE CONDENSER: LINE SIZE: HOT GAS: AIR COOLED COND. MODEL #: LIQUID: Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 55 See also Appendices H6, H7, or H8 for boilers or Appendices H2 or H9 for furnaces. INTAKE 10 ft 10 ft 10 ft FURNACE FURNACE DRY-O-TRON ® DRY-O-TRON ® FLUE (top view) (top view) Data subject to change without notice. Dectron, Inc. March 2012...

  • Page 56: Minimum Service Clearances

    Minimum lengths of straight Duct Connections. unit duct may apply. See Unit- Duct Connections. DECTRON I C A I C A O I L & C Horizontal unit (electrical enclosure, position may vary) Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 57 2. The cost of repair or replacement due to any loss or damage to the filter box, filters, dampers, actuators, sensors, heat exchangers, wiring, fasteners, or other affected parts or assemblies resulting from such dis-assembly and/or re-assembly, whether functional or cosmetic, is not covered by the warranty. Data subject to change without notice. Dectron, Inc. March 2012...

  • Page 58: Door Clearances

    2. The cost of repair or replacement due to any loss or damage to the filter box, filters, dampers, actuators, sensors, heat exchangers, wiring, fasteners, or other affected parts or assemblies resulting from such dis-assembly and/or re-assembly, whether functional or cosmetic, is not covered by the warranty. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 59 Where large units must be installed overhead, provide suitable under-base support with a service mezzanine. The support must include horizontal stabilization. See section Lifting & Locating - Overhead Air Handler. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 60 Independent tests have shown that condensate from a DRY-O-TRON® unit is safe (these reports are available from Dectron). The amount of water returned to the pool over an entire year is approximately equal to the entire swimming pool water volume! The ideal way to return the condensate to the pool water system is gravity drainage to the nearest skimmer or surge tank (if so equipped).

  • Page 61: Unit Support

    Service clearances are required. See Lifting and Locating - Select Air Handler Location. Safety switches, safety valves, fall protection, pipes, conduits, etc., are not shown and are by others. Data subject to change without notice. Dectron, Inc. March 2012 3.11...

  • Page 62: Lifting Air Handler

    Inspect your unit immediately for shipping damage. Claims for shipping damage must be made with the shipping company. Dectron is not responsible for shipping damage. Your unit has been factory tested for proper operation. Inspect the unit carefully upon arrival.
  • Page 63 Inspect your unit immediately for shipping damage. Claims for shipping damage must be made with the shipping company. Dectron is not responsible for shipping damage. Your unit has been factory tested for proper operation. Inspect the unit carefully upon arrival.
  • Page 64 12 inches above grade may cause recirculation of heated air and a corresponding reduction in performance. Vegetation under a fence must be kept short. minimum 12 in. (30 cm) Data subject to change without notice. Dectron, Inc. March 2012 3.14...

  • Page 65: Remote Condenser Or Drycooler

    12 inches above grade may cause recirculation of heated air and a corresponding reduction in performance. Vegetation under a fence must be kept short. minimum 12 in. (30 cm) Data subject to change without notice. Dectron, Inc. March 2012 3.15...

  • Page 66: Vibration Isolation

    DECTRON Condenser DryCooler Suitable Fasteners Anti-Vibration Pad (by others) (by others) at at each foot each foot Mounting Frame (by others) Data subject to change without notice. Dectron, Inc. March 2012 3.16...
  • Page 67 Some units may not have a remote condenser. Some outdoor units may come with the condenser already mounted to the unit base. Some units may have a remote DryCooler. In this case, please refer to Dectron OM Appendix M1-DryCooler. Condensers Without Lifting Eyes Only IMPORTANT! Inspect your unit immediately for shipping damage.
  • Page 68 Some outdoor units may come with the condenser already mounted to the unit base. Some units may have a remote DryCooler. In this case, please refer to Dectron OM Appendix M1-DryCooler. If you suspect the unit was damaged in transit, immediately notify the freight carrier and file a claim with the carrier.
  • Page 69 Risk of property damage. Risk of uncontrolled condensation. Can cause property damage. The information presented in this section represents Dectron’s best effort as of the time of issue. Compliance with the requirements and recommendations in this section should produce a successfull installation.

  • Page 70: Installation

    Depending on the size and location of this product, some installation, service, and maintenance procedures could expose personnel to the risk of injury or death by falling. Designs should include adequate service and maintenance access. Use fall- protection equipment as appropriate. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 71 Read and follow the instructions in this manual. Optional material will be noted as being optional. All other material should be considered as important to the proper function of the product. Data subject to change without notice. Dectron, Inc. March 2012...

  • Page 72: Component Overview

    (by others) • For vibration isolation • For attenuation of sound due to vibration • Required on any return, supply, outdoor air, and exhaust connections to the DRY-O-TRON® Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 73 Connect pump intake FILTER to bottom of main pipe CONTACT FACTORY IF to reduce bubbles in THE PUMP OPERATES ® the DRY-O-TRON ON A TIMER circulation loop Never install chemical feeder here. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 74 (optional) Hoists, lifts, etc., as needed (optional) Extension cords (optional) Stepladder and other ladders, etc., as needed (optional) Dectron submittal or other sales documents (optional) Torque wrench, with sockets and other wrenches, as needed (optional) Torque screwdriver (for electrical connections) Data subject to change without notice.
  • Page 75 Optional Equipment - Some units may have hoods to prevent the entry of rain, ice, snow, etc. NOTICE Such hoods, if any, may be shipped separately. Optional Equipment - Some units may have outdoor-air preheaters by Dectron. Such heaters, if any, may be shipped separately. On units having hoods, duct ports, or outdoor-air preheaters, these devices and any associated dampers and actuators may ship separately.
  • Page 76 7. Relocate the mounting brackets as required. 8. Attach the blower to its mounting brackets in the horizontal position. 9. Install an appropriately sized belt, align and re-tension. 10. Install rubberized gasket around blower opening. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 77 Remove the side panel and use it to close the top of the unit. Mount the plenum where the side panel was. (See the illustrations below.) Re-route the blower wires and re-connect them. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 78 Owner’s Manual DSH/DSV/RSH/DBH/RBH Series Dehumidifier DECTRON This page intentionally left blank. Data subject to change without notice. Dectron, Inc. March 2012 4.10...
  • Page 79 Other operation may greatly increase pool evaporation. Recommended Minimum Temperatures for Interior Surfaces Relative Room Dry Bulb Temperature °F Humidity % Recommended Interior Surface Temperature to Prevent Condensation (°F) Data subject to change without notice. Dectron, Inc. March 2012 4b.1...
  • Page 80 Air speeds over a pool surface should be 10 to 50 FPM (0.05 to 0.25 m/s) in heating mode. Note that temperature and humidity buoyancy effects should be considered. Dectron offers computerized analysis of airflows. For tall or very tall windows, complex supply-diffuser placements may be necessary. See Installation - Air Distribution and Installation - Ducts in this manual for further considerations.
  • Page 81 Air speeds over a pool surface should be 10 to 50 FPM (0.05 to 0.25 m/s) in heating mode. Note that tempera- ture and humidity buoyancy effects should be considered. Dectron offers computerized analysis of airflows. For tall or very tall windows, complex supply-diffuser placements may be necessary. See Installation - Air Distribution and Installation - Ducts in this manual for further considerations.
  • Page 82 In the example at right, the supply air is directed at the pool surface. The resulting air speed at the water surface will increase the evaporation rate. The increase may DECTRON lead to uncontrolled humidity levels. Data subject to change without notice. Dectron, Inc. March 2012 4b.4...
  • Page 83 9. Do not direct air over pool surface. 10. Temporarily cover return grille(s) with paper or plastic to prevent entry of construction dusts. 11. See other requirements elsewhere in this section. Data subject to change without notice. Dectron, Inc. March 2012 4b.5...
  • Page 84 10. Install 90° elbow and use acoustic insulation up to elbow only to eliminate air movement noise (see also Duct Design guidelines) 11. Temporarily cover return grille(s) with paper or plastic to prevent entry of construction dusts. 12. See other requirements elsewhere in this section. Data subject to change without notice. Dectron, Inc. March 2012 4b.6...
  • Page 85 9. When installed for a natatorium, do not direct air over pool surface. 10. Temporarily cover return grille(s) with paper or plastic to prevent entry of construction dusts. 11. See other requirements elsewhere in this section. Data subject to change without notice. Dectron, Inc. March 2012 4b.7...
  • Page 86 Multiple return grilles may also be required. Also see other requirements elsewhere in this section. Ex: horizontal concrete beams DECTRON NOTE: Multiple return grilles may be necessary. Data subject to change without notice. Dectron, Inc. March 2012 4b.8...
  • Page 87 Never position a supply diffuser such that supply air will be drawn into the Supply Diffuser return grille. Doing so may result in erroneous sensor readings and mode oscillation. Return Grille Data subject to change without notice. Dectron, Inc. March 2012 4b.9...
  • Page 88 Upper part of window will sweat. Entire window is protected. Data subject to change without notice. Dectron, Inc. March 2012 4b.10...
  • Page 89 Some options may have special duct requirements. If your unit is equipped with the optional SmartSaver feature, refer to Dectron OM Appendix M3 - SmartSaver. If your unit is equipped with the optional economizer feature, refer to Dectron OM Appendix M5 - Economizer.
  • Page 90 Δ Register with double deflection and Window volume control. Window set set to inside to outside RIGHT WRONG Dry air reaches all the window. Air cannot reach the lower part of the window. Data subject to change without notice. Dectron, Inc. March 2012 4b.12...
  • Page 91 • • Failure to set the airflow rates to within 10% of the specified values will result in performance reduction. • • Duct design must conform to the ASHRAE low-pressure, low-velocity duct standards. If there is a question concerning duct design, sizing, choice of materials, air velocities, or static pressures, contact your Dectron representative for assistance.
  • Page 92 O/A preheat without or with the air-conditioning option SmartSaver option 150°F -20°F 0°F 32°F 50°F 100°F 66°C -29°C -18°C 10°C 38°C 0°C Intake-Air Temperature Data subject to change without notice. Dectron, Inc. March 2012 4b.14...
  • Page 93 DECTRON Model Size Supply-air Supply blower (CFM) I.W.C. (HP) 1000 1200 2000 3000 3800 4800 5500 6500 8200 11000 13500 15000 16000 19000 20000 25000 32000 40000 50000 65000 Data subject to change without notice. Dectron, Inc. March 2012 4b.15...
  • Page 94 Bullhead Tee Required Backflow Dampers Do not duct two or more DRY-O-TRON® units in series, unless so instructed in writing by Dectron. Data subject to change without notice. Dectron, Inc. March 2012 4b.16...
  • Page 95 Temporarily cover the return grille with paper or plastic to prevent concrete or plaster dust from entering the return duct. This cover should be removed after all such dusts have been cleaned up and removed. Data subject to change without notice. Dectron, Inc. March 2012 4b.17...
  • Page 96 NOTE: Do not allow any air other than room air to enter the return duct. Do not allow outdoor air or air mixed with outdoor air to enter the return duct. Data subject to change without notice. Dectron, Inc. March 2012 4b.18...
  • Page 97 The better solution is to locate the return grille and the spa well away from each other and exhaust the air above the spa. In this case, the spa-exhaust system should be by others. powered exhaust Data subject to change without notice. Dectron, Inc. March 2012 4b.19...
  • Page 98 Do not operate the unit when dusts are present or while the grille cover is still in place. Important! Never use the DRY-O-TRON ® as a construction-site dehumidifier, cooler, or heater. Do not operate the unit while construction dusts are present. Data subject to change without notice. Dectron, Inc. March 2012 4b.20...
  • Page 99 5 times the duct width downstream from the blower, or from any airflow interruptions such as elbows and transitions. On special order, for some models Dectron may be able to provide special close-coupled duct heaters that Duct Isolator do not require the minimum straight length of duct. The minimum straight length before an elbow, tee, offset, transition, or other flow interruption will still apply.
  • Page 100 NOTE: Some blowers may be oriented differently. In this case, the orientation of the heater follows the orientation of the blower. Data subject to change without notice. Dectron, Inc. March 2012 4b.22...
  • Page 101 Some options may have special ventilation-duct requirements. If your unit is equipped with the optional SmartSaver feature, refer to Dectron OM Appendix M3 - SmartSaver. If your unit is equipped with the optional economizer feature, refer to Dectron OM Appendix M5 - Economizer.
  • Page 102 Power supply for controlled by DRY-O- ventilation TRON® All outdoor air inlets must 5. Make-up air (provide air have a separate air filter. filters) 6. Modulating thermostat (by others) Data subject to change without notice. Dectron, Inc. March 2012 4b.24...
  • Page 103 Separate systems must not change the pressure or flow in ducts connected to the unit, must not deliver outdoor air to the return duct, and must not allow mixed air to enter the unit return duct. Data subject to change without notice. Dectron, Inc. March 2012 4b.25...
  • Page 104 DRY-O-TRON ® return duct grille. RIGHT WRONG Never allow outdoor air or air mixed with outdoor air to enter the return grille. EXHAUST OUTDOOR OUTLET AIR INTAKE Data subject to change without notice. Dectron, Inc. March 2012 4b.26...
  • Page 105 WRONG WRONG WRONG Vertical Units Vertical Units Horizontal Units Sizes 010 - 080 Sizes 100 - 152 A I R A I R Data subject to change without notice. Dectron, Inc. March 2012 4b.27...
  • Page 106 AIR COOLED COND. MODEL #: HOT GAS: LIQUID: For units equipped with the optional SmartSaver feature, the exhaust-duct temperature may go below the dew point of the surrounding air. DECTRON Data subject to change without notice. Dectron, Inc. March 2012 4b.28...
  • Page 107 SmartSaver feature, vapor retarder. initials settling inside the duct. the duct instructions of Dectron OM Appendix M3 - Duct heaters (if any, by others) your SmartSaver have been are installed more than 5 duct initials followed. diameters downstream from...
  • Page 108 To prevent the build-up of pressure, remove the cores from the access valves in the condenser tubes inside the unit, and limit the flow of gas. Use only enough shielding gas to force the air out of the tubes. Data subject to change without notice. Dectron, Inc. March 2012 4c.1...
  • Page 109 Risk of uncontrolled condensation. Can cause property damage. NOTICE This product is intended to control relative humidity and temperatures. Improper design, installation, and/or operation can lead to uncontrolled condensation of water, with associated property damage. Data subject to change without notice. Dectron, Inc. March 2012 4c.2...
  • Page 110 If your unit is equipped with an optional Raypak Hi-Delta gas boiler (models 302B - 902B), request and refer to Dectron OM Appendix H7 - Raypak 1000.501C HiDelta Boilers 302B-902B. If your unit is equipped with an optional Raypak Hi-Delta gas boiler (models 992B-2342B), request and refer to Dectron OM Appendix H8 - Raypak 1000.511B HiDelta boilers 992B-2342B.
  • Page 111 Other 50379 C22.2 NO. 236 FABRIQUÉ AU CANADA / MADE IN CANADA code requirements may also apply. Data subject to change without notice. Dectron, Inc. March 2012 4c.4...
  • Page 112 If the tube caps are to be heated for removal, the tube grommets, access valves, and isolation valves must be protected from heat by wrapping the tubes with wet towels or by applying a commercial heat-trapping compound. Data subject to change without notice. Dectron, Inc. March 2012 4c.5...
  • Page 113 For remote condensers at the same level as the DRY-O-TRON ® , contact Dectron before exceeding the tube size or maximum contact Dectron before exceeding the tube size or maximum tube tube length, both of which are specified on the unit nameplate.
  • Page 114 Some DRY-O-TRON® units may have several pairs of tubes to the remote condenser. Only one pair of tubes is shown here. Further piping details are discussed on following pages. Data subject to change without notice. Dectron, Inc. March 2012 4c.7...
  • Page 115 Other code requirements may also apply. Only one set of tubes shown. WRONG Concept applies to all tubes. Further piping details are discussed on following pages. Data subject to change without notice. Dectron, Inc. March 2012 4c.8...
  • Page 116 1. American Welding Society 550 N.W. LeJeune Road Filler should penetrate Miami, Florida 33126 entire brazing socket by www.aws.org capillary action. Data subject to change without notice. Dectron, Inc. March 2012 4c.9...
  • Page 117 Other code requirements may also apply. Some DRY-O-TRON® units may have several pairs of tubes to the remote condenser. Only one pair of tubes is shown here. Data subject to change without notice. Dectron, Inc. March 2012 4c.10...
  • Page 118 B4. Consult the Dectron Service air-cooled condenser have the O.D. specified Department at 1-800-667-6338. on the unit nameplate, proceed to step A5. B5. If Dectron provides a new pre- Otherwise, proceed to step B4. TOTAL SYSTEM CHARGE determined oil charge, write that value A5.
  • Page 119 Yellow Jacket 19000 Isolation valves inside condenser tube stubs. the DRY-O-TRON® must be Other code requirements left closed until evacuation may also apply. is complete. Data subject to change without notice. Dectron, Inc. March 2012 4c.12...
  • Page 120 (250g) of refrigerant is reclaimed from the filter-drier or the pressure is reduced below 10 PSIG immediately after closing the valves. The refrigeration circuit is now open to the remote condenser. Data subject to change without notice. Dectron, Inc. March 2012 4c.13...
  • Page 121 UNITS WITH AIR-COOLED AIR CONDITIONING ONLY ADDING PRE-DETERMINED AMOUNT OF OIL NOTE: If a pre-determined amount of oil was not specified by Dectron, skip this page. NOTICE Optional Equipment. Where an air-cooled condenser is present, follow the instructions in this manual and in all applicable codes.
  • Page 122 DRY-O-TRON , unless ® your For units with air cooled air initials Dectron has been consulted. conditioning, the remote con- P-traps have been provided denser and the connecting (by others) at the specified tubes were evacuated to a your initials locations.
  • Page 123 IMPORTANT! Pipe chases must be closed and sealed before installation is complete. IMPORTANT! In some cases, pipe chases may be subject to fire-stopping requirements. Consult local codes and the local code-enforcement authority. Data subject to change without notice. Dectron, Inc. March 2012 4c.16...
  • Page 124 Owner’s Manual DSH/DSV/RSH/DBH/RBH Series Dehumidifier This page intentionally left blank. Data subject to change without notice. Dectron, Inc. March 2012 4c.17...
  • Page 125 Pre-Assembly of Flow Switch Flow switch has three Flow switch (supplied by paddles, two of which can Dectron, may require installation be removed, as needed, by others) for proper fit in pipe tee. Bushing, as needed,...
  • Page 126 NOTICE Optional Equipment. Where the unit has water-cooled air conditioning, follow the instructions in this manual and in all applicable codes. All tubes, pipes, conduits, etc., must be Water-flow switch (supplied by Dectron, installed by others) screws 1/2” (12 cm) separately supported by others. Supports into a pipe tee (by others).
  • Page 127 100 (379) 160 (606) 120 (454) 242, 178 (674) (400) 140 (530) 210 (795) 140 (530) 276 (1045) 240 (909) 375 (1420) 280 (1060) 437 (1654) Pressure Drop PSI (MPa) Data subject to change without notice. Dectron, Inc. March 2012 4c.20...
  • Page 128 Connections to heating fluid system (by others) or hot water heating have external valves Port locations may vary. See the unit labels. (supplied by Dectron, installed by others). Install Flexible Connectors (by others) and connect this valve with its accompanying tube assembly as shown.
  • Page 129 Where outdoor temperatures below freezing may occur, releasing condensate onto a roof is not recommended. P-trap NOTE: Any required drain vents may not be shown here. Data subject to change without notice. Dectron, Inc. March 2012 4c.22...
  • Page 130 (12) is used.) controlled by timers. In this case, allows the use of non-metallic piping · should be installed in the lowest consult Dectron for a suggested piping (Sch. 40 CPVC is recommended point of the water return line modification.
  • Page 131 240 (909) 104 (394) 208 (787) 120 (454) 240 (909) 160 (606) 320 (1211) 160 (606) 320 (1211) 160 (606) 320 (1211) 240 (909) 480 (1817) 240 (909) 480 (1817) Data subject to change without notice. Dectron, Inc. March 2012 4c.24...
  • Page 132 (by others) fully inserted into the hose. Hose barbs should be plastic or other material suitable for pool-water. Rubber Hose (by Dectron) Clamp the hose to the barb with two hose clamps, with the adjustment screws on opposite sides of the hose. See Hose Barb illustration at right.
  • Page 133 Where rigid pipe is used, use a flexible connector to prevent the application of torques to the unit’s pipe stubs. NOTE: Units with rubber-hose connections (by Dectron) do not require flexible connectors or unions. Piping support (by others) is required.
  • Page 134 DryCooler, water flow will be available sate pipe slopes downward a) confirm that the flowswitch for the DRY-O-TRON®. A away from the unit at least (supplied by Dectron, booster pump may be your your ¼" per foot of run. initials...
  • Page 135 Pipes, conduits, etc., should not be routed along the floor near a unit. Where this must be done, construct a working platform (by others) to allow access without damage. Data subject to change without notice. Dectron, Inc. March 2012 4d.1...
  • Page 136 If your unit is equipped with an optional Raypak Hi-Delta gas boiler (models 122-322), refer to Dectron OM Appendix H6 - Raypak 1000.53E HiDelta Boilers 122-322 . If your unit is equipped with an optional Raypak Hi-Delta gas boiler (models 302B - 902B), refer to Dectron OM Appendix H7 - Raypak 1000.501C HiDelta Boilers 302B-902B .
  • Page 137 IMPORTANT! Remove the temporary cover before applying electric power. Horizontal unit shown. Concept applies to vertical units also. temporary paper or plastic cover for electrical components DECTRON Data subject to change without notice. Dectron, Inc. March 2012 4d.3...
  • Page 138 NOTE: The blower running direction can be used to test phase sequence. For units with air-cooled air conditioning, wire the remote condenser according to the wiring diagram provided with it. Insure that the fan motors turn in the correct direction. Data subject to change without notice. Dectron, Inc. March 2012 4d.4...
  • Page 139 Connect input power here. Use copper wire only. Torque all connectors per NEC 110-14, UL486A, or relevant code. Conduit seals are required. See previous page. Data subject to change without notice. Dectron, Inc. March 2012 4d.5...
  • Page 140 L1 L2 L3 NEC 110-14, UL486A, or relevant code. C1 I1 For rotation testing, if any, jumper C1 to I1 and/or C2 to I2 only. Never push a contactor by hand. Data subject to change without notice. Dectron, Inc. March 2012 4d.6...
  • Page 141 AIR TEMP.: °F R.H.: R-22 TOTAL SYSTEM CHARGE: MAX. LENGTH OF REF. LINES (ONE WAY) BETWEEN D.O.T. & REMOTE CONDENSER: LINE SIZE: HOT GAS: AIR COOLED COND. MODEL #: LIQUID: Data subject to change without notice. Dectron, Inc. March 2012 4d.7...
  • Page 142 ON LED Do not adjust the voltage should be on. monitor without the explicit If it is not on, or is flashing, see instructions from Dectron. the following page for more details. Delay (sec) Be sure the Vmin time delay Vmax (%Ue) is set to 10 seconds.
  • Page 143 Voltages below this level will result in motor overheating. Do not Delay (sec) Vmax (%Ue) adjust the voltage monitor without explicit instructions from Dectron. Have a qualified electrician fix the problem and re-apply electrical power. The voltage monitor should be normal as shown above.
  • Page 144 There compartment may also be a strong positive pressure inside the electrical enclosure. A conduit seal is required to prevent condensation throughout the conduit system. Data subject to change without notice. Dectron, Inc. March 2012 4d.10...
  • Page 145 Insert 6P6C modular telephone plug (by others) into the modular Y (by DECTRON Dectron). Use the port not already used for the in-unit display (if any). If no Y is present, plug the cable At each end of the cable, loop the into J10.
  • Page 146 (Colors are for example only, colors may vary by cable vendor.) TOP VIEW END VIEW END VIEW WHITE WHITE BLACK BLACK GREEN DECTRON GREEN YELLOW YELLOW BLUE BLUE SIDE VIEW END VIEW END VIEW Data subject to change without notice. Dectron, Inc. March 2012 4d.12...
  • Page 147 Optional Remote Display Unit Controller Insert 6P6C modular tele- phone plug (by others) into the For cable lengths not modular Y (by Dectron). Use the port not already used for exceeding 650 ft (200m) - the in-unit display (if any). DECTRON...
  • Page 148 3. Belden The six-pin modular telephone plug (by others) Ph. 314-854-8000 is to be inserted into the display jack. www.belden.com 4. Digi-Key Corp. 1-800-344-4539 www.digikey.com Data subject to change without notice. Dectron, Inc. March 2012 4d.14...
  • Page 149 Snap the front cover over the display. NOTE: The display may show “NO LINK” if the DRY-O-TRON® is powered. This is normal, and will be corrected under the STARTUP section. Data subject to change without notice. Dectron, Inc. March 2012 4d.15...
  • Page 150 22 - 16 AWG having uncoated PVC or PE insulation. Do not use coated PVC or PE insulation. Do not use Teflon, Tefzel, Kynar, Kapton, Silicone Rubber, or Hypalon insulation. Data subject to change without notice. Dectron, Inc. March 2012 4d.16...
  • Page 151 ® terminal 264 Dectron. Seal all conduits attached to dehumidifiers. Similar circuits are used for any other space heaters. See the unit field-wiring diagram in the unit information package. Data subject to change without notice. Dectron, Inc. March 2012 4d.17...
  • Page 152 1kΩ. Do not overload this output. The output voltage range can be modified in the field for Seal all conduits 0-10VDC at 10mA, and/or for reverse action. Contact Dectron for instructions. attached to NOTE: External space heaters should be provided with dehumidifiers.
  • Page 153 60Hz. Do not overload these outputs. Do not attempt to use supply blower an internal DRY-O-TRON® power source unless so directed runs. by Dectron. terminal 69 Seal all conduits attached to dehumidifiers. Data subject to change without notice. Dectron, Inc. March 2012 4d.19...
  • Page 154 DRY-O-TRON® will enable the auxiliary pool-water heater. The DRY-O-TRON® dry contacts are rated 5A at 24VAC 60Hz. Do not attempt to use an internal DRY-O-TRON® power source unless so directed by Dectron. POOL#2 AUXILIARY WATER HEATER Note: An auxiliary pool-water heater is recommended for all installations.
  • Page 155 20 20 20 18 16 12 use an internal DRY-O-TRON ® power source unless so directed by Dectron. 20 20 20 18 14 10 20 20 20 16 14 10 In some cases the size of the control wire may have to be increased to allow for 20 20 18 16 14 10 contactor inrush.
  • Page 156 OPTIONAL REMOTE VENTILATION ® DRY-O-TRON (BY OTHERS) (OPTIONAL POWER BY DECTRON) Some units may be equipped with a line-item option called terminal 2J34 “Power Supply for Ventilation”, where up to 80 VA at 24 VAC To ventilation...
  • Page 157 5A at 24VAC 60Hz. Do not overload general alarm these outputs. Do not attempt to use an internal DRY-O- (by others). terminal 1J28 ® TRON power source unless so directed by Dectron. Seal all conduits attached to dehumidifiers. DIRTY-FILTER ALARM (OPTIONAL) ®...
  • Page 158 J27 0.9 in Temperature (2.3 cm) Temp. Sensor terminal J28 No. 8 Mounting Screw 20 AWG shielded cable 350 ft (106 m) maximum Seal all conduits attached to dehumidifiers. Data subject to change without notice. Dectron, Inc. March 2012 4d.24...
  • Page 159 OUT PWR configuration may have to be changed. INSIDE TERMINALS 1 in (2.5 cm) 20 AWG shielded cable 350 ft (106 m) maximum Seal all conduits attached to dehumidifiers. Data subject to change without notice. Dectron, Inc. March 2012 4d.25...
  • Page 160 If the outdoor RH transmitter connects to the PCOE extension module, then enter 5V below and go to the Main Controller next page. PCOE extension module My outdoor-air RH sensor voltage is Data subject to change without notice. Dectron, Inc. March 2012 4d.26...
  • Page 161 COM OUT PWR TEMP COM OUT PWR Set pin jumper Set pin jumper VOLTAGE VOLTAGE to VOLTAGE. to VOLTAGE. CURRENT CURRENT DECTRON Outdoor RH Outdoor RH Transmitter Board Transmitter Board Data subject to change without notice. Dectron, Inc. March 2012 4d.27...
  • Page 162 DRY-O-TRON® power source unless so Seal all conduits terminal 86 directed by Dectron. attached to dehumidifiers. OPTIONAL PURGE-MODE SUPPLY-SENSOR INSTALLATION Some DRY-O-TRON® units may be provided with the optional Purge mode (see Product Description). In this case, there is the further option of having the space heater inside the DRY-O-TRON®...
  • Page 163 Some installations may have more than two pools connected to the unit. Where this is the case, refer to the unit- wiring diagram and repeat the above steps as necessary. Data subject to change without notice. Dectron, Inc. March 2012 4d.29...
  • Page 164 Control Signals Units with Water-Cooled Air Conditioning Only The water-flow switch (supplied by Dectron, installed by others) screws 1/2” (12 cm) into a pipe tee (by others) in the inlet-water pipe. NOTE: The switch may be factory installed, in which case no installation steps are required.
  • Page 165 An open circuit between these terminals will cause the to stop DRY-O-TRON® to execute an orderly shutdown, including unit. terminal D7 blowers. Seal all conduits attached to dehumidifiers. Data subject to change without notice. Dectron, Inc. March 2012 4d.31...
  • Page 166 Air must not be allowed to move through a chase. IMPORTANT: In some cases, pipes chases may be subject to fire-stopping requirements. Consult applicable codes. Data subject to change without notice. Dectron, Inc. March 2012 4d.32...
  • Page 167 Dectron OM described in Dectron OM Appendix C7 - Shared Sensor Appendix M1 - DryCooler have your initials For units equipped with the Adapter have been been accomplished.
  • Page 168 Model No. ________________ confirm that a suitable branch circuit has been properly Serial No. ________________ connected to the service- your Ref. No. _________________ initials power lugs. Name _________________ Tel. _________________ Data subject to change without notice. Dectron, Inc. March 2012 4d.34...
  • Page 169 The flows must be measured and set within 10% of the stated values. The information presented in this section represents Dectron’s best effort as of the time NOTICE of issue.
  • Page 170 Freezing or other abnormal conditions could cause leakage or overflow. Uncontrolled water can cause expensive damage to buildings and other equipment. Do not locate this product above any equipment that could be damaged by water. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 171 Owner’s Manual DSH/DSV/RSH/DBH/RBH Series Dehumidifier T.A.B. This page intentionally left blank. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 172 Such units may have lift-out return-air filters accessible through a door. Filters for outdoor air must be moisture resistant. The location, size, and number of filters may vary. Return-Air Connection Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 173 These filters may be lift-out or may have draw tabs. Filters for outdoor air must be moisture resistant. The location, size, and number of filters may vary. Refer to Appendix M5. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 174 The location, size, and number of filters may vary. Return-Air Filter(s) Some units may be provided with an optional gas-phase filter, such as Chloraguard®. In this case, refer to Dectron Owners Manual Appendix M2-Chloraguard®. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 175 (D). Use shims under the rear springs if necessary. B. rear A. forward spring bolt spring bolt C. wooden blocks Remove all loose materials from the inside of the unit. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 176 6.3 pounds of force to produce the 1/2 inch deflection. Adjust the belt tension until the measured force necessary to produce the 1/2 inch deflection is about 6.3 pounds. belt tensioning screw Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 177 3.65 - 4.12 Sheave Sheave 4.5 - 5.6 6.0 - 10.6 4.4 - 8.5 19.2 16.7 13.0 9.0 - 11.8 23.3 20.3 15.6 Straight edge 27.3 23.8 18.5 12.5 - 16.0 Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 178 If your unit has the Purge feature and/or the EconoPurge® feature, refer to owners manual Appendix M6 for air-balancing procedures. If your unit does not have the SmartSaver, economizer, or Purge options, then follow the instructions on the next page. Data subject to change without notice. Dectron, Inc. March 2012 5.10...
  • Page 179 In this case, the damper position will be set in software. For units with economizer or Purge options, refer to the instructions in the Purge or economizer appendices. Data subject to change without notice. Dectron, Inc. March 2012 5.11...
  • Page 180 Be sure to close and secure them before starting the blower. Air Compartment Doors (Air compartment doors on the other side are not shown.) Data subject to change without notice. Dectron, Inc. March 2012 5.12...
  • Page 181 Never run the blower without the filters in place. Regardless of filters, never run the blower when construction dust is present. The resulting damage is not covered by the Dectron warranty. Risk of electric shock. Can cause injury or death.
  • Page 182 Prg settings. settings. any exist. to access HELP screens. DECTRON The backlit LCD screen displays any needed information on the operation of the system. Data subject to change without notice. Dectron, Inc. March 2012 5.14...
  • Page 183 4. Determine the interface address. I/O Board address : bb For units made before October 2011, aa = 0 unless otherwise instructed by Dectron Go to step 5. For units made after October 2011, aa should be determined as shown here: (If any) located on unit.
  • Page 184 If this screen does not appear, check that the unit has an electrically operated damper for outdoor-air intake. If not, the screen above will not appear, and all adjustments are manual. In some cases, outdoor-air intake may be by others. Data subject to change without notice. Dectron, Inc. March 2012 5.16...
  • Page 185 Press the attaching screw through the label at a line marked with an X. Tighten the screw. Place a stop adapter to block the OUTDOOR AIR damper from opening beyond the required position. Data subject to change without notice. Dectron, Inc. March 2012 5.17...
  • Page 186 PRESS ESC TO EXIT ENTER TO CONFIRM Allow two minutes for the dampers to move to their new positions. Confirm that the outdoor-air intake damper(s) is in the correct position. Data subject to change without notice. Dectron, Inc. March 2012 5.18...
  • Page 187 Never run the blower without the filters in place. Regardless of filters, never run the blower when construction dust is present. The resulting damage is not covered by the Dectron warranty. Risk of contact with moving parts. Can cause injury or death.
  • Page 188 Do not alter any factory-installed wires. 1. For an explanation of an alarm, press Prg while the alarm message is being displayed. For a list of alarm messages, see Operation - Alarm Messages. Data subject to change without notice. Dectron, Inc. March 2012 5.20...
  • Page 189 AIR TEMP.: °F R.H.: R-22 TOTAL SYSTEM CHARGE: MAX. LENGTH OF REF. LINES (ONE WAY) BETWEEN D.O.T. & REMOTE CONDENSER: LINE SIZE: AIR COOLED COND. MODEL #: HOT GAS: LIQUID: Data subject to change without notice. Dectron, Inc. March 2012 5.21...
  • Page 190 ON LED Do not adjust the voltage should be on. monitor without explicit If it is not on, or is flashing, see instructions from Dectron. the following page for more details. Delay (sec) Be sure the Vmin time delay Vmax (%Ue) is set to 10 seconds.
  • Page 191 Voltages below this level will result in motor overheating. Do not Vmax (%Ue) Delay (sec) adjust the voltage monitor without explicit instructions from Dectron. Have a qualified electrician fix the problem and re-apply electrical power. The voltage monitor should be normal as shown above.
  • Page 192 In this case, compare the tilt of the vanes on the blower wheel to the diagrams at right. The direction of rotation should be as shown here. Forward Curved Data subject to change without notice. Dectron, Inc. March 2012 5.24...
  • Page 193 Use shims under the springs as necessary. B. rear A. forward spring bolts spring bolts Data subject to change without notice. Dectron, Inc. March 2012 5.25...
  • Page 194 NOTE: If the chemical-storage area is inside the building, it should be constantly maintained at the lowest pressure in the building. Data subject to change without notice. Dectron, Inc. March 2012 5.26...
  • Page 195 Exhaust- Air BOX J would be 23%. Twenty-three percent is larger than 19%, therefore other Flow Rate arrangements must be made to bring in that amount of outdoor air. Data subject to change without notice. Dectron, Inc. March 2012 5.27...
  • Page 196 Measured Exhaust-Air Flow Copy BOX D from previous page. Exhaust- Air Flow Rate DECTRON Required Supply-Air Flow Supply- Air Copy BOX A from previous page. Measured Supply-Air Flow Flow Rate Data subject to change without notice. Dectron, Inc. March 2012 5.28...
  • Page 197 Dectron document. NOTE: An auxiliary pool heater may be by others Standard Standard or may be provided by Dectron. Where by Pool-Water Flows Pool-Water Flows Dectron, it may be built onto the unit. GPM (LPM) GPM (LPM) 5.
  • Page 198 On the field-wiring terminal strip, locate those wires and jumper them together. There are several possibilities for terminal strip styles - see diagrams below. The presence of the jumper should bring on the cooling-water pump, open necessary valves, etc. Temporary Jumper Data subject to change without notice. Dectron, Inc. March 2012 5.30...
  • Page 199 Units with optional water-cooled air conditioning must have a constant flow of water that is at or below 90°F. Where this cannot be achieved, contact Dectron. Contact Dectron before changing to any fluid other than water. NOTE: Some sites may require cooling even during cool weather. Water flow must be available at all times.
  • Page 200 Remove and retain the flowswitch cover. Do not allow objects to fall onto the inner workings. NOTE: Do not turn this screw without expressed instructions from Dectron. Adjust the flow switch using only this set-point adjustment screw. Do not turn any other screws. Do not bend frames.
  • Page 201 On the field-wiring terminal strip, locate those wires and jumper the pairs together. There are several possibilities for terminal strip styles - see diagrams below. The presence of the jumper(s) should bring on the DryCooler. Data subject to change without notice. Dectron, Inc. March 2012 5.33...
  • Page 202 Measured DryCooler Circuit 4 (if any)-Water Flow 375 (1420) 376 (1423) 376 (1423) 437 (1654) Remove the jumper(s) installed on first page 420 (1590) previous. 428 (1620) 640 (2423) 640 (2423) Data subject to change without notice. Dectron, Inc. March 2012 5.34...
  • Page 203 Be sure that the water or fluid temperature is near 180°F (82°C), and Indoor Unit not less than 160°F (71°C), unless otherwise specified by Dectron. Note the size of the connections on the unit. Adjust the flow rate to achieve the desired maximum space-heating rate.
  • Page 204 UP/ DOWN TO CHANGE ENTER TO CONFIRM ↓ ↓ ↑ ↑ ↵ ↵ ENTER OCCUPIED SELECTION USER PASSWORD FOLLOWS SCHEDULE 00000 UP/ DOWN TO CHANGE PRESS ESC TO EXIT ENTER TO CONFIRM Data subject to change without notice. Dectron, Inc. March 2012 5.36...
  • Page 205 If possible and safe to do so, leave the electrical power connected to the unit and leave the blower overload ON. This will allow the compressor crankcase heater(s) to function. The crankcase heaters must be on continuously for at least 12 hours before the compressors are started. Data subject to change without notice. Dectron, Inc. March 2012 5.37...
  • Page 206 Confirm that all ducts, diffusers, grilles, dampers, etc., were unobstructed during all airflow measurements. For units with the SmartSaver, economizer, or Purge options, confirm that procedures given in the your initials appropriate Dectron manual appendix were followed. your initials Confirm that all damper stops (if any) are set.
  • Page 207 Any errors in installation, balancing, or startup will be obvious in operation. The information presented in this section represents Dectron’s best effort as of the time NOTICE of issue. Compliance with the requirements and recommendations in this section should produce a proper startup of the equipment.

  • Page 208: Startup

    Depending on the size and location of this product, some startup procedures could expose personnel to the risk of injury or death by falling. Designs should include adequate service and maintenance access. Use fall- protection equipment as appropriate. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 209 Freezing or other abnormal conditions could cause leakage or overflow. Uncontrolled water can cause expensive damage to buildings and other equipment. Do not locate this product above any equipment that could be damaged by water. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 210 The thermostats must be adjusted at installation, using the diagrams below and on the next page. FAN ARRANGEMENT CONDENSER CONTROL ENCLOSURE fan thermostats, 1 refrigeration labeled “T1”, “T2”, etc. circuit 1 refrigeration circuit 2 refrigeration circuits Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 211 1 refrigeration circuit 2 refrigeration circuits 1 refrigeration circuit 2 refrigeration circuits 1 refrigeration circuit 2 refrigeration circuits 1 refrigeration circuit 2 refrigeration circuits 1 refrigeration circuit 2 refrigeration circuits Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 212 Except for vertical units size 040 and larger, it should close for evaporator- leaving-air temperatures below a preset value. For DSV units size 040 and larger, confirm that the minimum damper opening is 35% open. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 213 Carefully test all refrigerant tubes, refrigerant components, and tube joints (including factory joints) for leaks, using a reliable electronic leak detector. Repair all leaks as necessary. Data subject to change without notice. Dectron, Inc. March 2012...

  • Page 214: Pre-Startup Checklist

    Name _________________ initials can be operated on demand. Installation - Air Distribution initials - Fabric Duct. Tel. _________________ ) _ _ _ - _ _ _ _ Completed by _________________________________ Ph. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 215 (if any) has been installed per initials have been removed. published standards and the Serial No. ________________ ) _ _ _ - _ _ _ _ Completed by _________________________________ Ph. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 216 See Installation - Model No. ________________ Wiring - Power and Serial No. ________________ Installation - Wiring - your initials Control Signals. Ref. No. _________________ Name _________________ Tel. _________________ Data subject to change without notice. Dectron, Inc. March 2012 6.10...
  • Page 217 Model No. ________________ Confirm that any dampers, Serial No. ________________ actuators, hoods, etc., shipped Ref. No. _________________ separately are properly installed. See Installation - your Name _________________ Pre-Assembly. initials Tel. _________________ Data subject to change without notice. Dectron, Inc. March 2012 6.11...
  • Page 218 START. motor, press STOP. To disable a motor, press STOP. START STOP STOP START STOP START DECTRON Risk of unit damage. NOTICE Call Dectron before changing the trip points. Data subject to change without notice. Dectron, Inc. March 2012 6.12...

  • Page 219: Controller Interface

    Prg settings. settings. any exist. to access HELP screens. DECTRON The backlit LCD screen displays any needed information on the operation of the system. Data subject to change without notice. Dectron, Inc. March 2012 6.13...
  • Page 220 ↓ ↓ ↑ ↑ This screen is the gateway to other screens used for service GO TO SERVICE MENU monitoring or modification. Consult Dectron or a Dectron- certified technician. Data subject to change without notice. Dectron, Inc. March 2012 6.14...

  • Page 221: Set Internal Clock

    3 = Wednesday 4 = Thursday 5 = Friday 6 = Saturday 7 = Sunday MIDNIGHT TO NOON NOON TO MIDNIGHT Use this. Use this. 10:10 22:10 10:10 A.M. 10:10 P.M. Data subject to change without notice. Dectron, Inc. March 2012 6.15...

  • Page 222: Set Occupied Periods

    If an occupied period is not necessary, set ↓ ↓ ↑ ↑ beginning hour, beginning minute, ending hour, and ending minute to zero. SATURDAY OCCUPIED aa:bb TO cc:dd ee:gg TO hh:ii kk:nn TO pp:rr Data subject to change without notice. Dectron, Inc. March 2012 6.16...
  • Page 223 Owner’s Manual DSH/DSV/RSH/DBH/RBH Series Dehumidifier This page intentionally left blank. Data subject to change without notice. Dectron, Inc. March 2012 6.17...

  • Page 224: Prepare To Adjust Expansion Valve(S)

    (especially the ends) against the turbulent airflow that will form inside the cabinet. Cable must be able to reach outside the unit cabinet. GO TO NEXT PAGE. Data subject to change without notice. Dectron, Inc. March 2012 6.18...
  • Page 225 Cable must be read with the unit running. Expansion able to reach outside the unit Valve cabinet. GO TO NEXT PAGE. Probe TXV Bulb Insulation Foil Data subject to change without notice. Dectron, Inc. March 2012 6.19...
  • Page 226 11. Close all access panels or doors. Start the unit per the instructions given in Startup - Enable Operation. The expansion valve(s) will be adjusted after the compressor is started, on a subsequent page. Data subject to change without notice. Dectron, Inc. March 2012 6.20...

  • Page 227: Check / Add Oil

    The oil may appear slightly foamy until 30 minutes after the expansion valve is properly adjusted. After the expansion valve(s) is adjusted, the oil should not appear foamy. If the oil appears to be foaming after 30 minutes of operation after the expansion valve is adjusted, contact Dectron. Data subject to change without notice.

  • Page 228: Enable Operation

    Once startup is completed, all portions of the “Startup Report and Warranty Registration” form must be completely filled in and a copy must be sent to the Dectron factory in order to register and validate the warranty. A copy can be faxed to the factory office at 514-334-9184.
  • Page 229 ↓ ↓ compressors Follow the procedures above for ↑ ↑ each compressor in turn. COMPRESSOR #7 Off COMPRESSOR #8 Off Data subject to change without notice. Dectron, Inc. March 2012 6.23...
  • Page 230 NOTE: The evaporator pressure may not be stable for a few minutes. This is normal. If instability persists, it should be corrected when the expansion valve is adjusted (see following instructions). Data subject to change without notice. Dectron, Inc. March 2012 6.24...
  • Page 231 Cooling or dehumidification by ventilation is enabled in the event of compressor failure or no air-conditioning option. ZERO REHEAT ON Supply air temperature is limited to the return air temperature. Data subject to change without notice. Dectron, Inc. March 2012 6.25...

  • Page 232: Set Point Adjustment

    F is the pool #2 temperature set point (optional). If a change is ↵ ↵ desired, press as needed to move the cursor to ggg F, then press ↑ ↑ ↓ ↓ to change the set point. Data subject to change without notice. Dectron, Inc. March 2012 6.26...

  • Page 233: Read Sensors

    This screen displays the temperature of the hot refrigerant gas DISCHARGE 1 TEMP READING . . . xxxF leaving the #1 compressor. This is important to a proper startup. See Startup - TXV Adjustment. to other readings Data subject to change without notice. Dectron, Inc. March 2012 6.27...

  • Page 234: Adjust Expansion Valve(S)

    Controller Messages.), then temporarily decrease the humidity set point to cause it to do so. (See Startup - DECTRON Adjust Set Points) 3. Be sure that the refrigerant sight glass is completely full of liquid, with no bubbles. If bubbles are present, return to step 1 or contact Dectron. DRY-O-TRON ® MODEL #: SERIAL #: I.D.
  • Page 235 2. In the unit control enclosure, remove the temporary jumper across the pressure switch labeled “CLP” as shown. Where more than one refrigeration circuit is present, be sure to identify the correct CLP switch. 3. Close all covers. Data subject to change without notice. Dectron, Inc. March 2012 6.29...

  • Page 236: Check Discharge Sensor

    10°F (4°C). If it GO TO INDOOR HUMIDITY SENSOR READINGS does not, be sure your thermometer is READING . . . xxx % accurate, then contact Dectron if necessary. ↓ ↓ Press repeatedly to reach the appropriate screen.
  • Page 237 (red and yellow) reliably. 7. Replace the switch cover. If possible and safe to do so, leave the pool water flowing. 8. Repeat as necessary for other pool-water pressure switches (if any). Data subject to change without notice. Dectron, Inc. March 2012 6.31...

  • Page 238: Adjust Pool Heating

    READING . . . xxxF the correct pool-water heat exchanger. If Valve B is not present, skip to step 5. ↓ ↓ If Valve B is present, call Dectron at 1-800-667-6338 ↑ ↑ or 1-800-676-2566. POOL 1 OUT TEMP 5. Temporarily adjust set points to cause the unit to READING .
  • Page 239 Owner’s Manual DSH/DSV/RSH/DBH/RBH Series Dehumidifier This page intentionally left blank. Data subject to change without notice. Dectron, Inc. March 2012 6.33...
  • Page 240 After final adjustments are made, ensure that the Start-up Report and Warranty Registration form is completely filled in and a copy returned to the Dectron factory to register the warranty. Leave the Owner’s Manual and the completed start-up form with the DRY-O-TRON ®...

  • Page 241: Check Pressures

    Outdoor Unit Sight glass in door aligns with compressor sight glass. Outdoor units (RS, RB) have Oil Sight Glass refrigerant sight glasses located behind transparent windows in access panels. Data subject to change without notice. Dectron, Inc. March 2012 6.35...
  • Page 242 In some cases Dectron may be able to provide Dectron personnel to supervise the startup procedure for a fee. In this case, the Dectron employee will travel to the site and supervise, guide, and assist the contractor in the start- up.
  • Page 243 Model # Serial # Comp 6 Comp 6 Model # Serial # Comp 7 Comp 7 Model # Serial # Comp 8 Comp 8 Model # Serial # Data subject to change without notice. Dectron, Inc. March 2012 6.37...

  • Page 244: Warranty Registration

    L2 - L3 (3Φ Φ only) L3 - L1 (3Φ Φ only) L1 - L2 Nameplate Compressor Voltage (V) (when all running) if any Compressor Current(s) (A) (when all running) (3Φ Φ only) Nameplate Data subject to change without notice. Dectron, Inc. March 2012 6.38...
  • Page 245 (By Compressor #) Average TX Valve Bulb Temperature (°F) (By Compressor #) Compressor Discharge-Gas Temperature (°F) (By Compressor #) Temperature of Air Leaving Cooling- Coil (°F) (By Compressor #) Data subject to change without notice. Dectron, Inc. March 2012 6.39...
  • Page 246 Attach copies of the completed and signed air-balance and water-balance reports. Attach copies of the completed and signed Pre-Startup Checklist. Attach any desired further comments or explanatory material. Send all of the above to: DECTRON INC. DECTRON INC. 4300 Poirier Boulevard 10898 Crabapple Road Montreal, QC.
  • Page 247 Pool Chemistry 7.19 Heating and Cooling Availability 7.20 Logical Flow Charts 7.21 Controller Interface 7.25 User Interface Map 7.26 Read Status Messages 7.28 Set-Point Adjustments 7.30 Read Sensors 7.31 Warranty 7.32 Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 248 Depending on the size and location of this product, some operation and maintenance procedures could expose personnel to the risk of injury or death by falling. Designs should include adequate service and maintenance access. Use fall- protection equipment as appropriate. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 249 Risk of unit damage. NOTICE If service or repair requires the closing of manual refrigerant valves, follow the procedures in Service-Closing Manual Valves. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 250 Δ Clean the coils with a solution of mild soap in warm water. Do not use corrosive cleaning agents. Δ Increase the frequency of filter replacement. Dirty filters leak dirt onto the coils. In the event of an extended shutdown, contact Dectron for a copy of Appendix M4 - Storing Units. Data subject to change without notice.

  • Page 251: Maintenance Record

    Set Point Pool 1 pH Pool 1 Combined Chlorine Pool 2 pH Pool 2 Combined Chlorine Equipment room and all connecting rooms clear of all chemicals? Model _______________ Serial Number _______________ Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 252 Heat-transfer fluid OK? Electric motors lubricated? Blower bearings For specific schedules, see Operation- OK and greased? Maintenance-Blower Lubrication Air-side heat- transfer coils clean? Model _______________ Serial Number _______________ Data subject to change without notice. Dectron, Inc. March 2012...

  • Page 253: Air Filters

    Filters FILTER units have lift-out return-air filters accessible through a door. Filters for outdoor air must be moisture resistant. The location, size, and number of filters may Return-Air vary. Connection Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 254 78°F (25.6°C). If the room temperature at startup is above 78°F (25.6°C), a manual evaporator bypass damper should be fully open. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 255 Combustion-air filters should be checked. Heat may be required at any time. Some units may be provided with the optional Chloraguard® filter. In this case, refer to Appendix M2 - Chloraguard®. Data subject to change without notice. Dectron, Inc. March 2012...

  • Page 256: Blower Belts

    1/2 inch deflection. Adjust the belt tension until the measured force necessary to produce the 1/2 inch deflection is about 6.3 pounds. belt tensioning screw Data subject to change without notice. Dectron, Inc. March 2012 7.10...
  • Page 257 3.65 - 4.12 Sheave Sheave 4.5 - 5.6 6.0 - 10.6 4.4 - 8.5 19.2 16.7 13.0 9.0 - 11.8 23.3 20.3 15.6 Straight edge 27.3 23.8 18.5 12.5 - 16.0 Data subject to change without notice. Dectron, Inc. March 2012 7.11...
  • Page 258 10. Wipe off any excess grease that has appeared on the outside of the motor or shaft. 11. Clean and re-install the grease outlet plug. 12. If safe and practical to do so, return the motor to operation. Data subject to change without notice. Dectron, Inc. March 2012 7.12...
  • Page 259 NOTE: Grease the bearings before an extended shutdown or storage. NOTE: During an extended shutdown, rotate the blower shaft monthly. Data subject to change without notice. Dectron, Inc. March 2012 7.13...
  • Page 260 Check Refrigerant Level Maintenance Be sure there are no bubbles or droplets in the refrigerant sight glasses after ten minutes of compressor operation. If bubbles or droplets are noted, contact Dectron or a Dectron-certified technician. Horizontal Unit Bubbles in the sight glass indicate problems such as a possible loss of refrigerant.
  • Page 261 The oil level should be as near the middle of the sight glass as possible, and in any case between 1/4 and 3/4 full. If the oil level is incorrect after 30 minutes of compressor operation, contact a Dectron-certified technician. Risk of compressor damage.
  • Page 262 ↵ ↵ PERFORMING Press to proceed with the MANUAL RESET ENTER TO CONFIRM resetting process. ESC TO CANCEL Press Esc to cancel the ↵ ↵ resetting process. Display returns. Data subject to change without notice. Dectron, Inc. March 2012 7.16...
  • Page 263 Compressor No. 1 READING. . . xxxF Discharge Temperature ↓ ↓ Press repeatedly to reach screen below. DISCHARGE 2 TEMP Compressor No. 2 (if any) READING. . . xxxF Discharge Temperature Data subject to change without notice. Dectron, Inc. March 2012 7.17...

  • Page 264: Drain Pans

    The drain pan should be checked to be sure it drains completely and to be sure material is not accumulating. Drain Pan Data subject to change without notice. Dectron, Inc. March 2012 7.18...

  • Page 265: Pool Chemistry

    0.2 PPM 0.5 PPM Combined Chlorine *1500 over 1500 PPM* 1500 PPM* Dissolved Solids startup value 200 - 400 PPM 1000 PPM 150 - 250 PPM Calcium Hardness 800 PPM Data subject to change without notice. Dectron, Inc. March 2012 7.19...
  • Page 266 NOTE: Unless equipped with a space heater, the DRY-O-TRON® does not produce significant heat - it recycles heat. A dedicated space heater must be ordered with the unit or provided by others. NOTE: Building heat losses are calculated by others and consequently are sized by others. Dectron does not select space-heater capacities.

  • Page 267: Logical Flow Charts

    Outdoor Temp Installed Sensor Sensor Signal Installed? Not installed Compare to Below set point Changeover Temp Block ventilation Changeover Set Energize Set point point ventilation system Above set point Data subject to change without notice. Dectron, Inc. March 2012 7.21...
  • Page 268 Set point Above Below Above set point set point set point Energize A/C hot Energize pool gas solenoid water hot gas Run Compressor valve. Run solenoid valve outdoor condenser fan Data subject to change without notice. Dectron, Inc. March 2012 7.22...
  • Page 269 A/C hot gas sole- Set point noid valve run out- Stage 2 door condenser fan Close auxiliary Above water heater set point contact Compressor Running? Energize pool water hot gas solenoid valve Data subject to change without notice. Dectron, Inc. March 2012 7.23...
  • Page 270 Owner’s Manual DSH/DSV/RSH/DBH/RBH Series Dehumidifier Setup DECTRON This page intentionally left blank. Data subject to change without notice. Dectron, Inc. March 2012 7.24...
  • Page 271 Prg settings. settings. any exist. to access HELP screens. DECTRON The backlit LCD screen displays any needed information on the operation of the system. Data subject to change without notice. Dectron, Inc. March 2012 7.25...
  • Page 272 Sensors displayed and order of display may vary depending on options. DECTRON Data subject to change without notice. 7.26...
  • Page 273 Sensors displayed and order of display may vary depending on options. DECTRON Data subject to change without notice. 7.27...

  • Page 274: Read Status Messages

    In this case, refer to the Sequence of Operation supplied with the unit. Press Esc repeatedly to return to the main menu or the default screen. Data subject to change without notice. Dectron, Inc. March 2012 7.28...
  • Page 275 Cooling or dehumidification by ventilation is enabled in the event of compressor failure or no air-conditioning option. ZERO REHEAT ON Supply air temperature is limited to the return air temperature. Data subject to change without notice. Dectron, Inc. March 2012 7.29...

  • Page 276: Set-Point Adjustments

    F is the pool #2 temperature set point. If a change is desired, ↵ ↵ ↑ ↑ ↓ ↓ press as needed to move the cursor to ggg F, then press to change the set point. Data subject to change without notice. Dectron, Inc. March 2012 7.30...

  • Page 277: Read Sensors

    This screen displays the temperature of the hot refrigerant gas DISCHARGE 1 TEMP READING . . . xxxF leaving the #1 compressor. This is important to a proper startup. See Startup - TXV Adjustment. to other readings Data subject to change without notice. Dectron, Inc. March 2012 7.31...

  • Page 278: Warranty

    Force Majeure Remainder of 25-Month Warranty Dectron Inc. will not be liable for delay or misuse, abuse, fire, flood, alteration Upon expiry of the initial 30-day warran- failure to provide warranty service due to...
  • Page 279 Dectron Inc. fails because of extended warranties must be made a defect in workmanship or material, before shipment of the unit. Dectron Inc. will furnish a new or rebuilt Does not cover labor costs. part F.O.B. factory. No reimbursement...
  • Page 280 Owner’s Manual DSH/DSV/RSH/DBH/RBH Series Dehumidifier This page intentionally left blank. Data subject to change without notice. Dectron, Inc. March 2012 7.34...
  • Page 281 Piping Wiring Safety Testing, Adjusting, and Balancing Startup Troubleshooting Operation and Maintenance Controller-Diagnosed Alarms Service Temperature-Sensor Curves 8-22 Other Possible Problems 8-23 Closing Manual Valves 8-33 Adjusting Display Contrast 8-34 Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 282 Depending on the size and location of this product, some installation, service, and maintenance procedures could expose personnel to the risk of injury or death by falling. Designs should include adequate service and maintenance access. Use fall- protection equipment as appropriate. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 283 This product is intended to control relative humidity and temperatures. Improper design, installation, and/or operation can lead to uncontrolled condensation of water, with associated property damage. Read and follow the instructions in this manual. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 284 Service Troubleshooting Alarms Dectron has a list of contractors who have been trained by Dectron to install and service this product. Please call 1-800-676-2566 or 1-800-667-6338 to find the contractor nearest your site. If the alarm button is illuminated, press it to see the current alarm(s).
  • Page 285 Check for continuity of overload device auxiliary switch • Replace as necessary Replace overload device as necessary. Defective overload device Contact Dectron or your Dectron representative for referral to a Dectron-certified technician. Data subject to change without notice. Dectron, Inc. March 2012...
  • Page 286 See Installation - Locate Remote Condenser. • Be sure the remote condenser is clean. • Improperly adjusted pressure Consult Dectron or a Dectron-certified control valve(s) technician. • Return air temperature too high Be sure set points correspond to those shown on the unit nameplate.
  • Page 287 Your display will been running for at least ten minutes. If this actually show a number is not the case, consult Dectron or a Dectron- associated with a partic- certified technician. ular refrigeration circuit.
  • Page 288 20 feet above the DRY-O-TRON®, be sure the hot- gas riser tube(s) have P-traps as specified in this manual. • Excessive compressor wear Consult Dectron or a Dectron-certified technician. • Compressor oil pump failure Consult Dectron or a Dectron-certified technician.
  • Page 289 A qualified person should adjust or replace the overload as necessary. • COMPRESSOR X Leaking liquid line solenoid valve Consult Dectron or a Dectron-certified PUMPDOWN TOO technician. LONG, • Leaking hot gas bypass valve(s) Consult Dectron or a Dectron-certified where “X”...
  • Page 290 • Be sure the refrigerant expansion valve is properly adjusted. • Be sure the pressure control valves have not been adjusted. Contact Dectron or a Dectron-certified technician. • Be sure the sensor cable is properly DISCHARGE X The signal from the compressor...
  • Page 291 Compare the resistance of the sensor itself to the sensor resistance chart. Replace sensor if necessary. Connect sensor and cable to controller. EXPANSION MODULE • Cable or addressing problem Consult Dectron or a Dectron-certified COMMUNICATION technician. FAILURE FIRESTAT ALARM • Fire or smoke present Be sure there is no fire.
  • Page 292 CHECKS & CORRECTIONS • A general failure of an associated GAS BOILER ALARM Consult the boiler manual. DECTRON gas boiler supplied by Dectron. • Excessive glycol viscosity GLYCOL PUMP OVER- Be sure the glycol is of the proper type and LOAD concentration.
  • Page 293 5 ohms. If either condition fails, replace cable. Compare the resistance of the sensor itself to the sensor resistance chart. Replace sensor if Defective sensor necessary. Connect sensor and cable to controller. Data subject to change without notice. Dectron, Inc. March 2012 8.13...
  • Page 294 5 ohms. If either condition fails, replace cable. Defective sensor • Compare the resistance of the sensor itself to the sensor resistance chart. Replace sensor if necessary. Connect sensor and cable to controller. Data subject to change without notice. Dectron, Inc. March 2012 8.14...
  • Page 295 • Defective pool water pressure Set as discussed in Startup - Adjustments. switch. If the switch cannot be adjusted, contact Dectron for a replacement. • Sensor cable disconnected Be sure the sensor cable is properly POOL 1 OUT SENSOR FAULT connected to both the sensor and the controller.
  • Page 296 Pool water flow rate too high Be sure the pool water flow rate is as POOL 1 PERFOR- specified. MANCE ALARM • Pool water temperature sensors Consult Dectron or a Dectron-certified POOL 2 PERFOR- not calibrated technician. MANCE ALARM • Loss of refrigeration capacity Be sure the refrigerant sight glass is full.
  • Page 297 AIR TEMP.: °F R.H.: R-22 TOTAL SYSTEM CHARGE: MAX. LENGTH OF REF. LINES (ONE WAY) BETWEEN D.O.T. & REMOTE CONDENSER: LINE SIZE: HOT GAS: AIR COOLED COND. MODEL #: LIQUID: Data subject to change without notice. Dectron, Inc. March 2012 8.17...
  • Page 298 ON LED Do not adjust the voltage should be on. monitor without the explicit If it is not on, or is flashing, see instructions from Dectron. the following page for more details. Delay (sec) Be sure the Vmin time delay Vmax (%Ue) is set to 10 seconds.
  • Page 299 Voltages below this level will result in motor overheating. Do not Vmax (%Ue) Delay (sec) adjust the voltage monitor without explicit instructions from Dectron. Have a qualified electrician fix the problem and re-apply electrical power. The voltage monitor should be normal as shown above.
  • Page 300 5 ohms. If either condition fails, replace cable. • Compare the resistance of the sensor itself Defective sensor to the sensor resistance chart. Replace sensor if necessary. Connect sensor and cable to controller. Data subject to change without notice. Dectron, Inc. March 2012 8.20...
  • Page 301 5 ohms. If either condition fails, replace cable. • Compare the resistance of the sensor itself Defective sensor to the sensor resistance chart. Replace sensor if necessary. Connect sensor and cable to controller. Data subject to change without notice. Dectron, Inc. March 2012 8.21...
  • Page 302 Use this chart for the 7000 temperature range 6000 50°F to 150°F. 5000 4000 3000 2000 1000 Temperature (°F) 1000 Use this chart for the temperature range 150°F to 250°F. Temperature (°F) Data subject to change without notice. Dectron, Inc. March 2012 8.22...
  • Page 303 To check the valve adjustment: 1. Close the isolation valves for the outdoor condenser. 2. Run the unit in A/C mode. 3. The head pressure should rise to approximately 325 PSI. Data subject to change without notice. Dectron, Inc. March 2012 8.23...
  • Page 304 Check pressure switch adjustment. • Loose control or power wiring Check for electrical continuity under load. • Water exit temperature above Check the water flow rate. 120°F • Clear the fault code. Data subject to change without notice. Dectron, Inc. March 2012 8.24...
  • Page 305 • Low voltage may cause failure to Use adequate branch circuit conductors. start Consult Dectron for the use of a hard-start (Long inadequately-sized kit (single phase units only). branch circuit conductors may • cause low voltage at inrush.) Consult Dectron for recommendations.
  • Page 306 If bubbles are visible in the sight glass, the refrigeration effect. measure the liquid temperature on either side of the filter drier. A drop of more than 2°F is unacceptable. • Replace the liquid line filter-drier. Data subject to change without notice. Dectron, Inc. March 2012 8.26...
  • Page 307 NOTE: Building heat losses are calculated by others and consequently are sized by others. Dectron does not select space- heater capacities. • Set point too high Room temperature...
  • Page 308 4. Allow at least 12 hours for the crankcase heater to warm up at initial startup. This will remove from the crankcase any liquid refrigerant that has accumulated during shipping and storage. Data subject to change without notice. Dectron, Inc. March 2012 8.28...
  • Page 309 Correct duct design as necessary. evaporator. • Excessive total airflow can cause Set total airflow by test to the value shown high air velocities in the on unit nameplate. evaporator. Data subject to change without notice. Dectron, Inc. March 2012 8.29...
  • Page 310 An incorrectly set expansion Adjust the expansion valve to produce at valve can cause liquid refrigerant least 160°F compressor discharge gas flood back to the compressor temperature. with accompanying noise. Data subject to change without notice. Dectron, Inc. March 2012 8.30...
  • Page 311 (see unit wiring diagram) is zero. if heat remains on, replace the relay. • Corrosion or clogging of Missing or dirty filters Replace as needed. heat exchangers Data subject to change without notice. Dectron, Inc. March 2012 8.31...
  • Page 312 Condenser pressure Normal for up to 3 minutes after If oscillation continues more than 10 minutes oscillates more than compressor starts after compressor starts, contact Dectron or a 5 PSIG Dectron-certified technician. Data subject to change without notice. Dectron, Inc.
  • Page 313 This will provide enough volume for the remaining refrigerant to expand without damaging components. 7. Retain the reclaimed refrigerant for return to the unit after the service is complete. Data subject to change without notice. Dectron, Inc. March 2012 8.33...
  • Page 314 To increase the contrast, simultaneously press and hold the until the contrast is correct. and Prg and ↓ ↓ buttons To decrease the contrast, simultaneously press and hold the until the contrast is correct. Data subject to change without notice. Dectron, Inc. March 2012 8.34...

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