Magic Aire HB Series Installation, Operation And Maintenance Manual
  1. Manuals
  2. Brands
  3. Magic Aire Manuals
  4. Air Handlers
  5. HB Series
  6. Installation, operation and maintenance manual

Magic Aire HB Series Installation, Operation And Maintenance Manual

Horizontal air handler
Hide thumbs Also See for HB Series:
Table of Contents

Advertisement

Quick Links

Download this manual
Warranty Registration Form: Complete
and submit this form within ten (10) days of
start-up to comply with the terms of the
Magic Aire warranty. Form must be com-
pleted to clearly indicate startup for each
unit being registered.
Job Name
Sales Order #
Model Number
Installer
Group
Have red shipping screws been removed from blower discharge?
Does electrical service correspond to unit nameplate?
-Nameplate Supply Voltage/Phase: Rated_________ Measured___________
-Nameplate Rated FLA motor current: Rated_______ Measured__________
Does setting for overload device (factory or field-provided) match motor FLA?
Does all field wiring conform to unit wiring diagram?
Is field-provided freeze protection present? (for DX and hydronic coils)
Is fan wheel turning the correct direction?
Are mixing box dampers operating properly?
Is the filter clean?
Is unit properly supported?
Is unit installed level (necessary for proper condensate drainage)?
Is properly sized condensate trap present?
Is the condensate disposal system operating correctly?
Is auxiliary external condensate drain pan installed as recommended by IOM? (not
required for valid warranty)
Is expansion valve sensing bulb properly installed and insulated?
Is Heat Pump Bypass Kit (HPK) present if required?
Is the DX system charged per the condensing unit mfr's instructions?
Is unit piping correct and insulated to prevent condensation?
Are the control valve packages piped correctly?
Are Valve packages properly insulated?
Are there any leaks detected: interior to unit, at connections, or at valve packages?
Have customer-provided Freeze Protection measures been taken, such as Low
Limit Thermostats and glycol (antifreeze) heat transfer fluids?
Does the hydronic system include a pressure relief valve or other pressure relief
device to protect the coil from operating pressures beyond the nameplate design
working pressure rating?
Are coils equipped with control valves to stop fluid flow to save energy and prevent
cabinet condensation (wild coil in cooling) when heating/cooling is not required?
010-200002-000
AIR HANDLERS AND FAN
t ĂƌƌĂŶƚLJ  ZĞŐŝƐƚƌĂƟŽŶ ĂŶĚ ^ƚĂƌƚ-up Report
Mail form(s) to Magic Aire
Warranty Department
501 Galveston St.
Wichita Falls, TX, 76301 or
Email
customer.service@MagicAire.com
City
Unit Tag
Serial Number
Quantity of Units
STARTUP REPORT
Checklist Item
Page 1
COILS
Yes
HB IOM 1.1 2-13-2014
No

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the HB Series and is the answer not in the manual?

Questions and answers

Related Manuals for Magic Aire HB Series

Summary of Contents for Magic Aire HB Series

  • Page 1: Warranty Regristration Form

    (10) days of Warranty Department start-up to comply with the terms of the 501 Galveston St. Magic Aire warranty. Form must be com- Wichita Falls, TX, 76301 or pleted to clearly indicate startup for each Email customer.service@MagicAire.com...
  • Page 2 THIS PAGE INTENTIONALLY LEFT BLANK 010-200002-000 Page 2 HB IOM 1.1 2-13-2014...

  • Page 3: Table Of Contents

    HB Series Horizontal Air Handler Installation, Operation and Maintenance Manual /ŶƐƚĂů ů ĂƟŽŶ͕  ^ƚĂƌƚ-Up and Service /ŶƐƚƌƵĐ ƟŽŶƐ Topic Page Warranty Regristration Form SAFETY CONSIDERATIONS INTRODUCTION UNPACKING-Remove Shipping Screws PREINSTALLATION Rigging INSTALLATION Unit Suspension External Vibration Isolators Ductwork Electrical...

  • Page 4: Safety Considerations

    HB Series Horizontal Air Handler Installation, Operation and Maintenance Manual SAFETY WARNING: Magic Aire HB Series units are belt drive Installer should pay particular attention to Horizontal Air Handlers delivering nominal the following words: airflows of 400 to 8000cfm and nominal NOTE–intended to clarify or make instal-...

  • Page 5: Unpacking-Remove Shipping Screws

    DANGER UNPACKING-CAUTION! NEVER enter an enclosed fan cabinet or reach into After unpacking the blower section, a unit while the fan is running. REMOVE RED SHIPPING SCREWS LOCK OPEN AND TAG the fan motor power dis- connect switch before working on a fan. Take fuses with you and note removal on tag.

  • Page 6: Preinstallation

    Choose a dry storage site that is rea- Magic Aire holds that this practice repre- sonably level and sturdy to prevent un- sents the standard for professional instal- due stress or permanent damage to the lation whether or not this code has been unit structure or components.

  • Page 7: Installation

    INSTALLATION UNIT SUSPENSION Horizontal Units: Acceptable forms of unit sus- With Mixing Boxes: HB units sizes 30-80 with pension are shown in Fig. 3 and 4. A field- mixing boxes should be supported with cross- supplied platform mount is recommended, espe- beams at each end of the unit and at the duct cially for larger unit sizes.

  • Page 8: Ductwork

    INSTALLATION—DUCTWORK (CONT’D) DUCTWORK CONNECTIONS Install supply and return ductwork to the unit as required for the application. Note that free discharge or free return is ac- ceptable. Return Ductwork: Install return ductwork by attaching one side of a field-provided flexible duct connector to the duct flange on the return side of the unit (filter side).

  • Page 9: Electrical

    INSTALLATION-ELECTRICAL DANGER DANGER WARNING: Hazardous voltage. Only qualified NEVER enter an enclosed fan cabinet or reach into personnel must install the electrical service. Dis- a unit while the fan is running. connect and Lock Out all incoming power sources LOCK OPEN AND TAG the fan motor power dis- before connecting to electrical service.
  • Page 10 INSTALLATION-ELECTRICAL (cont’d) MOTOR START-STOP STATION TYPICAL WIRING DIAGRAMS NOTES: These diagrams represent the factory- installed MSS option. If the j-box option is provided, an arrange- ment like this may be field-provided installed to allow the customer's controls to start and stop the fan. Selection of field pro- vided installed...
  • Page 11 With 2-speed motor, make sure that only one speed winding is energized at a time. Energizing both windings simultaneously will result in motor damage and will void mo- tor warranty. Magic Aire strongly recommends use of an isolation relay or similar de- vice to insure that only one winding is energized.
  • Page 12 INSTALLATION-ELECTRICAL (cont’d) FACTORY ELECTRIC HEAT OPTION TYPICAL WIRING DIAGRAMS NOTES: 1. Motor Start/Stop Station (MSS) not required when factory-installed electric heat is selected. The electric heater contains the fan motor starter and low-voltage controls with “single-point-line” power connection. 2. See the unit wiring diagram for actual wiring. 010-200002-000 Page 12 HB IOM 1.1 2-13-2014...
  • Page 13 INSTALLATION-ELECTRICAL (cont’d) FACTORY ELECTRIC HEAT OPTION TYPICAL WIRING DIAGRAMS NOTES: 1. Motor Start/Stop Station (MSS) not required when factory-installed electric heat is selected. The electric heater contains the fan motor starter and low-voltage controls with “single-point-line” power connection. 2. See the unit wiring diagram for actual wiring. 010-200002-000 Page 13 HB IOM 1.1 2-13-2014...
  • Page 14 INSTALLATION-ELECTRICAL (cont’d) NOTES: 1. This option is not usual but may be provid- ed when custom heaters are needed. Motor Start/Stop Station (MSS) not required when AEH accessory field-installed electric heat is AUXILIARY ELECTRIC HEAT (AEH) selected. The electric heater contains the fan FIELD INSTALLED ACCESSORY motor starter and low-voltage controls with TYPICAL WIRING DIAGRAMS...

  • Page 15: Service Clearance

    HB Series Service Clearances 010-200002-000 Page 15 HB IOM 1.1 2-13-2014...

  • Page 16: Condensate Drain

    INSTALLATION Condensate Drain — To prevent excessive build- up of condensate in drain pan, adequate trap clear- once installed to ensure proper actuator ance (trap depth) must be provided beneath the unit motion. as indicated in Fig. 7. See Installation, Condensate Drain section for additional details.
  • Page 17 ACTUATOR INSTALLATION — To install the actuator: 1. Align actuator so that the actuator linkage arm will have enough clearance for full range of motion. Refer to Fig. 10-13. Align center line of the actuator as close to the centerline of DR4 as possible. See Fig.

  • Page 18: Mixing Box Air Sensor

    Mixing Box Air Sensor MIXING BOX MIXED AIR SENSOR BRACKET AS- SEMBLY — To assemble the mixed air sensor bracket assembly to the mixing box, attach mixed air sensor to mixed air sensor bracket. See Fig. 14. Fig. 16 — Enthalpy Sensor Fig.

  • Page 19: Mixing Box Linkage

    MIXING BOX LINKAGE INSTALLATION (Sizes 16-80) To install the mixing box linkage assembly on unit sizes 16 to 80: 1. Check for correct number of parts: 3 – Linkage rods 6 – Linkage arms 6 – Swivel joints NOTE: A 7/16 in. box end wrench and/or socket will be needed for linkage in- stallation.

  • Page 20: Install Sheaves On Motor And Fan Shafts

    1 to allow travel Factory-supplied drives are prealigned and ten- without interference and tighten to DR2 sioned, however, Magic Aire recommends that and DR3. the belt tension and alignment be checked be- 14. The actuator should now be able to fore starting the unit.
  • Page 21 2. Check alignment of sheaves: Fixed sheaves — To check the location of the fixed sheaves on the shafts, a straightedge or a piece of string can be used. If the sheaves are properly lined up the string will touch them at the points indicated by the arrows in Fig.

  • Page 22: Install V-Belts

    Install V-Belts — When installing or replacing belts, always use a complete set of new belts. Mixing old and new belts will result in the premature wear or breakage of the newer belts. 1. Always adjust the motor position so that V- belts can be installed without stretching over grooves.

  • Page 23: Steam Coil Piping Recommendations

    Steam Coil Piping Recommendations GENERAL — Use straps around the coil casing to lift and place the coil. CAUTION To prevent damage to the coil or coil headers: Do not use the headers to lift the coil. Support the piping and coil connections independently.
  • Page 24 NOTES (Figure 28): 1. A bypass is necessary around trap and valves when uninterrupted operation is necessary. 2. Bypass to be the same size as trap orifice but nev- er less than 1/2 inch. Fig. 30 — Multiple Coil Low Pressure Piping Gravity Return NOTES: 1.

  • Page 25: Coil Freeze-Up Protection

    Following the piping diagrams in Fig. 26-31, make all ward the condensate header. The slanting of connections while observing the following precau- the assembly ensures that condensate will tions: flow toward the drains. This condensate must • Install a drip line and trap on the pressure side of be removed through the return piping to pre- the inlet control valve.

  • Page 26: Refrigerant Piping, Direct Expansion (Dx) Coils

    SUCTION PIPING — Connect suction piping as shown NOTE: IDT coils must be installed with the tubes in Fig. 32 for face split coil. draining toward the header end of the coil. The IDT steam coils are pitched toward the header end as installed in the unit.
  • Page 27 There are three different options to control EXPANSION VALVE PIPING — Distributor nozzles and tons per circuit when using an unloading expansion valves sized for acceptable performance for a compressor. The first is to use drop solenoid range of conditions are factory supplied. Use the AHU (air- valve control as illustrated above and let the handling unit) selection program in the electronic catalog to suction cutoff unloaders “ride”...

  • Page 28: Start-Up

    START-UP Pre-Startup Building Envelope—All building windows and doors should be installed and closed before starting unit. During summer construction, avoid unit sweating by allowing for gradual pull down: use elevated chilled water temperature, reduce chilled water flow rate (gpm), use maximum available airflow. Heating Fluid Temperature-Maximum entering water tem- perature is 180°F, unless nameplate indicates 200°F.

  • Page 29: Service

    START-UP (cont’d) DANGER b. Drive misalignment. NEVER enter an enclosed fan cabinet or reach c. Mismatched, worn or loose belts. into a unit while the fan is running. d. Wheel or sheaves loose on shaft. LOCK OPEN AND TAG the fan motor power dis- e.
  • Page 30 SERVICE—Winter Shutdown (cont’d) load, with a modulating steam control valve will occasionally freeze. Freezing occurs in the 20 F to COIL CLEANING—To determine intervals for 35 F range of entering-air temperatures. A better cleaning coils in contaminated air operations, installation would be an undersize coil, with an on/ pressure taps should be installed across the coils off control valve with thermostatic control in the and checked periodically.

  • Page 31: Coil/Drain Pan Service

    SERVICE-Coil & Drainpan Removal and Reinstallation Procedure 1. Perform procedure on the ground for safety. If 4. Remove filter door and filter (Figure 36 working at heights USE EXTREME CAUTION and 37). observe all FALL SAFETY considerations. 5. Remove coil retaining screws (4ea sizes Under all conditions, LOCK OUT all power 04-20, up to 6ea sizes 30-80).
  • Page 32 SERVICE-Coil & Drainpan Removal and Reinstallation Procedure 6. Remove top panel screws at sides and rear (rear leg and coil panel) to allow top to be lifted up. Front screws can remain. Remove top filter rail. (Figure 40 and 41). WARN- ING! Insure unit is adequately supported...

  • Page 33: Water Quality Guidelines

    Poor cooling/heating water quality can cause serious problems. Ground source or open loop water quality varies and therefore should be tested to determine suitability for use with Magic Aire equipment. Test water for hardness, acidity and iron content before the equipment is installed. Poor water quality can cause one or more of the following problems: mineral deposits, sediment deposits or corrosion.

Table of Contents

Save PDF