Related Manuals for Zehnder Rittling VS Series
Summary of Contents for Zehnder Rittling VS Series
- Page 1 Vertical Stack Water Source Heat Pump Installation, Operation and Maintenance Heating Cooling Fresh Air Clean Air...
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Page 2: Table Of Contents
Nomenclature General information Dimensions and data Safety considerations Installation Applications Electrical data Installation Wiring diagrams Start-up Maintenance Replacement parts IMPORTANT: Submittal documentation, specific to Troubleshooting each project, supersedes the general guidelines Warranty Back cover contained within this manual. -
Page 3: Nomenclature
Nomenclature VS series, complete unit 1, 2, 3 5, 6 12, 13 24, 25 – Unit type Special option codes VHN = Vertical Stack Water Source Heat Pump complete AA = Standard Model Placeholder M = Master Revision level S = Slave A = Rev. -
Page 4: Nomenclature
Nomenclature VS series, cabinetry 1, 2, 3 5, 6 12, 13 – Unit type Special option codes VHC = Vertical Stack Water Source Heat Pump cabinetry AA = Standard Model Placeholder M = Master Revision level S = Slave A = Rev. 1... - Page 5 Nomenclature VS series, chassis 1, 2, 3, 4 5, 6 16, 17 VHCH – Unit type Special option codes VHN = Vertical Stack Water Source Heat Pump complete AA = Standard Nominal capacity Placeholder 09 = 9,000 BTU/Hr Revision level 12 = 12,000 BTU/Hr A = Rev.
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Page 6: General Information
This installation and start- up the installation shall be in up instructions literature is accordance with the regulations information for VS Series Water Source of all authorities having Heat Pumps. Water Source jurisdiction and must conform Heat Pumps are single to all applicable codes. - Page 7 General information Unit protection: Cover units Prepare units for installation on the job site with either as follows: Do not store or install units in the original packaging or an Compare the data on the unit ■ ■ corrosive environments or in equivalent protective covering.
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Page 8: Unit Physical Data
Unit physical data Size Cooling capacity (BTU/hr) 9200 12000 16500 18500 22500 30000 34000 Heating capacity (BTU/hr) 12500 16000 21500 23500 29500 37000 41000 Compressor (1 each) Rotary Rotary Rotary Rotary Rotary Rotary Scroll Factory refrigerant charge R-410A (oz) 27.5 31.7 45.8 47.0... -
Page 9: Dimensions And Data
Dimensions and data: Stand Alone Unit (VHNA) Unit dimensions: 88" height 2-1/2" Dimension Models 09-18 Models 24-36 18" 24-1/4" 8" 10" 12" 14" Optional duct connection 10" 12" 14" 16" Top view 54-11/16" 55-1/2" 5-9/16" 5-5/8" 1-5/8" 2-1/8" 2-1/16" 4-1/8" 4-1/16"... - Page 10 Dimensions and data: Master (VHNM) Unit dimensions: 88" height 3" 2-1/2" Dimension Models 09-18 Models 24-36 18" 24-1/4" 8" 10" 12" 14" Optional duct connection 10" 12" 14" 16" Top view 54-11/16" 55-1/2" 5-9/16" 5-5/8" 1-5/8" 2-1/8" 2-1/16" 4-1/8" 4-1/16" 6-1/8"...
- Page 11 Dimensions and data: Slave (VHNS) Unit dimensions: 88" height Dimension Models 09-18 Models 24-36 18" 24-1/4" 8" 10" Optional duct 12" 14" connection 10" 12" 14" 16" Reference only: 54-11/16" 55-1/2" Field piping to master by others. 1-5/8" 5-9/16" 5-5/8" 2-1/8"...
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Page 12: Safety Considerations
Safety The installation and servicing Follow all safety codes. Wear of air conditioning equipment safety glasses and work considerations can be hazardous due to gloves. Use quenching cloth for system pressure and electrical brazing operations. Have fire components. Only trained and extinguisher available. -
Page 13: Installation
Installation: Installation: Check equipment Check job site Upon receipt of shipment at Storage the job site, carefully check If the equipment is not needed Installation, operation and the shipment against the bill immediately at the job site, it maintenance instructions are of lading. - Page 14 Drywall installation Framing rough-in detail All rough-in instructions and To above floor drawings are designed for a single layer of 5/8" thick drywall. Refer to the Framing Rough-in Detail drawing to the right. Rough-in dimensions will be affected if drywall thickness is different than 5/8", the return Supply opening panel will not fit snugly to the wall...
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Page 15: Installation
75 °F indicates 150 feet of riser will expand excessive expansion and between-the-floor or contract 1". To eliminate stress, a riser system must fireproofing have not been addressed in the Zehnder be anchored to the building structure at least once. Rittling design and any additional materials to... - Page 16 Cabinet and Riser connections Do not attach drywall studs to ■ ■ Install cabinet with risers as the equipment cabinet. riser installation follows: When all units on a riser are ■ ■ Move cabinet into position. ■ ■ anchored into place, complete Caution: Keep risers off the Riser expansion riser joints as follows:...
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Page 17: Applications
“J” type swivel Low water temperature connection. Balancing valves and cutout setting an external low pressure drop Zehnder Rittling’s heat pump solenoid valve for use in variable controller includes a user speed pumping systems may configurable switch (DIP switch 2 also be included in the hose kit. - Page 18 Low water temperature codes and regulations. antifreeze is required. Alcohols cutout setting and glycols are commonly used as Zehnder Rittling’s heat pump antifreeze; however your local sales controller includes a user representative should be consulted configurable switch (DIP switch 2...
- Page 19 Ground water Open loop ground Water quality standards Table 5 should be consulted applications for water quality requirements. Shut off valves should be included Scaling potential should be for ease of servicing. Boiler drains assessed using the pH/calcium or other valves should be “tee’d” hardness method.
- Page 20 Water coil low temperature limit The preferred method of control setting applications requires a flow control device Zehnder Rittling’s heat pump mounted on the outlet of the controller includes a user water control valve. The device configurable switch (DIP switch 2...
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Page 21: Water Quality Standards
<4 GPM per ton to minimize transfer, increased pressure drop, potential erosion Three categories of issues can reduced flow and corrosion. The Zehnder Rittling Water arise from use of water including: Quality Table provides water Scale formation: resulting ■ ■... -
Page 22: Electrical Data
Electrical data Standard PSC motors Compressor Voltage Rated voltage Voltage Power Total unit Min. circuit Max. fuse/ Size code (V/Hz/Ph) min./max. Amps HACR size 208-230/60/1 197/254 20.0 0.44 277/60/1 250/293 18.8 0.40 208-230/60/1 197/254 27.0 0.44 277/60/1 250/293 20.0 0.40 208-230/60/1 197/254 42.0... -
Page 23: Electrical Data
Electrical data High static PSC motors Compressor Voltage Rated voltage Voltage Total unit Min. circuit Max. fuse/ Size Power (W) code (V/Hz/Ph) min./max. Amps HACR size 208-230/60/1 197/254 20.0 277/60/1 250/293 18.8 208-230/60/1 197/254 27.0 277/60/1 250/293 20.0 208-230/60/1 197/254 42.0 13.1 15.6... -
Page 24: Installation
Electrical: Low Electrical: Power wiring voltage wiring Three phase wiring is similar except that all four power wires Table 7: Transformer loading To avoid possible injury or death are directly connected to the due to electrical shock, open the Component contactor. - Page 25 Table 8: Blower performance data, standard motors Airflow (CFM) at external static pressure (in. wg) Rated Min. Unit Speed airflow 0.01 0.05 0.15 0.25 0.35 0.45 High VHN09 High VHN12 High VHN15 High VHN18 High VHN24 High 1081 1075 1070 1049 1024 VHN30...
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Page 26: System Cleaning And Flushing
System cleaning and flushing Flush risers as follows: Verify that electrical power to ■ ■ the unit is off. Close shut-off valves at each ■ ■ unit on the riser except the Verify that supply and return ■ ■ Cleaning and flushing the unit shut-off valve on the top floor. - Page 27 Hose kit installation Refer to the hose kit installation detail on page 26 for an illustration of ■ ■ a typical supply/return hose kit assembly. Pipe joint compound or Teflon tape is not necessary when using ■ ■ factory supplied hose kits. Note: When antifreeze is used, ensure that it is compatible with Teflon tape and pipe joint compound that may have been applied to other pipe fittings in the system.
- Page 28 Hose kit Specifications: Designed for VS series ■ ■ applications. Temperature range of 35 °F (2 °C) to ■ ■ 180 °F (82 °C). Maximum working pressure of ■ ■ 400 psig (2756 kPa). Fire rated materials per ASTM E ■...
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Page 29: Chassis Installation
After the system has been filled ■ ■ and system pump is started, all connections should be re- checked for water leaks. Zehnder Rittling will not be responsible or liable for damage caused by any water leaks from a field installed water connection(s). - Page 30 Return panel installation Supply grille installation Install supply grilles over the Install the provided adhesive- Insert the grille into the cabinet ■ ■ ■ ■ cabinet discharge openings as backed gasket material on the supply duct extension(s). follows: outer perimeter of the cabinet to Assure that the grille flange seal the return panel to the cabinet.
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Page 31: Dimensional Data
Aluminum discharge grille Single deflection Individually adjustable blades 1-1/4" 5/8" 1-7/8" 1-1/8" Dimensional data Grille size 16" x 14" 17-11/16" 15-11/16" 15-11/16" 13-11/16" 14" x 12" 15-11/16" 13-11/16" 13-11/16" 11-11/16" 12" x 10" 13-11/16" 11-11/16" 11-11/16" 9-11/16" 10" x 8" 11-11/16"... - Page 32 Aluminum discharge grille Double deflection Mounting holes 3/16" (countersunk) 1-7/8" 2/3" 1-1/4" 5/32" 9/16" Horizontal and vertical deflection blades 1-7/8" 2/3" 5/32" 1-1/4" Dimensional data Grille size 16" x 14" 17-11/16" 15-11/16" 15-11/16" 13-11/16" 14" x 12" 15-11/16" 13-11/16" 13-11/16" 11-11/16"...
- Page 33 Aluminum discharge grille Double deflection with opposed blade damper 5/32" Individually adjustable blades on 2/3" spacing 1-1/4" Slide operator 5/8" 2-13/16" 2/3" One piece extruded frame Dimensional data Grille size 16" x 14" 17-11/16" 15-11/16" 15-11/16" 13-11/16" 14" x 12" 15-11/16"...
- Page 34 Standard removable perimeter return air panel 32-9/32" 26-9/32" 2-15/16" 2-15/16" 27-1/8" 21-1/8" 56" 63-29/32" 58-3/4" 58" 55-1/4" 63-5/32" Available for sizes 09-18 Available for sizes 24-36 Holes to secure frame to studs (typical) 32-9/32" 2-15/16" 27-1/8" 56" 63-29/32" 58-3/4" Holes to secure frame to studs (typical) Allen lock, removable...
- Page 35 Optional hinged perimeter return air panel 26-9/32" 32 9/32" 2-15/16" 2-15/16" 21-1/8" 27-1/8" 55-1/4" 56" 63-5/32" 58" 63-29/32" 58-3/4" Available for sizes 09-18 Available for sizes 24-36 Holes to secure frame to studs (typical) 32 9/32" 2-15/16" 27-1/8" 56" 63-29/32" 58-3/4"...
- Page 36 Optional removable louvered return air panel 2-15/16" 2-15/16" 30 3/16" 24-3/16" 61-7/8" 61-1/8" 24-29/32" 24-29/32" 19-11/16" 17-11/16" Available for sizes 09-18 Available for sizes 24-36 Holes to secure frame to studs (typical) 2-15/16" 30 3/16" 61-7/8" 24-29/32" 19-11/16" Holes to secure frame to studs (typical) Allen lock, removable Notes:...
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Page 37: Wiring Diagram
Wiring diagram Blower speed wiring Unit 208-230V, standard and high static Orange Brown Blue size High High High High High High Black Unit High Power Supply Blue Capacitor Blue Yellow 208-230V/60HZ/1PH Compressor Note 4 Optional Blower Disconnect Motor Switch White Orange See Note 6 Transformer... -
Page 38: Wiring Diagrams
Wiring diagram 208-230V, EC motor Wire colors Discrete speeds Power leads 1st spd 2nd spd Comm 3/4 HP Blue Brown Black White 1/4 HP Purple White Blue Black Black Unit Blue Capacitor Blue Power Supply Yellow 208-230V /60HZ/1PH Compressor Note 4 Optional Disconnect Blower... - Page 39 Wiring diagram Blower speed wiring Unit 277V, standard and high static Orange Brown Black Blue size High High High High High High High Black Unit Blue Capacitor Power Supply Blue Yellow 277V/60HZ/1PH Compressor Note 4 Optional Blower Disconnect Motor Switch White Orange See Note 6...
- Page 40 Wiring diagram 277V, EC motor Wire colors Discrete speeds Power leads 1st spd 2nd spd Comm 3/4 HP Blue Brown Black White 1/4 HP Purple White Blue Black Black Unit Blue Capacitor Power Supply Blue Yellow 277V /60HZ/1PH Compressor Note 4 Optional Blower Disconnect...
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Page 41: Start-Up
Microprocessor control system Zehnder Rittling Horizontal Heat Pumps feature a Emergency shutdown contacts ■ ■ microprocessor-based control system. The control Relay to operate an external damper ■ ■ system is specifically designed to protect the unit Ability to automatically change fan speed from ■... -
Page 42: Dip Switch Settings And Operation
Dip switch 3 Dip switch settings Dip switch 1 Tstat-Comm=Off Test Mode=Off and operation Tstat-24VAC=On Normal Mode=On Thermostat selection: Dip Test mode: Test mode is used switch 3 is used to select to speed-up the operation the type of thermostat that sequence of the unit, therefore will be used to control the creating a more timely... -
Page 43: Standard 24Vac Sequence Of Operation
Standard 24VAC sequence of operation Random start delay be valid the reversing valve will energize/de-energize after 5 seconds. The microprocessor will then verify When the unit is first powered “on” the control that the anti-short cycling delay has been satisfied. microprocessor will generate a random number Once the anti-short cycling delay has been satisfied to determine the start delay of the compressor... - Page 44 Communicating thermostat Failure code display area Temperature Wiring harness adjustment provided with communicating thermostat On/off power button PCB inside electrical box of cabinet Dip switch positions for proper communicating thermostat operation Switch Description On/off power Fan: Position button high/low Varies, depends on system Temperature temperatures adjustment...
- Page 45 Communicating thermostat operating instructions Power on/off “time +” or “time -” button and hold for 6 seconds and the timing will change to the hour. To select the day of This button will switch the unit on and off. In power off the week, push the “day”...
- Page 46 Communicating thermostat operating instructions Set system parameters Push the “cancel” and “sleep” buttons simultaneously Temp. Time Area Area and hold for three seconds to set the system parameters. A chime will sound and “0- --” will be Low voltage lockout lower limit (16-30V); 16V as default. Use temperature “-”...
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Page 47: Operating Limits
Unit starting and Operating limits When any one of these factors is at minimum or operating conditions maximum levels, the other two Environment: Units are factors should be at normal designed for indoor installation levels to ensure proper unit only. Never install units in areas operation. -
Page 48: Piping System Cleaning And Flushing
■ Verify that all strainers are ■ ■ paper. The system water in place (Zehnder Rittling pH should be in the range recommends a strainer with indicated in Table 5 . Add a #20 stainless steel wire chemicals, as appropriate to mesh). -
Page 49: Unit Checkout
Unit and system checkout: Before powering Unit checkout Condensate line Low water temperature cut-out ■ ■ ■ ■ Verify that condensate line is open Verify that low water Filter ■ ■ and properly pitched toward drain. temperature cut-out controls Clean or replace filter, if are provided for the outdoor required. - Page 50 (see Two factors determine the Table 15). If temperature is outside of operating range, operating limits of Zehnder Rittling heat pumps, (a) return air check refrigerant pressures. temperature, and (b) supply water temperature. When any one of...
- Page 51 When testing is complete, set system to maintain desired comfort level. Be certain to fill out and forward all warranty registration papers to Zehnder Rittling. Start-up...
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Page 52: Preventive Maintenance
Preventive Water coil maintenance content, it is best to establish a periodic maintenance schedule maintenance with the owner so the water coil can be checked regularly. Electrical shock can cause Dirty installations are typically personal injury or death. When the result of deterioration of installing or servicing system, iron or galvanized piping or always turn off main power to... -
Page 53: Maintenance
Preventive Condensate drain Air coil In areas where airborne bacteria The air coil must be cleaned to maintenance may produce a “slimy” substance obtain maximum performance. in the drain pan, it may be Check once a year under normal necessary to treat the drain pan operating conditions and, if dirty, chemically with an algaecide brush or vacuum clean. - Page 54 Exploded view repair parts diagram: Cabinet...
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Page 55: Replacement Parts
Qty. Description Standard perimeter bypass Allen lock, removable Optional perimeter bypass Contact your Zehnder Rittling Sales Support Representative Allen lock or key lock, hinged Optional louvered Allen lock, removable Cabinet repair parts list: Supply air grilles Part number by unit model number Item Qty. - Page 56 Cabinet repair parts list: Electrical Part number by unit model number Item Qty. Description Compressor contactor 11100001873A HLC-2XQ04GGFLA:40A Capacitor 30uf 11100001863A 50/60HZ 450VAC Capacitor 35uf 11100001864A 50/60HZ 450VAC Capacitor 40uf 11100001865A 50/60HZ 450VAC Capacitor 45uf 11100001867A 50/60HZ 450VAC Capacitor 50uf 11100001866A 50/60HZ 450VAC Fan motor capacitor 2.5uf...
- Page 57 Exploded view repair parts diagram: Chassis Replacement parts...
- Page 58 Chassis repair parts list: Electrical Part number by unit model number Item Qty. Description Compressor 11100001856A 11100001857A 11100001858A 11100001859A 11100001860A 11100001861A 11100002747A High pressure switch 11100002759A 600 PSI Low pressure switch 11100002760A 40 PSI Reversing valve 11100002761A 11100002762A 11100002763A Compressor P5 wiring –...
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Page 59: Troubleshooting
Troubleshooting Table G: Technical Diagnosis System Warning (Flash) System Lockout (Steady On) Error Code Fault Description Possible Fault Cause (commtstat) High pressure lockout Low air flow (heating) ER 1 Flash > 600 psig Low water flow (cooling) Low pressure lockout ER 2 Flash Low refrigerant charge... - Page 60 Troubleshooting PCB System Error Codes (Green LEDs) System Warning = FLASHING Error Lock-out = STEADY Code Fault Description Potential Causes (COM T Stat) Low air flow (heating), low water flow (cooling) ■ ■ Blower fan inoperable (heat mode) ■ ■ Dirty air filter (heat mode) ■...
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Page 61: Lockout Modes
Lockout modes Note: If the microprocessor board is flashing a system Over/under voltage protection warning and the unit is locked out and not running If the unit control voltage is 18VAC>voltage>30VAC the lockout can be cleared from the microprocessor the unit will shut down all inputs immediately. Once by a momentary shut down of incoming line voltage the voltage has reached acceptable levels the unit (208VAC, 230VAC or 277 VAC). - Page 62 Table 16: Temperature sensor resistance values (LWT, DAT, FP1, FP2) Minimum Standard Maximum Minimum Standard Maximum °C °F °C °F -40.0 -40.0 200.80 230.40 240.30 20.0 68.0 12.01 12.16 12.31 -39.0 -38.2 208.00 216.90 226.10 21.0 69.8 11.55 11.69 11.82 -38.0 -36.4 196.00...
- Page 63 Note: All Zehnder Rittling Water Source Heat Pumps are pre-charged and factory run tested. The R410A refrigerant charge used on all unit chassis models is weighed into exact amounts, refrigeration gauges should only be attached as a last resort. Failure to replace lost charge may result in loss of capacity/ efficiency and equipment life.
- Page 64 Zehnder Rittling, the purchaser shall return the defective good(s) to the factory for inspection with freight prepaid. If inspection shows the goods to be defective, Zehnder Rittling will at its discretion repair or replace the said item(s). Defects arising from damage due to shipment, improper installation, negligence or misuse by others are not covered by this warranty.