AAON ProFit WV Series Installation Operation & Maintenance Download Page 19

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3. Water loop systems that have been

disinfected.

Chlorides will result in a premature failure of

the refrigerant-to-water heat exchanger.

Failure of the refrigerant-to-water heat

exchanger as a result of chemical corrosion is

excluded from coverage under AAON

warranties and the heat exchanger

manufacturer warranties.

Failure of the refrigerant-to-water heat

exchanger may allow water to enter the

refrigerant circuit and may cause extensive

damage to the refrigerant circuit components.

Any damage to the equipment as a result of

refrigerant-to-water heat exchanger failure

from chemical corrosion due to the fluid in

the refrigerant-to-water heat exchanger is

excluded from coverage under AAON

warranties and the heat exchanger

manufacturer warranties.

Freezing Water in the Heat Exchanger

This product contains one refrigerant-to-

water heat exchanger. A refrigerant-to-water

heat exchanger contains refrigerant in one

passage and water in another passage. Water

is subject to freezing at 32°F. When water

freezes in a heat exchanger significant forces

are exerted on the components of the heat

exchanger where the water is confined.

Failure of the refrigerant-to-water heat

exchanger due to freezing will allow water to

enter the refrigerant circuit and will cause

extensive damage to the refrigerant circuit

components. Any damage to the equipment

as a result of water freezing in the refrigerant-

to-water heat exchanger is excluded from

coverage under AAON warranties and the

heat exchanger manufacturer warranties.

Unit is capable of operating with Entering

Water Temperatures (EWT) as low as 57°F

during cooling mode without the need for an

automatic flow regulating water valve. If the

EWT is expected to be lower than 57°F or

more stable operation is desired, an automatic

flow regulating water valve must be installed.

OPEN LOOP APPLICATIONS

Cupronickel refrigerant-to-water heat

exchangers are recommended with all

open loop applications. Failure to use

a Cupronickel heat exchanger may

result in premature failure of your

system and possible voiding of the

warranty.

Cleaning the cooling tower or water

loop with harsh chemicals such as

hydrochloric acid (muriatic acid),

chlorine or other chlorides, can

damage the refrigerant-to-water heat

exchanger. Care must be taken to

avoid allowing chemicals to enter the

refrigerant-to-water heat exchanger.

See Appendix A - Heat Exchanger

Corrosion Resistance for more

information.

WARNING

CAUTION

Summary of Contents for ProFit WV Series

Page 1: ...re may result causing property damage personal injury or loss of life QUALIFIED INSTALLER Improper installation adjustment alteration service or maintenance can cause property damage personal injury or loss of life Startup and service must be performed by a Factory Trained Service Technician A copy of this IOM must be kept with the unit WARNING WARNING ...

Page 2: ......

Page 3: ...d Blower Removal 16 Lifting and Handling the Unit 17 Service Access 17 Blower Motor and Fan Access 18 Refrigerant to Water Heat Exchanger Water Piping 18 Electrical 22 Duct Connection 25 Startup 25 Supply Fans 26 Fan Air Flow Adjustment 26 Filters 26 Adjusting Refrigerant Charge 27 Operation 30 AAON WSHP Pioneer Silver Controller 30 Maintenance 37 DX Cooling 37 Condensate Drain Pans 37 Supply Fans...

Page 4: ... 012 WV Unit Series Filters A Cabinet 38 Table 11 015 030 WV Series Unit Filters B C Cabinet 39 Table 12 036 042 WV Series Unit Filters D Cabinet 39 Table 13 048 060 WV Series Unit Filters E Cabinet 40 Figures Figure 1 Access Panels 13 Figure 2 Internal Condensate P trap 14 Figure 3 Vertical Configuration Orientations 15 Figure 4 Blower Assembly 16 Figure 5 Blower Assembly with Captive Panel 17 Fi...

Page 5: ... Pan Controls 5 Wire Thermostat Control Installation and Maintenance Internal P trap Color Coded Wiring and Wiring Diagram Environmentally Friendly R 410A Refrigerant Extended Life Sturdy Galvanized Steel Construction Induction Brazing Stainless Steel Drain Pan 5 Year Parts Warranty Reduced Sound Compressors mounted with rubber in shear isolators on an isolation plate with rubber in shear isolatio...

Page 6: ...e alkaline chemical coil cleaners with a pH value greater than 8 5 after mixing without first using an aluminum corrosion inhibitor in the cleaning solution Cleaning the cooling tower or the water loop with harsh chemicals such as hydrochloric acid muriatic acid or chlorine can damage the refrigerant to water heat exchanger Care must be taken to avoid allowing chemicals to enter the refrigerant to...

Page 7: ...here refrigerant or nitrogen gases may be leaking A sufficient quantity of vapors may be present and cause injury or death UNIT HANDLING To prevent injury or death lifting equipment capacity shall exceed unit weight by an adequate safety factor Always test lift unit not more than 24 inches high to verify proper center of gravity lift point to avoid unit damage injury or death ELECTRIC SHOCK AND FI...

Page 8: ...iate Personal Protective Equipment PPE be worn must be followed ROTATING COMPONENTS Unit contains fans with moving parts that can cause serious injury Do not remove panel containing fans until the power to the unit has been disconnected and fan has stopped rotating WATER FREEZING Failure of the refrigerant to water heat exchanger due to freezing will allow water to enter the refrigerant circuit an...

Page 9: ...ice must be performed by a Factory Trained Service Technician 3 The unit is for indoor use only See General Information section for more unit information 4 Every unit has a unique equipment nameplate with electrical operational and unit clearance specifications Always refer to the unit nameplate for specific ratings unique to the model you have purchased ...

Page 10: ...ion 0 Minor Revision 0 Voltage 3 460V 3Φ 60Hz 4 575V 3Φ 60Hz A 265V 1Φ 60Hz B 115V 1Φ 60Hz C 208 230V 1Φ 60Hz D 208 230V 3Φ 60Hz Efficiency Level 0 Std Efficiency Compact Box Compressor Style 0 R 410A On Off Compressor Heat Pump Loop Type 0 Water Loop Cooling Tower Only EWT 60 F A Ground Loop Application B Ground Water Application Coil Type 0 Copper Coaxial Refrigerant to Water Heat Exchanger Fin ...

Page 11: ... Fused Disconnect 60 Amp 6A Control Sequence 0 Terminal Block for Thermostat Pioneer Silver Controller A Terminal Block for Thermostat Pioneer Silver Controller Expansion Board 6B Control Options 0 Standard No Communication 7 Cabinet Options G 1 2 Fiberglass Cabinet Insulation Stainless Steel Drain Pan H 1 2 Fiberglass Cabinet Insulation Stainless Steel Drain Pan Low Sound Package MLV 8 WSE 0 Stan...

Page 12: ...tandard NFPA 90A and local building plumbing and waste water codes All appliances must be electrically grounded in accordance with local codes or in the absence of local codes the current National Electric Code ANSI NFPA 70 or the current Canadian Electrical Code CSA C22 1 Improper installation adjustment alteration service or maintenance can cause property damage personal injury or loss of life S...

Page 13: ...tems Figure 1 Access Panels Storage If installation will not occur immediately following delivery store equipment in a dry protected area away from construction traffic and in the proper orientation as marked on the packaging with all internal packaging in place Secure all loose shipped items Direct Expansion DX Systems All systems are factory assembled leak tested charged with R 410A refrigerant ...

Page 14: ...your local building codes for additional service clearance requirements Allow adequate space for piping access and panel removal Water piping and condensate drain connections are located on the front of the unit Floor Mounted Units Make sure the unit is level Other installation provisions may be necessary according to job specifications It is recommended that a vibration isolation pad be used when...

Page 15: ...t Control Panel Air Intake Return Back Compressor Access 24 12 0 Compressor replacement access is through the service access panel on the rear of the unit Compressor wiring terminals can be accessed from the front of the unit Figure 3 Vertical Configuration Orientations ...

Page 16: ...3 The hinged control compartment can now be opened to access the blower 4 Grip the blower assembly and pull it until it clears the compartment Figure 4 Blower Assembly Forward Curved Blower Removal 1 Using a 5 16 socket remove the screw from the controls access panel Access panel can now be removed 2 Grip the blower assembly with both hands and pull it about or until it clears the captive panel at...

Page 17: ...gure 7 Vertical Unit Service Access Service access is provided through access panels to the controls and compressor compartment an additional removable panel to the compressor compartment and a hinged door to the blower section accessible through the controls compartment While leaving the access panel opened is acceptable for most service maintenance conditions occasionally it will be necessary fo...

Page 18: ...n now be separated from the motor Refrigerant to Water Heat Exchanger Water Piping Open Loop Applications This product contains refrigerant to water heat exchanger made of cupronickel or copper and is subject to severe corrosion and failure when exposed to chlorides Do not allow water containing any form of chlorides to enter this heat exchanger Common forms of chlorides include 1 Sea water mist e...

Page 19: ...ater is confined Failure of the refrigerant to water heat exchanger due to freezing will allow water to enter the refrigerant circuit and will cause extensive damage to the refrigerant circuit components Any damage to the equipment as a result of water freezing in the refrigerant to water heat exchanger is excluded from coverage under AAON warranties and the heat exchanger manufacturer warranties ...

Page 20: ...or below the freezing point 3 F of the aqueous solution of water and glycol Water Piping Only use approved water pipe material Avoid using galvanized material for water lines fittings WATER FREEZING Failure of the refrigerant to water heat exchanger due to freezing will allow water to enter the refrigerant circuit and will cause extensive damage to the refrigerant circuit components Any damage to ...

Page 21: ...water increases A bleed off drain valve must be provided for the water loop Field provided and installed water treatment program must be compatible with stainless steel copper aluminum ABS plastic and PVC Batch feed processes must never be used as concentrated chemicals can cause corrosion Never use hydrochloric acid muriatic acid or chlorine as it will corrode stainless steel Water loop piping ru...

Page 22: ...table Performance Range2 Min Max Min Max 60 115 120 104 127 108 126 208 230 208 240 187 254 187 252 208 208 187 228 187 228 230 240 208 254 216 252 265 277 240 293 249 291 460 480 416 508 432 504 575 600 520 635 540 630 Notes 1 Operating voltage is the min and max voltage for which the unit can function Never operate outside of this min and max voltage 2 The Acceptable Performance Range is the min...

Page 23: ... MCA rating Supply conductors must be rated a minimum of 75 C Protect the branch circuit in accordance with code requirements The unit must be electrically grounded in accordance with local codes or in the absence of local codes the current National Electric Code ANSI NFPA 70 or the current Canadian Electrical Code CSA C22 1 Wire power leads to the unit s contactor or main disconnect All wiring be...

Page 24: ...250 ft Total Wire Distance Allowable Quantity of Control Wires x Control Wire Distance Take the total wire distance allowable and divide by the number of wires to be connected This indicates the distance allowable for that size wire The wiring to the unit must not exceed the total wire distance allowable If the voltage at the connectors is less than 21 VAC isolation relays must be installed If und...

Page 25: ...ht hand return depends on feature selected when ordering the units Ductwork must be sized in accordance with the ASHRAE Handbook Ductwork must be installed in accordance with NFPA Standard 90A When attaching duct to the unit use a flexible compressible material rated for duct connections A three inch flexible connector for both return and supply duct connections is recommended Startup See back of ...

Page 26: ...from the Pioneer Expansion board or the Pioneer Gold board Low fan speed is achieved by connecting the compressor Y call from the thermostat to Y1 on the control board The higher fan speed is achieved by connecting Y from the thermostat to Y2 on the control board Motor Tap RPMs Fan Speed RPM PSC Tap High 1200 Black Med 950 Blue Low 800 Red Note RPMs are approximate and will vary slightly depending...

Page 27: ...of the liquid line as it leaves the refrigerant to water heat exchanger Read the gauge pressure at the liquid line close to the point where the temperature was taken Convert the pressure obtained to a saturated temperature using the appropriate refrigerant temperature pressure chart Subtract the measured liquid line temperature from the saturated temperature to determine the liquid sub cooling Com...

Page 28: ...e high superheat results in increased sub cooling Correct an overcharged system by reducing the amount of refrigerant in the system to lower the sub cooling The system is undercharged if the superheat is too high and the sub cooling is too low Correct an undercharged system by adding refrigerant to the system to reduce superheat and raise sub cooling If the sub cooling is correct and the superheat...

Page 29: ... 96 8 57 161 0 84 249 8 111 369 1 138 526 6 31 98 8 58 163 8 85 253 7 112 374 2 139 533 3 32 100 9 59 166 7 86 257 5 113 379 4 140 540 1 33 102 9 60 169 6 87 261 4 114 384 6 141 547 0 34 105 0 61 172 5 88 265 4 115 389 9 142 553 9 35 107 1 62 175 4 89 269 4 116 395 2 143 560 9 36 109 2 63 178 4 90 273 5 117 400 5 144 567 9 37 111 4 64 181 5 91 277 6 118 405 9 145 575 1 38 113 6 65 184 5 92 281 7 1...

Page 30: ...Supply Power 5VA Outputs Relay Outputs 1A maximum per output 2A maximum for all outputs combined Input Requirements Resistive Inputs require 10K Type 3 Thermistor 24VAC Inputs Inputs provide 4 7kΩ Load Environmental Operating Temperature 4 to 158 F 20 to 70 C Storage Temperature 22 to 176 F 30 to 80 C Humidity Storage and Operating 0 to 95 RH non condensing Mounting Dimensions Mounting Board must ...

Page 31: ...terminal Dry contact with TEST enables the delay override function Wiring Harness H3 PURPLE Evaporator coil temperature sensor To be used with 10k Type III thermistors WHITE Evaporator coil temperature sensor To be used with 10k Type III thermistors TAN Water output temperature sensor To be used with 10k Type III thermistors GRAY Water output temperature sensor To be used with 10k Type III thermis...

Page 32: ...wn 2 Condensate Overflow 3 Low Voltage 4 High Voltage Compressor Operation The compressor will enable upon receiving a 24VAC input on the Y terminal or a 24VAC input on the TH_NS terminal if in night setback mode unless an alarm is active If the supply fan was not enabled prior to the compressor call then the supply fan will enable for 5 seconds before the compressor is started The compressor has ...

Page 33: ...y When the unit is taken out of night setback mode the controller will execute a random start delay The night setback mode can be overridden with a 24VAC input to the night setback override terminal NS_OV Once the override signal is received night setback will be overridden for 2 hours even if the signal is removed While night setback is overridden the controller will respond to the normal thermos...

Page 34: ...ressor the supply fan and the reversing valve Leaving Water Temperature Alarm To prevent freezing of the liquid heat exchanger the leaving water temperature alarm will activate and turn the compressor off if the refrigerant saturated suction temperature during heating drops below the freeze protection temperature setpoints in Table 9 Glycol Percentage Setpoints based on the glycol percentage that ...

Page 35: ...ater temperature rises above 40 F The supply fan and the compressor are allowed to operate when this alarm is activated Emergency Shutdown Alarm The emergency shutdown input requires a constant connection to either 24VAC or 24VAC common for normal operation If the 24VAC or 24VAC common signal is removed then the controller will enter emergency shutdown mode This alarm will disable the compressor a...

Page 36: ...on Pressure Alarm The low suction pressure alarm will enable if the low pressure switch opens for more than 10 seconds This alarm will disable the compressor but allow the supply fan to operate If this alarm occurs more than twice in 2 hours the controller will go into a hard lock out and require a power cycle to reset Removal of the compressor call will not reset the alarm while in hard lock out ...

Page 37: ... motors are permanently lubricated and require no oiling Filter Replacement Monthly filter inspection is required to maintain optimum unit efficiency It is strongly recommended that filter media be replaced monthly See Optional 4 Sided Air Filter Rack Set up prior to maintenance of the filter rack See Filter Information section for reference to the correct size and quantity of filters Improper ins...

Page 38: ...d Parts Department 2425 S Yukon Ave Tulsa OK 74107 Ph 918 382 6450 techsupport aaon com www AAON com Note Before calling technician must have model and serial number of the unit available to help answer questions regarding the unit Filter Information Table 10 006 012 WV Unit Series Filters A Cabinet Feature 3B Quantity Size W x H x D Type A 1 18 x 10 x 2 Pleated MERV 8 K Pleated MERV 11 L Pleated ...

Page 39: ... x 20 x 1 Pleated MERV 8 F Pleated MERV 11 G Pleated MERV 13 I 1 20 x 20 x 1 Fiberglass J 1 20 x 20 x 2 Table 12 036 042 WV Series Unit Filters D Cabinet Feature 3B Quantity Size W x H x D Type A 1 24 x 24 x 2 Pleated MERV 8 K Pleated MERV 11 L Pleated MERV 13 E 1 24 x 24 x 1 Pleated MERV 8 F Pleated MERV 11 G Pleated MERV 13 I 1 24 x 24 x 1 Fiberglass J 1 24 x 24 x 2 ...

Page 40: ...B Quantity Size W x H x D Type A 1 24 x 20 x 2 1 14 x 20 x 2 Pleated MERV 8 K Pleated MERV 11 L Pleated MERV 13 E 1 24 x 20 x 1 1 14 x 20 x 1 Pleated MERV 8 F Pleated MERV 11 G Pleated MERV 13 I 1 24 x 20 x 1 1 14 x 20 x 1 Fiberglass J 1 24 x 20 x 2 1 14 x 20 x 2 ...

Page 41: ...than 125 ppm Less than 125 ppm Note 4 Chlorine Less than 0 5 ppm Less than 0 5 ppm Hydrogen Sulfide None Allowed None Allowed Biological Growth Iron Bacteria None Allowed None Allowed Iron Oxide Less than 1 ppm Less than 1 ppm Erosion Suspended Solids Less than 10 ppm Less than 10 ppm Water Velocity Less than 8ft s Less than 12 ft s Notes 1 Harness in ppm is equivalent to harness in mg l 2 Grains ...

Page 42: ...wing items 1 Is there any visible shipping damage Yes No 2 Is the unit level Yes No 3 Are the unit clearances adequate for service and operation Yes No 4 Have all electrical connections been tested for tightness Yes No 5 Does the electrical service correspond to the unit nameplate Yes No 6 On 208 230V units has transformer tap been checked Yes No 7 Has overcurrent protection been installed to matc...

Page 43: ...ressure Saturated Temperature Line Temperature Sub cooling Superheat Discharge N A N A Suction N A Liquid N A Refrigeration System 1 Heating Mode Heat Pump Only Pressure Saturated Temperature Line Temperature Sub cooling Superheat Discharge N A N A Suction N A Liquid N A Unit Configuration Cooling Mode No Water Leaks Water Flow ________ gpm Water Inlet Temperature ________ F Water Outlet Temperatu...

Page 44: ...de insulation Yes No 7 What is the freeze point of the glycol N A if water ______________________________ Maintenance Log This log must be kept with the unit It is the responsibility of the owner and or maintenance service contractor to document any service repair or adjustments AAON Service and Warranty Departments are available to advise and provide phone help for proper operation and replacemen...

Page 45: ...Literature Change History July 2022 First Version ...

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Page 48: ...ory Technical Support 918 382 6450 Note Before calling Technical Support please have the model and serial number of the unit available Parts For replacement parts please contact your local AAON Representative It is the intent of AAON to provide accurate and current product information However in the interest of product improvement AAON reserves the right to change pricing specifications and or des...

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