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Carrier 50VS Heat Pump User Manual

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1. DIMENSIONAL DATA 16 14 8 14 12 7 12 10 6 10x8 5 NOTES N Single deflection grilles include adjustable vertical blades for controlling horizontal path of discharge Double deflection grilles include adjustable vertical and horizontal blades for controlling horizontal and vertical path of discharge air recommended Dimensions are in inches All dimensions are 1 4 inch Discharge grilles are shipped loose for field installation Construction is roll formed aluminum frame and blades Standard finish is powder coated and will be the same color as the return grille Installation of grille on adjacent unit sides may require a duct extension to prevent air bypass around discharge grilles Mounting hardware included Fig 2 Single and Double Deflection Aluminum Discharge Grille 3 1 8 DIMENSIONAL DATA 16 14 47 5 14 12 12 10 10 8 NOTES The opposed blade damper allows control of air volume cfm and path of discharge air Recommended for applica tions requiring unequal airflow or side discharge grille s with additional top discharge air opening Dimensions are in inches All dimensions are 1 4 inch Discharge grilles are shipped loose for field installation Construction is roll formed aluminum frame and blades Standard finish is powder coa
2. off Table 10 Heat Pump Control Board PCB PROTOCOL Modbus 1 Test Normal_ ON ON ON 2 FP1 15 F 32 F 3 Tstat Comm DIP SWITCH NUMBER 24 vac Gre 4 RV Cooling 0 5 2 1 OFF 6 Com2 Modbus Address 2 Modbus Address Cre 8 Com2 Modbus Address OFF LEGEND DIP Dual In Line Package PC Personal Computer PCB Printed Circuit Board Table 11 BacNet Control Board PCB DIP SWITCH NUMBER POSITION OFF ON 1 ON 2 OFF 3 OFF 4 OFF 5 OFF 6 OFF 7 OFF 8 OFF LEGEND Dual In Line Package PCB Printed Circuit Board DIP Switch Settings and Operation DIP SWITCH 1 Test Mode Off Normal Mode On Test Mode Test mode is used to speed up the operation sequence of the unit therefore creating a more timely trouble shooting technique All time delays are shorted by 10 times with the exception of the high pressure lockout which is instantaneous regardless of which mode the switch is posi tioned DIP switch 1 must be placed into the Normal mode to resume proper operation of the unit DIP SWITCH 2 FP 1 at 15 F Off FP 1 at 32 F On Water Side Freeze Protection Setting DIP switch 2 is used to determine the loop freeze protection setting Depending on the brine concentration of the liquid source the temperature can be set at 15 F or 32 The switch MUST be set to the On
3. 25F Methanol 100 USP Food Grade Ethanol Must not be denatured with any petroleum based product OPEN LOOP GROUND WATER SYSTEMS Shut off valves should be included for ease of servicing Boiler drains or other valves should be tee d into the lines to allow acid flush ing of the heat exchanger P T plugs should be used so that pressure drop and temperature can be measured Piping materi als should be limited to copper or PVC SCH80 NOTE Due to the pressure and temperature extremes PVC SCH40 is not recommended Water quantity should be plentiful and of good quality Con sult Table 3 for water quality guidelines and recommendations Copper is recommended for closed loop systems and open loop ground water systems that are not high in mineral content or corrosiveness In ground water situations where scaling could be heavy or where biological growth such as iron bacteria will be present an open loop system is not recommended Heat ex changer coils may over time lose heat exchange capabilities due to build up of mineral deposits Heat exchangers must only be serviced by a qualified technician as acid cleaning agents and special pumping equipment are required 15 In areas with extremely hard water the owner should be in formed that the heat exchanger may require additional system maintenance and occasional acid flushing Water Supply and Quality Check water supply Water sup ply should be
4. 04 0 45 0 5 ene LOW oe LOW Black HI Bre 50VSE F 540 390 HI 476 50 86 LOW Orange HI 50VSI J 820 HI LOW LOW Blue VSM N 122 HRe 850 NOTE Operation not recommended in shaded area 13 311 Optional Disconnect Switch Unit Power Supply Capacitoy 208 230 60 1 5 1 Black Blue ed Note 4 2 Compressor BLOWER SPEED WIRING 50VSA B 50VSC D 50VSE F 50VSG H 50VSI J 50VSK L 50VSM N 1 See Chart Above SW1 882 1 2 O 1 15 32 3 Tstat Commi24vac 1 4 O RV Cooling OFF ON 5 1 6 2 modbus address 2 modbus address Typical 24 VAC Field Installed Com2 modbus address 2 Stage Tstat Wiri g ii B
5. TIGHT Y N HAVE WATER CONNECTIONS BEEN MADE AND IS FLUID AVAILABLE AT HEAT EXCHANGER Y N ____ HAS PUMP BEEN TURNED ON AND ARE ISOLATION VALVES OPEN HAS CONDENSATE CONNECTION BEEN MADE AND IS A TRAP INSTALLED Y N IS AN AIR FILTER INSTALLED Y N START UP IS FAN OPERATING WHEN COMPRESSOR OPERATES Y N IF 3 PHASE SCROLL COMPRESSOR IS PRESENT VERIFY PROPER ROTATION PER INSTRUCTIONS YN UNIT VOLTAGE COOLING OPERATION PHASE AB VOLTS PHASE BC VOLTS PHASE CA VOLTS if 3 phase if 3 phase PHASE AB AMPS PHASE BC AMPS PHASE CA AMPS if 3 phase if 3 phase CONTROL VOLTAGE IS CONTROL VOLTAGE ABOVE 21 6 VOLTS Y N IF NOT CHECK FOR PROPER TRANSFORMER CONNECTION TEMPERATURES FILL IN THE ANALYSIS CHART ATTACHED COAXIAL HEAT COOLING CYCLE EXCHANGER FLUID IN F FLUID OUT F PSI FLOW HEATING CYCLE FLUID IN F FLUID OUT F PSI FLOW AIR COIL COOLING CYCLE AIR IN AIR OUT F HEATING CYCLE AIR IN AIR OUT F CL 1 HEATING CYCLE ANALYSIS PSI SAT 4 SUCTION F COMPRESSOR EXPANSION VALVE DISCHARGE 4 bA 4 LIQUID LINE oF oF PSI PSI WATER IN WATER OUT COOLING CYCLE ANALYSIS PSI SAT SUCTION F COMPRESSOR EXPANSION VALVE DISCHARGE T W F LIQUID LINE oF oF LF lt L_ PSI PSI WATER IN WATER OUT HEAT OF EXTRACTION ABSORPTION OR HEAT OF REJECTION FLOW RATE GPM x TEMP DIFF DEG F x FL
6. and lower it into the riser from the floor below NOTE The top of each riser is equipped with a 3 in deep swaged connection There is sufficient extension at the bottom to allow insertion of approximately 2 in of the riser into the swaged top of the riser below 3 Center risers in the pipe chase and shim the cabinet level Plumb risers in two planes to assure proper unit operation and condensate drainage 4 Attach the cabinet assembly to the floor and the building structure on at least two sides using sheet metal angles field provided A field provided base vibration dampen ing pad can be used to help eliminate transfer of any vi bration to the structure If vibration dampening pads are Fig 8 Friction Loss of Risers 111111 111 11 111111 1111111111 1 11111 Pt 11 1 11 1 11111 SJT Ne TIT IN TN TEE TT BEA Gk 100 4 4 4 1 1 1 NTR LET 1 1 1 11 used some rough in dimensional changes will need to be 1111111111 considered before installation due to style and thickness Pett tt tT EE TT of the pads Additional anchorage can be provided by in gL ie EL stalling brackets at the top of the cabinet field provided 120 140 Riser Length for 1 in and 1 1 2 in Expansion Ft Water Temperature Difference F Fig 9 Allowable Riser Lengths Between System Expansion Loops 5 DO NOT attach drywall studs to the
7. in the position DIP Switch 5 Com2 Off BacNet or LonWorks Com1 On Communicating Thermostat Com2 modbus address DIP Switch 7 Com2 modbus address DIP Switch 8 Com2 modbus address Standard 24 vac Sequence of Operation RANDOM START DELAY When the unit is first pow ered On the control microprocessor will generate a random number to determine the start delay of the compressor opera tion 3 to 5 minutes This delay is used to prevent multiple units from cycling On at the same time The purpose is to prevent a large power load on the building electrical system af ter a power outage After the number or delay time is generat ed the microprocessor will use this time to determine the mini mum amount of time that must be delayed before the compres sor 15 cycled after a demand is received from the thermostat ANTI SHORT CYCLING DELAY After the random start delay is generated the microprocessor will use this time to determine the minimum amount of time that must be delayed before the compressor is cycled On after a demand is received from the thermostat This allows the refrigerant sys tem to equalize in pressure and prevents short cycling of the compressor MINIMUM COMPRESSOR RUNTIME The minimum compressor runtime of each cycle heating or cooling is 60 seconds Once the compressor is energized it will not de energize even if the thermostat input is removed until t
8. low speed blower when a G input has been received at the 24 vac ther mostat input connection When the input is removed the blow er will deenergize immediately START UP 1 Turn on the line power to all heat pumps 2 Turn the thermostat fan position to ON Blower should start 3 Balance airflow at registers 4 Adjust all valves to their full open positions Room temperature should be within the minimum maximum ranges of Table 9 During start up checks loop water temperature entering the heat pump should be between 60 and 95 5 Two factors determine the operating limits of the 50VS heat pumps supply water temperature and the return air temperature When any one of these factors is at a mini mum or maximum level the other factor must be at a nor mal level to ensure proper unit operation a Adjust the unit thermostat to the warmest setting Place the thermostat mode switch in the COOL position Slowly reduce thermostat setting until the compressor activates b Check for cool air delivery at the unit grille within a few minutes after the unit has begun to operate NOTE Units have a 3 to 5 minute time delay in the control circuit that can be eliminated on the microprocessor control board See test mode described in the DIP Switch Settings and Opera tion section c Check the elevation and cleanliness of the conden sate lines Dripping may be a sign of a blocked line Check that the condensate trap
9. ob tain maximum performance Check once a year under normal operating conditions and if dirty brush or vacuum clean Care must be taken not to damage the aluminum fins while cleaning CAUTION Use caution when cleaning the coil fins as the fin edges are extremely sharp Failure to heed this warning could result in personal injury Cabinet The cabinet can be cleaned using a mild detergent Do not allow water to stay in contact with the cabi net for long periods of time to prevent corrosion of the cabinet sheet metal Refrigerant System To maintain sealed circuit integ rity do not install service gages unless unit operation appears abnormal Verify that air and water flow rates are at proper lev els before servicing the refrigerant circuit TROUBLESHOOTING Lockout Modes If the microprocessor board is flash ing a system warning and the unit is locked out and not run ning the lockout can be cleared from the microprocessor by a momentary shutdown of incoming line voltage 208 vac or 230 vac A lockout that still occurs after line voltage shudown means that the fault still exists and needs to be repaired HIGH PRESSURE LOCKOUT HP The high pressure lockout will occur if the discharge pressure of the compressor exceeds 600 psi The lockout is immediate and has no delay from the time the high pressure switch opens to the lockout Upon lockout the compressor will be deenergized immediately The blower will be
10. of the contactor 208 230 VAC OPERATION All commercial 208 230 v units are factory wired for 208 v single phase operation For 230 v single phase operation the primary voltage to the trans former must be changed Remove the red lead from the com pressor contactor capping it with a wire nut and connecting the orange 230 vac lead wire from the transformer to the compres sor contactor NOTE Failure to change the primary voltage lead when using 240 vac line voltage may result in electrical component dam age and intermittent system failure Table 4 Cabinet Electrical Data 50VS Unit UNIT VOLTAGE VOLTAGE MAX FUSE SIZE A V Hz Ph V Hz Ph 50VSA B 15 50VSC D 15 50VSE F 208230460 2082201860 ons 25 50VSG H 25 50VSI J 25 50VSK L 35 50VSM N 40 LEGEND FLA Full Load Amps Table 5 Chassis Electrical Data 50VS Unit E V Hz Ph AMP A A A A A 50VSA B 4 60 50VSC D 6 25 SOVSE F 208230160 133 25 5 7o 8 80 50VSG H_ 208230160 136 4 6 01 1765 75 9 00 50 8 208230160 151 25 862 89 20 1170 50VSK L 14 10 50VSM N 16 50 LEGEND LRA Locked Rotor Amps RLA Rated Load Amps Table 6 50VS Unit Blower Performance and Speed Wiring UNIT FAN SPEED RATED MIN AND WIRING CFM LOW EXTERNAL STATIC PRESSURE in wg crm o oor 0 05 015 02 025 035
11. of the unit This sensor is for monitoring purposes only DISCHARGE AIR TEMPERATURE SENSOR FAILURE DAT If the discharge temperature thermistor fails it will not affect the operation of the unit This sensor is for monitor ing purposes only FREEZE PROTECTION 1 TEMPERATURE SENSOR FAILURE FP1 If the freeze protection 1 thermistor fails for 30 continuous seconds lockout will occur The compressor will then be deenergized and the blower will deen ergize 15 seconds after the compressor is deenergized The sen sor must be replaced if this lockout occurs FREEZE PROTECTION 2 TEMPERATURE SENSOR FAILURE FP2 If the freeze protection 2 thermistor fails for 30 continuous seconds an FP2 lockout will occur The compressor will then be deenergized and the blower will deenergize 15 seconds after the compressor is deenergized The sensor must be replaced if this lockout occurs SERVICE A WARNING Electrical shock can cause personal injury or death When installing or servicing system always turn off main power to system There may be more than one disconnect switch A WARNING The installation and servicing of air conditioning equip ment can be hazardous due to system pressure and electri cal components Only trained and qualified service personnel should install repair or service air conditioning equipment Water Coil Maintenance CLOSED LOOP SYSTEM Other Water Loop Applica tions Generall
12. okay to lt 0 5 ppm lt 0 5 ppm Maximum allowable at maximum water temperature 50 F 10 C Br 240 100 38 lt 20 lt 150 lt 400 ppm lt 250 ppm lt 150 ppm lt 1000 ppm lt 550 ppm lt 375 ppm gt 1000 ppm gt 550 ppm gt 375 ppm lt 10 ppm lt 1 ppm sandfree for reinjection of particles and a maxi mum velocity of 6 fps Filtered for maximum 800 micron size Any par ticulate that is not removed can potentially clog components Use cupronickel heat exchanger when concentrations of calcium or sodium chloride are greater than 125 ppm are present Seawater is approximately 25 000 ppm ttlf the concentration of these corrosives exceeds the maximum allowable level then the potential for serious corrosion problems exists Sulfides in the water quickly oxidize when exposed to air requir ing that no agitation occur as the sample is taken Unless tested immediately at the site the sample will require stabilization with a few drops of one Molar zinc acetate solution allowing accurate sulfide determination up to 24 hours after sampling A low pH and high alkalinity cause system problems even when both values are within ranges shown The term pH refers to the acidity basic ity or neutrality of the water supply Below 7 0 the water is con sidered to be acidic Above 7 0 water is considered to be basic Neutral water contains a pH of 7 0 To convert ppm to grains per gallon divide by 1
13. plentiful and of good quality See Table 3 for wa ter quality guidelines IMPORTANT Failure to comply with the above required water quality and quantity limitations and the closed system application design requirements may cause damage to the tube in tube heat exchanger This damage is not the responsibility of the manufacturer In all applications the quality of the water circulated through the heat exchanger must fall within the ranges listed in the Water Quality Guidelines table Consult a local water treat ment firm independent testing facility or local water authority for specific recommendations to maintain water quality within the published limits Table 3 Water Quality Guidelines HX CLOSED CONDITION MATERIAL RECIRCULATINGt Scaling Potential Primary Measurement OPEN LOOP AND RECIRCULATING WELL Above the given limits scaling is likely to occur Scaling indexes should be calculated using the limits below pH Calcium Hardness Method All N A pH lt 7 5 and Ca Hardness lt 100 ppm Index Limits for Probable Scaling Situations Operation outside these limits is not recommended Scaling indexes should be calculated at 150 F for direct use and HWG applications and at 90 F for indirect HX use A monitoring plan should be implemented Ryznar Stability Index Langelier Saturation Index Iron Fouling Fe2 Ferrous Bacterial Potential Iron Fouling Corrosion Preventiont
14. tain 2 hoses one balancing valve with shutoff one shut off and 2 hose adaptors 4 Locate the valves inside the unit cabinet marked WATER IN and WATER OUT Attach the hoses to the water valve Always use a back up wrench when tightening the hose to the valve 5 Ifthe valves are removed to attach the hoses be sure the O ring is in the valve before attaching to the union in the cabinet NOTE The valve union is to be hand tight plus an addi tional 1 4 of a turn always use back up wrench on the fit tings being tightened 6 Attach flex hoses Let the universal ends of the hoses hang inside the cabinet See Table 8 for bend allowances NOTE Be sure the valve handles and P T ports are in a position that enables them to be opened and closed and used for system readings Check the swivel ends of the hoses Gaskets must be in the hose for proper seal BALL VALVE SUPPLY PRESSURE TEMP TEST PLUG VALVE DETAIL VIEW 1 2 in FLEX HOSE 50VSC VSH UNITS 3 4 in FLEX HOSE 50VSI VSN UNITS RETURN BALANCING VALVE PRESSURE TEMP TEST PLUG Fig 11 Hose Kit Installation Table 8 Braided Water Hose Bend Allowances HOSE DIAMETER BEND ALLOWANCE in 1 5 25 8 3 4 475 NOTE Do not allow hoses to rest against sharp edges or structural building components Compressor vibration may cause hose failure and vibration transmission through the hoses to the structure caus ing noise c
15. 08 x 6 69 9 21 x 9 99 Airflow cfm 20 40 540 640 80 1120 1300 Static Pressure in wg 0 WATER CONDENSATE SIDE DATA Flow Rate gpm 26 32 45 52 65 85 9 5 Water Connection Size FPT in 1 2 3 4 Water Side Pressure Drop psi 58 58 15 8 48 72 102 Condensate Connection Size in 3 4 AIR COIL DATA Total Face Area sq ft 148 1 411 144 14 481 1 Tube Size in 3 8 Fin Spacing FPI 12 14 10 Number of Rows 2 3 2 3 CABINET DATA Depth in 18 24 Height in 88 88 Width in 18 24 Standard Filter 1 in Washable 14 1 4 x 18 1 2 14 1 4 x 22 1 2 19 x 28 3 4 LEGEND Fins Per Inch PSC Permanent Split Capacitor CONNECTION i SIZE FPT SIZE in 50VSAB 509865 T 50 A 50VSG H A 5098 50951 A S0VSMN A SUPPLY GRILLE OPTIONAL 24V THERMOSTAT LOCATION CONTROL BOX CONTROL BOX ACCESS MOTOR BLOWER OPTIONAL AUTO FLOW FILTER 1040S REGULATOR LOCATION FACTORY INSTALLED SUPPLY AND RETURN FEEDERS WITH BALL VALVES AIR COIL HOSE KITS RETURN AIR OPENING PUMP CHASSIS AIR COIL DRAIN PAN CONDENSATE DRAIN PAN ACOUSTICAL INSULATION FACTORY INSTALLED P TRAP Fig 1 50VS Unit Dimensional Data
16. 1 Freeze Protection Water Side Capacitor 5 Accessory relays 24 vac maximum activated compressor FP2 Freeze Protection Air Side output HP High Pressure Switch o High Pressure Switch 6 For 230 v operation remove the red wire and replace with the Pressure Switch F Beto 50 6080 BacNet or LonWorks card connect com LWT Leaving Water Temperature i ae RV Reversing Male Low Pressure Switch municating thermostat then short J1 2 3 If adding terminating Factory Low Voltage Wiring resistance short J1 1 2 Factory High Voltage Wiring Temperature Thermistor Field Low Voltage Wiring Field Line Voltage Wiring 22 Condensate Switch Optional Block Internal PCB Connection Ho Relay Contacts Fig 10 Typical 50VS Unit Control Wiring 14 Step 7 Wire Field Control Connections STANDARD 24 V THERMOSTAT CONNECTIONS The thermostat should be wired directly to the microprocessor board terminals labeled to the corresponding terminals R C Y1 Y2 0 G Installation of Optional Wall Mounted Thermostat The unit can be controlled with a remote 24 volt surface mounted thermostat such as the Honeywell TH5320U1001 or TH6320U1000 series thermostat Refer to instructions pro vided with remote thermostat for wiring instructions using 2 stages of heating and 2 stages of cooling for a heat pump system Below
17. 17 18 System Checkout 18 FIELD SELECTABLE INPUTS 18 19 DIP Switch Settings and Operation 18 Standard 24 vac Sequence of Operation 19 5 19 20 Operating Limits 20 Lockout Mode 20 SERVICE 32 33 te 21 Water Coil Maintenance 21 Filter S ao ad 21 Condensate Drain 21 21 Fan 1 21 Evaporator 21 Cabinet 21 Refrigerant 5 516 1 21 21 22 Lockout 21 START UP CHECKLIST CL1 CL2 SAFETY CONSIDERATIONS Installation and servicing of air conditioning equipment can be hazardous due to system pressure and electrical components Only trained and qualified service personnel should install repair or service air conditioning equipment Untrained personnel can perform basic maintenance func tions such as cleaning coils and filters and replacing filters All other operations
18. 7 Hardness in mg l is equivalent to ppm gt Step 6 Connections Wire Field Power A WARNING Supply Electrical shock can cause personal injury or death When installing or servicing system always turn off main power to system There may be more than one disconnect switch ELECTRICAL LINE VOLTAGE field installed wir ing including electrical ground must comply with the National Electrical Code NEC as well as all applicable local codes Re fer to Tables 4 and 5 for fuse sizes Refer to Table 6 for blower speed wiring See Fig 10 for field connections or the electrical diagram located on the back of the electrical compartment front panel All electrical connections must be made by the installing or electrical contractor All final electrical connections must be made with a length of flexible conduit to minimize vibration and sound transmission to the building General Line Voltage Wiring Be sure the available power is the same voltage and phase shown on the unit serial plate Line and low voltage wiring must be done in accordance with local codes or the NEC whichever is appli cable POWER CONNECTION Units Equipped with Disconnect Connect incoming line voltage to the disconnect switch and ground wire to the ground lug provided inside the electrical compartment Units without Disconnect Line voltage connection is made by connecting the incoming line voltage wires to the line side s
19. AQUAZONE 50VS Vertical Stack Water Source Heat Pump with PURON R 410A Refrigerant Installation Start Up and Service Instructions CONTENTS Page SAFETY CONSIDERATIONS 1 65 1 0 2 17 Step 1 Check 0 5 6 2 Step 2 Check 8 e STORAGE PROTECTION INSPECT UNIT Step 3 Locate 8 Step 4 Install Drywall 8 Step 5 Install Cabinet and Riser 8 SYSTEM PIPING ARRANGEMENTS RISER MATERIAL SIZING AND INSTALLATION RISER EXPANSION RISER CONNECTIONS COMMERCIAL WATER LOOP APPLICATION GROUND LOOP HEAT PUMP APPLICATION OPEN LOOP GROUND WATER SYSTEMS Step 6 Wire Field Power Supply Connections 13 e ELECTRICAL LINE VOLTAGE POWER CONNECTION 208 230 VOLT OPERATION Step 7 Wire Field Control Connections 15 Step 8 Clean and Flush 15 Step 9 Install Hose 15 Step 10 Install Chassis into the Cabinet 16 Step 11 Install Return Panel 16 Step 12 Install Supply Grille 17
20. ARI Standard 110 e Determination of operating limits is dependent primarily upon three factors a Ambient temperature b Return air temperature c Water temperature When any one of these factors is at minimum or maximum levels the other two factors should be at normal levels to ensure proper unit operation 20 Extreme variations in temperature and humidity and or cor rosive water or air will adversely affect unit performance reli ability and service life Lockout Mode If the microprocessor board is flashing a system warning and the unit is locked out and not running the lockout can be cleared from the microprocessor by a mo mentary shutdown of incoming line voltage 208 vac or 230 vac A lockout that still occurs after line voltage shut down means that the fault still exists and needs to be repaired HIGH PRESSURE LOCKOUT The high pressure lockout will occur if the discharge pressure of the compressor exceeds 600 psi The lockout is immediate and has no delay from the time the high pressure switch opens to the lockout Upon lockout the compressor will be deenergized immediately The blower will be deenergized 15 seconds after the compres sor is deenergized LOW PRESSURE LOCKOUT LP The low pressure lockout will occur if the suction pressure falls below 40 psi for 30 continuous seconds The compressor will then be de energized and the blower will deenergize 15 seconds after the compressor is deenerg
21. Do not allow the weight of the ductwork to rest on the unit 6 Provide adequate clearance for filter replacement and drain pan cleaning Do not allow piping conduit etc to block filter access 7 Provide sufficient access to allow maintenance and servicing of the fan and fan motor compressor and coils Removal of the entire unit from the closet should not be necessary 8 Provide an unobstructed path to the unit within the closet or mechanical room Space should be sufficient to allow removal of unit if necessary 9 Provide ready access to water valves and fittings and screwdriver access to unit side panels discharge collar and all electrical connections 10 Where access to side panels is limited pre removal of the control box side mounting screws may be necessary for future servicing STORAGE If the equipment is not needed immediately at the jobsite it should be left in its shipping carton and stored in a clean dry area of the building or in a warehouse Units must be stored in an upright position at all times If carton stacking is necessary stack units a maximum of 3 cartons high Do not re move any equipment from its shipping package until it is need ed for installation PROTECTION Once the units are properly positioned on the jobsite cover them with either a shipping carton vinyl film or an equivalent protective covering Cap open ends of pipes stored on the jobsite This precaution is especially import
22. IRST STAGE Y1 When the microproces sor receives Y 1 at the 24 vac thermostat input connection the unit will proceed with the cooling first stage sequence The mi croprocessor must receive these signals for 2 continuous sec onds before it recognizes the inputs as valid Once the input signals are determined to be valid the reversing valve will energize deenergize after 5 seconds The microprocessor will then verify that the anti short cycling delay has been satisfied Once the anti short cycling delay has been satisfied the com pressor and will cycle On The blower will cycle On in low speed 15 seconds after the compressor is cycled On HEATING SECOND STAGE Y2 When the micro processor receives Y1 Y2 at the 24 vac thermostat input connection the unit will proceed with the heating second stage sequence The microprocessor must receive these signals for 2 continuous seconds before it recognizes the inputs as valid Once the input signals are determined to be valid the reversing valve will energize deenergize after 5 seconds The microprocessor will then verify that the anti short cy cling delay has been satisfied Once the anti short cycling delay has been satisfied the compressor and will cycle On The blower will cycle On in high speed 15 seconds after the com pressor is cycled On FAN ONLY MODE G The fan only mode can be used only with a 24 vac thermostat and will energize the
23. LASH a 6 6 POSSIBLE FAULT CAUSE COMMTSTAT LED1 LED2 LED3 LED4 LED1 LED2 LED3 LED4 High Pressure Lockout Low Airflow Heating Low ON Water Temperature lt 35 F or lt 15 F Heating Condensate Overflow Clogged Drain Line Over Under Low Voltage Protection 18 vac gt Er 11 OFF FLASH FLASH OFF OFF ON ON OFF Loss of Power Brown Out voltage 30 vac LWT Sensor Failure Low Water Temperature FLASH OFF Resistance Above or Below Specification DAT Sensor Failure Discharge Air Er 14 FLASH OFF OFF FLASH ADONG Temperature or Below Specification FP1 Sensor Failure gris gris Freeze Protection FLASH OFF FLASH OFF OFF Sensor Resistance Above or Below Specification FP2 Sensor Failure Sensor Resistance Above LEGEND LED Light Emitting Diode NOTE Warning LEDs and error codes are found on the system con trol board Copyright 2008 Carrier Corporation Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53500046 01 Printed in U S A Form 50VS 1SI Pg 22 311 11 08 Replaces New START UP CHECKLIST CUSTOMER JOB NAME MODEL NO SERIAL NO DATE PRE START UP DOES THE UNIT VOLTAGE CORRESPOND WITH THE SUPPLY VOLTAGE AVAILABLE Y N HAVE THE POWER AND CONTROL WIRING CONNECTIONS BEEN MADE AND TERMINALS
24. P APPLICATION NOTE In most commercial building applications using a frame style or plate style heat exchanger should be used to iso late the water source heat pump units from the ground water loop increasing system performance equipment longevity Pre Installation Prior to installation locate and mark all ex isting underground utilities piping etc Install loops for new construction before sidewalks patios driveways and other construction has begun During construction accurately mark all ground loop piping on the plot plan as an aid in avoiding po tential future damage to the installation 11 Piping Installation All earth loop piping materials should be limited to polyethylene fusion only for in ground sections of the loop Galvanized or steel fittings should not be used at any time due to their tendency to corrode All plastic to metal threaded fittings should be avoided due to their potential to leak in earth coupled applications A flanged fitting should be sub stituted P T plugs should be used so that flow can be measured using the pressure drop of the unit heat exchanger Earth loop temperatures can range between 25 and 110 Flow rates between 2 25 and 3 0 gpm per ton of cooling capac ity is recommended in these applications Test individual horizontal loop circuits before backfilling Test vertical U bends and pond loop assemblies prior to installation Pressures of at least 100 psi should be used when t
25. UID FACTOR Btu hr SUPERHEAT SUCTION TEMPERATURE SUCTION SATURATION TEMPERATURE DEG SUBCOOLING DISCHARGE SATURATION TEMPERATURE LIQUID LINE TEMPERATURE DEG F Use 500 for water 485 for antifreeze Copyright 2008 Carrier Corporation Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53500046 01 Printed in U S A Form 50VS 1SI Pg CL 2 311 11 08 Replaces New CUT ALONG DOTTED LINE CUTALONGDOTTEDLINE 0
26. ally riser copper type size length and insulation thickness are determined by the location of the water source heat pump unit in the building Chilled water and hot water risers are available in Type M Type L copper varying diameters from 3 4 to 21 2 in and with either no insulation 5 or 3 4 in thick closed cell foam insulation Condensate risers are available in Type M copper varying diameters from 3 4 to 11 4 in and with no insulation 2 or 3 4 in thick closed cell foam insulation All factory supplied risers and riser extensions are insulated for the full length of the riser eliminating the need for field insulation Insulation is not required on loop water piping except where the piping runs through unheated areas outside the building or when the loop water temperature is below the minimum expected dew point of the pipe ambient conditions Insulation is required if loop water temperature drops below the dew point insulation is required for the ground loop applications in most climates Riser sizing is generally based on the water flow require ments of each unit and the units on higher and lower floors that tie into the same riser column depending on the piping system chosen Water piping is often designed at approximately 5 ft s Keeping this in mind risers can be reduced in size as the water flow decreases from floor to floor For low rise buildings riser sizes can be of a single diameter The reduced material handling
27. ame Dimensions 50VSI VSN Units NOTE All dimensions are in inches Step 2 Check Unit Upon receipt of shipment at the jobsite carefully check the shipment against the bill of lading Make sure all units have been received Inspect the car ton or crating of each unit and inspect each unit for damage Ensure the shipping company makes proper notation of any shortages or damage on all copies of the freight bill Concealed damage not discovered during unloading must be reported to the shipping company within 15 days of receipt of shipment NOTE It is the responsibility of the purchaser to file all necessary claims with the shipping company 1 Be sure that the location chosen for unit installation pro vides ambient temperatures maintained above freezing Well water applications are especially susceptible to freezing 2 Be sure the installation location is isolated from sleeping areas private offices and other acoustically sensitive spaces NOTE A sound control accessory package may be used to help eliminate sound in sensitive spaces 3 Check local codes to be sure a secondary drain pan is not required under the unit 4 Be sure unit is mounted at a height sufficient to provide an adequate slope of the condensate lines If an appropri ate slope cannot be achieved a field supplied condensate pump may be required 5 Provide sufficient space for duct connection
28. ant in areas where painting plastering or spraying of fireproof mate rial etc is not yet complete Foreign material that accumulates within the units can prevent proper start up and necessitate costly clean up operations Before installing any of the system components be sure to examine each pipe fitting and valve and remove any dirt or foreign material found in or on these components CAUTION DO NOT store or install units in corrosive environments or in locations subject to temperature or humidity extremes e g attics garages rooftops etc Corrosive conditions and high temperature or humidity can significantly reduce performance reliability and service life Always move units in an upright position Tilting units on their sides may cause equipment damage INSPECT UNIT To prepare the unit for installation com plete the procedures listed below 1 Compare the electrical data on the unit nameplate with ordering and shipping information to verify that the correct unit has been shipped 2 Do not remove the packaging until the unit is ready for installation 3 Verify that the unit s refrigerant tubing is free of kinks or dents and that it does not touch other unit components 4 Inspect all electrical connections Be sure connections are clean and tight at their terminations 5 Remove any blower support cardboard from inlet of the blower 6 Locate and verify any accessory kit located in compress
29. are not recommended for 50VSA VSD units arge Cabine Fig 12 50VS Unit Airflow Arrangements 17 Table 9 Limits of Operation Cooling F Heating F 0 85 Rated Ambient Air 68 Rated Entering Air db wb 68 Entering Air Maximum db wb 80 30 Air Limits Ambient Air Maximum Ambient Air Minimum Entering Water Minimum 0 20 Entering Water Normal 50 110 30 70 Entering Water Maximum 90 LEGEND db Dry Bulb wb Wet Bulb Requires additional insulation when operating below the dew point 4 Unit fan Manually rotate fan to verify free rotation and ensure that blower wheel is secured to the motor shaft Be sure to remove any shipping supports if needed DO NOT oil motors upon start up Fan motors are pre oiled at the factory Check unit fan speed selection and compare to design requirements 5 Condensate line Verify that condensate line is open and properly pitched toward drain 6 Water flow balancing Record inlet and outlet water tem peratures for each heat pump upon start up This check can eliminate nuisance trip outs and high velocity water flow that could erode heat exchangers 7 Unit controls Verify that the microprocessor DIP dual in line package switches are set for proper operation and system configuration System Checkout 1 System water temperature Check water temperature for proper range and also verify heating and cooling set points for proper operation 2 System
30. are typical thermostat connections and color codes Re Power Red R___R Rc joined by factory jumper wire Red Y Compressor Contactor Stage 1 Yellow Y2 Compressor Contactor Stage 2 Blue 24 Common White O Reversing Valve Orange G Fan Relay Green NOTE The terminal block on the microprocessor board is removable for ease of thermostat wiring installation Low voltage wiring between the unit and the wall thermo stat must comply with all applicable electrical codes 1 NEC and local codes and be completed before the unit is installed Use of six wire color coded low voltage cable is recommended Table 7 lists recommended wire sizes and lengths to install the thermostat The total resistance of low voltage wiring must not exceed 1 ohm Any resistance in excess of 1 ohm may cause the control to malfunction because of high voltage drop Table 7 Recommended Wire Gage Low Voltage Thermostat MAXIMUM RUN UNIT TO WIRE SIZE gage THERMOSTAT ft 22 30 20 50 18 75 16 125 14 200 Step 8 Clean and Flush System Cleaning and flushing the unit is the most important step to ensure proper start up and continued efficient operation of the system Follow the instructions below to properly clean and flush the system 1 Verify that electrical power to the unit is off 2 Verify that supply and return riser service valves are closed at each unit 3 Fill the system with water lea
31. ation operation and ical room Be sure to allow adequate space around the unit for maintenance instructions are provided with each unit Before servicing See Fig 1 5 for unit dimensions unit start up read all manuals and become familiar with the unit and its operation Thoroughly check out the system before A CAUTION operation Complete the inspections and instructions listed below to prepare a unit for installation See Table 1 for unit hvsical dat To avoid equipment damage do not use units as a source of physical data heating or cooling during the construction process The mechanical components and filters used in these units quickly becomes clogged with construction dirt and debris which may cause system damage IMPORTANT This equipment is designed for indoor installation ONLY Extreme variations in temperature humidity and corrosive water or air will adversely affect the unit performance reliability and service life Table 1 Physical Data 50VS Unit UNIT 50VSM N COOLING CAPACITY Btuh 32 700 HEATING CAPACITY Btuh 45 000 CABINET WEIGHT Ib ees eT 170 CHASSIS WEIGHT Ib 15 19 12 187 158 205 COMPRESSOR 1 each Rotary Scroll High Side Pressure psig Low Side Pressure psig FACTORY REFRIGERANT CHARGE R 410A oz eet eer Se ee 61 8 Fan Motor Type Speeds PSC 2 speed Blower Wheel Size Depth x Width in Std High Static 7
32. deenergized 15 seconds after the compres sor is deenergized LOW PRESSURE LOCKOUT LP The low pressure lockout will occur if the suction pressure falls below 40 psi for 30 continuous seconds The compressor will then be deener gized and the blower will deenergize 15 seconds after the com pressor is deenergized FREEZE PROTECTION 1 LOCKOUT The freeze pro tection 1 lockout will occur if the liquid line temperature falls below the set point 15 F or 30 F for 30 continuous seconds See DIP switch 2 description in the DIP Switch Settings and Operation section The compressor will then be deenergized and the blower will deenergize 15 seconds after the compressor is deenergized FREEZE PROTECTION 2 LOCKOUT The freeze pro tection 2 lockout will occur if the air coil temperature falls be low the set point 32 F for 30 continuous seconds See DIP switch 2 description in the DIP Switch Settings and Operation section The compressor will then be deenergized and the blower will deenergize 15 seconds after the compressor is deenergized CONDENSATE OVERFLOW 1 LOCKOUT CO1 The unit contains one condensate overflow sensor located in the chassis drain pan below the air coil A condensate lockout will occur if the sensor senses condensate for 30 continuous seconds The compressor will then be deenergized and the blower will deenergize 15 seconds after the compressor is deenergized OVER UNDER VOLTAGE PROTECTION If the unit cont
33. equipment cabinet 10 2 0 6 When all units on a riser are anchored into place com plete riser joints as follows a Verify that all riser joints are vertically aligned and that risers penetrate at least 1 in into the swaged joint of the riser below DO NOT let riser joint bot tom out b Braze riser joints with a high temperature alloy using proper Phos copper of Silfos Soft solder 50 50 60 40 85 15 or 95 5 or low temperature alloys are not suitable riser weld materials c Anchor built in risers to the building structure with at least one contact point To accommodate vertical expansion and contraction DO NOT fasten risers rigidly within the unit d Verify that unit shut off valves are closed DO NOT OPEN VALVES until the system has been cleaned and flushed e Flush system refer to System Cleaning and Flush ing section for more information f Install vents in piping loop as required to bleed the system of air accumulated during installation 7 Install supply duct extension s provided with the cabinet by folding the tabs down to secure extension s to cabinet COMMERCIAL WATER LOOP APPLICATION Com mercial systems typically include a number of units connected to a common piping system Any unit plumbing maintenance work can introduce air into the piping system therefore air elimination equipment is a major portion of the mechanical room plumbing In piping systems expected to utilize water temperatur
34. es below 50 in closed cell insulation is re quired on all piping surfaces to eliminate condensation Metal to plastic threaded joints should never be used due to their ten dency to leak over time Teflon tape thread sealant is recommended for use in system piping to minimize internal fouling of the heat exchanger Do not over tighten connections and route piping so as not to inter fere with service or maintenance access Hose kits include shut off valves pressure temperature P T plugs for performance measurement high pressure stainless steel braided hose and hose adaptors Balancing valves and variable speed pumping systems my also be used The piping system should be flushed to remove dirt pipe shavings chips and other foreign material prior to operation See System Cleaning and Flushing section The flow rate is usually set between 2 25 and 3 5 gpm per ton for most applications of water loop heat pumps To ensure proper main tenance and servicing P T ports are imperative for temperature and flow verification as well as performance checks Water loop heat pump cooling tower boiler systems typi cally utilize a common loop maintained between 60 to 90 F The use of a closed circuit evaporate cooling tower with a sec ondary heat exchanger between the tower and the water loop is recommended If an open type cooling tower is used continu ously chemical treatment and filtering will be necessary GROUND LOOP HEAT PUM
35. esting Do not exceed the pipe pressure rating Test entire system when all loops are assembled Flushing the Earth Loop Upon completion of system in stallation and testing flush the system to remove all foreign ob jects and purge to remove all air Antifreeze In areas when minimum entering loop tempera tures drop below 40 F or where piping will be routed through areas subject to freezing antifreeze is required Alcohols and glycols are commonly used as antifreeze however your local Carrier distributor should be consulted for the antifreeze best suited to your area Freeze protection should be maintained to 15 F below the lowest expected entering loop temperature For example if 30 F is the minimum expected entering loop tem perature the leaving loop temperature would be 25 to 22 F and freeze protection should be at 15 Calculation as follows 30 15 15 All alcohols should be premixed and pumped from a reser voir outside of the building when possible or introduced under the water level to prevent fumes Calculate the total volume of fluid in the piping system Then use the percentage by volume shown in Table 2 for the amount of antifreeze needed Anti freeze concentration should be checked from a well mixed sample using a hydrometer to measure specific gravity Table 2 Antifreeze Percentages by Volume MINIMUM TEMPERATURE FOR LOW TYPE TEMPERATURE PROTECTION 10 15 20F
36. ety alert symbol When this symbol is displayed on the unit and in instructions or manuals be alert to the potential for personal injury A WARNING Electrical shock can cause personal injury or death Before installing or servicing system always turn off main power to system There may be more than one disconnect switch Turn off accessory heater power if applicable GENERAL This installation and start up instructions literature is for Aquazone water source heat pump systems The SOVS water source heat pump WSHP is a vertically stacked unit with electronic controls designed for year round cooling and heating IMPORTANT The installation of water source heat pump units and all associated components parts and accessories which make up the installation shall be in accordance with the regulations of ALL authorities having jurisdiction and MUST conform to all applicable codes It is the responsi bility of the installing contractor to determine and comply with ALL applicable codes and regulations Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53500046 01 Printed in U S A Form 50VS 1SI Pg 1 311 10 08 Replaces New INSTALLATION The 50 8 units are designed for indoor installations Units are typically installed in a floor level closet or a small mechan Step 1 Check Jobsite Install
37. g Verify that voltage is within an acceptable range for the unit and wiring and fuses break ers are properly sized Verify that low voltage wiring is complete 3 Entering water and air Ensure that entering water and air temperatures are within operating limits of Table 9 DOUBLE SUPPLY t SUPPLY AIR TO ROOM RETURN AIR FROM ROOM Field supplied and installed piping Cross hoses in slave cabinet 36 in hoses required in slave unit Single Double Triple He LEGEND 58 1 Cabinet 1412 10x8 Small Cabinet Dimension to suit local codes Gondensate Vrain 50VSC D 44x12 10x8 10x8 and installer copay Small Cabinet 50VSE F Small Cabinet 14 12 ia NOTES 50VSG H 14 12 108 1 Refer to the table and the airfl ts above to determine grill 14 12 10x8 10 8 Refer to the table and the airflow arrangements above to determine grille Small Cabinet size and location based on the type and size of the unit cabinet chassis 50VSI J combination Large Cabinet 16 14 12 10 12x10 2 The riser is defined as being the rear of each unit Supply air grilles and return air access panel can be any side except rear 16 14 12 10 12 10 3 Return air location also denotes the control location and servicing access 9 4 Single discharge openings are not recommended for 50VSI VSN units L 0 16 14 12x10 12x10 Triple discharge openings
38. he min imum runtime is satisfied COOLING FIRST STAGE Y1 O When the micropro cessor receives Y1 O at the 24 vac thermostat input connec tion the unit will proceed with the cooling first stage sequence The microprocessor must receive these signals for 2 continu ous seconds before it recognizes the inputs as valid Once the input signals are determined to be valid the reversing valve will energize deenergize after 5 seconds The microprocessor will then verify that the anti short cy cling delay has been satisfied Once the anti short cycling delay has been satisfied the compressor and will cycle On The blower will cycle On in low speed 15 seconds after the com pressor is cycled On COOLING SECOND STAGE Y2 When the mi croprocessor receives Y1 Y2 at the 24 vac thermostat in put connection the unit will proceed with the cooling second stage sequence The microprocessor must receive these signals for 2 continuous seconds before it recognizes the inputs as val id Once the input signals are determined to be valid the revers ing valve will energize deenergize after 5 seconds The micro processor will then verify that the anti short cycling delay has been satisfied Once the anti short cycling delay has been satis fied the compressor and will cycle On The blower will cycle On in high speed 15 seconds after the compressor is cycled On DIP Switch 6 19 HEATING F
39. inimum flow rate for entering water temperatures below 50 F is 2 0 gpm per ton Filters A clean filter must be used to obtain maximum performance Filters should be inspected every month under normal operating conditions It is especially important to pro vide consistent washing of these filters in the opposite direc tion of the normal airflow once per month Never operate a unit without a filter severe system damage can occur Condensate Drain In areas where airborne bacteria may produce an algae build up in the drain pan it may be nec essary to remove and treat the drain pan chemically with an al gaecide approximately every three months to minimize the problem The condensate pan may also need to be cleaned peri odically to ensure indoor air quality The condensate drain can pick up lint and dirt especially with dirty filters Inspect the drain twice a year to avoid the possibility of plugging Compressor Conduct annual amperage checks to in sure that amp draw is no more than 10 greater than indicated on the serial data plate Fan Motors All units have lubricated fan motors Peri odic maintenance oiling is not recommended as it will result in dirt accumulating in the excess oil and cause eventual motor failure Conduct annual dry operation check and amperage 21 check to ensure amp draw is no more than 10 greater than in dicated on serial data plate Evaporator Coil The air coil must be cleaned to
40. is filled to pro vide a water seal d Refer to Table 12 Check the temperature of both entering and leaving water If temperature is within range proceed with the test If temperature is outside of the operating range see Troubleshooting section e Check air temperature drop across the air coil when compressor is operating Air temperature drop should be between 15 and 25 F f Turn thermostat to OFF position A hissing noise indicates proper functioning of the reversing valve g Allow 5 minutes between tests for pressure to equalize before beginning heating test h Adjust the thermostat to the lowest setting Place the thermostat mode switch in the HEAT position i Slowly raise the thermostat to a higher temperature until the compressor activates j Check for warm air delivery within a few minutes after the unit has begun to operate k Refer to Table 9 Check the temperature of both entering and leaving water If temperature is within range proceed with the test If temperature is out side of the operating range check refrigerant pressures 1 Check air temperature rise across the air coil when compressor is operating Air temperature rise should be between 20 and 30 F m Check for vibration noise and water leaks 6 If unit fails to operate perform troubleshooting analysis see troubleshooting section If the check described fails to reveal the problem and the unit still does not operate c
41. ividual unit riser columns This riser arrangement allows for more flexibility in individual unit riser sizing but has the same general characteristics as the reverse return system described above It may also be a better fit for the particular structural and architectural requirements of the building This piping system may also be used on 4 pipe systems Regardless of the system selected optimum performance can only be achieved through adjustment to the recommended water flow at each individual unit see Table 1 for individual unit water flow requirements RISER MATERIAL SIZING AND INSULATION Some of the factors affecting riser application and sizing are noise tube erosion and economics Water source heat pumps maybe supplied with factory installed risers the riser material diameter length and insulation thickness must be determined for each unit based on its positioning within the building Figure 8 displays riser tube diameter sizes as a function of flow gpm friction loss and water velocity For maximum riser velocity on pressure drop per 100 ft refer to ASHRAE Amer ican Society of Heating Refrigeration and Air Conditioning TO ABOVE FLOOR Fill SUPPLY OPENING 1 suPPLY OPENING A I 11 88 5 in D LI A oe B Engineers Fundamentals Handbook for Riser Sizing Gener
42. ized FREEZE PROTECTION 1 LOCKOUT The freeze pro tection 1 lockout will occur if the liquid line temperature falls below the set point 15 F or 30 F for 30 continuous seconds See DIP switch 2 description in the DIP Switch Settings and Operation section The compressor will then be deenergized and the blower will deenergize 15 seconds after the compressor is deenergized FREEZE PROTECTION 2 LOCKOUT The freeze pro tection 1 lockout will occur if the air coil temperature falls be low the set point 32 F for 30 continuous seconds See DIP switch 2 The compressor will then be deenergized and the blower will deenergize 15 seconds after the compressor is deenergized CONDENSATE OVERFLOW 1 LOCKOUT 1 The unit contains one condensate overflow sensor located in the chassis drain pan below the air coil A condensate lockout will occur if the sensor senses condensate for 30 continuous seconds The compressor will then be deenergized and the blower will deenergize 15 seconds after the compressor is deenergized OVER UNDER VOLTAGE PROTECTION If the unit control voltage is less than 18 vac or greater than 30 vac the unit will shut down all inputs immediately Once the voltage has reached acceptable levels the unit microprocessor will power automatically and resume previous operation LEAVING WATER TEMPERATURE SENSOR FAIL URE LWT If the leaving water temperature thermistor fails it will not affect the operation
43. lack 532001001 i 8 9 gt sae TH6320U1000 00 qe R Note 2 1 i 9 gt white Oo 2 ie 102 A oly fi 84 Note 5 Accessory nor H SIm 1 e Whit wie J3 i Hnit Relay 1 2 Nor a gt lige tne 2 Accessory 2 oie 6 Relay 2 com 112 0 4 P3 5 o 9 gt Black HP Q Bacnet Lonworks com 3 2 1 88 bes ome Card a oS com 2 1 5 fa aa 0 8 08 2 24 Note 7 gt Orang RV Connect to FF 4 elo K Bol Network O gt Note 1 0 Ke 59995 12 1 LEGEND NOTES 881 Fan Relay Speed 1 ick Connect Terminal 1 Used for optional communicating thermostat BR2 Fan Relay Sheed 2 QuickConnect Termi 2 Cut JP1 or JP2 for dry contact output accessory relay 1 and 2 CC Compressor Contactor Q Screw Terminal 3 If a single stage thermostat is used place a jumper wire between CO Condensate Overflow Y1 Y2 at P1 terminal Compressor Relay gt Relay Coil 4 If the disconnect option is not installed connect the power to the DAT Discharge Air Temperature L1 and L2 lugs on the compressor contactor FP
44. ns necessitated by variations in floor to ee 38 20 30 RL floor dimensions including cutting off or extending risers is the sole responsibility of the installing contractor Additional expansion compensation must be made in the riser system in the field where movement is expected to exceed the factory allowances Figure 9 displays the expansion charac teristics of risers compared to water temperature differential Assuming a minimum water temperature of 20 F and a maximum water temperature of 120 F the temperature differ ence of 100 F indicates 90 feet of riser will expand or contract 1 inch To eliminate stress a riser system must be anchored at least once to the building structure Technical information on pipe expansion contraction and anchoring can be found in the ASHRAE HVAC Systems and Equipment Handbook and vari ous other technical publications Riser expansion and the an choring of each unit is the responsibility of the design engineer Pressure Drop Ft Water 100 Ft of Riser gt and installing contractor 1 0 RISER CONNECTIONS Install cabinet with risers as follows Water Flow Rate GPM 1 Move cabinet into position CAUTION Keep risers off the floor while moving the cabinet Failure to heed this warning could result in equipment damage 2 Be sure that all the copper fittings are clean and free of dirt Raise the cabinet upright
45. o not allow paint or wall texture over spray to contact coil fan or other unit components Warranties are void if paint or other foreign debris is allowed to contaminate internal unit components Step 5 Install Cabinet and Riser SYSTEM PIPING ARRANGEMENTS Figure 7 shows some of the common piping layouts for water source heat pumps 2 pipe systems are depicted but the same methods can be applied to 4 pipe systems The direct return system shows the most common piping ar rangement This is the most cost effective method of piping to install since the water is supplied and returned to a riser column at the same place at the bottom or top of the building Howev er this type of system requires more effort to individually bal ance water flow to the units The risers are normally capped at the ends opposite the main supply and return piping and may require a field installed flush and vent loop The first reverse return system shows a system which is commonly used to minimize individual unit water flow balanc ing and is often referred to as self balancing This riser ar rangement has a natural affinity to balance the flow to each unit in the riser column However individual unit balancing may still be required This piping system is used on 2 pipe systems only and has an individual return for each riser column The second reverse return system shows a system with a common reverse return riser installed separately from the ind
46. omplaints 7 Slide the chassis part way into the cabinet Match the WATER IN hose to the WATER IN tube on the chassis and the WATER OUT hose to the WATER OUT tube Tighten the swivel connection keeping the copper tube parallel to the sides of the chassis and then tighten the hose to the copper making sure the hose hangs straight without twisting or turning NOTE The copper union and the hose union is to be hand tight plus an additional 1 4 of a turn always use back up wrench on the fittings being tightened Step 10 Install Chassis into the Cabinet 1 Open the unit water valves and check piping for leaks 2 Complete electrical connections between cabinet and chassis by mating the quick connect plugs on the chassis cable to the plugs located in the bottom surface of the blower deck directly under the control box 16 3 Before installing the return panel perform the following checks a Ensure that fan wheel rotates freely and does not rub against housing If rough handling during ship ping has caused fan wheel to shift adjust as neces sary b Verify that water piping connections to the chassis are complete and that unit service valves which were closed during flushing have been opened c Verify that power between the cabinet and chassis is properly connected d After the system has been filled and system pump is started all connections should be re checked for water leaks Carrier WILL NOT be responsible o
47. on site will often offset the extra costs associated with the larger risers RISER EXPANSION Generally in medium to high rise buildings allowances must be made for pipe expansion In ap plications supplemented with factory or field supplied be tween the floor riser extensions assemble and install exten sions before installing cabinet NOTE Riser assemblies are designed to accommodate a maximum of 1 g in expansion and contraction up to a total movement of 21 4 inches If the total calculated rise expansion exceeds 21 4 in expansion devices must be used field provided DIMENSIONS in Pays 1 EXISTING WALL p 4 8 MIN 50VS UNIT SIZE 50VSA VSH 50VSI VSN 647 16 iy RISERS 4 RETURN Wd 5 MSN RETURN PANEL DRYWALL TOP VIEW DRYWALL EXISTING WA j 11 16 in MIN FRAME FASTENERS BY OTHERS RETURN PANEL STUD UNIT CABINET GASKET DETAIL A Fig 6 Framing Rough In Detail DIRECT RETURN REVERSE RETURN REVERSE RETURN WITH A COMMON REVERSE Flush Vent Loop Capped Risers RETURN RISER Roof or hr M Rook 3rd Floor 3rd Floor 2nd Floor 2nd Floor 1st Floor 1st Floor 5 5 Mains Basement Basement Fig 7 System Piping Arrangements All riser modificatio
48. ontact a trained service technician to ensure proper diag nosis and repair of the equipment 7 When testing is complete set system to maintain desired comfort level NOTE If performance during any mode appears abnormal refer to the troubleshooting section of this manual To obtain maximum performance the air coil should be cleaned before start up Use a coil cleaner for use on indoor evaporator refrig eration equipment Table 12 Temperature Change Through Heat Exchanger RISE IN DROP IN COOLING F HEATING F WATER FLOW GPM For Closed Loop Ground Source or Closed Loop 4 8 Systems at 3 gpm per ton For Open Loop Ground Water 10 17 Systems at 1 5 gpm per ton Operating Limits ENVIRONMENT Units are designed for indoor installa tion only Never install units in areas subject to freezing or where humidity levels could cause cabinet condensation such as unconditioned spaces subject to 100 outside air POWER SUPPLY voltage variation of 10 of name plate utilization voltage is acceptable STARTING CONDITIONS Starting conditions vary de pending upon model number and are based upon the following e Conditions in Table 9 are not normal or continuous operat ing conditions Mintmum maximum limits are start up con ditions to bring the building space up to occupancy temperatures Units are not designed to operate under these conditions on a regular basis e Voltage utilization range complies with
49. or and or blower section 7 Remove any access panel screws that may be difficult to remove once unit is installed Step 3 Locate Unit The following guidelines should be considered when choosing a location for a WSHP Units are for indoor use only e Locate in areas where ambient temperatures are between 39 F and 102 F and relative humidity is no greater than 755 e Provide sufficient space for water electrical and duct connections e Locate unit in an area that allows easy access and removal of filter and access panels e Allow enough space for service personnel to perform maintenance Return air must be able to freely enter the space if unit needs to be installed in a confined area such as a closet Step 4 Install Drywall All rough in instructions and drawings are designed for a single layer of gt g in thick dry wall Refer to Fig 6 Rough in dimensions will be affected if drywall thickness is different than 5 5 in the return panel will not fit snugly to the wall and form a tight seal Install drywall using conventional construction methods Drywall cannot be fastened to the studs with adhesive alone a mechanical fasten er such as drywall screws must be used Vacuum all drywall dust and construction debris from coils drain pans and blower discharge plenum after cutting out sup ply and return holes for grilles When installation is complete cover cabinet supply and return air openings D
50. pH Check and adjust water pH if necessary to maintain a level between 6 and 8 5 Proper pH promotes longevity of hoses and fittings 3 System flushing Verify that all hoses are connected end to end when flushing to ensure that debris bypasses the unit heat exchanger water valves and other components Water used in the system must be potable quality initially and clean of dirt piping slag and strong chemical clean ing agents Verify that all air is purged from the system Air in the system can cause poor operation or system corrosion 4 Cooling tower boiler Check equipment for proper set points and operation 5 Standby pumps Verify that the standby pump is properly installed and in operating condition 6 System controls Verify that system controls function and operate in the proper sequence 7 Low water temperature cutout Verify that low water temperature cutout controls are provided for the outdoor portion of the loop Otherwise operating problems may occur 8 System control center Verify that the control center and alarm panel have appropriate set points and are operating as designed FIELD SELECTABLE INPUTS Jumpers and DIP switches on the control board are used to customize unit operation and can be configured in the field See Tables 10 and 11 for heat pump and BacNet control board DIP switch settings 18 IMPORTANT Jumpers and DIP switches should only be clipped when power to control board has been turned
51. per 150 gallons of water Reset the boiler to raise the loop temperature to about 100 F 6 Circulate the solution for between 8 and 24 hours At the end of this period shut off the circulating pump and drain the solution Repeat system cleaning if needed 7 Open the supply and return riser service valves at each unit Refill the system and bleed off all air 8 Test the system pH with litmus paper The system water should have a pH of 6 to 8 5 Add chemicals as appropri ate to maintain pH levels 9 When the cleaning process is complete remove the short circuited hoses Reconnect the hoses to the proper supply and return the connections to each of the units Refill the system and bleed off all air NOTE DO NOT use Stop Leak or similar chemical agent in this system Addition of chemicals of this type to the loop water will foul the heat exchanger and inhibit unit operation Step 9 Install Hose Kit 1 Refer to Fig 11 for an illustration of a typical supply return hose kit assembly 2 Pipe joint compound or Teflon tape is not necessary when using factory supplied hose kits NOTE When anti freeze is used ensure that it is compat ible with Teflon tape and pipe joint compound that may have been applied to other pipe fittings in the system 3 Attach the flex hoses Unpack and examine hose kit Re move all shipping and or packing material such as rubber bands plastic caps and styrofoam Hose kit should con
52. position if pure water is used as the source brine This is nor mally the case in open loop systems Set the DIP switch to the Off position for closed loop systems that contain a brine con centration that allows liquid temperatures to fall to or below 15 DIP SWITCH 3 Tstat at Comm off tstat at 24 vac On Thermostat Selection DIP switch 3 is used to select the type of thermostat that will be used to control the unit A digi tal communicating thermostat can be purchased with the unit that will allow all fault signals to be displayed on the thermostat This allows for efficient troubleshooting and does not require that the technician access the electrical control box to determine the unit error If a digital communicating thermo stat is used DIP switch 3 must be set in the position 1 8 24 vac thermostat is used set DIP switch 3 into the On position DIP SWITCH 4 RV at Cooling Off RV at Cooling On Reversing Valve Operation DIP switch 4 is used to deter mine the reversing valve RV position in the Cooling mode deenergized energized This function is used only when a 24 vac thermostat is used and is determined by the reversing valve output of the thermostat in the Cooling mode If the thermostat deenergizes the reversing valve in the Cooling mode then set the DIP switch in the position If the thermostat ener gizes the reversing valve in the Cooling mode set the DIP switch
53. r liable for damage caused by any water leaks from a field installed water connection s 4 Re attach the upper electrical access panel Do not start the unit with access panel removed system lockout and possible equipment damage can occur Step 11 Install Return Panel 1 Install the provided adhesive backed gasket material on the outer perimeter of the cabinet to seal the return panel to the cabinet Install the cabinet return panel Refer to Fig 4 and 5 Step 12 Install Supply Grille Refer to Fig 2 3 and 12 to determine grille size and location based on the type and size of the unit cabinet chassis combina tion Perform the following to install supply grilles over the cabinet discharge openings PRE START UP Check the following before system start up 1 Balancing shutoff valves Ensure that all isolation valves are open and water control valves are wired 1 To prevent supply air from short circuiting back into the return air panel a supply duct extension s is provided with each cabinet 2 Insert the grille into the cabinet supply duct extension s Assure that the grille flange rests against the drywall cov ering the cabinet 3 Secure the grille to the drywall with the screws provided NO SUPPLY OPENINGS re SUPPLY RETURN DRAIN RISERS LEFT RIGHT CABINET FRONT Supply Grille Sizes and Arrangements 2 Line voltage and wirin
54. rol voltage is less than 18 vac or greater than 30 vac the unit will shut down all inputs immediately Once the voltage has reached acceptable levels the unit microprocessor will power on automatically and resume previous operation LEAVING WATER TEMPERATURE SENSOR FAIL URE LWT If the leaving water temperature thermistor fails it will not affect the operation of the unit This sensor is for monitoring purposes only DISCHARGE AIR TEMPERATURE SENSOR FAILURE DAT If the discharge temperature thermistor fails it will not affect the operation of the unit This sensor is for monitor ing purposes only FREEZE PROTECTION 1 TEMPERATURE SENSOR FAILURE FP1 If the freeze protection 1 thermistor fails for 30 continuous seconds an lockout will occur The compressor will then be deenergized and the blower will deen ergize 15 seconds after the compressor is deenergized The sen sor must be replaced if this lockout occurs FREEZE PROTECTION 2 TEMPERATURE SENSOR FAILURE FP2 If the freeze protection 2 thermistor fails for 30 continuous seconds an FP2 lockout will occur The compressor will then be deenergized and the blower will deen ergize 15 seconds after the compressor is deenergized The sen sor must be replaced if this lockout occurs If unit performance during any mode appears abnormal re fer to Table 13 Table 13 Troubleshooting SYSTEM LOCKOUT STEADY FAULT DESCRIPTION ERROR CODE SYSTEM WARNING F
55. should be performed by trained service per sonnel When working on air conditioning equipment observe precautions in the literature tags and labels attached to the unit and other safety precautions that may apply Improper installation adjustment alteration service main tenance or use can cause explosion fire electrical shock or other conditions which may cause personal injury or property damage Consult a qualified installer service agency or a local distributor or branch for information or assistance The qualified installer or agency must use factory authorized kits or accessories when modifying this product Refer to the individ ual instructions packaged with the kits or accessories when installing Follow all safety codes Wear safety glasses and work gloves Use quenching cloth for brazing operations Have fire extinguisher available Read these instructions thoroughly and follow all warnings or cautions attached to the unit Consult local building codes and the National Electrical Code NEC for special installation requirements Understand the signal words DANGER WARNING and CAUTION DANGER identifies the most serious hazards which will result in severe personal injury or death WARNING signifies hazards that could result in personal inju ry or death CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage Recognize safety information This is the saf
56. t 6 8 5 pH Monitor treat as needed iis ol i oe Ammonia lon as Hydrox ide Chloride Nitrate and Sulfate Compounds Copper CuproNickel 304 SS 316 55 Titanium Maximum Chloride Levels Erosion and Clogging lt 10 ppm of particles and a maximum velocity of 6 fps Filtered for maxi mum 800 micron size Particulate Size and Erosion Brackish LEGEND HWG Hot Water Generator HX Heat Exchanger Design Limits Not Applicable Considering Recirculating Potable Water NR Application Not Recommended SS Stainless Steel Heat exchanger materials considered are copper cupronickel 304 SS stainless steel 316 SS titanium tClosed recirculating system is identified by a closed pressurized piping system Recirculating open wells should observe the open recirculating design considerations 12 6 0 7 5 If gt 7 5 minimize steel pipe use gt 0 5 0 5 If lt 0 5 minimize steel pipe use Based upon 150 F HWG and direct well 85 F indirect well HX lt 0 2 ppm Ferrous If Fe2 ferrous gt 0 2 ppm with pH 6 8 Oo lt 5 ppm check for iron bacteria lt 0 5 ppm of Oxygen Above this level deposition will occur 6 8 5 Minimize steel pipe below 7 and no open tanks with pH lt 8 lt 0 5 ppm At 25 gt 0 2 ppm avoid use of copper and cupronickel piping or HXs Rotten egg smell appears at 0 5 ppm level Copper alloy bronze or brass cast components are
57. ted and will be the same color as the return grille Installation of grille on adjacent unit sides may require a duct extension to prevent air bypass around discharge grilles Mounting hardware included A wh Fig 3 Double Deflection with Opposed Damper Aluminum Discharge Grille STANDARD PERIMETER BYPASS OPTIONAL PERIMETER OPTIONAL LOUVERED ALLEN LOCK REMOVABLE BYPASS ALLEN LOCK OR ALLEN LOCK REMOVABLE KEY LOCK HINGED 26 28 2 95 21 13 63 15 58 00 55 35 30 38 24 ROUGH IN OPENING PLUS 1 4 STANDARD PERIMETER BYPASS OPTIONAL PERIMETER OPTIONAL LOUVERED ALLEN LOCK REMOVABLE BYPASS ALLEN LOCK OR ALLEN LOCK REMOVABLE KEY LOCK HINGED NOTE All dimensions are in inches Fig 4 Return Panel and Frame Dimensions 50VSA VSH Units STANDARD PERIMETER BYPASS OPTIONAL PERIMETER OPTIONAL LOUVERED ALLEN LOCK REMOVABLE BYPASS ALLEN LOCK OR ALLEN LOCK REMOVABLE KEY LOCK HINGED 3228 2713 H 2 95 30 19 63 90 A _ 2 38 24 38 _ ROUGH IN OPENING PLUS 1 4 STANDARD PERIMETER BYPASS OPTIONAL PERIMETER OPTIONAL LOUVERED ALLEN LOCK REMOVABLE BYPASS ALLEN LOCK OR ALLEN LOCK REMOVABLE KEY LOCK HINGED Fig 5 Return Panel and Fr
58. ving the air vents open Bleed all air from the system but do not allow the system to overflow Check the system for leaks and make any re quired repairs 4 Adjust the water and air level in the expansion tank 5 With strainers in place start the pumps Systematically check each vent to ensure that all of the air is bled from the system 6 Verify that make up water is available and adjusted to properly replace any space remaining when all air is purged Check the system for leaks and make any addi tional repairs if needed 7 Set the boiler to raise the loop temperature to approxi mately 85 Open the drain at the lowest point in the system Verify that make up water replacement rate 15 equals rate of bleed Continue to bleed the system until the water appears clean or for at least three hours which ever is longer 8 Completely drain the system Flush risers as follows 1 Close shut off valves at each unit on the riser except the shut off valve on the top floor 2 Flush solution through supply riser NOTE The solution passes through the top floor connec tion down the return riser 3 When the building has more than 10 floors connect the supply and return run outs on the top two floors to divide the water flow and reduce pressure drop at the pump 4 Repeat flushing procedure for each set of risers in the building 5 Refill the system and add in a proportion of trisodium phosphate approximately one pound
59. y water coil maintenance is not needed for closed loop systems However if the piping is known to have high dirt or debris content it is best to establish a periodic maintenance schedule with the owner so the water coil can be checked regularly Dirty installations are typically the result of deterioration of iron or galvanized piping or components in the system Open cooling towers requiring heavy chemical treat ment and mineral build up through water use can also contrib ute to higher maintenance Should periodic coil cleaning be necessary use standard coil cleaning procedures which are compatible with both the heat exchanger material and copper water lines Generally the more water flowing through the unit the less chance for scaling However flow rates over 3 gpm per ton can produce water or debris velocities that can erode the heat exchanger wall and ultimately produce leaks OPEN LOOP SYSTEM Direct Ground Water If the system is installed in an area with a known high mineral con tent 125 ppm or greater in the water it is best to establish a periodic maintenance schedule with the owner so the coil can be checked regularly Should periodic coil cleaning be neces sary use standard coil cleaning procedures which are compati ble with the heat exchanger material and copper water lines Generally the more water flowing through the unit the less chance for scaling Therefore 1 5 gpm per ton is recommended as a minimum flow M

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