Carrier AQUAZONE 50KQE 007 Installation, Operation And Maintenance Instructions Download

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Carrier is participating in
the Eurovent Certification
Programme. Products are
as listed in the Eurovent
Directory of Certified
Products.

50KQE 007-019

Water-Source Heat Pumps -
Console Units

Installation, Operation and Maintenance Instructions

Summary of Contents for AQUAZONE 50KQE 007

Page 1: ...ating in the Eurovent Certification Programme Products are as listed in the Eurovent Directory of Certified Products 50KQE 007 019 Water Source Heat Pumps Console Units Installation OperationandMaintenanceInstructions TM ...

Page 2: ...START UP 22 6 1 Unit start up cooling 22 6 2 Operating limits 22 6 3 Unit start up heating 22 6 4 Flow regulation 22 6 5 Anti freeze 23 6 6 Cooling tower boiler systems 23 6 7 Ground coupled closed loop and plateframe heat exchanger well systems 23 7 OPERATION 24 7 1 Power up mode 24 7 2 Units with Aquazone Complete C control 24 7 3 Units with Aquazone Deluxe D control 24 8 SYSTEM TEST 25 8 1 Test...

Page 3: ...s 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 responsibility of the installing contractor to determine and comply with ALL applicable codes and regulations 3 INSTALLATION 3 1 Check jobsite Units are typically installed along an outside wall of the room Refer to Figs 1A and 1B fo...

Page 4: ...nsate 5 8 15 9 mm ID Vinyl Hose Optional Disconnect Box mounted to cabinet not chassis Optional Motorized Water Valve Optional Autoflow Valve Water Connections 5 8 15 9 mm OD Copper 1 2 FPT or 1 2 MPT 90 30 Power Supply Blower Deck Blower Access Panel 89 49 114 19 99 293 82 49 423 179 30 22 76 136 Condensate 5 8 15 9 mm ID Vinyl Hose Optional Disconnect Box mounted to cabinet not chassis Optional ...

Page 5: ...er located inside and at top of air inlet area Push tabs back and down to release filter for replacement Discharge air Side view Air inlet Bottom view Right handpipe and electric area Rear access Rear view Dimension shown is with 76 mm subbase Add 51 mm to dimension shown for 127 mm subbase Notes 1 All dimensions are in millimetres 2 Optional autoflow valve motorised water valve and disconnect box...

Page 6: ...r located inside and at top of air inlet area Push tabs back and down to release filter for replacement Discharge air Side view Air inlet Bottom view Left handpipe and electric area Rear access Rear view Damperopening Dimension shown is with 76 mm subbase Add 51 mm to dimension shown for 127 mm subbase Notes 1 All dimensions are in millimetres 2 Optional autoflow valve motorised water valve and di...

Page 7: ... Control access door Front view Filter located behind return air grille and requires removal of cabinet front for access Discharge air Side view Air inlet Bottom view Right handpipe and electric area Rear access Notes 1 All dimensions are in millimetres 2 Optional autoflow valve motorised water valve and disconnect box are shown Rear view ...

Page 8: ... Control access door Front view Filter located behind return air grille and requires removal of cabinet front for access Side view Air inlet Bottom view Left handpipe and electric area Rear access Notes 1 All dimensions are in millimetres 2 Optional autoflow valve motorised water valve and disconnect box are shown Rear view Discharge air ...

Page 9: ...hassis Blower access panel Right handconfiguration Left handconfiguration Power supply Control box Water in Water out Compressor access panel Condensate 5 8 ID vinyl hose Optional autoflow valve Water connections 5 8 OD copper 1 2 FPT or 1 2 MPT Blower deck Optional disconnect box mounted to cabinet not chassis Blower access panel Optional motorised water valve For installed dimension add to dimen...

Page 10: ...he backplate Protect the cabinet from damage during installation by returning it to its original vinyl pack until required 2 Remove compressor isolation plate shipping screws 4 as shown in Fig 7 3 Using a carpenter s square and a level ensure the unit is level Shim the unit if necessary to assure proper installation Poor or inadequate installation may result in noisy unit operation or unattractive...

Page 11: ...nsider special wiring conditions The valve takes approximately 60 seconds to open very little water will flow before 45 seconds and it activates the compressor only after the valve is completely opened by closing its end switch When wired as shown the valve will have the following operating characteristics 1 Remain open during a lockout 2 Draw approximately 25 to 35 VA through the Y signal of the ...

Page 12: ...own 6 24 V alarm signal shown For dry alarm contact cut JW1 jumper and dry contact will be available between AL1 and AL2 7 Transformer secondary ground via Complete C board stand offs and screws to control box Ground available from top two stand offs as shown Power Supply Refer to Data Plate Use copper conductors only See Note 2 GROUND GND LUG G Y G Y BLK BLK RED RED RED BLK BR1 E GND GROUND NEUTR...

Page 13: ...Push button switch PM PerformanceMonitor RVS Reversing valve solenoid TRANS Transformer optional wiring UMT Unit mounted thermostat WV Water valve Field line voltage wiring Field low voltage wiring Printed circuit trace Option low voltage wiring Relay contactorcoil Solenoid coil Thermistor Circuitbreaker Relay contacts NO Temperatureswitch High pressure switch Low pressure switch Ground Wire nut M...

Page 14: ... Field low voltage wiring Printed circuit trace Option low voltage wiring Relay contactorcoil Solenoid coil Thermistor Circuitbreaker Relay contacts NO Temperatureswitch High pressure switch Low pressure switch Ground Wire nut Mate N Lock Optional wiring Notes 1 Compressor and blower motor thermally protected internally 2 All wiring to the unit must comply with local codes 3 Transformer is wired t...

Page 15: ...OTE 4 CO RVS R C SEE NOTE 7 P1 COM2 COM1 RED POWER SUPPLY REFER TO DATA PLATE USE COPPER CONDUCTORS ONLY SEE NOTE 2 PB E GND NEUTRAL 220 240 1 50 G Y G Y RED BLK CB BLK RED 220V ORG 240V 24V YEL BLU GROUND BLK RED BLK GROUND TO CONTROL DOOR G Y G Y GND LUG GROUND 1 2 BRN YEL F C CAP BLU RED COMPR S C R B HIGH A LOW TRANS RED BR 2 HI COM NO BR 1 LO COM NO BM L JW1 LP TEST PINS JW2 FP2 JW3 FP1 LOW L...

Page 16: ...mplete C controller wiring COMPLETE C CONTROL BR CR CAP PB GROUND TRANSFORMER BRN YEL Y W O G R C AL1 AL2 A P1 ALARM RELAY SEE NOTE 6 JW1 WV COMPRESSOR COOLING FAN 24 VAC COMMON ALARM CLASS 1 WIRING REQUIRED INSIDE CONTROL BOX Y O G R C L CLASS 1 OR 2 WIRING ACCEPTABLE OUTSIDE CONTROL BOX TYPICAL HEAT PUMP T STAT SEE NOTE 5 BRN YEL BLU R Y JW3 FP1 JW2 FP2 SEE NOTE 4 COMPR RELAY STATUS LED G COMPLE...

Page 17: ...FAULT R RV RELAY TEST PINS JW3 FP1 LOW JW2 FP2 LOW SEE NOTE 4 JW1 LP N O YEL YEL BRN BRN BR 2 HI BR 1 LO COM NO NO NC COM FAN SPEED RELAY FAN ENABLE RELAY RED GRY Y1 Y1 W1 O W2 G R C AL1 COMPRESSOR COOLING FAN 24 VAC COMMON ALARM CLASS 1 WIRING REQUIRED INSIDE CONTROL BOX Y O G R C X1 CLASS 1 OR 2 WIRING ACCEPTABLE OUTSIDE CONTROL BOX TYPICAL HEAT PUMP T STAT SEE NOTE 5 BRN SEE NOTE 7 AL2 R NSB C ...

Page 18: ...e used unions are not necessary 3 Install strainers at the inlet of each system circulating pump NOTE Since loop temperatures are normally between 15 and 32 C pipe sweating and heat loss do not occur at normal ambient temperature conditions Insulation must be installed on loop water piping on those sections that run through unheated areas or are located outside the building If loop temperatures ar...

Page 19: ...ill foul the system and will inhibit unit operation 11 When the system is successfully cleaned flushed refilled and bled check the main system panels safety cutouts and alarms Set the controls to properly maintain loop tempera tures 4 2 System checkout When the installation is complete and the system is cleaned and flushed follow the System Checkout procedure outlined below 1 Voltage Ensure voltag...

Page 20: ... impedes unit operation and causes corrosion in the system piping 10 Unit filters To avoid system damage and to provide maxi mum performance ensure the unit filter is clean 11 Unit fans Manually rotate fans to assure free rotation Ensure fans are properly secured to the fan shaft Do not oil fan motors on start up since they are lubricated at the factory 12 System control centre To ensure control o...

Page 21: ...heating as long as the FP1 is above 10 C The compressor will not be used for heating when the FP1 is below 10 C and the compressor will operates in emergency heat mode staging on EH1 and EH2 to provide heat If a thermal switch is being used instead of the FP1 thermistor only the compressor will be used for heating mode when the FP1 terminals are closed If the FP1 terminals are open the compressor ...

Page 22: ...ater at nominal flow rates NOTE These operating limits are not normal or continuous operating conditions It is assumed that such a start up is for the purpose of bringing the building space up to occupancy temperature 6 3 Unit start up heating 1 Adjust the unit thermostat to the warmest setting and turn the fan speed switch to HI If the unit has an optional MCO thermostat set the selector switch t...

Page 23: ... faults 6 6 Cooling tower boiler systems These systems typically use a common loop maintained at 15 6 to 32 2 C Carrier recommends using a closed circuit evaporative cooling tower with a secondary heat exchanger between the tower and the water loop If an open type cooling tower is used continuously chemical treatment and filtering will be necessary Table 9 Approximate fluid volume l per 30 m of pi...

Page 24: ... heating stage 2 mode the fan enable and compressor relays are remain on The fan speed relay is turned on immediately and turned off immediately once the demand is removed The control reverts to heating stage 1 mode If there is a master slave or dual compressor application all compressor relays and related func tions will operate per their associated DIP switch 2 setting on S1 7 3 4 Heating stage ...

Page 25: ... a 10 second pause This sequence will repeat continually until the fault is cleared Table 12 Complete C control LED code and fault descriptions LED code Fault Description 1 No fault in memory There has been no fault since the last power down to power up sequence 2 High pressure switch HP open instantly 3 Low pressure switch LP open for 30 continuous seconds before or during a call bypassed for fir...

Page 26: ...nt injury or death due to electrical shock or contact with moving parts open unit disconnect switch before servicing unit 9 1 Unit inspection Visually inspect the unit at least once a month Pay special atten tion to hose assemblies Repair any leaks and replace deteriorated hoses immediately Note any signs of deterioration or cracking 9 2 System flushing Properly clean and flush system periodically...

Page 27: ...18 9 6 2 Forced circulation method Fully open vent pipe when filling condenser The vent may be closed when condenser is full and pump is operating see Fig 19 Regulate flow to condenser with a supply line valve If pump is a non overloading type the valve may be fully closed while pump is running For average scale deposit allow solution to remain in condenser overnight For heavy scale deposit allow ...

Page 28: ...e water flow and internal malfunctions If the unit continues to cut out contact a trained service technician WARNING When replacing the compressor contactor or lockout relay in a unit with electromechanical controls use only Carrier factory authorized parts Substitution of other components may result in an inoperative safety circuit and may cause a hazardous condition 9 11 Checking system charge U...

Page 29: ...operation and airflow restrictions External static too high X Air temperature out of range Too much cold vent air Bring entering air temperature within design parameters X Improper freeze protect setting Normal airside applications will require 1 1 C only 1 1 C vs 12 2 C X X Bad thermistor Check temperature and impedance correlation Condensate fault code 6 X X Blocked drain Check for blockage and ...

Page 30: ...ds and sizing check sensible cooling load and heat pump capacity X X Scaling in water heat exchanger Perform scaling check and clean if necessary X X Inlet water too hot or cold Check load loop sizing loop backfill ground moisture High head pressure X Reduced or no airflow in heating Check for dirty air filter and clean or replace Check fan motor operation and airflow restrictions External static ...

Page 31: ...R COIL C kPa WATER OUT WATER IN C kPa LOOK UP PRESSURE DROP IN TABLE 10 TO DETERMINE FLOW RATE C LIQUID LINE kPa C DEW POINT Air coil Expansion valve Liquid line Water in Water out Heat exchanger Look up pressure drop in Table 8 to determine flow rate Dew point Suction Compressor Discharge SUCTION COMPRESSOR DISCHARGE COAX EXPANSION VALVE C C AIR COIL C kPa WATER OUT WATER IN C kPa LOOK UP PRESSUR...

Page 32: ... phase scroll compressor is present verify proper rotation per instructions Y N __________ 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 CAAmps ________ if 3 phase if 3 phase Control voltage Is the control voltage above 21 6 Volts Y N __________ If not check for proper...

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