Carrier AQUAZONE 50KQE Series Installation, Operation And Maintenance Instructions
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Carrier AQUAZONE 50KQE Series Installation, Operation And Maintenance Instructions

Carrier AQUAZONE 50KQE Series Installation, Operation And Maintenance Instructions

Water-source heat pumps-console units
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TM
50KQE 007-019
Water-Source Heat Pumps -
Console Units
Installation, Operation and Maintenance Instructions
Carrier is participating in
the Eurovent Certification
Programme. Products are
as listed in the Eurovent
Directory of Certified
Products.

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Summary of Contents for Carrier AQUAZONE 50KQE Series

  • Page 1 50KQE 007-019 Water-Source Heat Pumps - Console Units Carrier is participating in the Eurovent Certification Programme. Products are as listed in the Eurovent Directory of Certified Products. Installation, Operation and Maintenance Instructions...

  • Page 2: Table Of Contents

    CONTENTS 1 - SAFETY CONSIDERATIONS ..............................3 2 - GENERAL ....................................3 3 - INSTALLATION ..................................3 3.1 - Check jobsite ....................................3 3.2 - Check unit ....................................10 3.3 - Mounting the unit ..................................10 3.4 - Electrical wiring ..................................10 3.5 - Low voltage wiring ..................................

  • Page 3: Safety Considerations

    2 - GENERAL CAUTION: To avoid the release of refrigerant into the atmo- These instructions are for Carrier console water-source heat sphere, the refrigerant circuit of this unit must only be serviced pump systems. by technicians which meet local, regional and national proficiency requirements.
  • Page 4 Table 1 - Physical data 50KQE Nominal cooling capacity* 1.82 2.45 2.99 3.48 3.84 Nominal heating capacity** 2.35 2.74 3.32 4.27 4.61 Compressor Rotary Refrigerant charge (R-407C) 0.340 0.369 0.510 0.567 0.539 No. of circuits Blower Motor power input Wheel size D x W (2 each) 133 x 159 133 x 159 133 x 159...
  • Page 5 Fig. 2 - 50KQE bottom return cabinet dimensions - right-hand piping Discharge 88.9 30º Filter located inside and at Control access door top of air inlet area. Push tabs back and down to release filter for replacement. Side view *607 Front view Air inlet area Air inlet...
  • Page 6 Fig. 3 - 50KQE bottom return cabinet dimensions - left-hand piping Discharge 88.9 30º Control access door Filter located inside and at top of air inlet area. Push tabs back and down to Side view release filter for replacement. Front view *607 Air inlet area Air inlet...
  • Page 7 Fig. 4 - 50KQE front return cabinet dimensions - right-hand piping Discharge 88.9 30º Control access door Front view Side view inlet 1110 1219 Filter located behind return air grille and requires removal of cabinet front for access. 1219 Right-hand pipe and electric area Bottom view Rear view...
  • Page 8 Fig. 5 - 50KQE front return cabinet dimensions - left-hand piping Discharge 88.9 38.1 30º Control access door Front view Side view inlet 1110 1219 Filter located behind return air grille and requires removal of cabinet front for access. 1219 Left-hand pipe and electric area Bottom view...
  • Page 9 Fig. 6 - 50KQE chassis dimensions - all sizes Right-hand configuration 1040 Power supply 30º Water out Control box Water in Blower deck *423 Compressor access panel Blower access panel *179 Condensate 5/8” ID vinyl hose Optional autoflow valve Optional motorised water valve Water connections 5/8”...

  • Page 10: Check Unit

    3.2 - Check unit Remove compressor isolation plate shipping screws (4), as shown in Fig. 7. Upon receipt of shipment at the jobsite, carefully check the ship- Using a carpenter’s square and a level, ensure the unit is ment against the bill of lading. Make sure all units have been level.

  • Page 11: Low Voltage Wiring

    (240-Volt) wire at the PB(1) terminal. Figs. 11-14). Fig. 8 - Typical field-installed wiring When desired, the unit can be furnished with a 24-Volt control circuit which is field-wired to a Carrier-supplied accessory remote thermostat. Most heat pump thermostats can be used Field-supplied FIELD SUPPLIED...
  • Page 12 Fig. 11 - Manual changeover with Complete C controller wiring Push button switch attributes (Ground to control door) (GROUND TO CONTROL DOOR) Gnd lug GND LUG X = closed O = open GROUND Ground N.O. Terminals 1A 1B 2A 3A 4A 5A 6A 7A 8A High N.O.
  • Page 13 Fig. 12 - Manual changeover with Deluxe D controller wiring Gnd lug Blower motor wiring GND LUG Unit size Pole A Pole B (Ground to control door) (GROUND TO CONTROL DOOR) Ground GROUND Power supply High Earth (GRD) B (HIGH) 2 BRN E (GND) COM NO...
  • Page 14 Fig. 13 - Automatic changeover with Complete C controller wiring Push button switch attributes X = closed O = open (Ground to control door) (GROUND TO CONTROL DOOR) GND LUG Gnd lug Terminals GROUND Ground 1A 1B 2A 3A 4A 5A 6A 7A 8A N.O.
  • Page 15 Fig. 14 - Automatic changeover with Deluxe D controller wiring Gnd lug GND LUG (Ground to control door) (GROUND TO CONTROL DOOR) Ground GROUND High Earth (GRD) B (HIGH) 2 BRN E (GND) COM NO Power supply POWER SUPPLY BR 2 (HI) COM NO REFER TO DATA Refer to data plate...
  • Page 16 Fig. 15 - Remote mounted thermostat with Complete C controller wiring GND LUG Ground Gnd lug GROUND (Ground to control door) (GROUND TO CONTROL DOOR) N.O. Earth (GRD) E(GND) Compressor COMPRESSOR Power Supply Power supply Refer to Refer to data plate Data Plate.
  • Page 17 Fig. 16 - Remote mounted thermostat with Deluxe D controller wiring (Ground to control door) (GROUND TO CONTROL DOOR) Ground Gnd lug GROUND High Earth (GRD) COM N.O. BLK B (HIGH) E(GND) Power Supply Power supply BR 2 (HI) COM N.O. Refer to Ground Refer to data plate...

  • Page 18: Supply And Return Piping Installation

    3.6 - Supply and return piping installation Install any other system components, as required, following manufacturer’s instructions. IMPORTANT: Reinstall the front cabinet by carefully lowering the front Right-hand units - entering water is upper pipe. cabinet over the chassis onto the backplate. Left -hand units - entering water is lower pipe.

  • Page 19: Pre-Start-Up

    4 - PRE-START-UP Open a drain at the lowest point in the system. Adjust the make-up water replacement rate to equal the rate of bleed. 4.1 - System cleaning and flushing Continue to bleed the system until the water appears clean or for at least three hours, whichever is longest;...

  • Page 20: Field Selectable Inputs

    5 - FIELD SELECTABLE INPUTS CAUTION: To avoid equipment damage, DO NOT leave system filled in a building without heat during the winter unless anti-freeze is added to system water. Condenser coils Jumpers and DIP (dual in-line package) switches on the control never fully drain by themselves and will freeze unless board are used to customise unit operation and can be configured winterised with anti-freeze.

  • Page 21: Deluxe D Control Dip Switches

    5.4 - Deluxe D control DIP switches DIP switch block 2 (S2) - This set of DIP switches is used to configure accessory relay options: The Deluxe D control has 2 DIP switch blocks. Each DIP Switches 1 to 3: These DIP switches provide selection of acces- switch block has 8 switches and is labelled either S1 or S2 on sory 1 relay options.

  • Page 22: Start-Up

    6 - START-UP 6.3 - Unit start-up/heating Use the procedure outlined below to initiate proper unit start-up. Adjust the unit thermostat to the warmest setting and turn the fan speed switch to “HI.” If the unit has an optional NOTE: This equipment is designed for indoor installation only. MCO thermostat, set the selector switch to heat.

  • Page 23: Anti-Freeze

    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.

  • Page 24: Operation

    7 - OPERATION relays are turned off and the control reverts to standby mode. If there is a master/slave or dual compressor application, all com- 7.1 - Power up mode pressor relays and related functions will operate per their asso- ciated DIP switch 2 setting on S1.

  • Page 25: System Test

    8 - SYSTEM TEST Table 12 - Complete C control LED code and fault descriptions System testing provides the ability to check the control operation. The control enters a 20-minute test mode by momentarily shor- LED code Fault Description ting the test pins. All time delays are reduced by a factor of 15. No fault in memory There has been no fault since the last power-down to power-up sequence...

  • Page 26: Service

    Table 13 - Aquazone D control current LED status and alarm relay operations Description Status LED Test LED Fault LED Alarm relay (Green) (Yellow) (Red) Normal mode Flash last fault code in memory Open Normal mode with PM Flashing code 8 Cycle (closed 5 sec, open 25 sec, ...) D control is non-functional...

  • Page 27: Refrigerant System

    Proper water treatment can minimise tube fouling and pitting. If Suction SUCTION Supply SUPPLY such conditions are anticipated, water treatment analysis is Pump PUMP recommended. Refer to the Carrier System Design Manual, SUPPORT support 25 mm 1” PIPE Part 5, for general water conditioning information. pipe Condenser CONDENSER CAUTION: Follow all safety codes.

  • Page 28: Safety Control Reset

    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 Units are shipped with full operating charge.
  • Page 29 Table 14 - Troubleshooting Fault Heating Cooling Possible cause Solution Main power problems Green status LED Off Check line voltage circuit breaker and disconnect. Check for line voltage between L1 and L2 on the contactor. Check for 24 V a.c. between R and C on controller. Check primary/secondary voltage on transformer.
  • Page 30 Table 14 - Troubleshooting (cont’d) Fault Heating Cooling Possible cause Solution Only compressor runs Thermostat wiring Check G wiring at heat pump. Jumper G and R for fan operation. Fan motor relay Jumper G and R for fan operation. Check for line voltage across BR contacts.
  • Page 31 Heating cycle analysis Dew point POINT °C Suction SUCTION COIL coil °C °C COMPRESSOR Compressor Heat Expansion EXPANSION COAX exchanger DISCHARGE Discharge VALVE valve °C Liquid line LIQUID LINE °C °C Water in Water out WATER IN WATER OUT Look up pressure drop in Table 8 LOOK UP PRESSURE DROP IN TABLE 10 to determine flow rate TO DETERMINE FLOW RATE...

  • Page 32: Start-Up Checklist - 50Kqe R-407C Unit

    ________ °C Air in Air out Order No. 15763-20 05.04; Supersedes order No. New Manufactured by: Carrier Corporation, Syracuse, USA Manufacturer reserves the right to change any product specifications without notice. Printed on Totally Chlorine Free Paper. Printed in the Netherlands.

This manual is also suitable for:

Aquazone 50kqe 007Aquazone 50kqe 019Aquazone 50kqe 015Aquazone 50kqe 009Aquazone 50kqe 012

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