Carrier 50KQA Product Data
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Carrier 50KQA Product Data

Carrier 50KQA Product Data

Console water source heat pumps
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Copyright 2003 Carrier Corporation
Product
Console Water Source Heat Pumps
Data
50KQA, KQD
1
/
to 1
1
/
2
2
TM
Single-Package Console Water
Source Heat Pump with self-
contained line voltage thermostats.
• Wide application use with operating
temperature range from 40 F to
100 F
• Thermostatic expansion valve
(TXV) provides efficient and reliable
refrigerant flow
• Spring mounted compressors for
quiet operation
• Sloped top cabinet with powder
paint finish
• Right or left hand piping connection
• Multiple unit-mounted and remote
thermostat options
• Adaptable cabinet and subbase
configurations
• Factory-mounted flow regulators and
control valves for easy installation
• Flexible and reliable controls
accommodate all systems
Features/Benefits
Carrier's Aquazone™
console water source heat
pumps are a flexible,
attractive alternative for all
finished interior space, under
window style installations.
Operating efficiency
Carrier Aquazone water source heat
pumps (WSHP) are designed for quali-
ty and performance excellence over
their lifetime. Models offer cooling
EERs (Energy Efficiency Ratio) to
12.8, and heating COPs (Coefficient
of Performance) to 4.6, which are
among the highest in the industry.
Quiet operation
The Carrier Console WSHP provides
exceptionally quiet operation for maxi-
mum comfort.
Nominal Tons
Form 50KQ-6PD

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Summary of Contents for Carrier 50KQA

  • Page 1 Operating efficiency Carrier Aquazone water source heat pumps (WSHP) are designed for quali- ty and performance excellence over their lifetime. Models offer cooling EERs (Energy Efficiency Ratio) to 12.8, and heating COPs (Coefficient...

  • Page 2: Table Of Contents

    (DDC) applications include the exchanger has copper inner and steel the field-installed condensate line. Carrier Comfort Network (CCN) and outer tubing which is painted on the Compact cabinet design dimen- open protocol systems.

  • Page 3: Features/Benefits

    Features/Benefits (cont) Anti-short cycle timer — Provides a Water coil freeze protection exclusively by Carrier, the controller minimum off time to prevent the unit (selectable for water or anti- can be used to actively monitor and from short cycling. The 5-minute timer freeze) —...

  • Page 4: Model Number Nomenclature

    Model number nomenclature Cabinet & Subbase Options 50 – Carrier Prefix Option Cabinet Subbase Series Bottom Return 3″ Subbase KQA – Standard Temperature Range (60 to 95 F) Bottom Return 3″ Subbase w/Motorized Damper KQD – Low Temperature Range (40 to 110 F) Bottom Return 5″...

  • Page 5: Physical Data

    Physical data BASE UNIT 50KQA, KQD NOMINAL CAPACITY (tons) BLOWER Motor Horsepower Wheel Size D x W (in.) 2 each 8 x 29 8 x 29 8 x 29 8 x 29 8 x 29 FILTER SIZE (in.) Bottom Return...

  • Page 6: Options And Accessories

    (NSB) mode. potential. Night setback from low temperature thermostat PremierLink™ controller is compatible with the Carrier with 2-hour override is initiated by a momentary signal Comfort Network (CCN) and other building automation from the thermostat.
  • Page 7 Programmable 7-day thermostat — Offers 2-stage heat, stop, lead/lag, or variable frequency pump operation. 2-stage cool, auto changeover, 7-day programmable with • Direct Digital Control compatible using the Carrier copy command, 4 settings per day, fully electronic, 24 vac, Comfort Network (CCN) and WSHP units utilizing backlit LCD, keypad lockout, no batteries required, PremierLink CCN controllers.
  • Page 8 Options and accessories (cont) CARRIER AQUAZONE™ THERMOSTATS (FOR USE WITH REMOTE THERMOSTAT UNITS) Carrier ® COOL AUTO HEAT 7-DAY PROGRAMMABLE/LIGHT-ACTIVATED 7-DAY PROGRAMMABLE FLUSH MOUNT PROGRAMMABLE COOL AUTO HEAT 5-DAY PROGRAMMABLE/NON-PROGRAMMABLE PREMIERLINK™ COMMUNICATING CONTROL...

  • Page 9: Base Unit Dimensions

    Base unit dimensions 50KQA,KQD BOTTOM RETURN CABINET DIMENSIONS — RIGHT HAND PIPING Discharge (38) (406) (127) 30° Control Access Door (610) AIR INLET AREA Inlet (241) (1219) (76) FRONT VIEW (254) (1219) R.H. Pipe & Electric Area (241) (203) 0.75...
  • Page 10 Base unit dimensions (cont) 50KQA,KQD BOTTOM RETURN CABINET DIMENSIONS — LEFT HAND PIPING 12.5 Discharge (38) (318) (38) 30° Control Access Door (610) AIR INLET AREA Inlet (241) (1219) (76) FRONT VIEW (254) (1219) L.H. Pipe & Electric Area (241) (203) 0.75...
  • Page 11 50KQA,KQD FRONT RETURN CABINET DIMENSIONS — RIGHT HAND PIPING (38) (127) Discharge (406) 30° Control Access Door Filter (533) Inlet (254) (1219) FRONT VIEW No damper available with front return option. (38) 41.75 (1060) R.H. PIPE & ELECTRIC AREA BLOCK OFF PLATE ON...
  • Page 12 Base unit dimensions (cont) 50KQA,KQD FRONT RETURN CABINET DIMENSIONS — LEFT HAND PIPING 12.5 (38) (38) Discharge (318) 30° Control Access Door Filter (533) Inlet (1219) FRONT VIEW (254) No damper available with front return option. 41.75 1.5 (38) (1060) L.H.
  • Page 13 50KQA,KQD CHASSIS DIMENSIONS — 007, 009, 012, 015, 019 POWER SUPPLY IN 3.375 (86) 2.125 (54) (1041) 1(25) WATER 30 ° WATER CONTROL BOX 4(182) BLOWER DECK 6.5 (165) 20.5 (89) (521) (51) 13.5 (406) (343) CONDENSATE RELIEF (32) COMPRESSOR...

  • Page 14: Selection Procedure

    Selection procedure (with 50KQA012 example) I Determine the actual cooling and heating IV Determine the correction factors associated loads at the desired dry bulb and wet bulb with the variable factors of dry bulb and wet conditions. bulb using the Corrections Factor tables found in this book.
  • Page 15 VII ARI/ISO/ASHRAE 13256-1 Conversion c) Perform Fan Power Correction Adjustment Performance standard ARI/ISO/ASHRAE 13256-1 Use the following formula to calculate Fan Power became effective on January 1, 2000 and replaced Correction: the existing ARI Standards 320 Water-Loop Heat Fan Power Pumps (WLHP), 325 Ground-Water Heat Pumps Correction = (Cfm x 0.472) x (External Static (GWHP), and 330 Ground-Loop Heat Pumps...

  • Page 16: Performance Data

    Performance data 50KQA,KQD007 ( TON) — RATED AIRFLOW 280 CFM COOLING — EAT 80 F DB/67 F WB HEATING — EAT 70 F DB PRESSURE DROP (ft wg) With With Without EWT F Sensible/ Motorized Motorized Motorized Total Ratio Cv = 3.5 Cv = 2.5...
  • Page 17 50KQA,KQD009 ( TON) — RATED AIRFLOW 280 CFM COOLING — EAT 80 F DB/67 F WB HEATING — EAT 70 F DB PRESSURE DROP (ft wg) With With Without EWT F Sensible/ Motorized Motorized Motorized Total Ratio Cv = 3.5 Cv = 2.5...
  • Page 18 Performance data (cont) 50KQA,KQD012 (1 TON) — RATED AIRFLOW 375 CFM COOLING — EAT 80 F DB/67 F WB HEATING — EAT 70 F DB PRESSURE DROP (ft wg) With With Without EWT F GPM Sensible/ Motorized Motorized Motorized Total Ratio Cv = 3.5...
  • Page 19 50KQA,KQD015 (1 TON) — RATED AIRFLOW 400 CFM COOLING — EAT 80 F DB/67 F WB HEATING — EAT 70 F DB PRESSURE DROP (ft wg) With With Without EWT F GPM Sensible/ Motorized Motorized Motorized Total Ratio Cv = 3.5 Cv = 2.5...
  • Page 20 Performance data (cont) 50KQA,KQD019 (1 TON) — RATED AIRFLOW 430 CFM COOLING — EAT 80 F DB/67 F WB HEATING — EAT 70 F DB PRESSURE DROP (ft wg) With With Without EWT F Sensible/ Motorized Motorized Motorized Total Ratio Cv = 3.5...
  • Page 21 3. Discontinued Standards ARI 320, 325, and 330 used entering air *Sensible capacity equals total capacity. conditions of Cooling — 80 F DB/67 F WB and Heating — 70 F DB (bold print). 50KQA,KQD CONSOLE BLOWER PERFORMANCE 60 Hz SCFM RATED 50KQA,KQD...

  • Page 22: Application Data

    This system only requires piping to get the water from the source to the unit. Refer to the Carrier Water Source Heat Pump Sys- tem Design Guide for assistance designing water loop NOTE: When utilizing Aquazone water source heat pumps systems.
  • Page 23 Molar zinc acetate solution, allowing accurate sulfide determination up to 24 hours after sampling. A low pH and high alkalinity cause system specified by local codes. The 50KQA, KQD units are problems, even when both values are within ranges shown. The term designated in a blow-thru configuration.
  • Page 24 (Lw) in dB on the equip- rates. 2. Only one maximum or minimum value may be used with 50KQA ment to determine the ductwork, ceiling and room sound units, all other parameters must be at normal conditions. The attenuation effect.

  • Page 25: Electrical Data

    Electrical data 50KQA,KQD COMPRESSOR TOTAL RATED VOLTAGE 50KQA,KQD MOTOR UNIT CIRCUIT FUSE/ VOLTAGE MIN/MAX HACR 115-1-60 104/126 36.2 0.50 208/230-1-60 197/254 17.7 0.33 265-1-60 239/292 14.8 0.35 115-1-60 104/126 44.0 0.50 10.9 208/230-1-60 197/254 20.0 0.33 265-1-60 239/292 18.6 0.35...

  • Page 26: Typical Wiring Schematics

    Typical wiring schematics MANUAL CHANGEOVER WITH COMPLETE C CONTROLLER Ground Ground Power Supply Transformer Compressor Neutral on 265V Systems Refer to Data Plate Use copper conductors only. See Note 2 Refer to Disconnect box for optional power supply connection L2 (ribbed) Optional B (HIGH) Complete...
  • Page 27 MANUAL CHANGEOVER WITH DELUXE D CONTROLLER Ground Power Supply Refer to Data Plate Neutral on 265V Systems Ground Compressor Use copper conductors only. See Note 2 Transformer Refer to Disconnect BLK 2 box for optional power supply connection B (HIGH) Optional Cord Deluxe...
  • Page 28 Typical wiring schematics (cont) AUTOMATIC CHANGEOVER WITH COMPLETE C CONTROLLER Ground Power Supply Ground Refer to Data Plate Compressor Neutral on 265V Systems Transformer Use copper conductors only. See Note 2 Refer to Disconnect box for optional power supply connection L2 (ribbed) Optional B (HIGH)
  • Page 29 AUTOMATIC CHANGEOVER WITH DELUXE D CONTROLLER Ground Power Supply Neutral on 265V Systems Refer to Data Plate Compressor Ground Use copper conductors only. See Note 2 Transformer Refer to Disconnect box for optional power supply connection L2 (ribbed) B (HIGH) Optional Ground Cord...
  • Page 30 Typical wiring schematics (cont) REMOTE-MOUNTED THERMOSTAT WITH COMPLETE C CONTROLLER Ground Power Supply Refer to Data Plate Neutral on 265V Systems Compressor Use copper conductors only. Ground See Note 2 Transformer Refer to Disconnect box for optional BLK 2 power supply connection L2 (ribbed) Optional B (HIGH)
  • Page 31 REMOTE-MOUNTED THERMOSTAT WITH DELUXE D CONTROLLER Ground Power Supply Ground Neutral on 265V Systems Refer to Data Plate Compressor Use copper conductors only. See Note 2 Transformer Refer to Disconnect BLK 2 box for optional power supply connection B (HIGH) Deluxe Optional A (LOW)

  • Page 32: Typical Piping And Wiring

    Typical piping and wiring STANDARD UNIT L E F T H A N D R I G H T H A N D 5.5 (140) 5.5 (140) 3.5 (89) (89) 1 (25) 1 (25) Power Supply In Power Supply In Water Out Water Out Water In...
  • Page 33 WITH MOTORIZED SHUT-OFF VALVE L E F T H A N D R I G H T H A N D 5.5 (140) 5.5 (140) (89) 3.5 (89) 1 (25) 1 (25) Power Supply In Power Supply In Water Out Water Out Water In Water In...
  • Page 34 Typical piping and wiring (cont) WITH OPTIONAL DISCONNECT SWITCH (FUSED OR UNFUSED) AND/OR RECEPTACLE L E F T H A N D R I G H T H A N D 5.5 (140) 5.5 (140) (89) (89) (25) (25) 3.25 4.25 (83) 4.25...

  • Page 35: Guide Specifications

    Units shall be Carrier model 50KQA (standard tem- loss-of-charge sensor to protect against loss of perature range 60 F to 95 F) or model 50KQD (low refrigerant, and low water temperature (freeze- temperature range 40 F to 110 F).
  • Page 36 Unit Performance Monitor to indicate ineffi- signal. cient operating conditions prior to unit 6. Carrier PremierLink™ Controller: lockout. This control will function with CCN and Com- n. Remote fault type indication at thermostat. fortVIEW™ software. It shall also be compatible o.
  • Page 37 b. Units designed for connection to remote wall b. Programmable 7-Day Light-Activated Ther- mounted thermostat shall be wired such that mostat offers occupied comfort settings with the operating controls are at the thermostat. lights on, unoccupied energy savings with The controller shall be provided with a low lights off.
  • Page 40 Carrier Corporation • Syracuse, New York 13221 5-03 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 Book 1 Pg 40 Catalog No. 525-00049 Printed in U.S.A.

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50kqd

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