Carrier 50TFQ008-012 Product Data
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Carrier 50TFQ008-012 Product Data

Single-package standard efficiency rooftop heat pump units 50 hz
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Copyright 2000 Carrier Corporation
Product
Data
Rooftop Heat Pump Units
Nominal Capacities: 26.4 to 35.2 kW
50TFQ008-012
50TFQ008-012
Single-Package
Standard Efficiency
(7
1
/
to 10 Nominal Tons)
2
Single-package standard efficiency
rooftop heat pumps with:
• State-of-the-art defrost system
• Dependable 4-way valve operation
• Refrigerant filter strainer and
accumulator
• Field-installed electric heaters
available
• Advanced hermetic compressors
mounted on vibration isolators
• Factory-installed Apollo communi-
cating controls, non-fused discon-
nect switch available

Features/Benefits

The 50TFQ standard
efficiency rooftop product
line combines advanced
technology with
serviceability, performance,
and flexibility .
State-of-the-art defrost system
uses time and temperature to keep the
outdoor coil frost-free for economical,
dependable operation.
Dependable 4-way valve opera-
tion safely and efficiently accomplish-
es cycle reversals, defrost, and normal
operation.
Refrigerant filter strainer and ac-
cumulator ensure performance
dependability and circuit protection.
Field-installed electric heaters
available in a wide range of capaci-
ties. Single-point wiring kit makes
installation simple.
NOTE: Some electric heater applica-
tions not available for use with
factory-installed disconnect switch.
50 Hz
Form 50TFQ-C1PD

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Summary of Contents for Carrier 50TFQ008-012

  • Page 1: Features/Benefits

    Field-installed electric heaters available in a wide range of capaci- ties. Single-point wiring kit makes installation simple. NOTE: Some electric heater applica- tions not available for use with factory-installed disconnect switch. Copyright 2000 Carrier Corporation Form 50TFQ-C1PD...

  • Page 2: Table Of Contents

    The bottom drain can be used in option), designed exclusively by finish is non-chalking type. All internal conjunction with the thru-the-bottom Carrier, actively monitors all modes of cabinet panels are primed, allowing the connections. An external trap must be operation as well as indoor fan status, entire unit to have a longer life and a field supplied.

  • Page 3: Model Number Nomenclature

    Model number nomenclature LEGEND — Aluminum — Copper *Refer to 50TFQ Product Ordering Data or contact your local Carrier rep- resentative for 50TFQ Factory-Installed Option code table. Ratings summary AIRFLOW QUANTITIES NET CAPACITIES (Nominal) UNIT NOMINAL NOMINAL Cooling Heating 50TFQ...

  • Page 4: Physical Data

    Physical data (SI) UNIT SIZE 50TFQ 26.4 29.9 35.2 NOMINAL CAPACITY (kW) OPERATING WEIGHT (kg) Unit Al/Al* Durablade Economizer Roof Curb† COMPRESSOR Hermetic Quantity 1331 ea 1597 ea 1597 ea Oil (ml) REFRIGERANT TYPE R-22 Operating Charge (kg) Circuit 1 2.67 3.40 3.45...

  • Page 5: Physical Data

    Physical data (English) UNIT SIZE 50TFQ NOMINAL CAPACITY (tons) OPERATING WEIGHT (lb) Unit Al/Al* 1015 Durablade Economizer Roof Curb† COMPRESSOR Hermetic Quantity Oil (oz) 45 ea 54 ea 54 ea REFRIGERANT TYPE R-22 Operating Charge (lb-oz) Circuit 1 5-14 7-10 Circuit 2 6- 0 7-10...

  • Page 6: Options And Accessories

    **Accessory single-point kit is required for 008-012 units using electric heat. MOTORMASTER II ELECTRONIC PROGRAMMABLE THERMOSTAT EMERGENCY HEAT CONTROL PACKAGE Carrier’s electronic programmable thermostat pro- vides efficient temperature control by allowing you to program heating and cooling setbacks and set ups with provisions for weekends and holidays. Accessory remote sensing package is also available to provide tamperproof control in high traffic spaces.
  • Page 7 THERMOSTAT UNIT MOUNTED DISCONNECT Zone thermostat (24 v) provides one- or 2-stage cooling for control of unit. Matching subbases are available with or without tamperproof switches and automatic changeover. Factory-installed, internally-mounted, NEC (U.S.A. Standard) and UL ELECTRIC HEATER (Underwriters’ Laboratories) approved non-fused switch provides unit power shutoff.
  • Page 8 Options and accessories (cont) DURABLADE ECONOMIZER ACCUSENSOR™ II Exclusive Durablade economizer damper design saves energy while providing economical and reliable cooling. A sliding plate on the face of the economizer controls the ACCUSENSOR III amount of outdoor air entering the system. Closed, it pro- vides a leakproof seal which prevents ambient air from seep- ing in or conditioned air from seeping out.

  • Page 9: Base Unit Dimensions

    Base unit dimensions STANDARD ECONOMIZER CORNER CORNER CORNER CORNER UNIT WEIGHT WEIGHT WEIGHT WEIGHT WEIGHT “H” “J” “K” UNIT WEIGHT (DURABLADE) 50TFQ ft-in. ft-in. ft-in. 2- 0 1050 2- 0 1050 1015 2-10 1253 NOTES: 4. Ductwork to be attached to accessory roof curb only. 1.

  • Page 10: Accessory Dimensions

    Accessory dimensions ROOF CURB 50TFQ008-012 ROOF CURB UNIT SIZE “D” ALT CONNECTOR UNIT SIZE “A” “B” “C” DRAIN POWER CONTROL PACKAGED ACCESSORY 50TFQ 50TFQ HOLE ACCESSORY CRRFCURB003A00 1′-2″ [356] 008-012 CRBTMPWR001A00 ″ NPT ″ NPT CRRFCURB004A00 2′-0″ [610] ″ ″...

  • Page 11: Selection Procedure

    Selection procedure (with 50TFQ008 example) — SI I. Determine cooling and heating requirements Total unit heating capacity is 19.9 kW (9.48 + at design conditions. 10.4). Given: IV. Determine fan speed and power require- Required Cooling Capacity (TC) ..23 kW ments at design conditions.
  • Page 12 Selection procedure (with 50TFQ008 example) — English I. Determine cooling and heating requirements Total unit heating capacity is 67,603 Btuh (32,200 at design conditions. + 35,403). Given: IV. Determine fan speed and power require- ments at design conditions. Required Cooling Capacity (TC) ..78,000 Btuh Sensible Heat Capacity (SHC) .

  • Page 13: Performance Data

    Performance data COOLING CAPACITIES 50TFQ008 Indoor Air — L/s / BF Temp (C) 850/0.09 1150/0.23 1200/0.25 Outdoor Entering Air Indoor Air — Ewb (C) (Edb) 22.2 23.6 25.2 26.8 28.2 24.6 25.4 26.6 28.2 29.8 25.0 25.6 26.8 28.4 30.0 20.2 18.4 16.3...

  • Page 14: Performance Data

    Performance data (cont) COOLING CAPACITIES (SI) (cont) 50TFQ009 Indoor Air — L/s / BF Temp (C) 950/0.10 1250/0.24 1400/0.30 Outdoor Entering Air Indoor Air — Ewb (C) (Edb) 23.8 25.2 26.8 28.4 29.6 26.2 27.0 28.0 29.2 30.4 27.0 27.6 28.6 29.6 30.8...
  • Page 15 COOLING CAPACITIES (SI) (cont) 50TFQ012 Indoor Air — L/s / BF Temp (C) 1100/0.15 1450/0.29 1600/0.34 Outdoor Entering Air Indoor Air — Ewb (C) (Edb) 26.2 27.6 29.2 31.0 32.6 28.6 29.1 30.8 32.4 34.0 29.4 30.0 31.2 32.8 34.2 25.4 23.4 21.0...
  • Page 16 Performance data (cont) COOLING CAPACITIES (ENGLISH) 50TFQ008 Indoor Air — Cfm/BF Temp (F) 1850/0.03 2450/0.05 2600/0.06 3050/0.10 Outdoor Entering Air Indoor Air — Ewb (F) (Edb) 95.4 87.2 79.0 99.4 92.6 84.2 100.6 93.4 85.4 103.6 95.6 88.4 38.4 49.0 59.6 42.4 57.0...
  • Page 17 COOLING CAPACITIES (ENGLISH) (cont) 50TFQ012 Indoor Air — Cfm/BF Temp (F) 2350/0.09 3100/0.14 3400/0.16 3900/0.20 Outdoor Entering Air Indoor Air — Ewb (F) (Edb) 110.4 102.4 94.0 114.6 107.6 99.0 115.4 109.0 100.4 116.8 111.0 102.4 52.0 64.8 77.6 56.2 73.2 89.2 57.4...
  • Page 18 Performance data (cont) INSTANTANEOUS AND INTEGRATED HEATING RATINGS (SI) 50TFQ008 Return Air Temperature Entering Outdoor Coil (C) (Standard –20 –16 –12 –8 –4 (C db) Air) Cap. 11.0 10.1 12.4 11.3 14.1 12.5 15.8 14.3 17.5 17.3 19.2 19.2 21.2 21.2 23.2 23.2 4.24 4.50 4.74...
  • Page 19 INSTANTANEOUS AND INTEGRATED HEATING RATINGS (SI) (cont) 50TFQ009 Return Air Temperature Entering Outdoor Coil (C) (Standard –20 –16 –12 –8 –4 (C db) Air) Cap. 11.0 12.7 11.6 14.6 13.3 16.6 14.7 18.6 16.8 20.8 20.6 22.8 22.8 25.2 25.2 27.8 27.8 4.94 5.20 5.46...
  • Page 20 Performance data (cont) INSTANTANEOUS AND INTEGRATED HEATING RATINGS (SI) (cont) 50TFQ012 Return Air Temperature Entering Outdoor Coil (C) (Standard –20 –16 –12 –8 –4 (C db) Air) Cap. 11.5 9.8 13.2 11.2 14.9 13.7 16.8 15.3 18.9 16.8 21.0 19.0 23.2 23.0 25.4 25.4 28.0 28.0 30.6 30.6 1000 5.80 6.02...
  • Page 21 INSTANTANEOUS AND INTEGRATED HEATING RATINGS (ENGLISH) 50TFQ008 Return Air Temperature Entering Outdoor Coil (F) (Standard (F db) Air) Cap. 30.2 25.6 37.0 34.0 41.8 38.0 52.0 45.6 60.0 60.0 66.0 66.0 68.8 68.8 78.0 78.0 1650 4.40 4.74 4.98 5.48 5.90 6.24 6.40...
  • Page 22 Performance data (cont) INSTANTANEOUS AND INTEGRATED HEATING RATINGS (ENGLISH) (cont) 50TFQ009 Return Air Temperature Entering Outdoor Coil (F) (Standard (F db) Air) Cap. 35.0 29.8 42.6 39.2 49.0 44.6 61.2 53.6 71.2 71.2 78.2 78.2 81.6 81.6 93.4 93.4 1850 5.12 5.48 5.78...
  • Page 23 INSTANTANEOUS AND INTEGRATED HEATING RATINGS (ENGLISH) (cont) 50TJQ012 Return Air Temperature Entering Outdoor Coil (F) (Standard (F db) Air) Cap. 42.2 36.0 50.4 46.2 56.8 51.8 69.6 61.0 79.8 79.8 87.2 87.2 90.6 90.6 103.2 103.2 2100 6.00 6.30 6.54 7.04 7.46 7.80...
  • Page 24 — Fan Wheel Speed, Revolutions per Second failure. 4. Use of field-supplied motor may affect wire sizing. Contact Carrier NOTES: representative to verify. 1. Boldface indicates field-supplied drive required.
  • Page 25 — Fan Wheel Speed, Revolutions per Second failure. 4. Use of field-supplied motor may affect wire sizing. Contact Carrier NOTES: representative to verify. 1. Boldface indicates field-supplied drive required.
  • Page 26 — Brake Horsepower result in nuisance tripping or premature motor failure. Rpm — Fan Wheel Speed, Revolutions per Minute 4. Use of field-supplied motor may affect wire sizing. Contact Carrier representative to verify. NOTES: 5. Values include losses for filters, unit casing, and wet coils.
  • Page 27 — Brake Horsepower result in nuisance tripping or premature motor failure. Rpm — Fan Wheel Speed, Revolutions per Minute 4. Use of field-supplied motor may affect wire sizing. Contact Carrier representative to verify. NOTES: 5. Values include losses for filters, unit casing, and wet coils.
  • Page 28 Performance data (cont) ACCESSORY STATIC PRESSURE DROP (Pa) 50TFQ008-012 COMPONENT 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 1 Heater Module 2 Heater Modules Economizer ACCESSORY STATIC PRESSURE DROP (in. wg) 50TFQ008-012 COMPONENT 2200 2500...
  • Page 29 DURABLADE ECONOMIZER BAROMETRIC RELIEF DAMPER CHARACTERISTICS 50TFQ008-012 INDOOR-FAN MOTOR PERFORMANCE MAXIMUM MAXIMUM MAXIMUM MAXIMUM UNIT INDOOR-FAN UNIT ACCEPTABLE ACCEPTABLE ACCEPTABLE 50TFQ MOTOR VOLTAGE CONTINUOUS CONTINUOUS OPERATING DRAW BkW* BHP* WATTS Standard 1.79 2.40 2120 Standard 1.79 2.40 2120 Standard 2.16 2.90...

  • Page 30: Electrical Data

    Electrical data VOLTAGE COMPRESSOR DISCONNECT ELECTRIC HEAT* POWER SUPPLY RANGE (each) SIZE† UNIT NOMINAL 50TFQ V-PH-Hz TYPE Nominal MOCP kW** — — 18.9 20†† 13.9 36.3 40†† 11.5 16.6 39.6 40†† 400-3-50 42.0 19.3 27.9 53.8 60†† 22.9 33.1 60.3 28.9 41.7 71.0...

  • Page 31: Typical Piping And Wiring

    Typical piping and wiring HORIZONTAL DISCHARGE DUCTING VERTICAL DISCHARGE DUCTING LEGEND NEC — National Electrical Code (U.S.A.)

  • Page 32: Controls

    Controls Operating sequence The damper position will be determined by the supply-air temperature. Cooling, units without economizer — When thermo- stat calls for cooling, terminals G and Y1 are energized. When the first stage of cooling is satisfied, the damper The indoor fan contactor (IFC), reversing valve solenoid will move to fully closed position.

  • Page 33: Typical Wiring Schematic

    Typical wiring schematic...
  • Page 34 Typical wiring schematic (cont) LEGEND AND NOTES FOR TYPICAL WIRING SCHEMATIC — Quadruple Terminal — Adjustable Heat Anticipator — Relay — American Wire Gage — Reversing Valve Solenoid — Contactor, Compressor — Supply-Air Thermostat — Capacitor — Switch Fully Open —...

  • Page 35: Application Data

    Apollo direct digital controls — The Apollo direct digi- changeover thermostat and subbase are used. tal controls must be used with either a Carrier master or Airflow — Units are draw-thru on cooling and blow-thru monitor thermostat.

  • Page 36: Guide Specifications

    Nominal Cooling drains and shall comply with ASHRAE 62. 6. Unit shall have factory-installed filter access Carrier Model Number: 50TFQ panel to provide filter access with tool-less Part 1 — General removal. 1.01 SYSTEM DESCRIPTION 7.
  • Page 37 gloss black with gloss — 60 deg of 65 to 90% 3. Filter section shall use only one size filter. per ASTM D523-89. Uniform dry film thick- 4. Filters shall be accessible through an access ness from 0.8 to 1.2 mil on all surface areas panel with ‘‘no-tool’’...
  • Page 38 * 7. 25% Two-Position Damper: and outdoor-air temperature. a. Two-position damper package shall include c. Shall work with Carrier TEMP and VVT® single blade damper and motor. Admits up systems. to 25% outdoor air. d. Shall have built-in diagnostics for thermostat b.
  • Page 39 Shall use built-in compressor cycle delay control for both heating and cooling duty. Shall be factory-installed. Internally-mounted, Capable of working with Carrier direct digital NEC and UL approved non-fused switch pro- controls. vides unit power shutoff. Shall be accessible from outside the unit.
  • Page 40 Carrier Corporation • Syracuse, New York 13221 9-00 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. 005-012 Printed in U.S.A.

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