Carrier WeatherMaker 50TCQD09 Installation Instructions Manual
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Carrier WeatherMaker 50TCQD09 Installation Instructions Manual

Single package rooftop with heat pump with puron (r-410a) refrigerant
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50TCQ units for installation in the United States contain use of Carrier's Staged Air Volume (SAV™) 2-speed
indoor fan control system. This complies with the U.S. Department of Energy (DOE) efficiency standard
of 2018.
50TCQ units for installation outside the United States may or may not contain use of the SAV 2-speed indoor
fan control system, as they are not required to comply with the U.S. Department of Energy (DOE) efficiency
standard of 2018.
For specific details on operation of the Carrier SAV 2-speed indoor fan system, refer to the Variable Frequency
Drive (VFD) Factory-Installed Option 2-Speed Motor Control Installation, Setup and Troubleshooting manual.
NOTE: Read the entire instruction manual before starting the
installation.
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . 2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . . 2
and Check Valves . . . . . . . . . . . . . . . . . . . . . . . . . 9
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Step 1 - Plan for Unit Location . . . . . . . . . . . . . . . 11
Step 3 - Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . 12
Step 4 - Provide Unit Support . . . . . . . . . . . . . . . . 12
Step 5 - Field Fabricate Ductwork . . . . . . . . . . . . . 14
Step 6 - Rig and Place Unit . . . . . . . . . . . . . . . . . . 14
Ductwork (when required) . . . . . . . . . . . . . . . . . . 15
Step 8 - Install Outside Air Hood . . . . . . . . . . . . . . 16
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500216-01
Installation Instructions
Printed in U.S.A.
Form 50TCQ-8-12-01SI
Single Package Rooftop with Heat Pump
with Puron
Central Terminal Board . . . . . . . . . . . . . . . . . . . . . . 26
Commercial Defrost Control . . . . . . . . . . . . . . . . . . 26
Electric Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
EconoMi$er® X (Factory Option) . . . . . . . . . . . . . . 31
PremierLink™ (Factory Option) . . . . . . . . . . . . . . . 41
RTU-Open Controller System (Factory-Installed
Option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Step 13 - Install Accessories . . . . . . . . . . . . . . . . 42
Step 14 - Check Belt Tension . . . . . . . . . . . . . . . . 43
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . CL-1
Pg 1
1-19
WeatherMaker
50TCQ08-12
®
(R-410A) Refrigerant
Replaces: 50TCQ-8-9-03SI, 50TCQ-12-02SI
®

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Summary of Contents for Carrier WeatherMaker 50TCQD09

  • Page 1: Table Of Contents

    U.S. Department of Energy (DOE) efficiency standard of 2018. For specific details on operation of the Carrier SAV 2-speed indoor fan system, refer to the Variable Frequency Drive (VFD) Factory-Installed Option 2-Speed Motor Control Installation, Setup and Troubleshooting manual.

  • Page 2: Safety Considerations

    SAFETY CONSIDERATIONS WARNING Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock UNIT OPERATION AND SAFETY HAZARD or other conditions which may cause personal injury or Failure to follow this warning could cause personal injury, property damage.
  • Page 3 Position: 9 10 11 12 13 14 15 16 17 18 Example: – Factory Assigned Unit/Series/Model 0 = Standard 50TCQ - Packaged Rooftop Heat Pump 1 = LTL 3 = CA Seismic Complaint 4 = LTL and CA Seismic Compliant Refrig.
  • Page 4 Fig. 2 — Unit Dimensional Drawing – 08 and 09 Size Units...
  • Page 5 Fig. 2 — Unit Dimensional Drawing – 08 and 09 Size Units (cont)
  • Page 6 Fig. 3 — Unit Dimensional Drawing – 12 Size Unit...
  • Page 7 Fig. 3 — Unit Dimensional Drawing – 12 Size Unit (cont)
  • Page 8 LOCATION DIMENSION CONDITION 48-in. (1219 mm) Unit disconnect is mounted on panel 18-in. (457 mm) No disconnect, convenience outlet option 18-in. (457 mm) Recommended service clearance 12-in. (305 mm) Minimum clearance 42-in. (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall) 36-in.

  • Page 9: Refrigeration System Components

    LOCATION DIMENSION CONDITION 48-in. (1219 mm) Unit disconnect is mounted on panel 18-in. (457 mm) No disconnect, convenience outlet option 18-in. (457 mm) Recommended service clearance 12-in. (305 mm) Minimum clearance 42-in. (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall) 36-in.
  • Page 10 Table 2 — Cooling Mode (each circuit) Table 4 — Defrost Mode COMPONENT STATUS/POSITION COMPONENT STATUS/POSITION Reversing Valve Energized Defrost Thermostat Closed Check Valve A Closed Outdoor Fan(s) Check Valve B Open Reversing Valve Energized Check Valve C Closed Check Valve A Closed Check Valve D Open...

  • Page 11: Installation

    CORE SEAT (Part No. EC39EZ067) 1/2-20 UNF RH 0.596 WASHER DEPRESSOR PER ARI 720 O-RING +.01/-.035 1/2” HEX FROM FACE OF BODY 5/8” HEX 7/16-20 UNF RH This surface provides a metal to metal seal when torqued into the seat. Appropriate handing is required to not scratch or dent the surface.

  • Page 12: Frame-Mounted Installation

    Install condensate line trap and piping Make electrical connections Install other accessories FRAME-MOUNTED INSTALLATION Frame-mounted applications generally follow the sequence for a curb installation. Adapt as required to suit specific installa- tion plan. MAXIMUM ALLOWABLE Step 3 — Inspect Unit DIFFERENCE IN.
  • Page 13 Fig. 9 — Roof Curb Details...

  • Page 14: Step 5 - Field Fabricate Ductwork

    Step 5 — Field Fabricate Ductwork Step 6 — Rig and Place Unit Cabinet return-air static pressure (a negative condition) shall Keep unit upright and do not drop. Spreader bars are not re- not exceed 0.35 in. wg (87 Pa) with economizer or 0.45 in. wg quired if top crating is left on unit.

  • Page 15: Step 7 - Convert To Horizontal And Connect Ductwork (When Required)

    DIMENSIONS MAX WEIGHT UNIT 50TCQD08 1235 88.13 2238 39.94 1014 49.38 1253 50TCQD09 1260 88.13 2238 39.63 1006 49.38 1253 50TCQD12 1695 88.0 2235 36.5 49.5 1255 NOTES: 1. Dimensions in ( ) are in millimeters. 2. Hook rigging shackles through holes in base rail, as shown in detail “A.” Holes in base rails are centered around the unit center of gravity. Use wooden top to prevent rigging straps from damaging unit.

  • Page 16: Step 8 - Install Outside Air Hood

    SCREWS DUCT COVERS SHEET METAL FACE UP FILTER ACCESS PANEL INDOOR COIL ACCESS PANEL Fig. 15 — Typical Access Panel Locations (Size 12) BASEPAN Hood Parts Fig. 13 — Horizontal Duct Panels In Place Step 8 — Install Outside Air Hood ECONOMIZER AND TWO-POSITION DAMPER HOOD PACKAGE REMOVAL AND SETUP (FACTORY OPTION) Plastic Tie Wrap...

  • Page 17: Step 9 - Units With Hinged Panels Only

    PANEL Fig. 20 — Compressor Door Latch Location PANEL CAULK HERE Step 10 — Install External Condensate Trap and INDOOR INDOOR Line COIL COIL ACCESS ACCESS The unit has one -in. condensate drain connection on the end PANEL PANEL of the condensate pan and an alternate connection on the bot- tom.

  • Page 18: Step 11 - Make Electrical Connections

    NOTE: All units must have an external trap for condensate drain- age. Install a trap at least 4-in. (102 mm) deep and protect against freeze-up. If drain line is installed downstream from the external trap, pitch the line away from the unit at 1-in. per 10 ft (25 mm in 3 m) of run.
  • Page 19 Fig. 25 — Typical 50TCQ Control Wiring Diagram (Sizes 08-09)
  • Page 20 Fig. 26 — Typical 50TCQ Control Wiring Diagram (Size 12)
  • Page 21 Fig. 27 — 50TCQ 08-09 Power Wiring Diagram...
  • Page 22 Fig. 28 — Typical 50TCQ 12 Power Wiring Diagram (208/230-v, 3 Phase, 60Hz Unit Shown)

  • Page 23: Units With Factory-Installed Non-Fused Disconnect

    UNITS WITH FACTORY-INSTALLED NON-FUSED DISCONNECT The factory-installed option non-fused disconnect (NFD) switch is located in a weatherproof enclosure located under the main control box (see Fig. 29). The manual switch handle is accessible through an opening in the access panel. Discard the factory test leads (see Fig.

  • Page 24: All Units

    Non-powered type Pwd-CO This type requires the field installation of a general-purpose Transformer Convenience 125-volt 15-A circuit powered from a source elsewhere in the Outlet GFCI building. Observe national and local codes when selecting wire size, fuse or breaker requirements and disconnect switch size and location.

  • Page 25: Factory-Option Thru-Base Connections

    Operation on im- proper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components. Such operation would invalidate any applicable Carrier warranty. Example: Supply voltage is 230-3-60 AB = 224 v...

  • Page 26: Field Control Wiring

    The 50TCQ unit requires an external temperature control de- vice. This device can be a thermostat (field-supplied) or a Pre- mierLink™ controller (available as factory-installed option or as field-installed accessory, for use on a Carrier Comfort Net- work ® system or as a stand alone control) or the RTU Open Controller for Building Management Systems using non-CCN Note 1: Typical multi-function marking.

  • Page 27: Reversing Valve Control

    without reversing valve operation to produce Stage 1 Cooling (one compressor runs), Stage 2 Cooling (both compressors run) or Stage 1 Heating (both compressors run). AUXILIARY (ELECTRIC) HEAT CONTROL The 50TCQ unit can be equipped with one or two auxiliary electric heaters, to provide a second stage of heating.

  • Page 28: Unit Without Thru-Base Connection Kit

    Table 6 — 50TCQ Defrost Board I/O and Jumper Configurations POINT NAME TYPE OF I/O CONNECTION PIN NUMBER UNIT CONNECTION NOTE INPUTS G Fan DI, 24 vac P2-3 CTB-G Y1 Cool 1 DI, 24 vac P2-5 CTB-Y1 Y2 Cool 2 DI, 24 vac P2-4 CTB-Y2...

  • Page 29: Heat Anticipator Settings

    HEAT ANTICIPATOR SETTINGS DISCONNECT EMT OR RIGID CONDUIT SINGLE CENTER MANUAL RESET MOUNTING (FIELD-SUPPLIED) POINT BOX POST LIMIT SWITCH Set heat anticipator settings at 0.14 amp for the first stage and LOCATION HEATER 0.14 amp for second-stage heating, when available. COVERS Electric Heaters The 50TCQ units may be equipped with field-installed acces-...

  • Page 30: Single Point Boxes And Supplementary Fuses

    SINGLE POINT BOXES AND SUPPLEMENTARY FUSES When the unit MOCP device value exceeds 60-A, unit-mount- DEFROST BOARD ed supplementary fuses are required for each heater circuit. These fuses are included in accessory single point boxes, with power distribution and fuse blocks. The single point box will be installed directly under the unit control box, just to the left E-HEAT of the partition separating the indoor section (with electric...

  • Page 31: Economi$Er X (Factory Option)

    User Interface ® EconoMi$er X (Factory Option) Provides status for normal operation, setup parameters, check- The EconoMi$er X system is an expandable economizer con- out tests, and alarm and error conditions with a 2-line 16 char- trol system, which includes a W7220 economizer module (con- acter LCD display and four button keypad.

  • Page 32: Economizer Module Wiring Details

    Storage Temperature Table 9 — Economizer Module - Left Hand Terminal –40°F to 150°F (–40°C to 65°C) Blocks Shipping Temperature LABEL TYPE DESCRIPTION –40°F to 150°F (–40°C to 65°C) Top Left Terminal Block Relative Humidity 20k NTC Mixed Air Temperature Sensor (Polarity 5% to 95% RH non-condensing and COM Insensitive Connection)

  • Page 33: Interface Overview

    SENSOR (HOT) BLACK YELLOW ANALOG BROWN – ORANGE GREEN SWITCH POWER SUPPLY. PROVIDE DISCONNECT LABEL MEANS AND OVERLOAD PROTECTION AS REQUIRED. Fig. 51 — CO Sensor Wiring SWITCHES INTERFACE OVERVIEW This section describes how to use the EconoMi$er ® user inter- face for: •...

  • Page 34: Setup And Configuration

    Press the (Enter) button to display the value of the • ADVANCED SETUP currently displayed item. • CHECKOUT Press the ▲ button to increase (change) the displayed • ALARMS parameter value. NOTE: Some parameters in the menus use the letters MA or Press the ▼...
  • Page 35 Table 13 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † OUTSIDE AIR RELATIVE HUMIDITY Displays measured value of outdoor humidity from OA Sylk Bus OA HUM _ _ % 0 to 100% sensor.
  • Page 36 Table 13 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † VENTILATION MINIMUM POSITION MIN POS 2.8 V 2 to 10 vdc Displays ONLY if a CO sensor is NOT connected. DCV MAXIMUM DAMPER POSITION Displays only if a CO sensor is connected.
  • Page 37 Table 13 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † 1000 to 3000 ppm; ppm span to match CO sensor; e.g.: 500-1500 sensor CO2 SPAN 2000ppm Increment by 50 output would be 500 CO zero and 1000 CO span.
  • Page 38 Table 13 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † OA SYLK T ERR OUTSIDE AIR S-BUS SENSOR ERROR Outdoor air enthalpy sensor has failed or become disconnected - OA SYLK H ERR check wiring, then replace sensor if the alarm continues.
  • Page 39 Table 14 — Damper Minimum Position Settings and Readings on Checkout Menu DEMAND CONTROLLED FAN SPEED VENTILATION SETPOINTS CHECKOUT SENSOR) MIN POS VMAX–HS VENT MIN VMAX–HS VENT MAX VMAX–HS Table 15 — Dry Bulb Operation Without DCV (CO Sensor) — 1 Speed Fan DEMAND OUTSIDE AIR CONTROLLED...

  • Page 40: Enthalpy Settings

    Table 18 — Enthalpy Operation With DCV (CO Sensor) — 1 Speed Fan DEMAND OUTSIDE AIR CONTROLLED GOOD TO Y1-I Y2-I Y1-O Y2-O OCCUPIED UNOCCUPIED SPEED VENTILATION (DCV) ECONOMIZE High 0-v/Off 0-v/Off Closed VENTMIN High 24-v/On 0-v/Off Closed VENTMIN High 24-v/On 24-v/On Closed...

  • Page 41: Checkout

    Table 19 — Single Enthalpy and Dual Enthalpy High Limit Curves POINT P1 POINT P2 ENTHALPY TEMP. DRY TEMP. ENTHALPY HUMIDITY HUMIDITY CURVE BULB (F) DEWPOINT (F) (btu/lb/da) TEMP. (F) TEMP. (F) (%RH) (%RH) 28.0 36.8 66.3 80.1 26.0 39.6 63.3 80.0 24.0...

  • Page 42: Completing Installation Of Return Air Smoke Sensor

    ECONOMI$ER IV OCCUPANCY SWITCH RETURN AIR Refer to Fig. 56 for general EconoMi$er IV wiring. External SMOKE DETECTOR (AS SHIPPED) occupancy control is managed through a connection on the Central Terminal Board. If external occupancy control is desired, connect a time clock or remotely controlled switch (closed for Occupied, open for Unoc- cupied sequence) at terminals marked OCCUPANCY on CTB.

  • Page 43: Step 14 - Check Belt Tension

    2 Position Damper Unit Without Economizer or Economizer 2 Position Damper ® Fig. 56 — EconoMi$er IV Wiring Step 14 — Check Belt Tension Measure the belt span length as shown in Fig. 57. Calculate the required deflection by multiplying the belt span length by For example, if the belt span length is 32 inches: 32 x -in.

  • Page 44: Belt Tension Method

    BELT TENSION METHOD Requires belt tension gage that measures tension in belt in units of lbs force. BLOWER PULLEY V-BELT MOTOR PULLEY MOTOR MOUNTING MOTOR MOUNTING BOLTS (4) PLATE Fig. 58 — Belt Drive Motor Mounting...
  • Page 46 © Carrier Corporation 2019 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500216-01 Printed in U.S.A. Form 50TCQ-8-12-01SI Pg 46 1-19 Replaces: 50TCQ-8-9-03SI, 50TCQ-12-02SI...

  • Page 47: Start-Up Checklist

    START-UP CHECKLIST (Remove and use for job file) NOTE: To avoid injury to personnel and damage to equipment or property when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety considerations/information as outlined in preceding sec- tions of this Installation Instructions document.
  • Page 48 10. Restore set-points for thermostat and humidistat (Y/N) _____ REPEAT PROCESS FOR 2 COMPRESSOR SYSTEMS. © Carrier Corporation 2019 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500216-01 Printed in U.S.A.

This manual is also suitable for:

Weathermaker 50tcqd12Weathermaker 50tcq08Weathermaker 50tcq14

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