Carrier 50HCQA04-06 Installation Instructions Manual

Single package rooftop heat pump with puron (r-410a) refrigerant

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SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . 1

MODEL NUMBER NOMENCLATURE

AND DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Rated Indoor Airflow . . . . . . . . . . . . . . . . . . . . . . . . 2

INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Job Site Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Step 1 — Plan for Unit Location . . . . . . . . . . . . . . . 6

• ROOF MOUNT

Step 2 — Plan for Sequence of Unit

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

• CURB-MOUNTED INSTALLATION

• PAD-MOUNTED INSTALLATION

• FRAME-MOUNTED INSTALLATION

Step 3 — Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . 7

Step 4 — Provide Unit Support . . . . . . . . . . . . . . . . 7

• ROOF CURB MOUNT

• SLAB MOUNT (HORIZONTAL UNITS ONLY)

• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB

OR SLAB MOUNT)

Step 5 — Field Fabricate Ductwork . . . . . . . . . . . . 9

• UNITS WITH ACCESSORY ELECTRIC HEATERS

Step 6 — Rig and Place Unit . . . . . . . . . . . . . . . . . . 9

Step 7 — Convert to Horizontal and

Connect Ductwork (when required) . . . . . . . . . . . 10

Step 8 — Install Outside Air Hood . . . . . . . . . . . . 11

• ECONOMIZER HOOD REMOVAL AND SETUP

• TWO-POSITION DAMPER HOOD REMOVAL AND

SETUP

• ECONOMIZER AND TWO-POSITION HOOD

ASSEMBLY

Step 9 — Units with Hinged Panels Only . . . . . . . 12

Step 10 — Install External Condensate Trap

and Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Step 11 — Make Electrical Connections . . . . . . . 13

• FIELD POWER SUPPLY

• UNITS WITHOUT FACTORY-INSTALLED

DISCONNECT

• UNITS WITH FACTORY-INSTALLED DISCONNECT

• ALL UNITS

• CONVENIENCE OUTLETS

• FACTORY-OPTION THRU-BASE CONNECTIONS

(ELECTRICAL CONNECTIONS)

• UNITS WITHOUT THRU-BASE CONNECTIONS

(ELECTRICAL CONNECTIONS)

• FIELD CONTROL WIRING

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53500210-01

Installation Instructions

Printed in U.S.A.

Form 50HCQ-4-6-01SI

Single Package Rooftop Heat Pump

with Puron

• THERMOSTAT

• HEAT ANTICIPATOR SETTINGS

• COMMERCIAL DEFROST CONTROL

• ELECTRIC HEATERS

• CONTROL AND POWER WIRING DIAGRAMS

• ECONOMI$ER (FACTORY OPTION)

• SMOKE DETECTORS

• RTU OPEN CONTROLLER (FACTORY OPTION)

• CONTROLLER OPTIONS

Step 12 — Adjust Factory-Installed Options . . . 43

• SMOKE DETECTORS

• ECONOMI$ER IV OCCUPANCY SWITCH

Step 13 — Install Accessories . . . . . . . . . . . . . . . 43

Step 14 — Check Belt Tension . . . . . . . . . . . . . . 45

• BELT FORCE — DEFLECTION METHOD

• BELT TENSION METHOD

Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . 45

Typical Unit Piping . . . . . . . . . . . . . . . . . . . . . . . . 45

START-UP CHECKLIST . . . . . . . . . . . . . . . . . . .CL-1

SAFETY CONSIDERATIONS

Improper

installation,

maintenance, or use can cause explosion, fire, electrical shock

or other conditions which may cause personal injury or

property damage. Consult a qualified installer, service agency,

or your distributor or branch for information or assistance. The

qualified installer or agency must use factory-authorized kits or

accessories when modifying this product. Refer to the

individual instructions packaged with the kits or accessories

when installing.

Follow all safety codes. Wear safety glasses and work gloves.

Use quenching cloths for brazing operations and have a fire

extinguisher available. Read these instructions thoroughly and

follow all warnings or cautions attached to the unit. Consult

local building codes and appropriate national electrical codes

(in USA, ANSI/NFPA70, National Electrical Code (NEC); in

Canada, CSA C22.1) for special requirements.

It is important to recognize safety information. This is the

safety-alert symbol

. When you see this symbol on the unit

and in instructions or manuals, be alert to the potential for

personal injury.

Understand the signal

CAUTION, and NOTE. These words are used with the safety-

alert symbol. DANGER identifies the most serious hazards

which will result in severe personal injury or death.

WARNING signifies hazards which could result in personal

injury or death. CAUTION is used to identify unsafe practices,

which may result in minor personal injury or product and

property damage. NOTE is used to highlight suggestions

Pg 1

50HCQA04-06

(R-410A) Refrigerant

adjustment,

alteration,

words

DANGER, WARNING,

12-18

Replaces: 50HCQ-01SI

service,

Table of Contents

Summary of Contents for Carrier 50HCQA04-06

Page 1 50HCQA04-06 Single Package Rooftop Heat Pump with Puron ® (R-410A) Refrigerant Installation Instructions • THERMOSTAT SAFETY CONSIDERATIONS ....1 • HEAT ANTICIPATOR SETTINGS MODEL NUMBER NOMENCLATURE AND DIMENSIONS .
Page 2: Cut Hazard
which will result in enhanced installation, reliability, or MODEL NUMBER NOMENCLATURE AND operation. DIMENSIONS See Fig. 1 for 50HCQ model number nomenclature. See Fig. 2 WARNING for unit dimensional drawings. Figure 3 shows service clear- ance dimensions. ELECTRICAL SHOCK HAZARD Rated Indoor Airflow Failure to follow this warning could cause personal injury or death.
Page 3 9 10 11 12 13 14 15 16 17 18 Packaging Options 0 - Standard Series - Weathermaster 1 - LTL 50HC - Packaged Rooftop - High Efficiency Electrical Options A - None C - Non-Fused Disconnect Q - Heat Pump D - Thru-The-Base Connections F - Non-Fused Disconnect and Thru-The-Base Connections...
Page 4 Vertical Connections / Economizer Horizontal Connections / Economizer Fig. 2 — Unit Dimensional Drawing — 04-06 Size Units...
Page 5: Installation
Fig. 2 — Unit Dimensional Drawing — 04-06 Size Units (cont) INSTALLATION Step 1 — Plan for Unit Location Select a location for the unit and its support system (curb or Jobsite Survey other) that provides for the minimum clearances required for Complete the following checks before installation.
Page 6: Roof Mount
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 7: Step 3 - Inspect Unit
SLAB MOUNT (HORIZONTAL UNITS ONLY) Step 3 — Inspect Unit Inspect unit for transportation damage. File any claim with Provide a level concrete slab that extends a minimum of 6 in. transportation agency. (150 mm) beyond unit cabinet. Install a gravel apron in front of condenser coil air inlet to prevent grass and foliage from ob- Confirm before installation of unit that voltage, amperage and structing airflow.
Page 8 ROOFCURB UNIT SIZE ACCESSORY 1’ - 2” CRRFCURB001A02 [356] 50HCQA04-06 2’ - 0” CRRFCURB002A02 [610] Fig. 4 — Roof Curb Details...
Page 9: Step 5 - Field Fabricate Ductwork
WARNING Failure to follow this warning could cause personal injury. For vertical supply and return units, tools or parts could drop into ductwork and cause an injury. Install a 90-degree turn in the return ductwork between the unit and the condi- tioned space.
Page 10: Step 7 - Convert To Horizontal And Connect
"B" DETAIL "A" 36"- 54" PLACE ALL SEAL STRIP IN PLACE REQUIRED (914-1371) BEFORE PLACING UNIT ON ROOF CURB. SPREADER BARS DUCT END "C" "A" SEE DETAIL "A" DIMENSIONS MAX WEIGHT UNIT 50HCQA04 74.5 1890 48.5 33.5 50HCQA05 74.5 1890 37.5 41.5 1055...
Page 11: Step 8 - Install Outside Air Hood
SCREWS REMOVE HOOD PARTS CUT PLASTIC TIES (2) PLACES ECONOMIZER DUCT COVERS SHEET METAL FACE UP BASEPAN Fig. 11 — Economizer Wiring TWO-POSITION DAMPER HOOD REMOVAL AND SETUP (FACTORY OPTION) The hood is shipped in knock-down form and assembled to a metal support tray using plastic stretch wrap.
Page 12: Step 10 - Install External Condensate Trap And Line
ECONOMIZER AND TWO-POSITION HOOD Caulk the ends of the joint between the unit top panel and ASSEMBLY the hood top. Replace the filter access panel. NOTE: If the power exhaust accessory is to be installed on the unit, the hood shipped with the unit will not be used and must be discarded.
Page 13: Fire Hazard
method is acceptable in your area.) If a de-energize via unit disconnect switch operation of the convenience outlet is de- sired, connect the source leads to the load side of the unit dis- connect. On a unit without a unit-mounted disconnect, connect the source leads to compressor contactor C and indoor fan con- tactor IFC pressure lugs with unit field power leads.
Page 14: All Units
Two types of convenience outlets are offered on 50HCQA Units Without Disconnect Option models: non-powered and unit-powered. Both types provide a 125-volt GFCI (ground-fault circuit interrupter) duplex recep- (3 Phase tacle rated at 15A behind a hinged waterproof access cover, lo- Indoor Motor) cated on the end panel of the unit.
Page 15 GFCI RECEPTACLE NOT INCLUDED COVER - WHILE-IN-USE WEATHERPROOF GASKET BASEPLATE FOR GFCI RECEPTACLE Fig. 22 — Weatherproof Cover Installation Non-Powered Convenience Outlet UNIT CONNECT PRIMARY TRANSFORMER This type requires the field installation of a general-purpose VOLTAGE CONNECTIONS TERMINALS 125v 15A circuit powered from a source elsewhere in the L1: RED + YEL H1 + H3 208, 230...
Page 16: Factory-Option Thru-Base Connections (Elec- Trical Connections)
The 50HCQ 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 ® or as a stand-alone control) or the RTU Open Controller...
Page 17: Heat Anticipator Settings
HEAT ANTICIPATOR SETTINGS Set heat anticipator settings at 0.14 amp for the first stage and Typical Central 0.14 amp for second-stage heating, when available. Thermostat Terminal Corrections Board COMMERCIAL DEFROST CONTROL The Commercial Defrost Control Board (DFB) coordinates thermostat demands for supply fan control, 1 or 2 stage cool- ing, 2 stage heating, emergency heating and defrost control with unit operating sequences.
Page 18 Fig. 29 — Defrost Control Board Location Table 3 — 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...
Page 19: Electric Heaters
Auxiliary (Electric) Heat control The 50HCQ unit can be equipped with one or two auxiliary DISCONNECT MOUNTING LOCATION electric heaters, to provide a second stage of heating. The DFB will energize this Heating System for a Stage 2 Heating Com- mand (heaters operate concurrently with compressor(s) in the Stage 1 Heating cycle), for an Emergency Heating sequence (compressors are off and only the electric heaters are ener-...
Page 20 Single Point Boxes and Supplementary Fuses CONTROL When the unit MOCP device value exceeds 60-A, unit-mount- ed supplementary fuses are required for each heater circuit. BUSHING 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 SINGLE POINT BOX...
Page 21 Low Voltage Control Connections CONTROL AND POWER WIRING DIAGRAMS Run the low-voltage control leads from the heater module(s) Figures 36-44 are typical control and power wiring diagrams. — VIO and BRN (two of each if two modules are installed; identify for Module #1) — to the 4-pole terminal board TB4 located on the heater bulkhead to the left of Heater #1.
Page 22 Fig. 36 — Electro-Mechanical Control Wiring: 208/230v, 460v...
Page 23 Fig. 37 — Electro-Mechanical Control Wiring: 575v...
Page 24 Fig. 38 — Electro-Mechanical Power Wiring: 208/230-1-60...
Page 25 Fig. 39 — Electro-Mechanical Power Wiring: 208/230-3-60...
Page 26 Fig. 40 — Electro-Mechanical Power Wiring: 460-3-60...
Page 27 Fig. 41 — Electro-Mechanical Power Wiring: 575-3-60...
Page 28 Fig. 42 — PremierLink™ Wiring Schematic: 208/230, 460v...
Page 29 Fig. 43 — PremierLink™ Wiring Schematic: 575v...
Page 30 Fig. 44 — RTU Open System Control Wiring...
Page 31 ECONOMI$ER (FACTORY OPTION) Electrical ® • Rated Voltage — 20 to 30 Vac RMS, 50/60 Hz The EconoMi$er X system is an expandable economizer con- • Transformer — 100 va maximum system input trol system, which includes a W7220 economizer module (con- •...
Page 32 Economizer Module Wiring Details Table 6 — Economizer Module - Left Hand Terminal Blocks Use Fig. 46 and Tables 6 and 7 to locate the wiring terminals for the Economizer module. LABEL TYPE DESCRIPTION NOTE: The four terminal blocks are removable. Slide out each Top Left Terminal Block terminal block, wire it, and then slide it back into place.
Page 33 S-Bus Sensor Wiring Sensor Wiring The labels on the sensors and controller are color coded for When using a CO sensor the black and brown common wires ease of installation. Orange labeled sensors can only be wired are internally connected and only one is connected to “IAQ to orange terminals on the controller.
Page 34 To use the keypad when working with Setpoints, System and Advanced Settings, Checkout tests and Alarms: IMPORTANT: Table 10 illustrates the complete hierar- Navigate to the desired menu. chy. Your menu parameters may be different depending Press the (Enter) button to display the first item in the on your configuration.
Page 35 Table 10 — Menu Structure* PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES † VALUE INCREMENT FIRST STAGE COOLING DEMAND (Y1–IN) ECONO AVAIL YES/NO YES = economizing available; the system can use outside air for free cooling when required FIRST STAGE COOLING RELAY OUTPUT ECONOMIZING YES/NO YES = outside air being used for 1 stage cooling...
Page 36 Table 10 — Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES † VALUE INCREMENT ACT COUNT 1 to 65535 Displays number of times actuator has cycled. 1 cycles equals 180 deg. of actuator movement in any direction. ACTUATOR OK/Alarm (on Alarm Displays ERROR if voltage or torque is below actuator range.
Page 37 Table 10 — Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES † VALUE INCREMENT INSTALL 01/01/10 Display order = MM/DD/YY Setting order = DD, MM, then YY. UNITS DEG F or C Sets economizer controller in degrees Fahrenheit or Celsius EQUIPMENT CONV Conventional or HP...
Page 38 Table 10 — Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES † VALUE INCREMENT MAT T CAL 0.0°F ±2.5 F SUPPLY AIR TEMPERATURE CALIBRATION Allows for the operator to adjust for an out of calibration temperature sensor. OAS T CAL 0.0°F ±2.5 F...
Page 39 Table 10 — Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES † VALUE INCREMENT SHUTDOWN ACTIVE AUX2 IN is programmed for SHUTDOWN and 24 V has been applied to AUX2 IN terminal. DMP CAL RUNNING DAMPER CALIBRATION ROUTINE RUNNING If DCV Auto enable has been programmed, when the W7220 is completing a calibration on the dampers, this alarm will display.
Page 40 Table 12 — Dry Bulb Operation No 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 0v/Off 0v/Off MIN POS Closed NONE HIGH 24v/On 0v/Off MIN POS Closed HIGH...
Page 41 Table 15 — 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 0v/Off 0v/Off VENTMIN Closed HIGH 24v/On 0v/Off VENTMIN Closed HIGH 24v/On 24v/On VENTMIN...
Page 42 ECONOMIZING DUAL ENTHALPY AVAILABLE HIGH LIMIT NOT AVAILABLE SINGLE ENTHALPY P2 (T,RH) (T,RH) TEMPERATURE Fig. 50 — Single Enthalpy Curve Boundaries Checkout NOTE: For information about menu navigation and use of the keypad see Interface Overview on page 33. Inspect all wiring connections at the economizer module’s ter- minals, and verify compliance with the installation wiring dia- To perform a Checkout test: grams.
Page 43: Smoke Detectors
Press the (Menu Up/Exit) button to complete the action Additional Application Data and return to the previous menu. Refer to the application data document “Factory Installed Smoke Detectors for Small and Medium Rooftop Units 2 to 25 NOTE: If the alarm still exists after clearing it, it is redisplayed Tons”...
Page 44 STEP 1 STEP 2 STEP 3 Fig. 52 — Completing Installation of Return Air Smoke Sensor Fig. 53 — EconoMi$er IV Wiring...
Page 45: Belt Force - Deflection Method
Step 14 — Check Belt Tension BLOWER PULLEY Measure the belt span length as shown in Fig. 54. Calculate the required deflection by multiplying the belt span length by V-BELT For example, if the belt span length is 32 inches: 32 x inch deflection.
Page 46 Check Valve C Open Check Valve D Closed © Carrier Corporation 2018 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500210-01 Printed in U.S.A. Form 50HCQ-4-6-01SI...
Page 47: Preliminary Information
START-UP CHECKLIST FOR 50HCQA04-06 SINGLE PACKAGE ROOFTOP HEAT PUMP (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 preced- ing sections of this Installation Instruction document.
Page 48 9. Open humidistat input compressor and outdoor fan stop; LSV and DSV solenoids de-energized (Y/N) _____ 10. Restore set-points for thermostat and humidistat (Y/N) _____ © Carrier Corporation 2018 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Carrier 50HCQA04-06 Installation Instructions Manual

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