Carrier WeatherMaster 50HCQ 04 Series Installation Instructions Manual Download Page 1 | Manualshive

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Carrier WeatherMaster 50HCQ 04 Series Installation Instructions Manual Download Page 1

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

Catalog No. 04-53500242-01

Printed in U.S.A.

Form 50HCQ-4-6-02SI

Pg 1

12-19

Replaces: 50HCQ-4-6-01SI

Installation Instructions

TABLE OF CONTENTS

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
MODEL NUMBER NOMENCLATURE AND

DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Rated Indoor Airflow  . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Step 1 — Plan for Unit Location   . . . . . . . . . . . . . . . . 9

Step 2 — Plan for Sequence of Unit Installation . . . 9

• CURB-MOUNTED INSTALLATION

• PAD-MOUNTED INSTALLATION

• FRAME-MOUNTED INSTALLATION

Step 3 — Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . . 9
Step 4 — Provide Unit Support . . . . . . . . . . . . . . . . . 9

• ROOF CURB MOUNT

• SLAB MOUNT (HORIZONTAL UNITS ONLY)

• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB OR

Step 5 — Field Fabricate Ductwork . . . . . . . . . . . . . 11

• UNITS WITH ACCESSORY ELECTRIC HEATERS

Step 6 — Rig and Place Unit . . . . . . . . . . . . . . . . . . 11
Step 7 — Convert to Horizontal and Connect

Ductwork (when required) . . . . . . . . . . . . . . . . . . 12

Step 8 — Install Outside Air Hood . . . . . . . . . . . . . . 13

• ECONOMIZER HOOD REMOVAL AND SETUP

(FACTORY OPTION)

• TWO-POSITION DAMPER HOOD REMOVAL AND

SETUP (FACTORY OPTION)

• ECONOMIZER AND TWO-POSITION HOOD

Step 9 — Units with Hinged Panels Only . . . . . . . . 14
Step 10 — Install External Condensate Trap and

Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Step 11 — Make Electrical Connections . . . . . . . . . 15

• FIELD POWER SUPPLY

• UNITS WITHOUT FACTORY-INSTALLED

• UNITS WITH FACTORY-INSTALLED DISCONNECT

• CONVENIENCE OUTLETS

• FACTORY OPTION THRU-BASE CONNECTIONS

• UNITS WITHOUT THRU-BASE CONNECTIONS

(ELECTRICAL CONNECTIONS)

• FIELD CONTROL WIRING

• HEAT ANTICIPATOR SETTINGS

• COMMERCIAL DEFROST CONTROL

• ELECTRIC HEATERS

• CONTROL AND POWER WIRING DIAGRAMS

Economi$er® X (Factory Option) . . . . . . . . . . . . . . . 32

• SYSTEM COMPONENTS

• SPECIFICATIONS

• ENVIRONMENTAL

• ECONOMIZER MODULE WIRING DETAILS

• INTERFACE OVERVIEW

• SETUP AND CONFIGURATION

• ENTHALPY SETTINGS

• TROUBLESHOOTING

Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

• COMPLETING RETURN AIR SMOKE SENSOR

• ADDITIONAL APPLICATION DATA

RTU Open Control System . . . . . . . . . . . . . . . . . . . .44
Controller Options . . . . . . . . . . . . . . . . . . . . . . . . . . .44

• LOW AMBIENT

Step 12 — Adjust Factory-Installed Options . . . . . .44

• SMOKE DETECTORS

• ECONOMI$ER IV OCCUPANCY SWITCH

Step 13 — Install Accessories . . . . . . . . . . . . . . . . .44
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

Installation and servicing of air-conditioning equipment can be

hazardous due to system pressure and electrical components. Only

trained and qualified service personnel should install, repair, or

service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions of

cleaning coils and filters and replacing filters. All other operations

should be performed by trained service personnel. When working

on air-conditioning equipment, observe precautions in the litera-

ture, tags and labels attached to the unit, and other safety precau-

tions that may apply.
Follow all safety codes, including ANSI (American National Stan-

dards Institute) Z223.1. Wear safety glasses and work gloves. Use

quenching cloth for unbrazing operations. Have fire extinguisher

available for all brazing operations.
It is important to recognize safety information. This is the safety-

alert symbol

. When you see this symbol on the unit and in in-

structions or manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, 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 which

will

result in enhanced installation, reliability,

or operation.

WeatherMaster

®

50HCQ*04-06

Single Package Rooftop Heat Pump

with Puron

®

(R-410A) Refrigerant

1
2
3
...
»

Summary of Contents for WeatherMaster 50HCQ 04 Series

Page 1: ...PLETING RETURN AIR SMOKE SENSOR INSTALLATION ADDITIONAL APPLICATION DATA RTU Open Control System 44 Controller Options 44 LOW AMBIENT Step 12 Adjust Factory Installed Options 44 SMOKE DETECTORS ECONOMI ER IV OCCUPANCY SWITCH Step 13 Install Accessories 44 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 CHECKLI...

Page 2: ...his warning could cause personal injury death and or equipment damage R 410A refrigerant systems operate at higher pressures than standard R 22 systems Do not use R 22 service equipment or components on R 410A refrigerant equipment WARNING PERSONAL INJURYAND ENVIRONMENTAL HAZARD Failure to follow this warning could cause personal injury or death Relieve pressure and recover all refrigerant before ...

Page 3: ... Fused Disconnect D Thru The Base Connections F Non Fused Disconnect and Thru The Base Connections Service Options 0 None 1 Unpowered Convenience Outlet 2 Powered Convenience Outlet 3 Hinged Panels 4 Hinged Panels Unpowered Convenience Outlet 5 Hinged Panels Powered Convenience Outlet Intake Exhaust Options A None B Temperature Economizer w Barometric Relief K Enthalpy Economizer w Barometric Reli...

Page 4: ...4 Fig 2 50HCQ 04 06 Units Built On and After 4 15 2019 ...

Page 5: ...5 Fig 3 50HCQ 04 06 Units Built Prior to 4 15 2019 ...

Page 6: ...6 Fig 4 50HCQ 04 06 Corner Weights and Clearances ...

Page 7: ...7 Fig 5 50HCQ 04 06 Base Rail Details ...

Page 8: ...8 Fig 6 50HCQ 04 06 Thru the Base Charts ...

Page 9: ...nsate drain connection plug 3 Rig and place unit 4 Convert unit to side duct connection arrangement 5 Install field fabricated ductwork at unit duct openings 6 Install outdoor air hood 7 Install condensate line trap and piping 8 Make electrical connections 9 Install other accessories FRAME MOUNTED INSTALLATION Frame mounted applications generally follow the sequence for a curb installation Adapt t...

Page 10: ...10 Fig 7 Roof Curb Details 50HCQA04 06 ROOFCURB ACCESSORY CRRFCURB001A02 CRRFCURB002A02 1 2 356 2 0 610 UNIT SIZE ...

Page 11: ... in Fig 9 Refer to rigging instructions on unit Before setting the unit onto the curb recheck gasketing on curb Position unit on roof curb so that the following clearances are maintained 1 4 in 6 4 mm clearance between the roof curb and the base rail inside the front and rear 0 0 in clearance between the roof curb and the base rail inside on the duct end of the unit This will result in the distanc...

Page 12: ...ld be secured to the flanges Insulate and weatherproof all external ductwork joints and roof or build ing openings with counter flashing and mastic in accordance with applicable codes Do not cover or obscure visibility to the unit s informative data plate when insulating horizontal ductwork Fig 10 Horizontal Conversion Panels Fig 11 Location of Notches DETAIL A PLACE ALL SEAL STRIP IN PLACE BEFORE...

Page 13: ... To gain access to the hood remove the filter access panel See Fig 13 2 Locate the 2 screws holding the metal tray to the basepan and remove Locate and cut the 2 plastic tie wraps securing the assembly to the damper See Fig 15 Be careful not to damage any wiring or cut tie wraps securing any wiring 3 Carefully lift the hood assembly with metal tray through the filter access opening and assemble pe...

Page 14: ... shown in Fig 19 after unit installation If the unit does not have hinged panels skip this step and continue at Step 10 below Fig 19 Compressor Door Latch Location Step 10 Install External Condensate Trap and Line The unit has one 3 4 in condensate drain connection on the end of the condensate pan and an alternate connection on the bottom See Fig 20 Unit airflow configuration does not determine wh...

Page 15: ...ctory run test purposes only re move and discard before connecting field power wires to unit con nection points Make field power connections directly to line con nection pressure lugs only Connect field power supply conductors to LINE side terminals when the switch enclosure cover is removed to attach the handle Fig 22 Disconnect Switch and Unit UNITS WITHOUT FACTORY INSTALLED DISCONNECT When inst...

Page 16: ...ry installed conve nience outlets is now required by UL standards This cover cannot be factory mounted due its depth it must be installed at unit instal lation For shipment the convenience outlet is covered with a blank cover plate The weatherproof cover kit is shipped in the unit s control box The kit includes the hinged cover a backing plate and gasket 1 Remove the blank cover plate at the conve...

Page 17: ...l CodeArticle 210 Branch Cir cuits for use of convenience outlets Fuse On Power Type The factory fuse is a Bussman Fusetron 1 T 15 non renewable screw in Edison base type plug fuse Fig 26 Powered Convenience Outlet Wiring Duty Cycle The unit powered convenience outlet has a duty cycle limitation The transformer is intended to provide power on an intermittent basis for service tools lamps etc it is...

Page 18: ...t side panel Remove one of the two knockouts located on the bottom left side of the unit control box Use this hole for the control conduit UNITS WITHOUT THRU BASE CONNECTIONS ELEC TRICAL CONNECTIONS 1 Install power wiring conduit through side panel openings Install conduit between disconnect and control box 2 Install power lines to terminal connections as shown in Fig 23 on page 16 Voltage to comp...

Page 19: ...be directly connected to the thermostat and will require a junc tion box and splice at the thermostat Fig 31 Typical Low Voltage Control Connections Thermostat Wiring Units Without Thru Base Connection Kit Pass the thermostat control wires through the hole provided in the corner post then feed the wires through the raceway built into the corner post to the control box Pull the wires over to the te...

Page 20: ...ing both compressors run Fig 34 Defrost Control Board Location NOTES 1 Jumper for 1 3 seconds Factory Test The defrost interval timing is reduced by a factor of 0 1 seconds minute based on the positions of DIP switches SW1 and SW2 i e 90 minutes will be reduced to 9 seconds 2 Jumper for 5 20 seconds Forced Defrost Defrost runs for 30 seconds if DFT2 is open Table 3 50TCQ Defrost Board I O and Jump...

Page 21: ... DIP Switch Settings Defrost Board ELECTRIC HEATERS 50HCQ units may be equipped with field installed accessory elec tric heaters The heaters are modular in design with heater frames holding open coil resistance wires strung through ceramic insula tors line break limit switches and a control contactor One or two heater modules may be used in a unit Heater modules are installed in the compartment be...

Page 22: ... are necessary Single Point Boxes without Fuses Refer to accessory heater and single point box installation instruc tions for details on tap connections Fig 39 Typical Single Point Installation Low Voltage Control Connections Run the low voltage control leads from the heater module s VIO and BRN two of each if two modules are installed identify for Module 1 to the 4 pole terminal board TB4 located...

Page 23: ...23 Fig 41 Electro Mechanical Control Wiring 208 230v 460v ...

Page 24: ...24 Fig 42 Electro Mechanical Control Wiring 575v ...

Page 25: ...25 Fig 43 Electro Mechanical Power Wiring 208 230 1 60 ...

Page 26: ...26 Fig 44 Electro Mechanical Power Wiring 208 230 3 60 ...

Page 27: ...27 Fig 45 Electro Mechanical Power Wiring 460 3 60 ...

Page 28: ...28 Fig 46 Electro Mechanical Power Wiring 575 3 60 ...

Page 29: ...29 Fig 47 PremierLink Wiring Schematic 208 230 460v ...

Page 30: ...30 Fig 48 PremierLink Wiring Schematic 575v ...

Page 31: ...31 Fig 49 RTU Open System Control Wiring ...

Page 32: ...ovides status for normal operation setup parameters checkout tests and alarm and error conditions with a 2 line 16 character LCD display and four button keypad Electrical Rated Voltage 20 to 30 vac RMS 50 60 Hz Transformer 100 va maximum system input Nominal Power Consumption at 24 vac 60 Hz 11 5 VA without sensors or actuators Relay Digital Output Rating at 30 vac maximum power from Class 2 input...

Page 33: ... Sensor Input e g CO2 sensor IAQ COM COM Air Quality Sensor Common IAQ 24V 24 vac Air Quality Sensor 24 vac Source ACT 2 10 2 10 vdc Damper Actuator Output 2 10 vdc ACT COM COM Damper Actuator Output Common ACT 24v 24 vac Damper Actuator 24 vac Source NA AUX2 OCC E GND EXH1 AUX1 O Y2 Y1 Y2 O Y1 O C R 50048848 002 Rev A NA A2 OCC EX A1 Y2I Y2O Y1I Y1O C R MAT MAT OAT OAT S BUS S BUS IAQ 2 10 IAQCOM...

Page 34: ...20 Controller Navigation Buttons To use the keypad when working with Setpoints System and Ad vanced Settings Checkout tests and Alarms 1 Navigate to the desired menu 2 Press the Enter button to display the first item in the currently displayed menu 3 Use the and buttons to scroll to the desired parameter 4 Press the Enter button to display the value of the cur rently displayed item 5 Press the but...

Page 35: ...COND STAGE COOLING DEMAND Y2 IN Y2 I signal from space thermostat or unitary controller for second stage cooling ON 24 vac on terminal Y2 I OFF 0 vac on terminal Y2 I COOL Y2 OUT OFF ON OFF SECOND STAGE COOLING RELAY OUTPUT Cool Stage 2 Relay Output to mechanical cooling Y2 OUT terminal MA TEMP _ _ _ F or _ _ _ C 40 F to 150 F 40 C to 66 C SUPPLY AIR TEMPERATURE Cooling Mode Displays value of meas...

Page 36: ...ow the set point the Y1 O and Y2 O will not be energized on the controller DRYBLB SET 63 F 17 C 48 F to 80 F 9 C to 27 C increment by 1 F OA DRY BULB TEMPERATURE CHANGEOVER SETPOINT Dry bulb set point will only appear if using dry bulb changeover Set point determines where the economizer will assume outdoor air temperature is good for free cooling e g at 63 F unit will economize at 62 F and below ...

Page 37: ...the capacity of the RTU The value is found on the nameplate label for the specific unit AUX1 OUT NONE NONE ERV EXH2 SYS Select OUTPUT for AUX1 O relay NONE not configured output is not used ERV Energy Recovery Ventilator EXH2 second damper position 24 vac out for second exhaust fan SYS use output as an alarm signal OCC INPUT INPUT or ALWAYS OCCUPIED MODE BY EXTERNAL SIGNAL When using a setback the...

Page 38: ...on damper to the full open position Exhaust fan contacts enable during the DAMPER OPEN test Make sure to pause in the mode to allow exhaust contacts to energize due to the delay in the system DAMPER CLOSE N A N A Positions damper to the fully closed position CONNECT Y1 O N A N A Closes the Y1 O relay Y1 O CONNECT Y2 O N A N A Closes the Y2 O relay Y2 O CONNECT AUX1 O N A N A Energizes the AUX outp...

Page 39: ...R N A N A ACTUATOR ERROR Actuator has failed or become disconnected check for stall over voltage under voltage and actuator count Replace actuator if damper is movable and supply voltage is between 21 6 V and 26 4 V Check actuator count on STATUS menu FREEZE ALARM N A N A Check if outdoor temperature is below the LOW Temp Lockout on set point menu Check if Mixed air temperature on STATUS menu is b...

Page 40: ...VENTILATION DCV OUTSIDE AIR GOOD TO ECONOMIZE Y1 I Y2 I FAN SPEED Y1 O Y2 O OCCUPIED UNOCCUPIED Below CO2 set No Off Off High 0 v Off 0 v Off VENTMIN Closed On Off High 24 v On 0 v Off VENTMIN Closed On On High 24 v On 24 v On VENTMIN Closed Yes Off Off High 0 v Off 0 v Off VENTMIN Closed On Off High 0 v Off 0 v Off VENTMIN to Full Open Closed to Full Open On On High 24 v On 0 v Off VENTMIN to Ful...

Page 41: ...omizing is available When all of the OA conditions are above the selected boundary the conditions are not good to economize and the mode is set to NO Figure 55 shows the 5 current boundaries There is also a high lim it boundary for differential enthalpy The high limit boundary is ES1 when there are no stages of mechanical cooling energized and HL high limit when a compressor stage is energized Tab...

Page 42: ...the Enter button to start the test The unit pauses and then displays IN PROGRESS When the test is complete DONE appears 4 When all desired parameters have been tested press the Menu Up button to end the test The Checkout tests can all be performed at the time of installation or at any time during the operation of the system as a test that the system is operable TROUBLESHOOTING Alarms The economize...

Page 43: ...nit terminal board may be necessary to complete the unit and smoke detector configuration to meet project requirements Units equipped with factory optional return air smoke detectors require a relocation of the sensor module at unit installation See Fig 56 for the as shipped location COMPLETING RETURN AIR SMOKE SENSOR INSTALLATION 1 Unscrew the two screws holding the return air smoke detector asse...

Page 44: ... IV wiring External occupan cy control is managed through a connection on the Controls Con nections 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 Cut jumper JMP 2 to complete the installation Step 13 Install Accessories Available accessories include Roof curb Thru bas...

Page 45: ...and Start Up This completes the mechanical installation of the unit Refer to the unit s Service Manual for detailed Pre Start and Start Up instruc tions Download the latest versions from HVAC Partners www hvacpartners com Typical Unit Piping Each heat pump refrigeration system includes a compressor accu mulator reversing valve dual function outdoor coil with vapor header check valve cooling liquid...

Page 46: ...nd 5 ton units Accurater 3 and 4 ton units only Acutrol COMPRESSOR ACCUMULATOR HPS Check Valve Schematic shown in Heating Mode Table 16 Cooling Mode each circuit COMPONENT STATUS POSITION Reversing Valve Energized Check Valve A Closed Check Valve B Open Check Valve C Closed Check Valve D Open Table 17 Heating Mode each circuit COMPONENT STATUS POSITION Reversing Valve De energized Check Valve A Op...

Page 47: ...rminals are tight Y N _____ Check that indoor air filters are clean and in place Y N _____ Check that outdoor air inlet screens are in place Y N _____ Verify that unit is level Y N _____ Check fan wheels and propeller for location in housing orifice and verify setscrew is tight Y N _____ Verify that fan sheaves are aligned and belts are properly tensioned Y N _____ Verify that scroll compressors a...

Page 48: ... temperature _______________ F D Liquid line temperature at outlet or reheat coil _______________ F E Confirm correct rotation for compressor Y N _____ F Check for correct ramp up of outdoor fan motor as condenser coil warms Y N _____ 4 Check unit charge per charging chart Y N _____ 5 Switch unit to high latent mode sub cooler by closing humidistat with Y1 closed Y N _____ OBSERVE A Reduction in s...

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