Manuals / Carrier / Household Appliance / Heat Pump

Carrier 50HCQA Electric Heaters, Field Control Wiring Raceway, Typical Access Panel Location

Models: 50HCQA

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Fig. 22 - Field Control Wiring Raceway

RACEWAY

HOLE IN END PANEL (HIDDEN)

C08027

Fig. 22 - Field Control Wiring Raceway

Electric Heaters

50HCQ units may be equipped with field-installed accessory electric heaters. The heaters are modular in design, with heater frames holding open coil resistance wires strung through ceramic insulators, 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 below the indoor (supply) fan outlet. Access is through the indoor access panel. Heater modules slide into the compartment on tracks along the bottom of the heater opening. See Fig. 23, Fig. 24 and Fig. 25.

DISCONNECT MOUNTING

LOCATION

UNIT BLOCK-OFF	OUTDOOR	INDOOR
UNIT BLOCK-OFF	OUTDOOR	ACCESS
PANEL	ACCESS PANEL	PANEL
		C08133

Fig. 23 - Typical Access Panel Location

Not all available heater modules may be used in every unit. Use only those heater modules that are UL listed for use in a specific size unit. Refer to the label on the unit cabinet for the list of approved heaters.

Unit heaters are marked with Heater Model Numbers. But heaters are ordered as and shipped in cartons marked with a corresponding heater Sales Package part number. See Table 2 for correlation between heater Model Number and Sales Package part number.

NOTE: The value in position 9 of the part number differs between the sales package part number (value is 1 or 3) and a bare heater model number (value is 0).

50HCQA

Table 2 – Heater Model Number

Bare Heater Model Number

C

R

H

E

A

T

E

R

0

0

1

A

0

0

Heater Sales Package PNO

Includes:

Bare Heater

C

R

H

E

A

T

E

R

1

0

1

A

0

0

Carton and packing materials

Installation sheet

DISCONNECT	EMT OR RIGID CONDUIT	SINGLE	CENTER	MANUAL RESET
MOUNTING	(FIELD-SUPPLIED)	POINT BOX	POST	LIMIT SWITCH
LOCATION				HEATER
				HEATER
				COVERS

		SINGLE POINT
MAIN	BRACKET AND	BOX	HEATER	HEATER	HEATER
CONTROL CONDUIT		MOUNTING	MODULE	MODULE	MOUNTING
BOX	DRIP BOOT	SCREW	(LOCATION 1) (LOCATION 2) BRACKET

CONTROL WIRE TERMINAL BLOCK

C08134

Fig. 24 - Typical Component Location

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Carrier 50HCQA Electric Heaters, Field Control Wiring Raceway, Typical Access Panel Location, Heater Model Number

Contents

with Puronr R---410ARefrigerant Sizes TABLE OF CONTENTSInstallation Instructions 50HCQA Single Package Rooftop Heat PumpELECTRICAL SHOCK HAZARD SAFETY CONSIDERATIONSUNIT OPERATION AND SAFETY HAZARD 50HCQAC10230 50HCQAVertical Connections / Economizer Horizontal Connections / EconomizerStep 1 - Plan for Unit Location INSTALLATIONFig. 2 - Service Clearance Dimensional Drawing Jobsite SurveyFrame-mountedinstallation Step 2 - Plan for Sequence of Unit InstallationCurb-mountedinstallation Pad-mountedinstallation50HCQA Fig. 3 - Roof Curb DetailsFig. 4 - Unit Leveling Tolerances For Units with Accessory Electric HeatersStep 5 - Field Fabricate Ductwork Step 6 - Rig and Place UnitFig. 5 - Rigging Details Positioning on Curb Fig. 6 - Horizontal Conversion Panels50HCQA Fig. 8 - Economizer Wiring Step 8 - Install Outside Air HoodEconomizer Hood Removal and Setup Fig. 7 - Typical Access Panel LocationsFig. 11 - Economizer Hood Construction Fig. 12 - Economizer Filter InstallationFig. 10 - Indoor Coil Access Panel Relocation Economizer Hood and Two-PositionHoodStep 10 - Make Electrical Connections Field Power SupplyFig. 15 - Disconnect Switch and Unit Units Without Factory-InstalledDisconnectUnits With Disconnect Option Units with Factory-InstalledDisconnectFig. 16 - Power Wiring Connections Units Without Disconnect Option50HCQA Fig. 18 - Weatherproof Cover InstallationFig. 19 - Powered Convenience Outlet Wiring Factory-Option Thru-BaseConnectionsFig. 20 - Thru-BaseConnection Fittings Field Control WiringUnit without Thru-BaseConnection Kit Heat Anticipator SettingsTable 2 - Heater Model Number Fig. 22 - Field Control Wiring RacewayFig. 23 - Typical Access Panel Location Electric Heaters50HCQA Fig. 25 - Typical Module InstallationFig. 26 - Typical Single Point Installation Single Point Boxes and Supplementary Fuse50HCQA Supply Air Temperature SAT SensorPremierLinkt Factory-Option Fig. 28 - PremierLink ControllerFig. 30 - Typical PremierLink Wiring Schematic 50HCQAC10227 Field Connections Outdoor Air Temperature OAT SensorSpace Temperature SPT Sensors Fig. 31 - T-55Space Temperature Sensor WiringJ4-4 SPACECTB THERMOSTAT THERMOSTAT R RTB1PL G2 J4-12 Y1 4 J4-10 Y2 6 J4-8 W1 8 J4-6INPUT SIGNAL Table 4 - Space Sensor ModeTable 5 - Thermostat Mode INPUT SIGNALEconomizer Controls Configure the Unit for Thermostat ModeWiring Fig. 36 - Enthalpy Switch 33CSENTHSW ConnectionsFig. 38 - Indoor/Outdoor Air Quality CO2 Sensor 33ZCSENCO2 - Typical Wiring DiagramOutdoor Air Quality Sensor PNO 33ZCSENCO2 plus weatherproof enclosureFig. 43 - PremierLink Wiring Fan Pressure Switch Filter Status SwitchFig. 42 - PremierLink Filter Switch Connection Supply Fan Status SwitchFig. 46 - PremierLink CCN Bus Connections Connecting CCN busTable 6 - Recommended Cables Table 7 - Color Code Recommendations50HCQA RTU-MPControl SystemFig. 47 - RTU-MP Multi-ProtocolControl Board Fig. 48 - 50HCQ Control Box Component LocationsC10229 50HCQA50HCQA Table 8 - RTU-MPController Inputs and OutputsSupply Air Temperature SAT Sensor Outdoor Air Temperature OAT SensorFig. 51 - RTU-MP T-56Sensor Connections C08461 Fig. 52 - Space Temperature Sensor Typical Wiring33ZCT59SPT Fig. 50 - RTU-MP T-55Sensor ConnectionsFig. 54 - RTU-MP /Outdoor CO2 Sensor Connecting Discrete InputsFig. 53 - RTU-MP /Indoor CO2 Sensor 33ZCSENCO2 ConnectionsGeneral Communication Wiring - ProtocolsFig. 55 - RTU-MPPower Exhaust Connections Fig. 56 - RTU-MPSW3 Dip Switch Settings50HCQA Local AccessRTU-MPTroubleshooting Fig. 57 - BACview6 Handheld ConnectionsController Smoke DetectorsTable 9 - LEDs SystemLocation Return Air without Economizer Fig. 58 - Controller AssemblySmoke Detector Locations Supply AirSampling Tube See “Completing Installation of Return Air SmokeFlexible Exhaust Tube Return AirHIGH 50HCQANOTE See page 42 for table legend and notes HIGHHIGH 50HCQAUNIT DD---STDHIGH 50HCQADD---STD HIGHHIGH 50HCQAUNIT 208/230HIGH 50HCQAUNIT 208/230HIGH 50HCQA208/230 HIGHLegend and Notes for Table Step 11 - Adjust Factory-InstalledOptionsFig. 65 - EconoMi$ert IV Wiring EconoMi$er IV Occupancy SwitchStep 12 - Install Accessories Pre-Startand Start-Up50HCQA Replaces NEW 50HCQACatalog No 50HCQ---01SI Edition Date 04/10