Manuals / Carrier / Household Appliance / Heat Pump

Carrier 50VT-A installation instructions

Models: 50VT-A

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O	T2 C C O	DFT						OF2	OF1
R	T1
W
2
Y
C	Y
SPEEDUP	P1
SPEEDUP	J1	P3	INTERVALTIMER	90	60 30	30 60	120
	DFT		OFF		QUIET SHIFT		ON
	Speedup					Quiet		Defrost interval
	Pins					Shift		DIP switches
									A08020

Fig. 19 - Defrost Control

50VT-- A

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Carrier 50VT-A installation instructions

Contents

SAFETY CONSIDERATIONS TABLE OF CONTENTSFig. 1 - Unit 50VT-A Installation InstructionsInstallation on older “G” series roof curbs RECEIVING AND INSTALLATIONINTRODUCTION Step 1 - Check Equipment50VT--A Fig. 2 - 50VT-A24-30Unit DimensionsA09410 50VT--A Fig. 3 - 50VT-A36-60Unit DimensionsA09411 LARGE CURB Fig. 4 - Roof Curb DimensionsUNIT PLACEMENT ON COMMON CURB 50VT--AStep 4 - Rig and Place Unit Fig. 5 - Rigging WeightsInspection Rigging/Lifting of Unit See FigCONFIGURING UNITS FOR DOWNFLOW VERTICAL DISCHARGE Step 5 - Select and Install DuctworkPERSONAL INJURY HAZARD Fig. 6 - Supply and Return Duct OpeningHigh-VoltageConnections Step 7 - Install Electrical ConnectionsStep 6 - Provide for Condensate Disposal Fig. 7 - Unit Leveling TolerancesControl Voltage Connections Special Procedures for 208-VOperationAccessory Electric Heaters Installation Standard ConnectionsTable 1 - Physical Data - Unit 50VT-A Fig. 11 - Typical InstallationINDOOR THERMOSTAT RETURN AIR FROM POWER SOURCE 50VT--AA11002 50VT--AA11001 50VT--AA11006 50VT AA11005 50VT--A50VT--A Fig. 14 - Connection Wiring DiagramA10195 50VT--A Fig. 14 Cont. - Ladder Wiring DiagramSTART-UP Step 2 - Start-UpAdjustmentsStep 1 - Check for Refrigerant Leaks Checking Cooling and Heating Control OperationIndoor Airflow and Airflow Adjustments Checking and Adjusting Refrigerant ChargeUNIT OPERATION HAZARD 50VT--ALCS – Loss of Charge Switch HPS - High Pressure SwitchContinuous Fan Operation AccuraterMetering De viceQuiet Shift Step 3 - Defrost ControlDefrost Fig. 16 - Interface Fan Board IFBUnit 50VT--AElectric Heat Pressure Drop Table in. W.C Small CabinetLarge Cabinet 50VT--AStep 1 - Air Filter MAINTENANCEIndoor Blower and Motor PERSONAL INJURY AND UNIT DAMAGE HAZARD50VT--A Fig. 18 - Cooling Charging Table-SubcoolingA09412 Page Fig. 21 - Unit Access Panels Step 4 - Electrical Controls and WiringStep 3 - Outdoor Fan Step 5 - Refrigerant CircuitStep 9 - Loss of Charge Switch Step 8 - Pressure SwitchesStep 10 - High-PressureSwitch Synthetic Roof Precautionary ProcedureSTART-UPCHECKLIST TROUBLESHOOTINGLoss of Charge Switch Step 13 - System Information50VT--A PURONR R-410AQUICK REFERENCE GUIDE50VT--A Table 10 - Troubleshooting ChartRemove and Store in Job Files TEMPERATURESI. PRELIMINARY INFORMATION MODEL NO PRESSURESCatalog No 50VT---09SI 50VT--AEdition Date 01/11 Replaces 50VT---08SI