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Carrier 58MVP Appendix B, Appendix C, Isolation Circuits, Pressure Check Diagram, vSupply

Models: 58MVP

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Appendix B

Isolation Circuits

	FURNACE
THERMOSTAT	CONTROL	K1 –FIELD-SUPPLIED	FIELD-SUPPLIED
THERMOSTAT	BOARD
	BOARD
		24-VAC SPST RELAY	24-VAC (40VA)
			TRANSFORMER

R	K2 K1
K1

OUTDOOR

120VAC

	UNIT	R	R
W/W1	UNIT
W/W1		W	W/W1
		W	W/W1
Y/Y2	Y	Y	Y/Y2	K1
		G	G	K1
G		G	G

CCom

ComC

K1	FIELD-SUPPLIED	THERMOSTAT FURNACE	OUTDOOR
K2	24-VAC SPST RELAYS	CONTROL	UNIT
K2	24-VAC SPST RELAYS	BOARD
		BOARD
	A95097		A95098
	Fig. 5ÐIsolation of W/W1 and Y/Y2	Fig. 6ÐIsolation of Outdoor Unit with a Separate
	Thermostat Circuits	24-v Supply

Appendix C

Pressure Check Diagram

0-4 IN.

SLOPE GAGE

			A95050

UNIT SIZE (BTUH)	HIGH-PRESSURE SWITCH		LOW-PRESSURE SWITCH
UNIT SIZE (BTUH)	Make Point	Break Point	Make Point	Break Point
	Make Point	Break Point	Make Point	Break Point
40,000	1.81 in. wc max	1.63 in. wc ± 0.05	0.75 in. wc max	0.60 in. wc ± 0.05
60,000
80,000	1.81 in. wc max	1.63 in. wc ± 0.05	0.95 in. wc max	0.80 in. wc ± 0.05
100,000	1.81 in. wc max	1.63 in. wc ± 0.05	0.95 in. wc max	0.80 in. wc ± 0.05
100,000
120,000

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Carrier 58MVP Appendix B, Appendix C, Isolation Circuits, Pressure Check Diagram, ÐIsolation of W/W1 and Y/Y2, vSupply

Contents

Troubleshooting Guide SAFETY CONSIDERATIONSINDEX INSTRUCTIONSEXAMPLE Start Here Section Step 1ÐSelf-TestModeStep 2ÐHeating Mode Step 3ÐHeating ModeÐTwo StageStep 5ÐCooling Mode Step 6ÐHeat Pump ModeFig. 1ÐVariable Speed Furnace Control Step 7ÐContinuous Fan Mode1.Operating with continuous fan only Step 8ÐComponent TestFig. 3ÐWith DE Connection Fig.2ÐWithout DE ConnectionStep 9ÐBypass Humidifier Mode Step 11ÐZone ModeSTEP SERVICE LED CODESTATUS RED LED1 ONCOMPONENT TEST →Fig. 4ÐService Label/Fault Code InstructionsSTATUS CODE EXAMPLE Humidifier will not be turned onSTEP STEP proceeding to next step STEP Fault Code Fault Codemotor MTR2 Fault Code STEPNOTE Blower access panel must be in place WARNING DO NOT OVERTIGHTENFault Code Fault CodeSTEP Fault Code Fault Code·Thermostat call with SW-1ON ·Thermostat call with SW-6ONFault Code Table 4ÐTwo-SpeedAC/HP Airflow Requirements CFMchassis ground? Fault Code ·LOW HEATtrol board Fault Code ·LOW HEATFault Code Is inducer blower wheel okay?INDEX Fault Code 14ÐIGNITION LOCKOUTFault Code Check burner orifice size and alignmentPage Fault Code STEPFault Code 0.55¬ RPMRPMhighlow¬Does fault occur again? Fault Code through 1 heating cycleCLEANUP AND START-UPINSTRUCTIONS Board Layout and Schematic Appendix AControl Center Wiring Schematic SCHEMATIC DIAGRAMPressure Check Diagram Appendix BAppendix C Isolation CircuitsQuick Motor Test Procedure Appendix DDoes blower wheel rub against blower housing? Page Appendix E OperationEXAMPLE AIR DELIVERY CURVE Ð Air Delivery Curves Air Delivery Curve ÐAir Delivery Curve Ð Air Delivery Curve ÐStatic Pressure Reading Location Diagrams Basement Ð Upflow ApplicationUpflow Total Static Pressure Reading Locations Closet Ð Downflow ApplicationAttic Ð Horizontal Application Duct Static Check Sheet Appendix F Quick Reference InformationPRESSURE SWITCH MAKE/BREAK POINTS POWER CHOKEAppendix G Thermostat Staging AlgorithmVARIABLE SPEED CONDENSING FURNACE ALGORITHM SERVICE TRAINING MaintenanceInstallation Overview Packaged Service Training

Appendix B

Isolation Circuits

Fig. 5ÐIsolation of W/W1 and Y/Y2

Fig. 6ÐIsolation of Outdoor Unit with a Separate

Thermostat Circuits

24-v Supply

Appendix C

Pressure Check Diagram

0-4 IN.