Manuals / Goodman Mfg / Household Appliance / Furnace

Goodman Mfg VC8 Start-Up Procedure And Adjustment, Gas Valve On/Off Selector Switch

Models: VC8

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Gas Valve On/Off

START-UP PROCEDURE AND ADJUSTMENT

INLET

OUTLET

Gas Valve On/Off

Selector Switch

White-Rodgers Model 36G54 (Two-Stage)

Open to			Manometer
Atmosphere			Hose
Atmosphere
			Outlet	High Fire Regulator
			Outlet	Adjust
			Pressure Boss			Regulator
						Vent
						Vent

Open to	Manometer
Atmosphere	Hose

i

Manometer

Common

Terminal(C)

High Fire Coil

Terminal (HI)

Low Fire Coil

Terminal (LO)

Inlet Pressure Tap 1/8 NPT

Outlet Pressure Tap 1/8 NPT

	Inlet
	Pressure
	Boss	High Fire Coil
	Manometer	High Fire Coil
	Manometer	Terminal (HI)
		Terminal (HI)
		On/Off Switch

Low Fire

Regulator

Adjust

Coaxial Coil

Terminal (M)

Common

Terminal(C)

Honeywell Model VR9205 Connected to Manometer

1.Turn OFF gas to furnace at the manual gas shutoff valve external to the furnace.

2.Connect a calibrated water manometer (or appropriate gas pressure gauge) at either the gas valve inlet pressure boss or the gas piping drip leg. See Honeywell VR9205 gas valve figure or White-Rodgers 36G54 gas valve figure for location of inlet pressure boss.

White-Rodgers Model 36G54 Connected to Manometer

High Fire

Regulator

Regulator

Adjust

Vent

Gas Valve On/Off

Selector SwitchLow Fire

Regulator

Adjust

Honeywell Model VR9205 (Two-Stage)

NOTE: If measuring gas pressure at the drip leg or Honeywell VR9205 gas valve, a field-supplied hose barb fitting must be installed prior to making the hose connection. If using the inlet pressure boss on the White-Rodgers 36G54 gas valve, then use the 36G Valve Pressure Check Kit, Goodman Part No. 0151K00000S.

3.Turn ON the gas supply and operate the furnace and all other gas consuming appliances on the same gas supply line.

4.Measure furnace gas supply pressure with burners firing. Supply pressure must be within the range specified in the Inlet Gas Supply Pressure table.

Inlet Gas Supply Pressure

Natural Gas	Minimum: 5.0" w.c.	Maximum:10.0" w.c.
Propane Gas	Minimum: 11.0" w.c.	Maximum:13.0" w.c.

If supply pressure differs from table, make the necessary ad- justments to pressure regulator, gas piping size, etc., and/or consult with local gas utility.

5.Turn OFF gas to furnace at the manual shutoff valve and disconnect manometer. Reinstall plug before turning on gas to furnace.

6.Turn OFF any unnecessary gas appliances stated in step 3.

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Goodman Mfg VC8 instruction manual Start-Up Procedure And Adjustment, Gas Valve On/Off Selector Switch

Contents

ATTENTION INSTALLING PERSONNEL Installer Affix all manuals adjacent to the unitCATEGORY Table of Contents Table of Contents SAFETY PRECAUTIONS CARBON MONOXIDE POISONING HAZARDWHAT TO DO IF YOU SMELL GAS PRODUCT APPLICATION LOCATION REQUIREMENTS AND CONSIDERATIONS PRODUCT DESCRIPTIONPRODUCT APPLICATION LOCATION REQUIREMENTS AND CONSIDERATIONS American National Standards InstituteNational Fire Protection Association CSA InternationalIf the furnace is used in connection with a cooling unit, install the furnace upstream or in parallel with the cooling unit coil. Premature heat exchanger failure will result if the cooling unit coil is placed ahead of the furnace LOCATION REQUIREMENTS AND CONSIDERATIONSCOMBUSTION & VENTILATION CATEGORY MINIMUM VENT CATEGORY I VENTING VERTICAL VENTINGMODEL UPFLOW13.Restore power to furnace If the chimney does not meet these termination requirements, but all other requirements in the checklist can be met, it may be possible for a mason to extend the chimney. If this will not be practical, see Fix aCrown leaning bBricks missing cMortar missing ELECTRICAL CONNECTIONS HIGH VOLTAGE HIGH VOLTAGEHIGH VOLTAGE ELECTRICAL CONNECTIONSHIGH VOLTAGE IMPORTANT NOTEELECTRICAL CONNECTIONS To install/connect a dehumidistat ELECTRICAL CONNECTIONSHIGH VOLTAGE GAS SUPPLY AND PIPINGGAS SUPPLY AND PIPING CIRCULATING AIR AND FILTERS GAS SUPPLY AND PIPING General Furnace LayoutPropane Gas Installation Typ CIRCULATING AIR AND FILTERSCIRCULATING AIR AND FILTERS START-UP PROCEDURE AND ADJUSTMENT START-UP PROCEDURE AND ADJUSTMENT START-UP PROCEDURE AND ADJUSTMENT2.Turn off the electrical power to the furnace START-UP PROCEDURE AND ADJUSTMENT Gas Valve On/Off Selector SwitchSTART-UP PROCEDURE AND ADJUSTMENT 2.Turn off all electrical power to the systemSTART-UP PROCEDURE AND ADJUSTMENT START-UP PROCEDURE AND ADJUSTMENT The cooling system manufacturer’s instructions must be checked for required air flow. Any electronic air cleaners or other devices may require specific air flows, consult installa- tion instructions of those devices for requirementsSTART-UP PROCEDURE AND ADJUSTMENT Example The *MVC80704BX is set for 990 CFM on cooling, the “ADJUST” is set to “+” plus. The four heating speeds available are “A Plus”, “B Plus”, “C Plus”, and “D Plus”. “A Plus” has a rise of 38F for both stages which is within the 20-50Frise range for the *MVC80704BX . This setting will keep electrical consumption to a minimum. Set the “Heat” speed DIP switches to “A”COMFORTNET SYSTEM COMFORTNET SYSTEMCOMFORTNET SYSTEM b thermostat “R” 24 VAC hot and “C” 24 VAC commonCOMFORTNET SYSTEM Touch theStartup Procedure and Adjustment COMFORTNET SYSTEMIndication for Display Only not User Modifiable Submenu ItemCOMFORTNET SYSTEM Submenu ItemUser Modifiable Options CommentsOPERATIONAL CHECKS & SAFETY CIRCUIT DESCRIPTION NORMAL SEQUENCE OF OPERATIONOPERATIONAL CHECKS & SAFETY CIRCUIT DESCRIPTION OPERATIONAL CHECKSTROUBLESHOOTING & MAINTENANCE SAFETY CIRCUIT DESCRIPTIONTROUBLESHOOTING HIGH VOLTAGEMAINTENANCE MISCELLANEOUSBEFORE LEAVING AN INSTALLATION REPAIR AND REPLACEMENT PARTSMISCELLANEOUS TROUBLESHOOTING CHART CodeTROUBLESHOOTING CHART MessageCode TROUBLESHOOTING CHARTMessage TROUBLESHOOTING CHART MessageCode TROUBLESHOOTING CHARTMessage CodeSTATUS CODES Speed Selection Dip Switches DIP SWITCHESAIR FLOW DATA MVC8 AA WIRING DIAGRAM SERVICING OR INSTALLING THISUNIT MAYBE PRESENT. FAILURE TO DO SOMVC8 AB, *DVC8 AA WIRING DIAGRAM 0140F00660REV. A UNITGoodman Manufacturing Company, L.P 5151 San Felipe, Suite 500, Houston, TX2009-2010Goodman Manufacturing Company, L.P