Lennox International Inc G61MP Safety or Emergency Shutdown, Extended Period Shutdown, Gas Piping

WHITE RODGERS 36E SERIES GAS VALVE
	HIGH FIRE
	MANIFOLD
	PRESSURE
	ADJUSTMENT
	ON SIDE
	(under cap)
	MANIFOLD
	PRESSURE
	TAP ON SIDE
INLET PRESSURE	LOW FIRE MANIFOLD
TAP ON SIDE	PRESSURE ADJUSTMENT
	ON SIDE (under cap)
GAS VALVE SHOWN IN OFF POSITION

	FIGURE 36
8 −	Honeywell VR8205 Gas Valve − Turn knob on gas
	valve counterclockwise	to ON. Do not force.
	White Rodgers 36E Gas Valve − Switch gas valve lever
	to ON. See figure 36 for the White Rodgers 36E
	valve.
9 −	Replace the upper access panel.
10−	Turn on all electrical power to to the unit.

11− Set the thermostat to desired setting.

NOTE − When unit is initially started, steps 1 through 11 may need to be repeated to purge air from gas line.

12−	If the appliance will not operate, follow the instructions
	urning Off Gas to Unit" and call your service techni-
	cian or gas supplier.
Turning Off Gas to Unit
1 −	Set the thermostat to the lowest setting.
2 −	Turn off all electrical power to the unit if service is to be
	performed.
3 −	Remove the upper access panel.
4 −	Honeywell VR8205 Gas Valve − Turn knob on gas
	valve clockwise	to OFF. Do not force.
	White Rodgers 36E Gas Valve − Switch gas valve le-
	ver to OFF.
5 −	Replace the upper access panel.

C−Safety or Emergency Shutdown

Turn off unit power. Close manual and main gas valves.

D−Extended Period Shutdown

Turn off thermostat or set to mode. Close

all gas valves (both internal and external to unit) to guaran- tee no gas leak into combustion chamber. Turn off power to unit. All access panels and covers must be in place and se- cured.

IV−HEATING SYSTEM SERVICE CHECKS A−C.S.A. Certification

All units are C.S.A. (formally A.G.A. and C.G.A. combined) design certified without modifications. Refer to the G61MP Installation Instruction.

B−Gas Piping

CAUTION

If a flexible gas connector is required or allowed by the authority that has jurisdiction, black iron pipe shall be installed at the gas valve and extend outside the furnace cabinet.

WARNING

Do not exceed 600 in−lbs (50 ft−lbs) torque when attaching the gas piping to the gas valve.

Gas supply piping should not allow more than 0.5"W.C. drop in pressure between gas meter and unit. Supply gas pipe must not be smaller than unit gas connection.

Compounds used on gas piping threaded joints should be resistant to action of liquefied petroleum gases.

C−Testing Gas Piping

IMPORTANT

In case emergency shutdown is required, turn off the main shut-off valve and disconnect the main power to unit. These controls should be properly labeled by the installer.

When pressure testing gas lines, the gas valve must be dis- connected and isolated. Gas valves can be damaged if subjected to more than 0.5psig (14" W.C.). See figure 37.

GAS PIPING TEST PROCEDURE

MANUAL MAIN SHUT−OFF VALVE

CAP

GAS VALVE

FIGURE 37

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