Lennox G26Q2-50 - Page 21

Page 21
ON
OFF
HONEYWELL VR8205 SERIES GAS VALVE
GAS VALVE SHOWN IN OFF POSITION
WHITE RODGERS
36E GAS VALVE
GAS VALVE
SHOWN
IN OFF
POSITION
FIGURE 33
6 - White Rodgers 36E Gas Valve - Switch gas valve leĆ
ver to OFF. See figure 33.
Honeywell VR8205 Gas Valve - Turn knob on gas
valve clockwise
to OFF. Do not force. See figure
33.
7 - Wait five minutes to clear out any gas. If you then smell
gas, STOP! Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's instrucĆ
tions. If you do not smell gas go to next step.
8 - White Rodgers 36E Gas Valve - Switch gas valve lever
to ON.
Honeywell VR8205 Gas Valve - Turn knob on gas valve
counterclockwise
to ON. Do not force.
9 - Replace unit access panel.
10- Turn on all electrical power to unit.
11- Set thermostat to desired setting.
NOTE - When unit is initially started, steps 1 through 11
may need to be repeated to purge air from line.
NOTE - On initial start-up and when condensate trap is
dry, unit may turn itself off and on to allow condensate
trap to fill. This is normal operation.
12- If the furnace will not operate, follow the instructions
To Turn Off Gas To Unit" and call your service techniĆ
cian or gas supplier.
To Turn Off Gas To Unit
1 - Set thermostat to lowest setting.
2 - Turn off all electrical power to unit if service is to be perĆ
formed.
3 - Remove heat section access panel.
4 - On Honeywell VR8205 gas valves, turn knob on gas
valve clockwise
to OFF. For White Rodgers 36E
gas valves, move switch to OFF. Do not force.
5 - Replace the unit access panel.
Gas Pressure Adjustment
Gas Line Pressure
Check gas line pressure with unit firing at maximum rate. A
minimum of 4.5 inches w.c. (1.12kPa) for natural gas or 8.5
inches w.c. (2.11kPa) for LP/propane gas should be mainĆ
tained.
Gas Manifold Pressure
After line pressure has been checked and adjusted, check
regulator pressure. See table 6 for correct manifold presĆ
sures for LP/propane and natural gas at altitudes in a range
of 0 to 7500 feet (0 to 2248m).
TABLE 6
Unit (Fuel)
Manifold Pressure (outlet)
from 0 to 7500 ft. (0 to 2248m) above sea level
Natural 3.5" w.c. (.87 kPa)
L.P./Propane 7.5" w.c. (1.86 kPa)
WARNING
Do not set manifold pressure for LP/propane higher
than 7.5 inches w.c. (1.8kPa).
HONEYWELL GAS VALVE
GAS VALVE
CONTROL KNOB
OUTLET
PRESSURE
TAP
WIRING
TERMINALS
PRESSURE
REGULATOR
(UNDER CAP SCREW)
INLET
PRESSURE
TAP
OUTLET
BARBED
FITTING FOR
PRESSURE
SWITCH
HOSE
FIGURE 34
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