Placement And Installation; Preliminary And Seasonal Checks; Heating Start-Up; Start Up - Lennox G60UHV Service Manual

II−PLACEMENT AND INSTALLATION
Make sure unit is installed in accordance with installation
instructions and applicable codes.
III−START-UP
A−Preliminary and Seasonal Checks
1 − Inspect electrical wiring, both field and factory installed
for loose connections. Tighten as required.
2 − Check voltage at disconnect switch. Voltage must be
within range listed on the nameplate. If not, consult the
power company and have voltage condition corrected
before starting unit.
B−Heating Start-Up
WARNING
Shock and burn hazard.
G60UHV(X) units are equipped with a hot surface
ignition system. Do not attempt to light manually.
1 − STOP! Read the safety information at the beginning of
this section.
2 − Set the thermostat to the lowest setting.
3 − Turn off all electrical power to the unit.
4 − This furnace is equipped with an ignition device which
automatically lights the burners. Do not try to light the
burners by hand.
5 − Remove the upper access panel.
6 − White Rodgers 36E Gas Valve − Switch gas valve le-
ver to OFF. See figure 18.
Honeywell VR8205 Gas Valve − Turn knob on gas
valve clockwise to OFF. Do not force. See figure
19.
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 instruc-
tions. If you do not smell gas go to next step.
WHITE RODGERS 36E SERIES GAS VALVE
INLET PRESSURE
TAP ON SIDE
GAS VALVE SHOWN IN OFF POSITION
FIGURE 18
HIGH FIRE
MANIFOLD
PRESSURE
ADJUSTMENT
ON SIDE
(under cap)
MANIFOLD
PRESSURE
TAP ON SIDE
LOW FIRE MANIFOLD
PRESSURE ADJUSTMENT
ON SIDE (under cap)
HONEYWELL VR8205 Series Gas Valve
HIGH FIRE
ADJUSTMENT
SCREW
(under cap)
lOW FIRE
ADJUSTMENT
SCREW
(under cap)
GAS VALVE SHOWN IN OFF POSITION
INLET PRESSURE TAP
8 − White Rodgers 36E Gas Valve − Switch gas valve lever
to ON. See figure 18.
Honeywell VR8205 Gas Valve − Turn knob on gas
valve counterclockwise
figure 19.
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.
Turning Off Gas To Unit
1 − Set thermostat to lowest setting.
2 − Turn off all electrical power to unit if service is to be per-
formed.
3 − Remove access panel.
4 − Switch lever on White Rodgers gas valve to OFF; turn
knob on Honeywell valve clockwise
force.
5 − Replace 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 UNOCCUPIED" 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.
Page 32
MANIFOLD
PRESSURE
TAP
FIGURE 19
to ON. Do not force. See
to OFF. Do not