Gas Heat Start-Up - Lennox LCH036 Installation Instructions Manual

Gas Heat Start-Up (Gas Units)
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING
Electric shock hazard. Can cause injury
or death. Do not use this unit if any part
has been under water. Immediately call
a qualified service technician to inspect
the unit and to replace any part of the
control system and any gas control
which has been under water.
WARNING
Danger of explosion. Can cause injury
or product or property damage. If over­
heating occurs or if gas supply fails to
shut off, shut off the manual gas valve
to the appliance before shutting off
electrical supply.
WARNING
Electric shock hazard. Can cause
injury or death. Before attempting to
perform any service or maintenance,
turn the electrical power to unit OFF at
disconnect switch(es). Unit may have
multiple power supplies.
WARNING
SMOKE POTENTIAL
The heat exchanger in this unit could be a source of
smoke on initial firing. Take precautions with re­
spect to building occupants and property. Vent ini­
tial supply air outside when possible.
BEFORE LIGHTING smell all around the appliance area
for gas. Be sure to smell next to the floor because some
gas is heavier than air and will settle on the floor.
Use only your hand to push in or turn the gas control knob.
Never use tools. If the knob will not push in or turn by
hand, do not try to repair it, call a qualified service
technician. Force or attempted repair may result in a fire
or explosion.
WARNING
Danger of explosion. Can cause injury or
death. Do not attempt to light manually.
Unit has a direct spark ignition system.
This unit is equipped with an automatic spark ignition
system. There is no pilot. In case of a safety shutdown,
move thermostat switch to OFF and return the thermostat
switch to HEAT to reset ignition control.
A-Placing Unit In Operation
Danger of explosion and fire. Can cause
injury or product or property damage.
You must follow these instructions
exactly.
Gas Valve
VR8205Q/VR8305Q and White Rodgers 36H54 (figure
27 and 28).
WHITE RODGERS 36H54 GAS VALVE
INLET
PRESSURE
TAP
GAS VALVE SWITCH SHOWN IN ON POSITION.
HONEYWELL VR8205Q/VR8305Q GAS VALVE
HIGH FIRE
ADJUSTMENT
INLET
PRESSURE
TAP
GAS VALVE KNOB IS SHOWN IN OFF POSITION.
1- Set thermostat to lowest setting.
2- Turn off all electrical power to appliance.
3- This appliance is equipped with an ignition device
which automatically lights the burner. Do not try to
light the burner by hand.
4- Open or remove the heat section access panel.
Page 34
WARNING
Operation for
Two-Stage
HIGH FIRE
ADJUSTMENT
LOW FIRE
ADJUSTMENT
FIGURE 27
LOW FIRE
ADJUSTMENT
FIGURE 28
Honeywell
MANIFOLD
PRESSURE
TAP
MANIFOLD
PRESSURE
TAP