Page 15
UNIT START–UP
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING
Do not use this furnace if any part has been underĆ
water. Immediately call a qualified service techniĆ
cian to inspect the furnace and to replace any part
of the control system and any gas control which
has been under water.
WARNING
If overheating occurs or if gas supply fails to shut
off, shut off the manual gas valve to the appliance
before shutting off electrical supply.
CAUTION
Before attempting to perform any service or mainĆ
tenance, turn the electrical power to unit OFF at
disconnect switch.
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 techĆ
nician. Force or attempted repair may result in a fire or exĆ
plosion.
To place G20R furnace into operation:
G20R units are equipped with an intermittent pilot igniĆ
tion system. Do not attempt to manually light pilots on
these furnaces. Each time thermostat calls for heat, the
pilot will automatically light. The pilot goes out when
there is no demand for heat.
WARNING
If you do not follow these instructions exactly, a fire
or explosion may result causing property damage,
personal injury or loss of life.
Gas Valve Operation (Figures 19 & 20)
1-
STOP
! Read the safety information at the beginning of
this section.
2- Set thermostat to lowest setting. See figure 18.
3- Turn off all electrical power to appliance.
THERMOSTATS
FIGURE 18
4- This appliance is equipped with an ignition device
which automatically lights the pilot. Do
not
try to light
the pilot by hand.
5- Remove lower access panel.
6- On Honeywell VR8204 gas valves, turn knob on gas
valve clockwise
to
OFF
. Units with Robertshaw
7200 gas valve, depress lever and move to
OFF
posiĆ
tion. Do not force. See figures 19 and 20.
7- Wait fifteen (15) 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.
ON
OFF
FIGURE 19
HONEYWELL VR8204 SERIES GAS VALVE
GAS VALVE SHOWN IN OFF POSITION
GAS VALVE
SELECTOR
ARM
IN OFF
POSITION
ROBERTSHAW 7200 GAS VALVE
FIGURE 20
8- On Honeywell VR8204 gas valves, turn knob on gas
valve counterclockwise
to
ON
. Units with RobertĆ
shaw 7200 gas valve, depress lever and move to
ON
position. Do not force.
9- Replace lower access panel.
10-Turn on all electrical power to unit.
