7
STARTING THE FURNACE
1. Make sure the filter is clean and in place.
2. Make sure the vent system is properly installed.
3. Set the thermostat to the lowest setting.
4. Close the manual gas valve outside the furnace.
5. Turn off all electric to the furnace.
6. Remove the door from the burner compartment.
7. Turn the gas valve knob to the OFF position. See Figure 3
for gas valve knob location.
8. Wait 5 minutes. If there is any smell of gas, see “WHAT
TO DO IF YOU SMELL GAS” on page 3.
9. Turn the gas valve knob to the ON position.
10. Turn on all electric to the furnace.
11. Open the manual gas valve.
12. Turn the thermostat back up to force ignition.
13. Observe operation, including burners. If burners fail to ignite,
call a licensed HVAC technician.
14. Replace the door on the burner compartment.
SHUTTING DOWN THE FURNACE
IMPORTANT! IF YOU NEED TO SHUT DOWN YOUR
FURNACE FOR SERVICE OR MAINTENANCE, SHUT OFF
THE GAS VALVE TO THE FURNACE BEFORE TURNING
OFF THE ELECTRICAL SERVICE.
If your installation has a manual gas shutoff valve on the gas
supply pipe, shut this off, then shut off the electric to the furnace.
1. Set the thermostat to the lowest setting.
2. Close the manual gas valve outside the furnace.
3. Turn electric to the furnace off.
4. Open the door to the burner compartment.
5. Turn the gas valve knob to the OFF position.
6. Replace the door on the burner Compartment.
STARTUP & SHUTDOWN
Figure 3. Gas Valves - Top View
IN
ON
OFF
Inlet
Pressure
Tap
Inlet
Pressure
Tap
Manifold
Pressure
Tap
Manifold
Pressure
Tap
2-STAGE GAS VALVES
Model VR8205Q2381
Model VR9205Q1028
ON / OFF
Knob
ON / OFF
Switch
HI Input
Adjusting
Screw
Lo Input
Adjusting
Screw
HI Input
Adjusting
Screw
Lo Input
Adjusting
Screw
ON
OFF
IN
N
AT NA
T
LP LP
Other side
of cap
Pressure
Regulator
Cap
Manifold
Pressure
Plug
Inlet
Pressure
Plug
ON/OFF
Knob
OR
SINGLE STAGE GAS VALVE
