Goodman GMVM Service Instructions Manual page 49

OPERATION
F O
URNACE PERATION
Purge gas lines of air prior to startup. Be sure not to purge lines
into an enclosed burner compartment.
Check for leaks using an approved chloride-free soap and water
solution, an electronic combustible gas detector, or other ap-
proved method. Verify that all required kits (propane gas, etc.)
have been appropriately installed.
F S
URNACE TARTUP
1. Close the manual gas shutoff valve external to the fur-
nace.
2. Turn off the electrical power to the furnace.
3. Set the room thermostat to the lowest possible setting.
4. Remove the burner compartment door.
NOTE: This furnace is equipped with an ignition device which
automatically lights the burner. Do not try to light the burner by
hand.
5. Move the furnace gas valve manual control to the OFF
position.
6. Wait five minutes then smell for gas. Be sure check
near the floor as some types of gas are heavier than
air.
7. If you smell gas after five minutes, immediately follow
the Safety Instructions on page 5 of this manual. If
you do not smell gas after five minutes, move the fur-
nace gas valve manual control to the ON position.
8. Replace the burner compartment door.
9. Open the manual gas shutoff valve external to the fur-
nace.
10. Turn on the electrical power to the furnace.
11. Adjust the thermostat to a setting above room tem-
perature.
12. After the burners are lit, set the thermostat to desired
temperature.
F S
URNACE HUTDOWN
1. Set the thermostat to the lowest setting.
The integrated control will close the gas valve and ex-
tinguish flame. Following a 15 second delay, the in-
duced draft blower will be de-energized. After a 120,
150, 180 or 210-second delay period (field selectable
delay OFF [90, 120, 150, 180] plus 30-second ramp
down), the circulator blower de-energizes.
2. Remove the burner compartment door and move the
furnace gas valve manual control to the OFF position.
3. Close the manual gas shutoff valve external to the fur-
nace.
4. Replace the burner compartment door.
G S P M
AS UPPLY RESSURE EASUREMENT
T
O PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE
INLET GAS SUPPLY PRESSURE MUST BE AS SPECIFIED ON THE UNIT
RATING PLATE WITH ALL OTHER HOUSEHOLD GAS FIRED APPLIANCES
.
OPERATING
The line pressure supplied to the gas valve must be within the
range specified below. The supply pressure can be measured at
the gas valve inlet pressure boss or at a hose fitting installed in
the gas piping drip leg. The supply pressure must be measured
with the burners operating. To measure the gas supply pressure,
use the following procedure.
PS
CONNECTION
Honeywell Model VR9205R
i
Outlet
Pressure
1/8 NPT
Honeywell Model VR9205R Connected to Manometer
CAUTION
,
ATMOSPHERE
PORT
FLOW
DIRECTION
2-PIN
POWER
CONNECTOR
Inlet
Pressure
Tap
1/8 NPT
Tap
THE
49