33
D
RAIN
T
RAP
P
RIMING
The drain trap MUST be primed prior to furnace startup. To
prime, fill both sides of the drain trap with water. This
ensures proper furnace drainage upon startup and prohibits
the possibility of flue gases escaping through the drain
system.
F
URNACE
O
PERATION
Purge gas lines of air prior to startup. Be sure not purge
lines into an enclosed burner compartment. Follow NFPA 54,
National Fuel Gas Code for proper purging methods. In
Canada, follow approved purping methods in CAN/CSA
B149.1-15.
Check for leaks using an approved chloride-free soap and
water solution, an electronic combustible gas detector, or
other approved method. Verify that all required kits (propane
gas, high altitude, etc.) have been appropriately installed.
F
URNACE
S
TARTUP
1. Close the manual gas shutoff valve external to the furnace.
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 in the
Safety Considerations
on page 3 of this manual. If you do not smell gas after
five minutes, move the furnace gas valve manual control
to the ON position.
8. Replace the burner compartment door.
9. Open the manual gas shutoff valve external to the furnace.
10. Turn on the electrical power to the furnace.
11. Adjust the thermostat to a setting above room
temperature.
12. After the burners are lit, set the thermostat to desired
temperature.
F
URNACE
S
HUTDOWN
1. Set the thermostat to the lowest setting.
The integrated control will close the gas valve and
extinguish flame. Following a 15 second delay, the induced
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 furnace.
4. Replace the burner compartment door.
G
AS
S
UPPLY
P
RESSURE
M
EASUREMENT
G
AS
P
RESSURE
T
EST
This test is to be used for field test mode only, and it will
allow gas valve pressure to be checked at 100% firing rate.
1. If both ‘FAULT RECALL’ and ‘LEARN’ push buttons are
pressed for greater than 1 second, the display will blank
to indicate the push buttons are pressed. Within 5
seconds, both push buttons should be released. If any
push button is not released, the test mode will not
activate. The display will return to normal.
2. Once the push buttons are released, the display will
flash “Ft” to indicate the push buttons are released
and successful entry into test mode has been achieved.
3. The control will force a high capacity demand. If a low
capacity demand is already being serviced, it will be
forced to high capacity.
4. The display will continue to flash “Ft” until high capacity
(100%) is achieved. Once achieved, the display will show
“Ft” without flashing. A 5-minute timer will be started
to allow sufficient opportunity for the gas pressure to
be tested.
5. If a call for heat is given or removed during the test,
the system will still operate until the 5 minute test
time is complete.
6. During test mode, if both push buttons are pressed for
greater than 1 second, the display will blank to indicate
push buttons are pressed. If both push buttons are
released within 5 seconds, the test mode will terminate
and the system will return to normal operation.
Otherwise, the test mode will continue uninterrupted.
7. After completion of the 5-minute timer or test mode
termination, whichever is earlier, the system will return
to normal operation, either continuing an existing heat
demand or going to the idle state.
CAUTION
T
O
PREVENT
UNRELIABLE
OPERATION
OR
EQUIPMENT
DAMAGE
,
THE
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 tap 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.
1. Turn OFF gas to furnace at the manual gas shutoff valve
external to the furnace.
2. Connect a calibrated water manometer (or appropriate
gas pressure gauge) at either the gas valve inlet pressure
tap or the gas piping drip leg. See Honeywell VR9205 gas
valve figure or White-Rodgers 36J54 gas valve figure for
location of inlet pressure tap.