41
•
If the specific heat requested demand is above 2
degrees, the heat current demand status will
track the specific heat requested demand.
•
The circulator fan will operate per the heat airflow
profile.
C
ONDENSATE
D
RAIN
T
RAP
P
RIMING
The drain trap
MUST
be primed prior to furnace startup. To
prime, fill the drain trap with water. This ensures proper
furnace drainage upon startup and eliminates the possibility
of flue gases escaping through the drain system. Please see
requirements in
Condensate Drain Lines & Drain Trap
sec-
tion.
F
URNACE
O
PERATION
Purge gas lines of air prior to startup. Be sure not to purge
lines into an enclosed burner compartment. Follow NFPA 54,
National Fuel gas Code 8.3 for proper purging methods. In
Canada, follow approved purging methods in B149.1-15.
Check for leaks using an approved chloride-free soap and wa-
ter solution, an electronic combustible gas detector, or other
approved method. Verify that all required kits (propane gas,
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 to
check near the floor as propane is heavier than air,
7. If you smell gas after five minutes, immediately
follow 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. After the blower off delay expires,
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
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
.
Before placing a gas furnace or any gas appliance in op-
eration, verify that the gas piping, gas fittings and all gas
components are safe and free of leaks by means of an
electronic combustible gas indicator and a gas meter dial
test. Combustible gas indicators must be calibrated and
verified at intervals prescribed by the instrument manu-
facturer.
The line pressure supplied to the gas valve must be within the
range specified in the
Inlet Gas Supply Pressure
table. The
supply pressure can be measured at the gas valve inlet pres-
sure 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 fol-
lowing procedure:
ATMOSPHERE
PORT
DIRECTION
FLOW
PRESSURE
SWITCH
CONNECTION
Honeywell Model VR9205R
Figure 49
Inlet
Pressure
Tap
1/8 NPT
2-PIN
POWER
CONNECTOR
i
Manometer
Manometer
Hose
Open to
Atmosphere
Figure 50A
