27
600
800
1000
1200
1400
1600
2000
0453BXA
388*
388*
480
576
---
---
---
0703BXA
---
647*
647*
647*
672
---
---
0704CXA
---
---
583*
583*
672
768
---
0904CXA
---
---
863*
863*
863*
863*
---
0905DXA
---
---
---
777*
777*
777*
960
1155DXA
---
---
---
971*
971*
971*
971*
Input__A
ir
fl
ow
COOLING AIRFLOW REQUIREMENT (CFM)
*Minimum filter area dictated by heating airflow requirement.
Disposable Minimum Filter area (sq. in)
[Based on 300 ft/min filter face velocity]
U
PRIGHT
I
NSTALLATIONS
Depending on the installation and/or customer preference, differ-
ing filter arrangements can be applied. Filters can be installed in
the central return register or a side panel external filter rack kit
(upflows). As an alternative a media air filter or electronic air cleaner
can be used as the requested filter.
The following figure shows possible filter locations.
FI
L
T
E
R
AIR FLOW
CENTRAL
RETURN
GRILLE
FI
L
T
E
R
SIDE RETURN
EXTERNAL FILTER
RACK KIT
(EITHER SIDE)
FI
LTE
R
FI
L
T
E
R
AIR FLOW
FILTER
ACCESS
DOOR
CENTRAL
RETURN
GRILLE
RETURN
DUCT
FI
LTE
R
FILTER
SUPPORT
BRACKET
(PROVIDED)
Possible Upright Upflow
Possible Upright Counterflow
Filter Locations
NOTE:
Internal filter retention is not provided on this furnace. If an
internal installation is desired, an internal filter retention kit is avail-
able as an accessory. Please see your distributor for details.
H
ORIZONTAL
I
NSTALLATIONS
Filters must be installed in either the central return register or in the
return air duct work.
XIV
XIV
XIV
XIV
XIV. ST
. ST
. ST
. ST
. STAR
AR
AR
AR
ARTUP PR
TUP PR
TUP PR
TUP PR
TUP PROCEDURE & AD
OCEDURE & AD
OCEDURE & AD
OCEDURE & AD
OCEDURE & ADJUST
JUST
JUST
JUST
JUSTMENT
MENT
MENT
MENT
MENT
Furnace must have a 115 VAC power supply properly connected
and grounded. Proper polarity must be maintained for correct op-
eration. In addition to the following start-up and adjustment items,
refer to further information in
Section XVI, Operational Checks
.
H
EAT
A
NTICIPATOR
S
ETTING
The heat anticipator in the room thermostat must be correctly ad-
justed to obtain the proper number of cycles per hour and to pre-
vent “overshooting” of the setting. Set the heat anticipator setting to
0.7 amps. Follow the thermostat manufacturer’s instructions on
how to adjust the heat anticipator setting.
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 prohibits the possibility of flue gases escaping
through the drain system.
F
URNACE
OPERATION
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 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 to check near
the floor as some types of gas are heavier than air.
7. If you smell gas after five minutes, immediately follow the
instructions on page 4 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 100 or 150 second delay period
(field selectable), the circulator blower will be de-energized.
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.
W
HITE
-R
ODGERS
36G54 G
AS
V
ALVE
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.
