GCSS96 Installation Manual
32
Consider installing an air cleaner with deep-pleated media
filter at the time of furnace installation. A deep-pleated
filter with a MERV rating of 8 (minimum) will often provide
better filtration to protect equipment and the air distribu-
tion system than a standard 1" filter and often has lower
static pressure loss than a 1" filter. Also a deep-pleated
filter will typically require less frequent replacement inter-
vals. Avoid using highly restrictive 1" filters which produce
static pressure loss greater than .25" W.C. In some instal-
lations the minimum filter size required (consult filter siz-
ing chart above) will not lend itself to a filter installation
on the side of the furnace. The installation of a centrally
installed air cleaner cabinet or a return duct filter installa-
tion may offer more practicality.
Clean Comfort™ brand MERV 11 air cleaners have 5¼” media
filters and are available in the following configurations.
Consult your distributor for information on our complete
line of IAQ Clean Comfort™ products.
Air Cleaner
Installation Location
Maximum
Heating Airflow
Filter (Media)
Dimensions
Part Number
Air Cleaner
Family
Side or bottom return 1200 CFM 16 i n X 20 i n x 5¼" AM11-1620-5
Side or bottom return 1600 CFM 16 i n X 25 i n x 5¼" AM11-1625-5
Side or bottom return 1600 CFM 20 i n X 20 i n x 5¼" AM11-2020-5
Side or bottom return 2000 CFM 20 i n X 25 i n x 5¼" AM11-2025-5
Si de return
(for 2 s e pa ra te re turn s )
Side return (Right angl e ) 2000 CFM 20 i n X 25 in x 5¼" AM11-2025-5RA AM11-5RA
Bottom return (pl a tform) 2000 CFM 20 i n X 25 i n x 5¼" AM11-2832-5PP
Bottom return (pl a tform) 2000 CFM 20 i n X 25 i n x 5¼" AM11-2843-5PP
AM11-5
2 X 1600 CFM 2, 16 in X 25 in x 5¼" AM11-3225-5 AM11-3225
AM11-5PP
AM11-5 AM11-5RA AM11-5PP
Family Family Family
Upright Installations
Depending on the installation and/or customer preference, dif-
fering filter arrangements can be applied. Filters can be in-
stalled 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 figures show possible filter locations.
FILTER
AIR FLOW
CENTRAL
RETURN
GRILLE
FILTER
SIDE RETURN
EXTERNAL FILTER
RACK KIT
(EITHER SIDE)
Possible Upright Upflow
F
I
L
T
E
R
AIR FLOW
CENTRAL
RETURN
GRILLE
RETURN
DUCT
F
I
L
T
E
R
FILTER
SUPPORT
BRACKET
(Field Supplied)
FILTER
ACCESS
DOOR
Possible Upright Counterflow
Filter Locations
HORIZONTAL INSTALLATIONS
Filters must be installed in either the central return register or in
the return air duct work.
S
TARTUP
P
ROCEDURE
& A
DJUSTMENT
Furnace must have a 115 VAC power supply properly connected and
grounded. Proper polarity must be maintained for correct opera-
tion. In addition to the following start-up and adjustment items,
refer to further information in Operational Checks section.
DRAIN TRAP PRIMING
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.
FURNACE OPERATION
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 8.1 for proper purging methods. In Canada, follow
approved purging methods in 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.
FURNACE STARTUP
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.
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
.
5. Move the furnace gas valve manual control to the OFF
position.