246796-YTG-D-0407
4
Unitary Products Group
HORIZONTAL SIDEWALL VENTING
For applications where vertical venting is not possible, the
only approved method of horizontal venting is the use of an
auxiliary power vent. Approved power venters are Fields
Controls Model SWG-4Y or the appropriate Tjernlund GPAK
model. Follow all application and installation details provided
by the manufacturer of the power vent. This unit may be hori-
zontally vented using 4” (10.2 cm) diameter pipe with a mini-
mum length of 4.5 feet (1.37 m) and a maximum length of
34.5 feet (10.82 m) with up to 4 elbows.
FILTER PERFORMANCE
The airflow capacity data published in Blower Performance
Tables above, represents blower performance WITHOUT fil-
ters. To determine the approximate blower performance of
the system, apply the filter drop value for the filter being used
or select an appropriate value from the Table below.
NOTE:
The filter pressure drop values in Blower Perfor-
mance Tables are typical values for the type of filter listed and
should only be used as a guideline. Actual pressure drop rat-
ings for each filter type vary between filter manufacturer.
NOTES:
1. Air velocity through throwaway type filters may not exceed 300
feet per minute. All velocities over this require the use of high
velocity filters.
RECOMMENDED FILTER SIZES
CFM
Cabinet Size
Top Return (in)
1200
A
(2) 14 x 20
1600
B
(2) 14 x 20
1200
B
(2) 14 x 20
1600
C
(2) 14 x 20
2000
C
(2) 14 x 20
FILTER PERFORMANCE - PRESSURE DROP INCHES W.C. AND (KPA)
Airflow Range
Minimum
Opening Size
Filter Type
Disposable
Washable Fiber
Pleated
CFM
in
2
In W.C.
In W.C.
In W.C.
0 - 750
230
0.01
0.01
0.15
751 - 1000
330
0.05
0.05
0.20
1001 - 1250
330
0.10
0.10
0.20
1251 - 1500
330
0.10
0.10
0.25
1501 - 1750
380
0.15
0.14
0.30
1751 - 2000
380
0.19
0.18
0.30
2001 & Above
463
0.19
0.18
0.30
UNIT CLEARANCES TO COMBUSTIBLES
Application
Top
Front
Rear
Left
Side
Right
Side
Flue
Floor/
Bottom
Closet
Alcove
Attic
Line
Contact
In.
In.
In.
In.
In.
In.
Downflow
1
6
0
0
3
6
1
1
Yes
Yes
Yes
No
Downflow B-Vent
1
3
0
0
0
1
1
1
Yes
Yes
Yes
No
Horizontal
1
6
0
0
3
6
Combustible
No
Yes
Yes
Yes
2
Horizontal B-Vent
1
3
0
0
0
1
Combustible
No
Yes
Yes
Yes
2
1
Special floor base or air conditioning coil required for use on combustible floor.
2
Line contact only permitted between lines formed by the intersection of the rear panel and side panel (top in horizontal position) of the furnace
jacket and building joists, studs or framing.
