ACCESSORY KIT INSTALLATION MANUAL
171002-UAI-A-1205
Unitary Products Group
FILTER RACK KITS FOR UPFLOW/HORIZONTAL GAS FURNACES
1SR0200, 1BR0114, 1BR0214, 1BR0117, 1BR0217, 1BR0121,1BR0221, 1BR0124, 1BR0224
FOR USE WITH MODELS: ALL 80% & 90% UPFLOW MODELS
GENERAL
These filter rack accessory kits contain the items necessary
to install a filter external to the furnace.
The 1SR kit is intended for use on an upflow furnace with a
side-return air opening. The 1BR kits are intended for use
with upflow or horizontal furnaces using a bottom (end) return
air opening.
Each accessory contains a filter rack, and an appropriately-
sized filter.
The 1SR0200 side-return kit contains a disposable high-effi-
ciency pleated 2" thick filter. The 1BR0200 filter rack can also
accommodate a 1" thick filter, a 4" thick filter or a 4-3/8" thick
filter.
The 1BR01XX filter rack kits contain a 1" disposable filter and
are intended to ONLY be used with 1" filters.
The 1BR02XX filter rack kits each contain a disposable high-
efficiency pleated 2" thick filter. The 1BR02XX filter racks can
also accommodate a 1" thick filter, a 4" thick filter or a 4-3/8"
thick filter.
INSTALLATION - SIDE-RETURN RACKS
1.
Cut the return air opening in the side of the furnace cas-
ing using the dimensions shown in the furnace installa-
tion instructions.
2.
If the furnace is equipped with an internal shipping sup-
port rail, it should be removed and discarded prior to
installation of the filter rack.
3.
Remove the filter from the rack and using the filter rack
as a template, drill holes into the furnace casing on all
four sides of the filter rack. At least two screws should be
used on each of the four flanges. Be careful not to drill
into any internal furnace components while doing this.
4.
Using sheet metal screws (field provided), attach the fil-
ter rack to the side of the furnace. It is recommended
that weather-stripping or sealant be used between the fil-
ter rack and the furnace casing to reduce air leakage.
See Figure 1 below.
5.
Attach the return air duct to the flanges provided. It is
recommended that weather-stripping or sealant be used
between the filter rack and the furnace casing to reduce
air leakage.
6.
Install the filter into the 2" slot in the inner side of the filter
rack.
7.
If a 1" filter is to be used, it will fit into the 1" wide slot pro-
vided.
8.
If a 4" or 4-3/8" filter is to be used, remove the two inter-
nal removable rails in the filter rack. These will slide out
of the filter door, leaving a space wide enough for a
thicker filter.
9.
When the installation is complete, make sure that the fil-
ter door is closed and latched before operating the fur-
nace.
INSTALLATION - BOTTOM-RETURN RACKS
1.
Lay the furnace on its side and place the filter rack
against the bottom (return air) side of the furnace
2.
If the furnace is equipped with internal shipping support
rails, they should be removed and discarded prior to
installation of the filter rack.
3.
Remove the filter from the rack and drill holes into the
furnace casing on all four sides of the filter rack. At least
two screws should be used on each of the four flanges.
Be careful not to drill into any internal furnace compo-
nents while doing this.
FIGURE 1: Side Return (Upflow)
