Filter
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G43UF / Page 4
FEATURES
FILTER (NOT FURNISHED)
Filter and provisions for external mounting must be field
provided.
OPTIONS
Air Filter and Rack Kit for Side Return Air Applications
(Not for use with RAB Return Air Base)
Washable or vacuum cleanable polyurethane frame type filter
and external side return air rack available for field installation.
Available in single and ten pack kits.
Rack has filter door for easy filter servicing.
Flanges on rack allow easy duct connection.
Field installs on either side of unit cabinet.
See dimension drawing.
EZ Filter Base for Bottom Return Air Applications
Hinged door with thumbscrew for easy filter access.
Uses standard size filters (field provided).
CABINET
Low−profile, narrow width cabinet allows easy installation.
Heavy−gauge, cold rolled steel construction.
Pre−painted cabinet finish.
Flanges provided on supply air opening for ease of plenum
connection or alignment with indoor coil.
Cabinet is insulated with foil faced insulation on sides and back
of heating compartment.
Complete service access.
Safety interlock switch automatically shuts off power to unit
when blower compartment access door is removed.
Gas piping and electrical inlets are provided in both sides of cabinet.
Return Air Entry:
For bottom return−air entry, remove furnished bottom seal panel
from cabinet.
For side return−air entry, corners are marked on either side of
cabinet for return air cut−outs. On furnaces with side return air
and condensate trap on the same side of the cabinet, a field
fabricated transition or RAB is required to use an IAQ product
higher than 14−3/16 in. (360 mm) when installed next to the unit
and serviced from the front. IAQ products higher than 20 in. (508
mm) require a field fabricated transition. See dimension
drawings.
NOTE − 60C and 60D size units that require air volumes over
1800 cfm (850 L/s) must have one of the following:
1. Single side return air with transition, to accommodate 20 x
25 x 1 in. (508 x 635 x 25 mm) cleanable air filter, required to
maintain proper air velocity.
2. Single side return air with optional RAB Return Air Base.
3. Bottom return air.
4. Return air from both sides.
5. Bottom and
one side return air.
See Blower Performance Tables for additional information.
Coil Match−up
All furnaces exactly match C33 and CX34 cased up−flow indoor
coils with same letter designation in model number. No adaptor
required. Engaging holes furnished on cabinet for alignment.
C33 uncased coils match furnaces without any overhang but
require an optional adaptor base or field fabricated transition to
match furnace opening. See C33 coil bulletin for additional
information.
OPTIONS
Condensate Drain Heat Cable Kits
Self-limiting wattage heat cable prevents condensate drain from
freezing in unconditioned areas.
Available in 6, 24 or 50 ft. (1.8, 7.3, or 15.2 m) lengths.
Heat Cable Tape:
66 ft. (20 m) length, 1/2 in. (13 mm) wide fiberglass.
60 ft. (18 m) length, 2 in. (51 mm) wide aluminum foil.
Condensate Trap Alternate Location Kit
Allows condensate drain to be installed on the opposite side of
the furnace from the exhaust venting (up−flow applications only).
RAB Return Air Base
On furnaces with side return air and condensate trap on the
same side of the cabinet, a field fabricated transition or RAB is
required when installing an IAQ product higher than 14−3/16 in.
(360 mm) when installed next to the unit and serviced from the
front. IAQ products higher than 20 in. (508 mm) require a field
fabricated transition.
Must be used for 60C and 60D models with air volumes over
1800 cfm (850 L/s) in up−flow applications when only one side
return is required.
Cabinet is pre−painted steel to match the furnace.
See Dimension Drawing.
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