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NOTE: S ee F ig. 1 4ortube routing label onmain furnace door
tocheck forproper connections.
Relocate
tubes as described
below.
1.Disconnect
collector boxpressure
tube (pink label) a t-
tached topressure
switch.
2.Extend c ollector boxpressure
tube (green l abel) which
was previously
connected
tocondensate
trap relief p ort
connection
bysplicing t osmall diameter tube (factory-
supplied inloose p arts bag.)
3.Connect collector boxpressure
tube (green label) topres-
sure s witch connection
labeled COLLECTOR
BOX.
4.Use remaining
small diameter tube (factory-supplied
in
loose p arts bag) t oextend c ollector boxpressure
tube
(pink label) which w as previously
connected
topressure
switch.
5.Route t his extended
tube (pink label) tocondensate
trap
relief port connection.
6.Determine
appropriate
Length, cut, a nd connect tube.
7.Clamp tube torelief port c onnection.
Condensate
Trap Freeze
Protection
Refer
to
condensate
Drain
Protection
section
for
recommendations
and procedures.
Construct
a Working
Platform
Construct
working
platform
where all required
furnace
clearances
are met.
(See Fig. 3 and 12 or 13.)
UNIT
OPERATION
HAZARD
Failure to follow
this caution
may result in intermittent
unit
operation.
The condensate
trap MUST
be installed
below
furnace.
See
Fig. 6 for dimensions.
The drain connection
to condensate
trap must also be properly
sloped
to an open drain.
NOTE:
A 12-in.
(305
ram)
n_ininmm
offset
pipe
section
is
recommended
with
short
(5 to 8 ft. or 1.5M
to 2.4M)
vent
systems.
This recommendation
is to reduce excessive
condensate
droplets
from exiting
the vent pipe.
(See Fig. 12, 13, or 44.)
LOCATION
General
This furnace
nmst
•
be installed
so the electrical
components
are protected
from water.
•
not be installed directly on any combustible material
other than wood flooring (refer to SAFETY
CONSIDERATIONS).
•
be located so combustion-air
and vent pipe maximum
lengths are not exceeded. Refer to Table 7.
•
be located where available electric power and gas sup-
plies meet specifications on the furnace rating plate.
•
be attached to an air distribution system and be located
as close to the center of the distribution system as pos-
sible. Refer to Air Ducts section.
•
be provided with ample space for servicing and clean-
ing. Always comply with minimum fire protection
clearances shown on the furnace clearance-to-com-
bustibles label. (See Fig. 3.)
This furnace may be located in a confined space without special
provisions for dilution or ventilation air.
NOTE:
For upflow/downflow
applications install furnace so that
it is level or pitched and forward within 1/2-in. (13 ram) for
proper furnace operation.
For horizontal
applications
pitch
1/4-in. (6 mm) n_ininmm to 1/2-in. (13 mm) n_axinmm forward
to ensure proper
condensate
drainage
from secondary
heat
exchangers.
(See Fig. 15.)
When a furnace is installed
so that supply
ducts carry air
circulated by the furnace to areas outside the space containing the
furnace, the return air shall also be handled by ducts sealed to
furnace casing. The ducts terminate outside the space containing
the furnace to ensure there will not be a negative pressure
condition within equipment room or space.
BACK
Fig. 16 - Prohibit
Installation
on Back
A93043
16
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