16
NOTE
: See Fig. 14 or tube routing label on main furnace door to
check for proper connections.
Relocate tubes as described below.
1. Disconnect collector box pressure tube (pink label) attached
to pressure switch.
2. Extend collector box pressure tube (green label) which was
previously connected to condensate trap relief port
connection
by
splicing
to
small
diameter
tube
(factory--supplied in loose parts bag.)
3. Connect collector box pressure tube (green label) to
pressure switch connection labeled COLLECTOR BOX.
4. Use remaining small diameter tube (factory--supplied in
loose parts bag) to extend collector box pressure tube (pink
label) which was previously connected to pressure switch.
5. Route this extended tube (pink label) to condensate trap
relief port connection.
6. Determine appropriate Length, cut, and connect tube.
7. Clamp tube to relief port connection.
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.
CAUTION
!
NOTE
: A 12--in. (305 mm) minimum 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 must
S
be installed so the electrical components are protected from
water.
S
not be installed directly on any combustible material other than
wood flooring (refer to SAFETY CONSIDERATIONS).
S
be located so combustion--air and vent pipe maximum lengths
are not exceeded. Refer to Table 7.
S
be located where available electric power and gas supplies meet
specifications on the furnace rating plate.
S
be attached to an air distribution system and be located as close
to the center of the distribution system as possible. Refer to Air
Ducts section.
S
be provided with ample space for servicing and cleaning.
Always comply with minimum fire protection clearances shown
on the furnace clearance--to--combustibles 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 mm) for proper
furnace operation. For horizontal applications pitch 1/4--in. (6
mm) minimum to 1/2--in. (13 mm) maximum 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.
FRONT
BACK
FRONT
B
A
C
K
A93043
Fig. 16 -- Prohibit Installation on Back
58MV
C
