-- 16 --
LOWER inducer housing drain connection to
condensate trap.
e. Determine appropriate length, cut, and connect tube to
condensate trap.
f. Clamp tube to prevent any condensate leakage.
3. Relief Port Tube
Refer to Pressure Switch Tubing section for connection
procedure.
CONDENSATE TRAP FIELD DRAIN
ATTACHMENT
Refer to Condensate Drain section for recommendations
and procedures.
PRESSURE SWITCH TUBING
One collector box pressure tube (pink label) is factory connected
to the pressure switch for use when furnace is installed in
UPFLOW applications. This tube MUST be disconnected and
used for the condensate trap relief port tube. The other collector
box pressure tube (green label) which was factory connected to
the condensate trap relief port connection MUST be connected to
the pressure switch in DOWNFLOW or HORIZONTAL
RIGHT applications.
NOTE
: See Fig. 13 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. Route extended collector box pressure tube behind inducer
motor bracket then between inducer motor and
pressure switch.
4. Connect collector box pressure tube (green label) to
pressure switch connection labeled COLLECTOR BOX.
5. Use remaining smaller diameter tube (factory-supplied in
loose parts bag) to extend collector box pressure tube
(pink label) which was previously connected to
pressure switch.
6. Route this extended tube (pink label) to condensate trap
relief port connection.
7. Determine appropriate length, cut, and connect tube.
8. 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 11 or 12.)
UPFLOW OR DOWNFLOW
HORIZONTAL
FRONT
FRONT
LEVEL (0”)
TO 1/2” (13mm)
MAX
MIN 1/4” (7mm)
TO 1/2” (13mm)
MAX
A02146
Fig. 14 -- Furnace Location for Proper Condensate Drainage
UNIT OPERATION HAZARD
Failure to follow this caution may result in intermittent
unit operation.
The condensate trap MUST be installed below furnace. See
Fig. 5 for dimensions. The drain connection to condensate trap
must also be properly sloped to an open drain.
CAUTION
!
NOTE
: Vent pipe(s) and combustion-air pipe (when applicable)
are restricted to a minimum length of 5 ft.(1.5 M) (See Table 11.)
NOTE
: A 12--in. (305 mm) minimum offset pipe section is
recommended with short (5 to 8 ft / 1.5 M -- 2.4 M) vent systems.
This recommendation is to reduce excessive condensate droplets
from exiting the vent pipe. (See Fig. 11, 12 or 41.)
LOCATION
Step 1—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 11.
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.
This furnace may be located in a confined space without special
provisions for dilution or ventilation air.
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.
NOTE
: For upflow/downflow applications install furnace so that
it is level or pitched 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.
14.)
