International comfort products B Series Installation Instructions Manual page 16

INSTALLATION INSTRUCTIONS
NOTE: Remove knockout in
casing before re−installing the
condensate trap.
Rotate elbow to
9
desired position
and torque clamp
on inlet 15 lb.−in.
Slide relief tube in
stand−offs to adjust
length.
Attach condensate
trap with screw to
collector box.
Align trap over middle
and right−hand port on
collector box.
Condensate Drain Connection
CAUTION
!
FROZEN AND BURST WATER PIPE HAZARD
Failure to protect against the risk of freezing may result
in property damage.
Special precautions MUST be made if installing furnace
in an area which may drop below freezing. This can
cause improper operation or damage to equipment. If
furnace environment has the potential of freezing, the
drain trap and drain line must be protected. The use of
accessory drain trap heaters, electric heat tape and/or
RV antifreeze is recommended for these installations.
CAUTION
!
PROPERY DAMAGE HAZARD
Failure to follow this caution may result in burst water
pipes and/or property damage.
If a condensate pump is installed, a plugged condensate
drain or a failed pump may cause the furnace to shut
down. Do not leave the home unattended during freezing
weather without turning off water supply and draining
water pipes or otherwise protecting against the risk of
frozen pipes.
DO NOT trap the drain line in any other location than at the
condensate drain trap supplied with the furnace. If possible, DO
NOT route the drain line where it may freeze. The drain line
must terminate at an inside drain to prevent freezing of the
condensate and possible property damage.
Special precautions MUST be made if installing furnace in an
area which may drop below freezing. This can cause improper
operation or damage to the equipment. If the furnace
environment has the potential of freezing, the drain trap and
16
Horizontal Left Trap Configuration (CONTINUED)
Representative drawing only, some models may vary in appearance.
Specifications subject to change without notice.
Install two plugs previously
removed in open ports on
collector box.
Connect relief tube to port
on collector box.
Connect the new pressure switch
7
tube from Loose Parts bag to port
on front pressure switch.
Route pressure switch tube
8
underneath relief tube and
connect to port on
collector box.
Connect relief tube to relief
port on condensate trap.
drain line must be protected. A self−regulating, shielded and
waterproof heat tape rated at 3 to 6 watt per foot (10 to 20 watt
per meter) at 115 volt, 40° F (4° C) may be used to help provide
freeze protection. Wrap the drain trap and drain line with the
heat tape and secure with appropriate plastic ties. Follow the
heat tape manufacturer's recommendations. Prime the trap
before furnace operation.
Upflow/Downflow Orientation
In the Upflow or Downflow orientation, the condensate trap is
inside the furnace casing. The condensate drain must be
routed from the trap through the furnace casing. The
condensate drain can be routed through the left or right side of
the casing. (The left or right side is as you are viewing/facing
the furnace from the front.) The furnace condensate drain can
be connected to the indoor coil condensate drain, humidifier or
auxiliary drain traps as shown in Figure 12.
NOTE: On narrower casings, it may be easier to remove the
condensate trap, connect the drain line components and
re-install the condensate trap. Read the steps thoroughly to
familiarize yourself with the required steps.
For Right Side Condensate Drain:
1. Remove the 7/8−in. knock−out from the right side of the
casing. (See Figure 13 for suggested knockout removal
technique.)
2. Remove the pre−formed rubber drain elbow and two
spring clamps from the loose parts bag.
3. Slide a spring clamp 1 in. (25 mm) down the plain end
(the end without the formed grommet) of the drain elbow.
4. From inside the casing, insert the formed grommet end
of the elbow through the 7/8−in. knockout in the casing.
5. Pull the grommet through the casing from the outside
until it is seated in the knockout
6. Attach the plain end of the drain elbow to the outlet stub
on the drain trap. Secure the drain elbow to the trap with
the spring clamp.
The remaining drain line can be constructed from field supplied
1/2−in. CPVC or 3/4−in. PVC pipe in compliance with local
Gas Furnace: N9MSB
A11574LB
440 01 4102 01