GCVM96 & GMVM96 Installation Instructions

20
ALTERNATE FURNACE CONNECTIONS
If the standard locations are undesirable for a specific installation,
alternate side panel locations are available for both combustion air
inlet and vent/flue pipe connections on counterflow-horizontal
models. On upflow-horizontal models, only an alternate vent
location is provided.
NOTE: Standard and alternate locations can be combined (i.e.,
an installation may use the standard combustion air intake loca-
tion but use the alternate vent/flue location or vice versa), if needed.
E DGES  OF  SHEET  METAL  HOLES  MAY  BE  SHARP .U SE  GLOVES  AS  A 
PRECAUTION  WHEN  REMOVING  HOLE  PLUGS .
WARNING
ALTERNATE VENT/FLUE LOCATION
The alternate vent/flue location is the large hole directly in line with
the induced draft blower outlet. To use the alternate vent/flue loca-
tion refer to the following steps and the “Alternate Vent/Flue Loca-
tion” figure.
NOTE: In the horizontal left installation position, a means of
condensate collection must be provided to keep vent pipe
condensate from entering the draft inducer housing. If the vent-
drain elbow is eliminated from the installation; an RF000142
kit must be used.
1. Remove and save the four screws securing the vent/flue
coupling to the furnace top panel.
Counterflow units.
Remove and save the four screws securing the vent/flue
coupling to the furnace. Also remove the three screws
securing the furnace’s internal vent/flue piping to the blower
deck.
2. Upflow and Counterflow units.
Loosen the worm gear hose clamps on the rubber elbow
and detach it from both the induced draft blower and the
vent/flue pipe.
3. Upflow and Counterflow units.
Remove the vent/flue pipe from the furnace.
4. Cut the vent/flue pipe 3.75 inches from the flanged end of
the pipe (see “Vent/Flue Pipe Cuts” figure). The section of
pipe attached to the coupling will reach through the side
panel to the induced draft blower. Discard remaining pipe
and elbows.
Counterflow units.
Cut the vent/flue pipe 3.75 inches from the blower deck
coupling (see “Vent/Flue Pipe Cuts” figure). Save vent/flue
pipe attached to blower deck coupling for use in the alternate
location. Discard remaining pipe and elbows.
FLANGE
CUT HERE
3.75"
Vent/Flue Pipe Cuts
5. Remove plastic plug from alternate vent/flue location.
Relocate and install plug in standard vent/flue location (top
cover).
Counterflow units.
Remove plastic plug from alternate vent/flue location.
Relocate and install grommet in standard vent/flue location
(basepan). Grommet remaining hole in blower deck with
plastic plug included in the drain kit bag.
6. Upflow and Counterflow units.
Insert cut section of vent/flue pipe and coupling into alternate
vent/flue location. Using a rubber coupling and worm gear
hose clamps from the drain kit bag, attach the vent/flue
pipe and coupling to the induced draft blower. Secure the
coupling to the cabinet using the screws removed in step 1
or with field-supplied 3/8” #8 self tapping screws.
T HE  RUBBER  ELBOW  IS  NOT  DESIGNED  TO  SUPPORT  A  LOAD .W HEN  THE 
RUBBER  ELBOW  IS  MOUNTED  EXTERNA L LY  TO  THE  FURNACE  CABIN E T ,
EXTREM E  CARE  MUST  BE  TAKE N  TO  ADEQUATEL Y  SUPPORT  FIEL D ‐
SUPPLIED  VENT / FLUE  PIPING , AS  DAMAGE  CAN  RESULT  IN  LEA KS 
CAUSING  BODILY  INJUR Y  OR  DEATH  DUE  TO  EXPOS U RE  TO  FLUE  GASES ,
INC LUDIN G  CARBON  MONOXIDE
WARNING
7. Upflow and Counterflow units.
For upright installations, externally mount the rubber
elbow to the vent/flue coupling using a worm gear hose
clamp. Secure field supplied vent/flue piping to the rubber
elbow using a worm gear hose clamp. NOTE: Use of the
alternate vent/flue location for upright installations, requires
the drain trap be installed on the same side of the unit as
the flue pipe.
ALTERNATE COMBUSTION AIR INTAKE LOCATION - COUNTERFLOW/
HORIZONTAL MODELS ONLY
The alternate combustion air intake location consists of a large,
unobstructed hole (alternate vent connection is aligned with the
Induced Draft Blower). To use the alternate combustion air intake
location, refer to the following steps, and the “Alternate Combus-
tion Air Intake Location” figure.
1. Remove and save the four screws securing the combustion
air intake coupling. Remove an additional three screws
securing the furnace’s internal combustion air intake pipe
to the blower deck.