Intertek MVM97 Series Installation Instructions Manual page 20

A V /F L
LTERNATE ENT LUE OCATION
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 on an upflow / horizontal model, refer to the following steps
and the "Alternate Vent/Flue Location" figure. To use an alternate
vent location on a counterflow / horizontal model, a special kit
is required.
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 screws from vent flange.
2. Remove internal elbow and vent pipe.
3. Cut pipe 2 1/2" from flange.
4. Remove cabinet plug adjacent to inducer outlet and install
an original cabinet vent hole.
5. Install RF000142 coupling on inducer outlet.
6. Install flanged vent section removed in step 2 & secure with clamps.
7. Secure flange to cabinet using screws removed in step 1.
A C A
LTERNATE OMBUSTION IR
(Upflow / Horizontal models only)
When using the alternate venting location, either in a horizontal left side down
installation or a vertical installation using down – venting, an alternate combustion
20
P
ROVISION
DOWN VENTING UPFLOW MODEL FURNACES ONLY
Combustion Air Pipe
Field Supplied
Drain Tee on Vent Pipe
All piping and fittings must be joined per material manufacturer's specifications
to prevent separation and flue gas leaks.
Insert flange. Cut 2 ½" long.
R 000142 F
Use alternate vent
& combination air locations
Vent Pipe
Condensate trapped
to prevent flue gas from escaping
and routed to field supplied
condensate disposal
Figure 12
Figure 10
Vent/Flue Pipe Cuts
Figure 11
6' MAX.
Both Pipes Terminated
Outside Structure
1/4" per foot min. slope