Monessen Hearth Direct Vent Gas Insert IDV490NVC - Manual (Page 14)

14 57D0016
High-Temp
Silicone
High-Temp
Silicone
VENT INSTALLATION
ALTITUDE CONSIDERATIONS
This heater has been tested at altitudes ranging from sea level to 4,500 feet (USA), 0-2000 feet (Canada). In this testing,
heater with standard orifice burns correctly with just an air shutter adjustment. If you need to resize orifice for use at high
altitude, contact your dealer.
Failure to adjust air shutter properly may lead to
improper combustion which can create a safety
hazard. Consult your dealer or installer if you
suspect an improperly adjusted air shutter
W
ARNING
Figure 7 - Connecting Exhaust Pipe to Heater
Exhaust
(centered on unit)
Inlet
490 Unit - 4" and 3" UL
1777 Gas Liner
380 Unit - 3" and 3" UL
1777 Gas Liner
Termination Kit
490 Unit - AI42TK43A
380 Unit - AI31TK33A
Apply high-temperature silicone
to lines on both ends and
secure with two (2) screws.