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SECTION E:
CHIMNEY INSTALLATION
This unit is a sealed combustion system and as an installation option it may be connected
directly to a chimney. Using this option, room air is used for combustion and the exhaust gases
are vented into the chimney to the outside.
IMPORTANT:
1.
This appliance should be installed by a licensed, authorized person(s) due to necessity of
making electrical, water and fuel connections. Check local codes and ordinances and/or the latest
edition of the National Fire Protection Association Standard for the Installation of Oil-Burning
Equipment. NFPA-31.
2.
A Barometric Draft Regulator must be used in the exhaust pipe to stabilize flue draft. It is required
that a UL-listed (Underwriters Laboratories) damper be used. The Barometric Draft Regulator must
be installed in accordance with NFPA-31.
3.
Installation in an unconfined space in buildings of conventional frame, brick or stone construction,
infiltration normally is adequate to provide air for combustion and ventilation.
For confined spaces, openings for air intake and venting must be provided. (See Fig.1.) Or connect Air
Intake Inlet port directly to outside air with 3 or 4 inch aluminum pipe.
Check local codes and ordinances and/or NFPA-31 Code for specific details.
4.
It is recommended that the OM-180 hot water heater be connected to an independent chimney flue.
5.
Select a place that can draw in sufficient air for combustion. The air intake hole should be placed in a
spot that can draw in outside air near the floor.
Required opening area (confined space) = 155 in
CAUTION:
1.
In case another appliance is connected to the same chimney flue (2 or more units), it may be necessary
to comply with state and local codes.
2.
Connecting the OM-180 hot water heater with two or more appliances using the same chimney flue may
affect the performance of the hot water heater.
3.
Total length of the exhaust pipe and the chimney liner must be no greater than 25 ft. Maintain the shortest
piping possible by selecting a location as close as posssible to the chimney.
NOTE:
1.
To prevent against exhaust leaks, make sure all connections are properly fitted and seal connection with
aluminum tape or heat resistant sealing material.
2.
Chimney liner should be the same size as the exhaust pipe. Exposed exhaust pipe should be protected
with appropriate insulation.
3.
For a chimney installation, use accessory (option) parts.
Chimney Installation Adapter kit
(Part #20476430-Dia.5" or Part #20476415-Dia.4")
17
× 2 places
2
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