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All installations and services must be performed by qualified service personnel.
2
A. VENTING:
NOTE: On the OH6FA072D*** it is possible to rotate the flue elbow (which is factory installed for vertical
discharge) 90°
counterclockwise from the vertical position to adapt to various venting systems.
c CAUTION MUST BE TAKEN NOT TO EXCEED 90° ROTATION (OF THE FLUE
ELBOW) COUNTERCLOCKWISE OR RIGHT FROM THE VERTICAL POSITION.
ROTATION OF FRONT FLUE ELBOW
When an installation requires that the flue exit out the left hand side casing on a front flue unit, remove screw
securing the 90 deg. elbow and rotate it 90° counterclockwise.
Then, remove knock-out in side casing and extend
vent through the opening.
A trim collar may be ordered from Thermo Products to hide the gap around the flue pipe. This trim collar, however,
is not required for operation. Trim collar/gasket part numbers(s) 14121 / 330073.
NOTE: ROTATION OF FLUE PIPE IS ONLY ALLOWED FOR LEFT HAND SIDE VENTING
APPLICATIONS.
The OH6FA072D*** may be vented through a standard correctly sized chimney.
The OH6FA072D*** may also be horizontally vented through a side wall. Thermo Products has available the Field
model FDVS-45/FVOP-415 side wall vent kit for such applications. When installing the FDVS-45/FVOP-415 side
wall vent kit, outside combustion air must also be applied to the burner. The following table identifies application
order information.
The Field vent kit is set up with 4 inch diameter vent pipe with concentric through-the-wall vent termination/inlet
air vent hood. The combustion air inlet pipe diameter is also 4 inch diameter. For Riello, the combustion air inlet
pipe will be reduced to 3 inch diameter with the Riello side wall vent kit. For Beckett, the combustion air inlet pipe
will be reduced to 2” diameter with the Beckett side wall vent kit.
The side wall vent may be installed either through the upper knock-out on the left side casing of the unit or
vertically out the top opening of the vestibule.
The combustion air inlet can be installed through the either the lower left side casing knock-out or the lower right
side casing knock-out.
SIDE WALL VENTING APPLICATION ORDER INFORMATION
BURNER
FIELD VENT
TERMINATION KIT
(15’ application MAX)
THERMO PRODUCTS
PART NUMBER
SIDE WALL VENT
ACCESSORIES KIT
(BURNER SPECIFIC)
THERMO PRODUCTS
PART NUMBER
COMBUSTION AIR
INTAKE HOOD KIT
(FOR COMBUSTION AIR
APPLICATIONS ONLY)
THERMO PRODUCTS
PART NUMBER
Beckett AFG AOPS8393 AOPS8394 AOPS8396
Riello BF3 AOPS8393 AOPS8395 AOPS8396