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All installations and services must be performed by qualified service personnel.
5. Table 1 lists the required minimum clearances to combustible surfaces from
the outer surfaces of the appliance.
Table 1: Minimum Clearances to Combustible Materials
Model
No.
Top
(in.)
Side
(in.)
Rear
(in.)
Front
(in.)
Bottom
(in.)
Vent Terminal
(in.)
OPB - 3 3 3 0 3
The minimum clearances listed in Table 1 are for fire protection purposes
only. Adequate operational and service clearances must be maintained under
all circumstances. A minimum of 36 inches clearance around the
condenser coil should be maintained for adequate airflow to the unit. Any
overhanging material or construction must not block from above the
condenser fan and the vent terminal. The suggested minimum clearances
for servicing the front of the unit and to all points requiring access are at
least 24 inches.
Notice: Access panels for the return air filter and the blower motor are
located on the rear left-hand and right-hand sides of the unit,
respectively.
6. Install this unit outdoors only.
7. This appliance is approved for use as a forced air furnace with cooling unit.
8. This appliance has been designed for use with no. 2 distillate fuel (domestic
heating) oil.
B. Selection of Installation Location
1. The unit should not be placed in a position where it is directly exposed to
sunlight during the majority of the day. Inside corners on the southeast and
southwest sides of the structure should be avoided. Heat build-up due to
solar radiation in such corners would place an increased cooling load on the
unit. Shaded areas on the north side of the structure are preferred.
2. The unit must be located on a level, dry surface in an area, which is free and
protected from excessive drafts or wind. Mount the unit on a sturdy base at
least one inch above the ground or roof surface. A poured concrete slab, or
equivalent, is ideal. If concrete blocks or bricks are used, be sure to use well-
tamped gravel fill beneath the blocks or bricks to prevent settling.
Notice: Do not install the unit on any type of combustible base.
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