All installations and services must be performed by qualified service personnel.
1
II. GENERAL INSTRUCTIONS - READ BEFORE START OF INSTALLATION
1. The heating output capacity of the furnace proposed for installation should be based on a heat loss calculation
made according to the manuals provided by the Air Conditioning Contractors of America (ACCA) or the American
Society of Heating, Refrigeration and Air Conditioning Engineers, Inc. (ASHRAE).
2. All local codes and/or regulations take precedence over the instructions in this manual and should be followed
accordingly. In the absence of local codes, installation must conform with these instructions and regulations of the
National Fire Protection Association, and to the provisions of the National Electrical Code (ANSI/NFPA 70-1999 or
latest edition).
3. The installed furnace must be level and positioned in a central location with respect to outlet registers. It should
be located near the chimney to minimize any horizontal run of flue pipe, which may be required.
4. A furnace installed in a residential garage must be installed so the burner and ignition source are located higher
than 18 inches above the floor, unless the required combustion air is taken from the exterior of the garage. Also, the
furnace must be located or protected to avoid physical damage by vehicles.
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WARNING:
This furnace is not to be used as a construction heater.
5. Listed below are definitions of "COMBUSTIBLE MATERIAL" and "NON-COMBUSTIBLE MATERIAL."
COMBUSTIBLE MATERIAL:
Material made of or surfaced with wood, compressed paper, plant fibers, plastics, or other material that will ignite
and burn, whether flame resistant or not.
NON-COMBUSTIBLE MATERIAL:
Material that is not capable of being ignited and burned. Such materials consist entirely of, or a combination of,
steel, iron, brick, tile, concrete, slate, or glass.
MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS
TYPE OF UNIT
MODEL NO.
1
FROM
SIDES OF
FURNACE
FRONT
TOP &
SIDES OF
PLENUM
FROM THE
FLUE/VENT
REAR
HIGHBOY
OH5-85DXE*** 1
24 1
6
1
The minimum clearances listed in the preceding table are for fire protection. Clearance for servicing the front of the
furnace and the rear of the lowboy models should be at least 24 inches. A clearance of 24 inches is recommended
for passage to all points on the furnace requiring service access.
The OH5-85DXE*** furnaces may be installed on combustible flooring.
NOTE:
The OH5-85DXE*** furnace is approved for closet installation. If the OH5-85DXE*** is installed in a
closet, it requires two openings in the closet door for combustion air, each having a minimum area of 162 sq. inches.
This free area for the OH5-85DXE*** intentionally exceeds the recommended minimum free area of 2 square
inches per 1000 BTUH of input rate.
NOTE:
When power venting a Thermo Pride oil fired furnace with a power venting system other than the system
supplied by Thermo Pride, a fiber chamber and an isolated combustion air kit (PVB or Beckett boot) is to be used
with the other manufacturers power venting system.
Summary of Contents for OH5-85DXE
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