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5
INSTALLATION GUIDELINES
Codes
All local codes and regulations take precedence over the instructions in this manual and
shall be followed accordingly. In the absence of local codes, this installation must
conform to these instructions and to the regulations of the National Fire Protection
Association (NFPA) publications, the Standard for the Installation of Oil-Burning
Equipment, NFPA 31-2001, and the National Electrical Code, ANSI/NFPA 70-2002, or
the latest editions thereof. To obtain copies of these publications for a fee, contact the
NFPA at the address given in Appendix A of this manual.
Installation Location
c WARNING:
• These furnaces are designed for indoor installation ONLY.
• These furnaces are NOT to be used as construction heaters.
• DO NOT hang the horizontal / counterflow furnace from a structure, or
surface, by any integral part or fastener of the furnace. The furnace was
not designed to support itself in this manner.
In as much as practical, the furnace should be positioned near a chimney or vent and
should be centralized with respect to the air distribution system.
For a utility room installation, the entrance door must be wide enough to permit the
largest part of the furnace to pass through the doorway or allow sufficient clearance to
permit the replacement of another appliance, e.g. a water heater, in the room.
If the furnace is installed in a residential garage, it must be installed so the burner is
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 from impacts by vehicles.
Highboy and lowboy furnace models must rest on sturdy, stable, and level surfaces.
The horizontal / counterflow model may be mounted on a level surface, as described
above, or it may be suspended from an overhead structure or surface. If this model is
suspended from hanger rods, support the furnace from the bottom casing surface
at three (3) places, across both ends of the casing and across the casing, near the
middle of the furnace. Generally, a simple support frame for the furnace can be
fabricated from structural steel angle, threaded steel rod, and fastener hardware, refer
to Figure 1. Adjust the height of the support angles to level the unit in position.