W415-0919 / D / 03.27.13
10
UPFLOW INSTALLATION:
Vent positioning, pressure switch location and drain locations shall be performed in ac-
cordance with instructions in the appropriate sections of this manual.
HORIzONTAL INSTALLATION:
Vent positioning, pressure switch location and drain locations shall be performed in
accordance with instructions in the appropriate sections of this manual.
NON-SUSPENDED INSTALLATION:
maintain clearances to combustibles as outlined in Figure 1, Table b. The
furnace must be supported in such a way as to not allow twisting or sagging of the cabinet.
SUSPENDED INSTALLATION:
maintain clearances to combustibles as outlined in Figure 1, Table b. The fur-
nace may be suspended by field fabricating a cradle of angle iron and threaded rod. Secure the furnace with 2”
minimum slotted angle or equivalent as shown in Figure 3. The furnace must be supported in such a way as to
not allow twisting or sagging of the cabinet. position the supports so as to not interfere with accessing the burner
and blower compartments.
DOWNFLOW INSTALLATION:
Vent positioning, pressure switch location and drain locations shall be performed
in accordance with instructions in the appropriate sections of this manual.
The opening in the floor must provide adequate clearances to the combustible material according to the clear-
ance to combustible as outlined in Figure 1, Table b.
IMPORTANT
:
• THE FURNACE MUST BE INSTALLED ON A LEvEL SURFACE. IT IS RECOMMENDED
THAT THE REAR OF THE FURNACE BE ELEvATED 1/4” HIGHER THAN THE FRONT
TO FACILITATE PROPER CONDENSATE DRAINAGE.
• IF THE FURNACE AND AIR CONDITIONER IS LOCATED ABOvE A FINISHED SPACE,
INSTALL A DRAIN PAN UNDERNEATH THE UNIT.
4.3 InsTallaTIon In UpfloW, DoWnfloW oR hoRIzonTal posITIons
• “Airplane glue” and similar adhesives and cements
• Ammonia, as commonly found in permanent wave solutions used in hair dressing salons
• Anti-static fabric softeners used in clothes dryers
• Carbon tetrachloride
• Chlorinated cleaners and waxes
• Chlorine and bromine based swimming pool chemicals
• De-icing salts or chemicals (rock salt, etc.)
• Dry cleaning fluids such as perchloroethylene
• Fumes from curing polyurethane and similar substances
• halogen based refrigerants including R-12 and R-22
• hydrochloric acid, muriatic acid and other acid based masonry washing and curing materials
• printer’s inks, paint removers, varnishes, varsol, toluene, etc.
• Water softener salt and chemicals
2. If this furnace is to be installed in an area over a finished ceiling or living area, install a field fabricated
auxiliary drain pan under the furnace to protect that area from accidental condensate spills. The auxiliary
pan should be large enough to collect accidentally spilled condensate from the air conditioning evaporator
coil assembly if applicable.
3. If the furnace is installed in an area where freezing may occur, a garage, an attic, a crawl space or any
unconditioned space, steps must be taken to protect the condensate trap and drain line from freezing.
one possible measure could be to use a self-regulating 5 or 6 watt per foot heat tape covered with a jacket
of insulation. heat tapes are available in plumbing supply houses.
