Installation guide

66840/035-20003-001Rev.B(1205)
SAFETY REQUIREMENTS
• A manufactured (mobile) home installation must conform with the
Manufactured Home Construction and Safety Standard, Title 24
CFR, Part 3280, or when such standard is not applicable, the
standard for Manufactured Home Installations (Manufactured
Home Sites, Communities, and Set-ups)ANSI/NCS A225.1, and/
or the Canadian Standard for CANICSA Z240 MH, Series M92
Mobile Homes. Furnaces have been certified to the latest edition
of standard ANSI Z21-47 • CSA 2.3.
• Refer to the unit rating plate for the furnace model number, and
then see the dimensions page of this instruction for return air ple-
num dimensions in Figure 1. The plenum must be installed
according to the instructions.
• Provide clearances from combustible materials as listed under
Clearances to Combustibles.
• Provide clearances for servicing ensuring that service access is
allowed for both the burners and blower.
• These models are CSA listed or approved for installation into a
Modular Home or a Manufactured (Mobile) Home.
• Failure to carefully read and follow all instructions in this
manual can result in furnace malfunction, death, personal
injury and/or property damage.
• Furnaces for installation on combustible flooring shall not be
installed directly on carpeting, tile or other combustible material
other than wood flooring.
• Check the rating plate and power supply to be sure that the elec-
trical characteristics match. All models use nominal !15 VAC, 1
Phase, 60-Hertz power supply. DO NOT CONNECT THIS APPLI-
ANCE TO A 50 HZ POWER SUPPLY OR A VOLTAGE ABOVE
130 VOLTS.
• Furnace shall be installed so the electrical components are pro-
tected from water.
• Installing and servicing heating equipment can be hazardous due
to the electrical components and the gas fired components. Only
trained and qualified personnel should install, repair, or service
gas heating equipment. Untrained service personnel can perform
basic maintenance functions such as cleaning and replacing the
air filters. When working on heating equipment, observe precau-
tions in the manuals and on the labels attached to the unit and
other safety precautions that may apply.
• These instructions cover minimum requirements and conform to
existing national standards and safety codes. In some instances
these instructions exceed certain local codes and ordinances,
especially those who have not kept up with changing manufac-
tured (mobile) home and modular home construction practices.
These instructions are required as a minimum for a safe installa-
tion.
COMBUSTION AIR QUALITY
(LIST OF CONTAMINANTS)
The furnace will require OUTDOOR AIR for combustion when the fur-
nace is located in any of the following environments.
• Restricted Environments
Commercial buildings
Buildings with indoor pools
Furnaces installed in laundry rooms
Furnaces installed in hobby or craft rooms
Furnaces installed near chemical storage areas
Chemical Exposure
The furnace will require OUTDOOR AIR for combustion when the fur-
nace is located in an area where the furnace is being exposed to the fol-
lowing substances and / or chemicals.
• Permanent wave solutions
• Chlorinated waxes and cleaners
• Chlorine based swimming pool chemicals
• Water softening chemicals
De-icing salts or chemicals
Carbon tetrachloride
Halogen type refrigerants
Cleaning solvents (such as perchloroethylene)
Printing inks, paint removers, varnishes, etc.
Hydrochloric acid
Cements and glues
Antistatic fabric softeners for clothes dryers
Masonry acid washing materials
If outdoor air is used for combustion, the combustion air intake duct sys-
tem termination must be located external to the building and in an area
where there will be no exposure to the substances listed above.
_WARNING
The furnace area must not be used as a broom closet or for any
other storage purposes, as a fire hazard may be created. Never
store items such as the following on, near or in contact with the fur-
Race.
1. Spray or aerosol cans, rags, brooms, dust mops, vacuum
cleaners or other cleaning tools.
2. Soap powders, bleaches, waxes or other cleaning com-
pounds; plastic items or containers; gasoline, kerosene, ciga-
rette lighter fluid, dry cleaning fluids or other volatile fluid.
3. Paint thinners and other painting compounds.
4. Paper bags, boxes or other paper products
Never operate the furnace with the blower door removed. To
do so could result in serious personal injury and/or equipment
damage.
INSPECTION
As soon as a unit is received, it should be inspected for possible dam-
age during transit. If damage is evident, the extent of the damage
should be noted on the carrier's freight bill. A separate request for
inspection by the carrieCs agent should be made in writing. Also, before
installation, the unit should be checked for screws or bolts, which may
have loosened in transit, and have shipping or spacer brackets which
need to be removed.
FURNACE LOCATION AND CLEARANCES
The furnace shall be located usina the followina auidelines:
1. Where a minimum amount of vent piping and elbows will be
required.
2. As centralized with the air distribution as possible.
3. Where it will not interfere with proper air circulation in the confined
space.
4. Where the outdoor vent terminal will not be blocked or restricted.
Refer to "VENT CLEARANCES" located in SECTION VII of these
instructions. These minimum clearances must be maintained in
the installation.
5. Where the unit will be installed in a level position with no more
than 1/4" (0.64 cm) slope side-to-side and front-to-back to provide
proper condensate drainage.
Installation in freezina temoeratures:
1. Furnace shall be installed in an area where ventilation facilities
provide for safe limits of ambient temperature under normal oper-
ating conditions. Ambient temperatures falling below 32 ° F (0 ° C)
may result in the flue temperature falling below 260 ° F (!27 ° C) at
any point in the flue pipe. The flue products will condense in the
vent pipe if the flue temperature fails below 260 ° F (127 ° C) caus-
ing the vent pipe to deteriorate rapidly.
2. Do not allow return air temperature to be below 55° F (13 ° C) for
extended periods. To do so may cause condensation to occur in
the main heat exchanger, leading to premature heat exchanger
failure.
Unitary Products Group 3