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Fig. 2—Return-Air Temperature
Improper installation, adjustment, alteration, service, mainte-
nance, or use can cause carbon monoxide poisoning, explo-
sion, fire, electrical shock, or other conditions which may
cause personal injury, loss of life, or property damage.
Consult a qualified installer, service agency, local gas sup-
plier, or your distributor or branch for information or assis-
tance. The qualified installer or agency must use only
factory-authorized and listed kits or accessories when modi-
fying this product. A failure to follow this warning can cause
electrical shock, fire, personal injury, or death.
For high-altitude installations, the high-altitude conversion kit
MUST be installed at or above 5500 ft above sea level.
For accessory installation details, refer to the applicable installa-
tion literature.
NOTE: Remove all shipping brackets and materials before oper-
ating the furnace.
CODES AND STANDARDS
Before installing the furnace in the United States, refer to the
current edition of the NFGC and the NFPA 90B. For copies of the
NFGC and the NFPA 90B contact the National Fire Protection
Association Inc., Batterymarch Park, Quincy, MA 02269; or the
American Gas Association, 1515 Wilson Boulevard, Arlington,
VA 22209.
Before installing the furnace in Canada, refer to the current edition
of the NSCNGPIC. Contact Standards Sales, CSA International,
178 Rexdale Boulevard, Etobicoke, (Toronto) Ontario, M9W 1R3
Canada.
Installations must comply with applicable regulations of serving
gas supplier and local building, heating, plumbing, or other codes
in effect in area in which installation is made. In absence of local
codes, installation must conform with NFGC in the United States
and the NSCNGPIC in Canada.
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
Electrostatic discharge can affect electronic components.
Take precautions during furnace installation and servicing to
protect the furnace electronic control. Precautions will pre-
vent electrostatic discharges from personnel and hand tools
which are held during the procedure. These precautions will
help to avoid exposing the control to electrostatic discharge
by putting the furnace, the control, and the person at the same
electrostatic potential.
1. Disconnect all power to the furnace. DO NOT TOUCH THE
CONTROL OR ANY WIRE CONNECTED TO THE CON-
TROL PRIOR TO DISCHARGING YOUR BODY'S ELEC-
TROSTATIC CHARGE TO GROUND.
2. Firmly touch a clean, unpainted, metal surface of the furnace
A93042
chassis which is close to the control. Tools held in a person's
hand during grounding will be satisfactorily discharged.
3. After touching the chassis you may proceed to service the
control or connecting wires as long as you do nothing that
recharges your body with static electricity (for example; DO
NOT move or shuffle your feet, DO NOT touch ungrounded
objects, etc.).
4. If you touch ungrounded objects (recharge your body with
static electricity), firmly touch furnace again before touching
control or wires.
5. Use this procedure for installed and uninstalled (ungrounded)
furnaces.
6. Before removing a new control from its container, discharge
your body's electrostatic charge to ground to protect the
control from damage. If the control is to be installed in a
furnace, follow items 1 through 5 before bringing the control
or yourself into contact with the furnace. Put all used AND
new controls into containers before touching ungrounded
objects.
7. An ESD service kit (available from commercial sources) may
also be used to prevent ESD damage.
Step 1—General
Do not install furnace in a corrosive or contaminated atmo-
sphere. Make sure all combustion and circulating air require-
ments are met in addition to all local codes and ordinances.
Do not use this furnace during construction when adhesives,
sealers, and/or new carpets are being installed and curing. If
the furnace is required during construction, use clean outside
air for combustion and ventilation. Compounds of chlorine
and fluorine, when burned in combustion air, form acids
which will cause corrosion of the heat exchangers and metal
vent system. Some of these compounds are released from
paneling and dry wall adhesives, paints, thinners, masonry
cleaning materials, and many other solvents commonly used
in the construction process. Excessive exposure to contami-
nated combustion air will result in safety and performance
related problems.
3
LOCATION
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