6
This product may also be installed with the ComfortNet ther-
mostat and a non-ComfortNet compatible single stage air con-
ditioning unit. However, this reduces the benefits of the
ComfortNet system as the enhancements will only apply to the
furnace.
P
RODUCT
A
PPLICATION
This furnace is primarily designed for residential home-heating
applications. It is NOT designed or certified for use in mobile
homes, trailers or recreational vehicles. Neither is it designed
or certified for outdoor applications. The furnace
must
be in-
stalled indoors (i.e., attic space, crawl space, or garage area
provided the garage area is enclosed with an operating door).
This furnace can be used in the following non-industrial com-
mercial applications:
Schools, Office buildings, Churches, Retail stores,
Nursing homes, Hotels/motels, Common or office areas
In such applications , the furnace must be installed with the
following stipulations:
•
It must be installed per the installation instructions
provided and per local and national codes.
•
It must be installed indoors in a building constructed
on site.
•
It must be part of a ducted system and not used in a
free air delivery application.
•
It must not be used as a “make-up” air unit.
•
All other warranty exclusions and restrictions apply.
This furnace may be used as a construction site heater
ONLY
if the following conditions are met:
•
The vent system is permanently installed per these
installation instructions.
•
A room thermostat is used to control the furnace. Fixed
jumpers that provide continuous heating CANNOT be
used.
•
Return air ducts are provided and sealed to the furnace.
•
A return air temperature range between 60ºF (16ºC)
and 80ºF (27ºC) is maintained.
•
Air filters are installed in the system and maintained
during construction, replaced as appropriate during
construction, and upon completion of construction are
replaced.
•
The input rate and temperature rise are set per the
furnace rating plate.
•
100% outside air is provided for combustion air
requirements during construction. Temporary ducting
can be used.
NOTE:
Do not connect the temporary duct directly to
the furnace. The duct must be sized for adequate
combustion and ventilation in accordance with the
latest edition of the National Fuel Gas Code NFPA 54/
ANSI Z223.1 orCAN/CSA B149.1 Installation Codes.
E
LECTROSTATIC
D
ISCHARGE
(ESD) P
RECAUTIONS
NOTE:
Discharge body’s static electricity before touching unit.
An electrostatic discharge can adversely affect electrical com-
ponents.
Use the following precautions during furnace installation and
servicing to protect the integrated control module from dam-
age. By putting the furnace, the control, and the person at the
same electrostatic potential, these steps will help avoid expos-
ing the integrated control module to electrostatic discharge.
This procedure is applicable to both installed and non-installed
(ungrounded) furnaces.
1. Disconnect all power to the furnace. Do not touch the
integrated control module or any wire connected to the
control prior to discharging your body’s electrostatic
charge to ground.
2. Firmly touch a clean, unpainted, metal surface of the
furnaces near the control. Any tools held in a person’s
hand during grounding will be discharged.
3. Service integrated control module or connecting wiring
following the discharge process in step 2. Use caution
not to recharge your body with static electricity; (i.e., do
not move or shuffle your feet, do not touch ungrounded
objects, etc.). If you come in contact with an ungrounded
object, repeat step 2 before touching control or wires.
4. Discharge your body to ground before removing a new
control from its container. Follow steps 1 through 3 if
installing the control on a furnace. Return any old or
new controls to their containers before touching any
ungrounded object.
T
O
T
HE
I
NSTALLER
Before installing this unit, please read this manual thoroughly
to familiarize yourself with specific items which must be ad-
hered to, including but not limited to: unit maximum external
static pressure, gas pressures, BTU input rating, proper elec-
trical connections, circulating air temperature rise, minimum or
maximum CFM, and motor speed connections, and venting.
These furnaces are designed for Category I venting only.
T
O
PREVENT
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
DUE
TO
FIRE
,
DO
NOT
INSTALL
THIS
FURNACE
IN
A
MOBILE
HOME
,
TRAILER
,
OR
RECREATIONAL
VEHICLE
.
WARNING
P
RODUCT
D
ESCRIPTION
F
EATURES
This furnace is a part of the ComfortNet™ family of products.
The CTK0* ComfortNet thermostat kit allows this furnace to be
installed as part of a digitally communicating system. The
ComfortNet system provides automatic airflow configuration,
enhanced setup features, and enhanced diagnostics. It also
reduces the number of thermostat wires to a maximum of four.
It may be also installed as part of a “legacy” system using a
standard 24 VAC thermostat.
