7
This product may also be installed with the ComfortNet ther-
mostatand a non-ComfortNetcompatible single stageaircon-
ditioning unit. However, this reduces the benefits of the
ComfortNetsystem astheenhancements willonlyapply tothe
furnace.
P
RODUCT
A
PPLICATION
Thisfurnace isprimarilydesigned forresidential 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
providedthe garage areaisenclosed with anoperating door).
This furnace can be used in the following non-industrial com-
mercialapplications:
Schools,Officebuildings,Churches,Retailstores,
Nursinghomes,Hotels/motels,Commonorofficeareas
In such applications , the furnace must be installed with the
followingstipulations:
• It must be installed per the installation instructions
providedand per localandnational 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
freeair deliveryapplication.
• It must not be used as a “make-up” air unit.
• All other warranty exclusions and restrictions apply.
Thisfurnacemaybeusedasaconstructionsiteheater ONLY if
allofthefollowingconditionsaremet:
• The vent system is permanently installed per these
installation instructions.
• Aroomthermostatisusedtocontrolthefurnace.Fixed
jumpersthat providecontinuousheating CANNOTbe
used and can cause long term equipment damage.
Bi-metal thermostats, or any thermostat affected by
vibrationmustnot be used during construction.
• Returnairductsareprovidedandsealedtothefurnace.
• A return air temperature range between 60ºF (16ºC)
and80ºF (27ºC) is maintained.
• Airfiltersareinstalledinthesystemandreplaceddaily
during construction and upon completion of
construction.
• The input rate and temperature rise are set per the
furnacerating plate.
• 100%outside air mustbeused for combustionduring
construction.Temporaryductingmaybeusedtosupply
outside air to the furnace for combustion – do not
connect this duct directly to the furnace. Size this
duct according to NFPA 54/ANSI Z223.1 section for
Combustionand VentilationAir
• The furnace heat exchanger, components, duct
system,air filters and evaporator coilsarethoroughly
cleaned following final construction clean up by a
qualifiedperson.
ELECTROSTATIC DISCHARGE(ESD)PRECAUTIONS
NOTE: Dischargebody’s staticelectricity beforetouchingunit.
Anelectrostatic discharge canadverselyaffect electrical com-
ponents.
Use the following precautions during furnace installation and
servicing to protect the integrated control module from dam-
age. Byputtingthe furnace, the control, and the person atthe
sameelectrostatic potential,thesesteps will helpavoid expos-
ing the integrated control module to electrostatic discharge.
Thisprocedure isapplicableto bothinstalledand 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
chargeto ground.
2. Firmly touch a clean, unpainted, metal surface of the
furnaces near the control. Any tools held in a person’s
handduring groundingwillbe discharged.
3. Service integrated control module or connecting wiring
following the discharge process in step 2. Use caution
nottorecharge your body with static electricity; (i.e.,do
notmoveor shuffle your feet, do not touch ungrounded
objects,etc.). Ifyou comeincontactwithanungrounded
object,repeatstep2beforetouchingcontrol 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
ungroundedobject.
TOTHE INSTALLER
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-
tricalconnections, circulatingairtemperature rise,minimumor
maximum CFM, and motor speed connections, and venting.
Thesefurnaces aredesignedfor Category Iventing 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
FEATURES
This furnace is a part of the ComfortNet™ family of products.
TheCTK0* ComfortNetthermostatkit allowsthisfurnace to be
installed as part of a digitally communicating system. The
ComfortNetsystemprovidesadvancedairflowconfiguration,en-
hanced setup features, and enhanced diagnostics. It also re-
ducesthe number of thermostatwires to a maximum offour. It
may be also installed as part of a “legacy” system using a
standard 24 VAC thermostat.
