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Blower Speed
The blower speed is preset at the factory for fan only, heating,
and cooling operation. These factory settings are listed in
Table 5 (page 20)
and
system performance and comfort, it may be necessary to
change the factory set speed.
CAUTION:
To avoid personal injury or property damage, make
sure the motor leads do not come into contact with
any uninsulated metal components of the unit.
5-Speed ECM Motor
• Shut off all electrical power to the unit and remove the
control panel. NOTE: The furnace board has slide switches
to select between blower speeds that are preset from the
factory. The heat, cool, and fan speed can be changes by
sliding the switch from the available options of L-Low. ML-
Medium Low, MH-Medium High, H-High. The blower motor
speeds increase as the switch is moved from Low to High.
• A movable jumper beside the blower speed slide switches
change fan speed(G call). The fan speed is preset from
the factory for the Lowest blower speed L. Changing this
position of the jumper one setting at a time will increase the
fan speed.
Optional Furnace Control Board Connections
Electronic Air Cleaner
The furnace control board provides output terminals for an
optional electronic air cleaner (EAC) that can be installed in the
return air duct of your system. THE EAC output is energized
any time the HEAT or COOL blower speed is energized.
Control ratings are 1.0 Amp. @ 240 VAC. Output connections
are made via board terminals labeled EAC and NEUTRAL.
Humidifier
The furnace control board provides output terminals for
an optional humidifier (HUM) that can be installed on your
system. The HUM output is energized any time the furnace
inducer motor is energized. Control ratings are 1.0 Amp. @
240 VAC. Output connections are made via board terminals
labeled HUM and NEUTRAL.
Check all factory wiring to the units wiring diagram. Inspect the
factory wiring connections to be sure none loosened during
shipping or installation.
12
Table 6 (page
21). For optimum
GAS SUPPLY & PIPING
WARNING:
FIRE OR EXPLOSION HAZARD
• Failure to follow safety warnings exactly could result
in serious injury, death, or property damage.
• Installation and service must be performed by a
qualified installer, service agency or the gas supplier.
• Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• Leave the building immediately.
• Immediately call your gas supplier from a neighbor's
phone. Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire
department.
AVERTISSEMENT:
RISQUE D'INCENDIE OU D' EXPLOSION
• Le non-respect des avertissements de sécurité
pourrait entraîner des blessures graves, la mort ou
des dommages matériels.
• L'installation et l'entretien doivent être effectués par
un installateur qualifié, un organisme de service ou
le fournisseur de gazstaller, service agency or the
gas supplier.
• Ne pas entreposer ni utiliser de l'essence ni d'autres
vapeurs ou liquides inflammables dans le voisinage
de cet appareil, ni de tout autre appareil.
QUE FAIRE S'IL Y A UNE ODEUR DE GAZ
• Ne pas tenter d'allumer aucun appareil.
• Ne toucher à aucun interrupteur électrique; n'utiliser
aucun téléphone dans le bâtiment.
• Évacuer l'immeuble immédiatement.
• Appeler immédiatement le fournisseur de gaz en
employant le téléphone d'un voisin. Respecter à la
lettre les instructions du fournisseur de gaz.
• Si personne ne répond, appeler le service des
incendies.
• All gas piping must be installed in compliance with
local codes and utility regulations. In the absence of
local codes the gas line installation must comply with
the latest edition of the National Fuel Gas Code ANSI
Z223.1 or CAN/CGA B149 Installation Codes.
• Some local codes require the installation of a manual
main shut-off valve and ground joint union external to the
unit. The shut-off valve should be readily accessible for
service and/or emergency use. Consult the local utility
or gas supplier for additional requirements regarding
placement of the manual main gas shut-off. See
7 (page
13).
• The manifold pressure must be set to the appropriate
value for your installation. Refer to the Manifold
Pressure Adjustment section
instructions.
Figure
(page
15) for adjustment
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