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7. One line voltage "EAC" 1/4" spade terminal is provided
on the furnace integrated control. Any electronic air
cleaner or other accessory rated up to one amp can
be connected to this terminal with the neutral leg of the
circuit being connected to one of the provided neutral
terminals. This terminal is energized when the indoor
blower is operating.
8. One line voltage "HUM" 1/4" spade terminal is provided
on the furnace integrated control. Any humidifier rated
up to one amp can be connected to this terminal with the
neutral leg of the circuit being connected to one of the
provided neutral terminals. This terminal is energized in
the heating mode whenever the combustion air inducer
is operating.
9. Install the room thermostat according to the instructions
provided with the thermostat. If the furnace is being
matched with a heat pump, refer to the instruction
packaged with the dual fuel thermostat.
Indoor Blower Speeds
1. When the thermostat is set to "FAN ON," the indoor
blower will run continuously at approximately 50% of the
second stage cooling speed when there is no cooling
or heating demand.
2. When this unit is running in the heating mode, the indoor
blower will run on the heating speed designated by
the positions of DIP switches 1 (A,B,C,D) of the HEAT
jumper plug. See Figure 54.
3. When there is a cooling demand, the indoor blower will
run on the cooling speed designated by the positions
of DIP switches (A, B, C, D) of the COOL jumper plug.
See Figure 54.
Generator Use - Voltage Requirements
The following requirements must be kept in mind when
specifying a generator for use with this equipment:
•
The furnace requires 120 volts ± 10% (Range: 108 volts
to 132 volts).
•
The furnace operates at 60 Hz ± 5% (Range: 57 Hz to
63 Hz).
•
The furnace integrated control requires both polarity
and proper ground. Both polarity and proper grounding
should be checked before attempting to operate the
furnace on either permanent or temporary power.
•
Generator should have a wave form distortion of less
than 5% THD (Total Harmonic Distortion).
Page 38 of 58
Electrical Wiring
Risk of electrical shock. Disconnect electrical power
at the circuit breaker or service panel before making
electrical connections. Failure to disconnect power
supplies can result in property damage, personal injury,
or death.
The furnace must be grounded and wired in accordance
with local codes or, in the absence of local codes, with the
National Electrical Code ANSI/NFPA No. 70 (latest edition)
and/or CSA C22.1 Electrical Code (latest edition) if an
external electrical source is utilized.
In all instances, other than wiring for the thermostat, the
wiring to be done and any replacement of wire shall conform
with the temperature limitation for Type T wire –63°F (35°C)
rise.
Connect a sufficiently sized wire with ground to the furnace's
line voltage connections and ground wire. Refer to the
furnace rating plate for electrical characteristics to be used
in sizing field supply wiring and overcurrent protection.
The line voltage supply should be routed through a readily
accessible disconnect located within sight of the furnace.
A junction box on the furnace side panel is provided for line
voltage connections. Refer to the furnace wiring diagram
for specific connection information.
Proper polarity of the supply connections ("HOT" and
"NEUTRAL") must be observed to ensure that safety
controls provide the protection intended.
A connection to the unit's ground wire and actual earth
ground (typically a ground stake or buried steel pipe) must
be maintained for proper operation.
Thermostat
Install a room thermostat according to the instructions
furnished with it. Select a location on an inside wall that is
not subject to drafts, direct sunshine, or other heat sources.
The initial heat anticipator setting should be equal to the total
current draw of the control circuit. Low voltage thermostat
connections are to be made to the integrated ignition/blower
control board as indicated on the wiring diagram.
Issue 1621
WARNING
507052-04
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