Table 10
4.Before connecting the thermostat, check to make sure the wires will be long enough for servicing at a later date. Make sure that thermostat wire is long enough to facilitate future removal of blower for service.
5.Complete the wiring connections to the equipment. Use the provided unit wiring diagram and the field wiring diagram shown in Figure 41. Use 18 gauge wire or larger that is suitable for Class II rating for thermostat connections.
6.Electrically ground the unit according to local codes or, in the absence of local codes, according to the current National Electric Code (ANSI/NFPA No. 70). A green ground wire is provided in the field
NOTE: This furnace contains electronic components that are polarity sensitive. Make sure that the furnace is wired correctly and is properly grounded.
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. See Figure 41 for control configuration. 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. See Figure 41 for control configuration. This terminal is energized in the heating mode whenever the combustion air inducer is operating.
9.One 24V “H” terminal is provided on the furnace
10.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 38% 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 11 and 12.
3.When there is a cooling demand, the indoor blower will run on the cooling speed designated by the positions of DIP switches 5 and 6.
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% RHO.
Electrical Wiring
WARNING
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.
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