Carrier 59SP6A Installation, Start-Up, Operating, Service And Maintenance Instructions page 33

59SP6A: Installation, Start-up, Operating, Service and Maintenance Instructions
Accessories
(See Fig. 38
1. Electronic Air Cleaner (EAC)
Connect an accessory Electronic Air Cleaner (if used) using 1/4-in.
female quick connect terminals to the two male 1/4-in.
quick-connect terminals on the control board marked EAC-1 and
EAC-2. The terminals are rated for 115VAC, 1.0 amps maximum
and are energized during blower motor operation.
Connect an accessory 24 VAC, 0.5 amp. maximum humidifier (if used)
to the 1/4-in. male quick-connect HUM terminal and COM-24V screw
terminal on the control board thermostat strip.
NOTE: If the humidifier has its own 24 VAC power supply, an isolation
relay may be required. Connect the 24 VAC coil of the isolation relay to
the HUM and COM/24V screw terminal on the control board thermostat
strip. See Fig. 38.
2. Humidifier (HUM)
The HUM terminal is a 24 VAC output, energized when the blower is
operating during a call for heat.
3. Twinning Connector
The furnace can only be controlled by a single or two-stage
thermostat. A Communicating User Interface will not operate this
furnace when connected to the Communication Connector. The
Communication Connector on the furnace control board is only for
communication between furnaces twinned together using a factory
accessory twinning kit. Only select sizes can be twinned, refer to
Twinning Kit instructions for list of approved furnaces. See
Alternate Power Supplies
This furnace is designed to operate on utility generated power which has
a smooth sinusoidal waveform. If the furnace is to be operated on a
generator or other alternate power supply, the alternate power supply
must produce a smooth sinusoidal waveform for compatibility with the
furnace electronics. The alternate power supply must generate the same
voltage, phase, and frequency (Hz) as shown in
rating plate.
Power from an alternate power supply that is non-sinusoidal may
damage the furnace electronics or cause erratic operation.
Contact the alternate power supply manufacturer for specifications and
details.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
and Fig. 39.)
Table 11 or the furnace
Fig. 39.
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