Installation Manual

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Daughter Board
When non-communicating equipment is used, the daughter
board may be needed. The daughter board provides outputs
for non-communicating indoor equipment and non-communi-
cating outdoor equipment. The daughter board should be
used in the following applications:
S Non-communicating indoor unit with non-communi-
cating outdoor unit.
S Communicating furnace with any non-communicat-
ing heat pump.
S Communicating furnace with any non-communicat-
ing two-stage A/C or HP.
S Communicating fan coil with any non-communicating
two-stage A/C or HP.
S Communicating outdoor unit with any non-communi-
cating indoor furnace or fan coil.