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26. Control Options:
a. Furred-in units shall be furnished with a 3-
speed, 4-position manual fan switch on a
wall plate for field-mounting. Cabinet units
shall be furnished with a factory-installed, 3-
speed, 4-position manual fan switch.
b. Factory-installed 24-v transformer and relay
board for use, with 24-v controls by others.
c. Carrier’s Debonair
®
24-v digital display pro-
grammable or non-programmable thermo-
stat, including factory-installed 24-v
transformer, relay board, and changeover
sensors, as required. Provides automatic fan
speed control based on demand.
d. Factory-Installed Carrier Fan Coil Open
Controller: BACnet based communicating
controller with pre-programmed control
algorithms; including factory-installed 24-v
transformer, relay board, supply air sensor,
return air sensor and changeover sensor (as
required). Provides automatic fan speed con-
trol based on demand.
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