Instruction manual

Fan Coils—EAC (120v) MUST be wired to fan coil circuit board
terminals EAC 1 and EAC 2 if applicable, ONLY as shown in Fig.
15. Terminals EAC 1 and EAC 2 supply 240vac. Terminal EAC 1
is energized continuously. Terminal EAC 2 is energized only with
the fan motor.
FINAL ASSEMBLY
Kit No. KFAIR0101ACR is offered for use when 24vdc relays
may not be available. The kit contains a 24vdc relay which mounts
directly inside the EAC cabinet. User supplied 110vac is activated
be this relay to power the air cleaner when G or W are present.
This preferred connection allows low-voltage wiring to be run
between the fan coil and the air cleaner and eliminates the
problems of controlling a 110vac air cleaner from the 230v power
supplied by the fan coil. (See Fig. 16.)
The ICM2 blower motor used in the FK4B Fan Coil is controlled
by low-voltage signals. The familiar 230vac air cleaner
control/power signal, EAC 1 and EAC 2, is not available. These
signals are replaced by a 24vdc signal which is provided at circuit
board terminals AUX 1 and AUX 2. This 24vdc signal is present
when either G or W is present and is active in all heating and
cooling modes.
In heat pump applications, the G signal is present in both cooling
and heating modes, permitting the EAC to be controlled from the
G signal only. For the application, a user supplied 24vac relay can
be driven by the G terminal, eliminating the need for the relay kit.
The selection and mounting of this AC relay is the responsibility
of the installer.
Fig. 7—Installing Baffles if Needed
A91472
BAFFLES
FURNACE
ELECTRONIC
AIR CLEANER
Fig. 8—Reversing Components for Opposite Air-
flow
A91473
IONIZER
WIRES
PREFILTERS
PROPER
CONTACT
SPRING
LOCATION
CHARGED
COLLECTOR
PLATES
AIRFLOW AIRFLOW
Fig. 9—Line-to-Line Wiring Diagram
A89073
UNIT
POWER
SUPPLY
Y
BLU
BLU
BLU
BLU
LED
WHT
LINE
VOLTAGE
BLK
HIGH
VOLTAGE
BLK
WHT
*
TRANSFORMER
ASSY. FOR
FIELD CONN.
BLK
WHITE
POWER
SWITCH
INTERLOCK
(DO NOT
BYPASS)
WIRE CONN.
BLK
WHITE
GREEN FIELD WIRED
GROUND
FIELD WIRING
*
ON 208/240 UNITS ONLY
OPERATION LIGHT
Fig. 10—Wire Routing
A94155
TOP PLUG
WIRE COVER FOR
CHANNEL
INTERNAL
POWER WIRE
ROUTING
GROUND
FURNACE
CONTROL
BOARD
BUSHING HOLES
FURNACE
BUSHING HOLES
6