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CTU UNIT HEATERS INSTALLATION OPERATION AND SERVICE MANUAL
16
10.3 CTUA Wiring Diagram (Models 22-60)
IGNITION MODULE
BLACK
Plug in Connection to Gas Valve
S4565C 1017 Control
Honeywell
BLACK
SENSE
IGNITION
230 V
1 Ø
50 Hz
IGNITION MODULE
LOCKOUT
GAS VALVE
RUN
1112 7910 8 564
SITE WIRING
23 1
E
N L 1 2 3 7 8
BLUE
BROWN
BLUE
MAINS FILTER
Pressure Switch
Detail
WHITE
YELLOW
BLACK
Thermostat Limit
Thermodisc N/C
BROWN
BROWN
RED
RED
AXIAL FAN
COMBUSTION
FAN
N
L
E
N
L
REMOTE LOCKOUT RESET
REMOTE LOCKOUT INDICATION
THERMOSTAT
REMOTE FAN ON
LINE
NEUTRAL
GROUND
YELLOW
BLACK
WHITE
PRESSURE SWITCH
GREEN/YELLOW
BLACK
BROWN
BROWN
BROWN
YELLOW
BLUE
WHITE
PINK
PURPLE
GREY
NO\P(3)
C\P(1)
NC\P(2)
GREEN/YELLOW
BLUE
BROWN
BLUE
BROWN
Time Delay Relay
LOCKOUT
RESET
NOTE:
If any of the original wire supplied with
the heater must be replaced, it must be
replaced with wiring material having a
temperature rating of at least 105° C
and 600 volts.