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CTU UNIT HEATERS INSTALLATION OPERATION AND SERVICE MANUAL
22
10.9 CTUD Wiring Diagram (Models 75-115)
S 4563 C Honeywell
L
N
E
COMBUSTION FAN
NC\P(2)
Pressure Switch
Detail
NO\P(3)
C \P(1)
BLACK
YELLOW
WHITE
PRESSURE SWITCH
BLUE
PINK
GREY
PURPLE
LOCKOUT
RUN
GREEN/YELLOW
BLACK
WHITE
YELLOW
GREEN/YELLOW
BROWN
BLUE
BROWN
BLUE
MAINS FILTER
BLACK
SENSE
IGNITION
BLACK
BROWN
BLUE
SITE
WIRING
N L 1 2 3 7 8
REMOTE LOCKOUT RESET
REMOTE LOCKOUT INDICATION
THERMOSTAT
LINE
NEUTRAL
GROUND
230 V
1 Ø
50 Hz
BROWN
RED
Thermostat Limit
Thermodisc N/C
BROWN
Time Delay Relay
BLUE
BROWN
BROWN
LOCKOUT
RESET
NOTE:
For external fan wiring,
See Page 23, Section 10.10.
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.