Ccb Socket & Wiring Terminal Identification - A.O. Smith dre-52 Service Handbook

CCB Socket & Wiring Terminal Identification
Refer to the illustration on page 42 for physical location of the sockets and wiring terminals.
J1 Socket - Transformer
PIN #
1
2
3
4
5
J2 Socket - 120 VAC Power Supply
PIN #
1
2
3
J3 Wiring Terminals - Alarm Output Relay (see page 59)
TERMINAL
N. O.
N. C.
COM
J4 Wiring Terminals - Contactor Coils
TERMINAL
OUT 1
OUT 2
OUT 3
J5 Socket - Immersion Temperature Probe/ECO
PIN #
1
2
3
4
J6 Socket - Not Used
Servicing should only be performed by a Qualified Service Agent
ELECTRONIC CONTROLS
120 VAC hot to transformer
Not used
120 VAC neutral to transformer
24 VAC out from transformer
24 VAC out from transformer
120 VAC hot
Earth Ground
120 VAC neutral
Dry Contact Output - Normally Open Terminal Alarm Output Relay
Dry Contact Output - Normally Closed Terminal Alarm Output Relay
Dry Contact Output - Common Terminal Alarm Output Relay
120 VAC hot to Heating Element Bank 1 Contactor Coils
120 VAC hot to Heating Element Bank 2 Contactor Coils
120 VAC hot to Heating Element Bank 3 Contactor Coils
ECO (energy cut out) 120 VAC hot out (red wire)
Temperature probe (thermistor) +5.0 VDC (black wire)
Temperature probe (thermistor) -5.0 VDC (black wire)
ECO (energy cut out) 120 VAC return (red wire)
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
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