A.O. Smith BTX 100 Service Handbook page 45

CCB CoNNECTIoN IDENTIFICATIoN (CoNT)
J7 Socket - Temperature Probe/ECo (immersion probe)
pin #
1 ECo (energy cut out) 24 VAC out (red wire)
2 Temperature Sensor (thermistor) +5.0 VdC (black wire)
3 Temperature Sensor (thermistor) -5.0 VdC (black wire)
4 ECo (energy cut out) 24 VAC return (red wire)
J9 Port - Communication Port - Not Used
J10 Socket - Not Used
J11 Port - Communication Port - Not Used
J13 socket - blower speed Control
pin #
1 not used
2 not used
3 To 5 pin PWM wiring socket on Combustion Blower, see Figure 7 on page 11
4 not used
5 not used
6 not used
7 To 5 pin PWM wiring socket on Combustion Blower, see Figure 7 on page 11
8 To 5 pin PWM wiring socket on Combustion Blower, see Figure 7 on page 11
J15 Socket - Not Used
J16 Port - Communication Port - UIM Display (User Interface Module)
Servicing should only be performed by a Qualified Service Agent
desCription
desCription
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