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Control Training and Service Manual
DS Systems:
P3: Not Used
P4: 24 VAC Power
P4-1: Fuse 1 (24 VAC) P4-3: Fuse 3 (24 VAC)
P4-2: Fuse 2 (24 VAC) P4-4: Fuse 4 (24 VAC)
P7: Fluid Sensor
P7-1: Aquastat Sensor
P7-2: Aquastat Sensor
P8: 24 VAC Alarm Inputs
P8-1: 24 VAC (RAD1/ TS 50) P8-5: 24 VAC (HWA)
P8-2: 24 VAC (RAD2/ TS 51) P8-6: 24 VAC Out (TS 24)
P8-3: 24 VAC (RAD3/ TS 55) P8-7: 24 VAC Out (HWA)
P8-4: 24 VAC (RAD4/ TS 56) P8-8: no connection
P11: Low Pressure Switch Circuits
P11-1: DCV Signal to LPT1
P11-2: Cold Start Bypass 1 Signal
P11-3: LPT1 Input to MP
P11-4:
P11-5: DCV Signal to LPT2
P11-6: Cold Start Bypass 1 Signal
P11-7: LPT2 Input to MP
P11-8:
P12: Analog Sensor Inputs
P12-1: T+ Analog 1 (TS 41) P12-5: T+ Analog 3 (TS 45)
P12-2: T- Analog 1 (TS 42) P12-6: T- Analog 3 (TS 46)
P12-3: T+ Analog 2 (TS 43) P12-7: T+ Analog 4 (TS 47)
P12-4: T- Analog 2 (TS 44) P12-8: T- Analog 4 (TS 48)
P13: DCV Thermistor Signals
P13-1: DCV Signal to Digital Scroll Thermistor 1
P13-2: DCV Signal from Digital Scroll Thermistor 1
P13-3: DCV Signal to Digital Scroll Thermistor 2
P13-4: DCV Signal from Digital Scroll Thermistor 2
P13-5: DCV Signal to Customer Thermistor
P13-6: DCV Signal from Customer Thermistor
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