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Control Training and Service Manual
P38: Smoke Detector
P38-1: 24 VAC Out SDC) P38-3: 24 VAC (RAD1)
P38-2: E4 (SDC) P38-4: no connection
P39: Firestat & Remote Shutdown
P39-1: 24 VAC Out (HTS) P39-3: 24 VAC Out (RDS1)
P39-2: 24 VAC Return (HTS) P39-4: 24 VAC Return (RSD1)
P40: Basic Unit Connections
P40-1: no connections P40-8: E4 (Opt. CPAR)
P40-2: no connections P40-9: no connection
P40-3: no connections P40-10: E4
P40-4: 24 VAC Out (Opt. CPAR) P40-11: no connection
P40-5: no connections P40-12: 24 VAC Out (MF Ovld)
P40-6: no connections P40-13: 24 VAC
P40-7: no connections
P43: T6 Transformer
P43-1: 24 VAC Gnd
P43-2: 24 VAC
P51: Hot Water Reheat
P51-1: 24 VAC Out P51-3: H.W. Mod (0 – 2.5 VDC)
P51-2: -5 VDC Gnd P51-4: 24 VAC Gnd (E1)
P52: Glycool Valve (Opt. Pressure Modulating)
P52-1: 24 VAC Out P52-4: 24 VAC Gnd (E1)
P52-2: -5 VDC Gnd P52-5: no connection
P52-3: Mod Valve (0 – 2.5 VDC)
P53:
P53-1: 24 VAC
P53-2: no connection
P53-3: no connection
P53-4: E3
P53-5: no connection
P54:
P54-1: 24 VAC
P54-2: no connection
P54-3: no connection
P54-4: E3
P54-5: no connection
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