Collector (S1)
Tank Bottom (S2)
Tank Top (S3)
DHW (S4)
Production Loop Cold (RPS)
Production Loop Hot (VFS)
Collector Pump Relay (R1)
Indirect Heating Pump Relay (R2)
Booster Pump Relay (R3)
Production Loop Pressure (RPS)
Production Loop Flow (VFS)
Outdoor Ambient Temp