Technical data

Installation, user and maintenance manual – GAHP-GS/WS
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6.1 ELECTRICAL DIAGRAM OF THE APPLIANCE
Figure 6.5 – Appliance internal wiring diagram
LEGEND SCH1 S61 circuit board SCH2 W10 circuit board SCH3 Mod10 circuit board TER Appliance power terminal block CNTBOX Flame controller PWRTR Board transformer BLW Blower PMP Hydraulic pump IGNTR Ignition transformer IGN Ignition electrodes
FLS Flame sensor LS Gas valve ON indicator lamp GV Gas solenoid valve THMF Cold water delivery temperature sensor THRF Cold water return temperature sensor TMIX Combustion air temperature sensor TA Ambient air temperature sensor TG Generator temperature sensor THMC Hot water delivery temperature sensor THRC Hot water return temperature sensor REED Hydraulic pump rotation sensor
TF Fumes temperature sensor or generator fin sensor TC Manual fumes thermostat TL Generator limit thermostat FM Hot side flowmeter FL Renewable source water flow switch CWS Condensation water sensor MA Terminal block TK Condensate discharge heating element thermostat FS Condensate hose heating element