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Instructions for the installer
Internal connections
P: . . . . . . . . . . . . . . . . . boiler pump
V:. . . . . . . . . . . . . . . . . brushless fan
VG: . . . . . . . . . . . . . . . gas valve
MDV: . . . . . . . . . . . . . electric deviating valve
DK: . . . . . . . . . . . . . . . low water pressure swich
TS: . . . . . . . . . . . . . . . heating flow safety thermostat
FT: . . . . . . . . . . . . . . . flue gas thermostat
APS: . . . . . . . . . . . . . . air pressure switch
FL: . . . . . . . . . . . . . . . . DHW flow switch
SR: . . . . . . . . . . . . . . . return NTC temperature probe 10k Ohm a 25°C B=3435
SS: . . . . . . . . . . . . . . . NTC DHW probe 10k Ohm at 25 °C B=3435
SM: . . . . . . . . . . . . . . . CH NTC temperature probe 10k Ohm a 25°C B=3435
PWM P: . . . . . . . . . . . PMW signal cable for circulation pump
PWM V: . . . . . . . . . . . PMW signal cable for fan
E: . . . . . . . . . . . . . . . . . ignition/flame detection electrode
Connections performed by the installer
1-2: . . . . . . . . . . . . . . . NTC external probe 10k Ohm at 25 °C B=3977 or ambient NTC probe 10k Ohm at 25°C B=3977 (SEXT/SAMB)
3-4: . . . . . . . . . . . . . . . room thermostat or Remote Control (TA-CR)
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