Technical data

Boiler Installation Sequence 5

Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R1 21

Abb. 0.0 Bildunterschrift

Fig. 5.13: Connection wiring

NL987

543

24V

230V

5.16 Electronic board layout

Socket X2 for internal unit components

Socket X4 for diverter valve

Socket X7 for accessory box connection

Socket X8 for VRC-VC connection

Room thermostat, 230 V: connections 3, 4 and 5

Mains power supply: connections L, N and earth

Socket X12: pump connection

Socket X14: gas valve connection

Socket X13: fan connection

Do not use!

Socket for fan control cable (637 and 837 only)