
50
5) The use of a frost thermostat on the boiler is not recommended since
the boiler provides internal automatic protection, as long as the mains
electricity and gas to the boiler are on. However, if frost protection is
necessary for the system, please contact the boiler supplier.
6) Safety Check. After installation or in the event of an electrical fault,
the electrical system should be checked for short circuits, fuse failure,
incorrect polarity of connections, earth continuity and resistance to
earth.
7) Electronic board wiring diagram is showed on Fig 25.
*Refer to detail-X in Fig. 25. if there is no need for room thermostat .