8.3 Electrical connection CAUTION A fused spur or an unswitched socket must be located no more than 1 metre from the appliance. Correct earthing in accordance to applicable regulations is obligatory for the safety and functionality of the boiler. For installation in damp rooms a fixed connection is obligatory. When working on the electrical circuit always isolate the electric supply . 1. Slide the cover plate (A) (if present) to the front to remove. 2. Open the display cover and unscrew both screws to remove the front cover. 3. Pull the boiler controller unit forwards; the boiler controller will tip downwards to provide access. 4.
Consult sections § 8.3.1 and chapter 13 for making the connections. 5. After making the desired connections plug the appliance into an earthed wall socket. 8.3.1 Electrical connections Intergas Heating Ltd 26 Temperature control Connector X4 Notes External switch for keep hot facility 4 - 5 Parameter c. needs to be set to 0. See § 10.3 Room thermostat 6 – 7 Voltage free room thermostat.
Remove link 6-7 Outside temperature sensor 8 – 9 - Frost protection thermostat 6 – 7 Parallel to room thermostat Open Therm (OT) 11 – 12 Remove link 6-7 Temperature control Connector X2 Notes Room thermostat 230 V or external control 230 V 1 – 3 Remove link 6 – 7 from connector X4 Frost thermostat 230 V 1 – 3 Remove link 6 – 7 from connector X4