Search found 2 matches

by PCK10
Thu Sep 10, 2015 10:21 am
Forum: Electrics Forum
Topic: Fitting 2 Wire Thermostat to a 4 Wire Main Combi 30 System
Replies: 3
Views: 8144

Re: Fitting 2 Wire Thermostat to a 4 Wire Main Combi 30 System

Hi, Thanks for the informed reply. I have looked at the diagrams online and having looked in the system, the optional timer shown on page 47 is wired up and does work, the problem with it is it doesn't keep its time very well. my plan was to disconnect the optional timers 4 cables (as you said, unkn...
by PCK10
Tue Sep 08, 2015 9:18 pm
Forum: Electrics Forum
Topic: Fitting 2 Wire Thermostat to a 4 Wire Main Combi 30 System
Replies: 3
Views: 8144

Fitting 2 Wire Thermostat to a 4 Wire Main Combi 30 System

Hi, I have a 'main combi 30 he' boiler which has a 4 wire built in timer/ thermostat. The 4 wires inside are 2 black a blue and a brown. I need to install a thermostat outside of the room that the boiler is in so I am going to run a cable to a new one. The new thermostats available are mainly 2 or 3...
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