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hi been asked to wire a red compact 35 biomass to existing s plan and instalation guide rubbish (been translated from italian).anybody wired one before think i got it just wanted to ask a couple of questions if poss ie assume terminal 1 and 2 are volt free and are for the room stat through...

hi strange problem with 105e.fixed hundreds of these boilers n never had this one hope someone can help. boiler sits fine in standby but when you request either dhw or heating pumps cycles off and on 5 or 6 times then fan starts and fires but the indicator light for dhw or heating does not...

hi a question i am sure u all had thousand times before but when main bonding a gas meter i know it is ment to be bonded at meter or as close as poss.but in some cases this is impossible (unless u go over the roof lol) ie 600 mm.some tell me this rule is golden but some bodies tell you as...

see the new isar is out with complete new water set.grunfoss pump honeywell div head and dhw therm in much better place n new prv.lets hope its much betterdefo better to work on!!