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cheers i have had this room stat for a week now and was scared to wire it up. i reckon the p.c.b board for my boiler is expensive, so what do you do i ask myself??? you ask thr people that know hmmmmm the more people i ask. the more confused i get :? i am going to go for it...

not so sure, take a look at the wiring diagram. http://www.buildingtechnologies.siemens.co.uk/NR/rdonlyres/F422E4D8-ECB4-45B9-8B7D-1F6306C221EB/0/rev100_d.pdf

my boiler is the ferolli optimax he 38c and it stats that the the connections from the stat need to be voltage free

hi can any1 help i have just brought a new room stat (model siemens rev100) and the one i need for my boiler has to be voltage free contacts, now have been to plumbing and heating shops and they dont seam to have a clue on how this thing wires up. there is a wiring diagram inclueded but its...

no :lol:

have you got a ambient air temp display in car. diconnect sensesor should see three lines. reconnect should come back on simple :lol:

ambient air temp sensor, thats what it is :roll:

what do these valves do and what are the benefits of them, Siemens 22MM 3 Port Mid Position Valve.

hi every1 , i brought a siemens room thermostat for my ferolli optimax 38c boiler and the instructions supplied by siemens are pants, can any one point me in the right direction on how too wire this thing up plzzz, oh the model no. is siemens rv100 room stat. cheers