Im looking to replace my honeywell st7100 timer with st6400c (apparantly direct replacement). I wondered where the plan wiring centre is, is it the base behind the 7100, lots of cables in there! is it poss to upload pics to show??
wiring centre- where is it?
- Thread starter ant_j
- Start date
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its usually near the valves
but if its a straight swap why are you worrying, just take off the old programmer and insert the new one on the back plate, easy
makes sure that you have safety isolated the elastic trickery before you do, cos it will be shocking if you dont
but if its a straight swap why are you worrying, just take off the old programmer and insert the new one on the back plate, easy
makes sure that you have safety isolated the elastic trickery before you do, cos it will be shocking if you dont
its not a straight swap, the back plate to the 7100 has terminals 1->6 live, neutral. Then still in backplate but not to timer are earth(3 wires), another neutral (3 wires) and 3x spare 2 with 2 cables in, 1 empty! So would this be more wiring centre? If not will the other be near my hot tank?
i would advise you get a programmer with the same back plate
if not doesnt your existing programmer have a wiring diagramm on the back so as you can connect the tright wire to the right terminal?
why do you need the central wiring centre for this, mucking around in there when you are not 100% sure is dangerous and a bit silly, lose one wire and you have no heating or hot water?
if not doesnt your existing programmer have a wiring diagramm on the back so as you can connect the tright wire to the right terminal?
why do you need the central wiring centre for this, mucking around in there when you are not 100% sure is dangerous and a bit silly, lose one wire and you have no heating or hot water?
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B
breezer
corgiman said:
I like that one
The thing is m8 you should be telling us you are on the scene. If you can't work out how to look for the main wiring centre how do you expect us to help?
Depends on the age of the system but a good place to start is the zone or mid pos valve/s. airing cupboard boiler location, on an older system wired by a plumber you might even be looking for a single socket backbox stuffed full of individual connections from a connecting strip, with no indication of what's what..
You have to isolate power, go to every point like rstat cylstat pump boiler etc etc twist a pair of wires at each termination and continuity test at centre end to identify each pair. Then mark them, then you know what's what for your new controller.
Or just wing it, whatever.
Depends on the age of the system but a good place to start is the zone or mid pos valve/s. airing cupboard boiler location, on an older system wired by a plumber you might even be looking for a single socket backbox stuffed full of individual connections from a connecting strip, with no indication of what's what..
You have to isolate power, go to every point like rstat cylstat pump boiler etc etc twist a pair of wires at each termination and continuity test at centre end to identify each pair. Then mark them, then you know what's what for your new controller.
Or just wing it, whatever.
W
wilhelm
well put in a new wiring center. as your old programmer sounds like its being used as one. i just rip all wires and as mr barker says you will have to ring out the cables to ascertain where they go. and then follow the honeywell plan for your particuliar sytem.
a wiring centre is only a fiver.
a wiring centre is only a fiver.
thanks for your help. this is what is behind the timer.
http://www.sendspace.com/file/8f8py4
I know if i make sure all wires are connected will work. I know to romove the live link too, but making sure the orange one is still in live!
http://www.sendspace.com/file/8f8py4
I know if i make sure all wires are connected will work. I know to romove the live link too, but making sure the orange one is still in live!
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