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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Central heating programmer
Trying to replace broken CH programmer. Old, not even sure of type but
wiring is as follows. 3 cables coming in. G N L 123456 Earth - 3 Green N - 1 Blue, 2 Black L - 1 Red , 2 Red jumper wires going to contacts 2 and 5 1 - 1 Brown 2 - Red Jumper from L 3 - Empty 4 - 1 Brown 5 - Red Jumper from 2 (Live) 6 - Empty 1-on 2-C 3-Off 4-On 5-C 6-Off I want to put Drayton SM2 Mechanical timer on this. On Drayton Wiring is N L HWOff CHOff HWOn CHOn Would the wiring be like this? N - Blue, Black, Black as above. L - Red As above HWOff Nothing CHOff Nothing HWOn Brown CHOn Brown Earth - Earth as above. No Jumpers. Thank you for your time. |
#2
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Central heating programmer
In message .com,
Diablo360 writes Trying to replace broken CH programmer. Old, not even sure of type but wiring is as follows. 3 cables coming in. G N L 123456 Earth - 3 Green N - 1 Blue, 2 Black L - 1 Red , 2 Red jumper wires going to contacts 2 and 5 1 - 1 Brown 2 - Red Jumper from L 3 - Empty 4 - 1 Brown 5 - Red Jumper from 2 (Live) 6 - Empty 1-on 2-C 3-Off 4-On 5-C 6-Off I want to put Drayton SM2 Mechanical timer on this. On Drayton Wiring is N L HWOff CHOff HWOn CHOn Would the wiring be like this? N - Blue, Black, Black as above. L - Red As above HWOff Nothing CHOff Nothing HWOn Brown CHOn Brown Earth - Earth as above. No Jumpers. Thank you for your time. Who knows ? Without even a clue as to which make/model I would have expected 2-3 and 5-6 to be the "ON" contacts Why don't you try and understand what's going on, then you are more likely to get it right -- geoff |
#3
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Central heating programmer
In message , raden
writes In message .com, Diablo360 writes Trying to replace broken CH programmer. Old, not even sure of type but wiring is as follows. 3 cables coming in. snip I want to put Drayton SM2 Mechanical timer on this. On Drayton Wiring is N L HWOff CHOff HWOn CHOn Would the wiring be like this? snip Thank you for your time. Who knows ? Without even a clue as to which make/model I would have expected 2-3 and 5-6 to be the "ON" contacts Why don't you try and understand what's going on, then you are more likely to get it right Indeed, a couple of suggestions to the OP. Post a piccie somewhere (not on the group) of the old one. some one may well know it. 2. Try to work out what the various cables coming in are to/from -- Chris French |
#4
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Central heating programmer
raden wrote:
In message .com, Diablo360 writes Trying to replace broken CH programmer. Old, not even sure of type but wiring is as follows. 3 cables coming in. G N L 123456 Earth - 3 Green N - 1 Blue, 2 Black L - 1 Red , 2 Red jumper wires going to contacts 2 and 5 1 - 1 Brown 2 - Red Jumper from L 3 - Empty 4 - 1 Brown 5 - Red Jumper from 2 (Live) 6 - Empty 1-on 2-C 3-Off 4-On 5-C 6-Off I want to put Drayton SM2 Mechanical timer on this. On Drayton Wiring is N L HWOff CHOff HWOn CHOn Would the wiring be like this? N - Blue, Black, Black as above. L - Red As above HWOff Nothing CHOff Nothing HWOn Brown CHOn Brown Earth - Earth as above. No Jumpers. Thank you for your time. Who knows ? Without even a clue as to which make/model I would have expected 2-3 and 5-6 to be the "ON" contacts Why don't you try and understand what's going on, then you are more likely to get it right i agree geoff after recently fiddling with my own progammer recently, the old one had no instructions or indication of what the wire was for, i had to literally walk round the system to find out which wires went where and what they did when they got there! still managed to get a shock tho! and it worked a dream when i'd finnished installing the new one. i have sellotaped the new programmer instructions to the boiler access panel for safe keeping too! |
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