honeywell cmt927 to vailllant 837

[colw1]

hi I am in the process of putting a honeywell cmt927 to my vaillant ecotec plus 837 but would like to know how I would connect this to the boiler and what wire is needed
thanks col

 

[simond]

A and B on the CM, goes to 3 and 4 on the boiler, polarity is not important.

Remove the 3 and 4 link on the boiler if yours has one.

Connect L and N to the CM from the boiler L & N.

Five core cable is neatest.

 

[colw1]

thanks for the responce but what size do I need on the cable as I have seen five core only on ribbon cable but surely this wont take mains power

 

[mickyg]

http://www.tlc-direct.co.uk/Main_Index/Cable_Index/Flex_White_3/index.html

 

[gaspro1981]

are these honeywell controllers any good

 

[simond]

3185Y in 0.75mm

or two lengths of 3183Y (3 core).

 

[bengasman]

http://www.tlc-direct.co.uk/Main_Index/Cable_Index/Flex_White_3/index.html

Isn't 0.75 the minimum allowed on boilers for mechanical strength reasons?

 

[landyandy]

are these honeywell controllers any good

Fitted one last week and they seem quality.
Pretty simple to use.
£75 +vat from plumbase.

Andy.

 

[mickyg]

http://www.tlc-direct.co.uk/Main_Index/Cable_Index/Flex_White_3/index.html

Isn't 0.75 the minimum allowed on boilers for mechanical strength reasons?

scroll down

 

[bengasman]

Type slowly, and use simple, clear wording; it is sunday morning.

 

[mickyg]

not sure what your on about fella.
hows this?
http://www.tlc-direct.co.uk/Products/CA0dot75HR5.html

hope my link is now to your satisfaction

 

[bengasman]

Sunday morning: brain activity reduced by 80%, bit like a pc on stand-by; it is on, but the screen is completely blank.