• Looking for a smarter way to manage your heating this winter? We’ve been testing the new Aqara Radiator Thermostat W600 to see how quiet, accurate and easy it is to use around the home. Click here read our review.

HELP REPLACING HONEYWELL ST699

Joined
26 Jan 2007
Messages
1
Reaction score
0
Location
Cardiff
Country
United Kingdom
Hi all.
I need some help replacing my old honywell st699 with a new st6300a. the problem is that i have the new installation guide telling how to replace the 699 with the 6300 .
ie
st699 to 6300 L to L , N to N , 3(no) to 4(ch on) , 4(nc) to 2(ch off) , 5(com) not connected , 6(no) to 3(hw on) , 7(nc) to 1(hw off) , 8(com) not connected.

now in my 699 number 8(com) is joined number 5(com) which are then wired to the live.. and there is no wire going to 4(nc) so was wondering where to put wire these up to in the 6300.
any ideas.


 
Not familiar with the 6300 but I would imagine it has integral links.
 

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Back
Top