Evohome issue, relays activating together

Joined
16 Jan 2017
Messages
11
Reaction score
1
Country
United Kingdom
Hi guys

Upgrading from Honeywell tr6 to evohome.

Target setup is quite simple for time being.
1 zone heating, and hot water tank on a sundial s plan. Essentially what tr6 was doing.

Tr6 essentially has 2 output connectors, one for hot water demand and one for heating.

I got 2 relays BDR91, one to drive each wire.

Question is I cannot for the life of me get evohome to manage these independently. Best setup I've managed is when there is heating demands, the relevant BDR91 triggers, but when's there's hot water demand, both bdr91s trigger.

It seems evohome thinks the heating relay controls the boiler. But in this case, both wires trigger the boiler so need to drive each BDR91 independently. Any thoughts?
 

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