Combi boilers connected as zone valves
Posted: Thu Feb 01, 2018 10:57 am
Hi everyone!
I'm trying to upgrade my existing system(s) with evohome.
The two story house I live in has two separate heating system in it: each with it's own CH (Vaillant AtmoTec plus VUW 200 and a BOSCH Gaz 3000 W) providing heat to 8 radiators downstairs and 6 radiators upstairs (3 and 5 zones respectively), each radiator fitted with HR91's.
I tried to reach out to one of my local Honeywell reseller asking if I will be able to connect both systems to one controller. They said I have two options:
1. To use two separate controllers, each controlling one CH.
2. Use one controller, add the two CH as zone valves, but then I need 3 BDR91's: one for downstairs, one two in parallel next to the CH with 5 zones, because of some maximum 4 zone limitation for each zone valve.
I did not have the courage to go with solution 2, as it seemed a bit "hacky", and choose to install 2 separate controllers in the house.
I'm still not sure if I made the right choice, this is why I'd like to ask what are your thoughts on the subject? what would've been right choice?
I'm trying to upgrade my existing system(s) with evohome.
The two story house I live in has two separate heating system in it: each with it's own CH (Vaillant AtmoTec plus VUW 200 and a BOSCH Gaz 3000 W) providing heat to 8 radiators downstairs and 6 radiators upstairs (3 and 5 zones respectively), each radiator fitted with HR91's.
I tried to reach out to one of my local Honeywell reseller asking if I will be able to connect both systems to one controller. They said I have two options:
1. To use two separate controllers, each controlling one CH.
2. Use one controller, add the two CH as zone valves, but then I need 3 BDR91's: one for downstairs, one two in parallel next to the CH with 5 zones, because of some maximum 4 zone limitation for each zone valve.
I did not have the courage to go with solution 2, as it seemed a bit "hacky", and choose to install 2 separate controllers in the house.
I'm still not sure if I made the right choice, this is why I'd like to ask what are your thoughts on the subject? what would've been right choice?
