Help with thermostat compatibility with ducted heater

[Jesseaxel]

Hi,

I have a braemer bmq330 ducted heating unit with manual thermostat controller using 2 batteries and 2 cables from heater.

can you please advise if any of the nest thermostats will be compatible to replace existing manual thermostat?

Including image for reference.

[Patrick_Caezza]

The problem with ducted units is they usually use a wireless remote to control them which none of the Nest thermostats are compatible with.

If you have a wired thermostat, it might be unless it is using a proprietary interface that is also not compatible.

[Jesseaxel]

Hi,

thank you for your reply.. 

my ducted heating unit does kit have any remote control. It’s a manual thermostat controller which I am trying to replace with programmable thermostat.

[Patrick_Caezza]

Post a picture of the original thermostat's wiring here

[Ryan_G]

Hi Jesseaxel,

Thanks for reaching out here in the community and for providing a photo of your current thermostat.

I can't really tell if your thermostat has a proprietary system which is not compatible with the Nest thermostat. Could you take another picture or let us know what the wire labels are?

Thank you for your help, Patrick_Caezza.

Best regards,

Ryan

[Jesseaxel]

Hi Ryan,

the installer told me the wires have no labels as the controller has no polarity. I am not sure what that means in electricity terms

[Ryan_G]

Hi Jesseaxel,

Thanks for your reply.

No polarity means you can connect those wires either way. There's no positive or negative polarity that you could use as a guide.

Best,

Ryan

[Ryan_G]

Hey folks,

I just wanted to follow up and see if you're still in need of help. Please let us know as we would be happy to answer any questions you may have. 

Best regards,

Ryan

[Jesseaxel · Accepted solution]

Hi Ryan,

thank you for your message.

I have finally installed Honeywell programmable thermostat.

Thank you to everybody who shared knowledge and recommendations with me. 

[aatienza]

Hey Jesseaxel,

Appreciate the help and thanks for letting us know. Hope that sheds some light on the issue.

Thanks,

Archie

[aatienza]

Hey Jesseaxel,

I haven't heard from you in a while so I'll be locking this thread if there is no update within the day. If you have any new issues, updates or just a discussion topic, feel free to start a new thread in the community.

Thanks,

Archie

[Jesseaxel]

 

[Jesseaxel]

I am told by installer the controller has no polarity. Not sure what it means

[odesired]

https://www.youtube.com/watch?v=-MptX7Hou7k&t=463s&ab_channel=Iguana6767

This video did a pretty good job helping me get mine going. 

Note that the thermostat itself needs something to keep it going (it has a built in battery but who wants to take it off the wall to charge it) so i installed a https://www.amazon.com.au/gp/product/B0786ZRBFV/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1 cut the end of and wired that as my "c" and "rc" cable hope this helps