Can I by pass the T40 thermostat on my combi and run the pump etc with an inverter

[GinAndPlatonic]

I have a had a three pin socket installed on my Ideal Combi boiler but have noticed the receiver on the T40 themostat is till connected to the mains So in the event of a power failure I presume the receiver will stop working.
Would I still be able to get heating by plugging the combi boiler into the supply from my (pure sine wave ) inverter .
Or would the boiler not operate at all if the T40 receiver does not have a 230 volt supply .
My question in a nutshell is , can I bypass using the T40 thermostat temporarily in the event of a power cut

 

[CBW]

In the event of a power cut, nothing will work. The inverter, how will this be powered? Also are you sure the thermostat is a T40? Can’t seem to find a wireless version of it

 

[GinAndPlatonic]

Chris this is the thermostat : https://www.amazon.co.uk/gp/product/B00YP9FV5G/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

My mistake . I guessed T40 as that is stamped on the rear of it but the complete model number is in the link. That is the one I bought and paired it to the receiver on my Ideal combi

I have two 130ah deep cycle batteries for the inverter .The inverter is 2kw with 3kw surge .

 

[CBW]

If you wired the bdr91 receiver to the boiler the it would work, otherwise in the event of a power cut, you’d have to join the wires together, but the thermostat wouldn’t be controlling the heat.

 

[GinAndPlatonic]

I am assuming once the receiver receives a command from the thermostat it sends a command to the boiler , so it is already wired to the boiler.

What I am thinking is the receiver needs power to actually do that .

In a power cut then it will not be receiving any power from the mains , so I need to know if I can bypass it/turn it off or just any way to control the boiler by hand with the controls on the front of my ideal combi .

Then my inverter would just be supplying power to run the pump and ignition along with the circuit boards etc.

 

[bernardgreen]

Be aware that some invertors create and radiate levels of radio frequency energy that will affect wireless equipment in close proximity to the invertor.

 

[CBW]

I am assuming once the receiver receives a command from the thermostat it sends a command to the boiler , so it is already wired to the boiler.

What I am thinking is the receiver needs power to actually do that .

In a power cut then it will not be receiving any power from the mains , so I need to know if I can bypass it/turn it off or just any way to control the boiler by hand with the controls on the front of my ideal combi .

Yes receiver needs power for that, and you can’t bypass it at the boiler. You said:

I have a had a three pin socket installed on my Ideal Combi boiler but have noticed the receiver on the T40 themostat is till connected to the mains So in the event of a power failure I presume the receiver will stop working.

If it’s connected to the boiler L-N-E then receiver will work fine from the separate plug, I thought you meant the boiler was on a plug and receiver elsewhere, eg spur.

 

[GinAndPlatonic]

Thank you for your time Chris , I appreciate it .

The receiver appears to be still connected directly to the mains supply via a cable running next to the three pin socket .

Whereas the boilers pump and all the other electrics can be powered by any 230 volt source via the three pin socket .

 

[CBW]

It’s better if all the boiler related power sources are from the same source, eg 3 amp fused plug, or 3 amp switched spur.