No room termostat for my baxi boiler

lar316

ic wrote: »

I fitted a wireless room thermostat to my Worscester boiler in about 15 minutes. Essentially there were four connections to make to the wireless receiver which I mounted under the boiler - the live and neutral for power (just hooked into the same FCU as the boiler was using), and then there were two connections to the boiler itself, which are what the receiver connects and disconnects to tell the boiler to come on and off.

As l long as you're competent with electrics, I wouldn't say it was a job for a pro.

Here's the instructions for your boiler: http://www.baxi.co.uk/docs/Baxi_Combi_Instant_HE_Installation_and_Servicing_Instructions.pdf. See page 25, fig 29. I used two lengths of standard white lighting flex for mine, one for the power the other for the switch connection.

Make sure you locate the wireless control panel in the coldest room in the house, away from the radiator. Ensure the TRV on that one radiator is set to full on - the wireless panel will replace its job in that room.

I went with the predecessor to this thermostat.

Many thanks for this advice. I took the cover off my boiler just now, had a look and could see exactly what you was saying, looks like im gonna get that job done at the weekend now as it looks simple enough.

frank.hopper

espresso wrote: »

If you have TRV's, you effectively have thermostats in each room, so why would you want another one fitting! See here for more info.

Without a room thermostat the boiler will continue to heat the FLOW pipe and circulate the water back to the RETURN pipe, the returned water will now be cooler, this is wasteful, irrespective of the TRV's shutting down each radiator. . The pump will never stop running while the heating is on, If it's a combi, the fan will also be running which is wasteful and unnecessary.

More gas
More elec
More maintenance


HTH! as Elite said, your WRONG.

david29dpo

Agree. You are wrong. All systems should have a stat. A good wireless one are cheap these days.

espresso

david29dpo wrote: »

Agree. You are wrong. All systems should have a stat. A good wireless one are cheap these days.

More generalisation. Boilers were available long before the OP's installation that do not require a roomstat to be fitted. These boilers were developed specifically to meet the conservation of fuel and power regulations and are fitted with an integral control interlock or flow control switch, which shuts the boiler down when all TRV's are closed.

If a roomstat was required to be fitted on this installation, then the CORGI registered installer should have fitted one, however the regulations do not state that they are required as not all systems need them.

ic

Personally I installed a wireless room stat (as I described above) so that I had a decent programmer. The boiler only had a 24 hour mechanical timer on, yet I work five days a week. Now the boiler comes on to suit my patterns, so is on early mornings and in the evenings during the week, but later in both the morning and the evening at the weekend. It also offers the convenience of "party mode" override and "holiday mode" which I can access from my dining room, rather than having to traipse up to the bathroom where the boiler is. Lastly it is optimising, so on warmer days the heating doesn't kick in till closer the time it is actually needed.

david29dpo

espresso wrote: »

More generalisation. Boilers were available long before the OP's installation that do not require a roomstat to be fitted. These boilers were developed specifically to meet the conservation of fuel and power regulations and are fitted with an integral control interlock or flow control switch, which shuts the boiler down when all TRV's are closed.

If a roomstat was required to be fitted on this installation, then the CORGI registered installer should have fitted one, however the regulations do not state that they are required as not all systems need them.

Very old fashioned approach.

espresso

david29dpo wrote: »

Very old fashioned approach.

It is not a 'very old fashioned approach', it is your knowledge that is old fashioned!

Baxi/Pottertons boilers have been developed to meet the Government's requirement that all boilers (with some exclusions and exceptions) installed from April 2005 should be either SEDBUK Band A (with efficiencies greater than 90%) or SEDBUK Band B (with efficiencies from 86.1% to 90%).

You decided to post stating that in your opinion I am wrong, however the manufacturer states otherwise!

Flow switch fitted as standard – Part L compliance via flow switch for fully TRV’d systems, which means no room stat or bypass required.

If the OP wants to fit a roomstat, then fine. As ic has said, a seven day digital programmable roomstat can be very useful, I have one myself. The OP's question was if a roomstat could be fitted to their system, if the system was correctly designed and installed in 2006, it simply may not be required.

EliteHeat

Baxi, the manufacturers have something to say about the matter for this boiler ...

For optimum operating conditions and maximum economy the fitting of a programmable room thermostat is recommended.

Page 12 Installation & servicing.

But I suppose they are talking rubbish as well, in your opinion.

The OP asked whether it would be beneficial. It will be as everyone acknowledges except yourself for some very, very odd reason.