Fitting a wireless room thermostat

stupot101

Hi, I currently have a standard gas boiler with a hot water tank, controlled by a Sunvic Select 207 XLS programmer and a Danfoss room thermostat mounted in the living room.

As our house is single skin it is very hard to heat in winter. And with a new baby we don't want him to freeze in his room, which is the coldest in the house!

So I want to get a wireless room thermostat so it can be wherever he is. But I'm a bit confused about what I need to change. Will I need to change both the thermostat and the programmer? If so would this require a change of base plate, and therefore an electrician to fit it?

bridgedino

You'll need a receiver wired into the boiler to accept instructions from the wireless room thermostat on when to fire up and shut down.

Therefore, more than likely you'll need a gas registered engineer to fit it if it involves opening up your boiler so I'd start there first.

British Gas currently supply and fit their Hive system for £199 or £149 if they're are your energy supplier.

Theres other similar products on the market just now. A quick google search will provide you with plenty of info

roddydogs

Dosent involve "opening up the boiler" only the wiring. Not really a DIY job unless you really savvy with leccy.
Well worth it in the end I have my Tsat on the coffee table so I can adjust it as suits.

bridgedino

roddydogs wrote: »

Dosent involve "opening up the boiler" only the wiring. Not really a DIY job unless you really savvy with leccy.
Well worth it in the end I have my Tsat on the coffee table so I can adjust it as suits.

Access to the wiring loom on my worcester is inside the front case, which is also the combustion cover.

A lot of boilers have the front cover as above. Alot don't

Just check beforehand.

stupot101

Thought I might have been able to use the base plate of the existing programmer.

Roddy, which make did you go for and you don't happen to remeber how much the installation cost?

StuC75

Have you tried a baby room thermometer in the room in question - just to see how cold is cold?

Do you know for certain that its outside of the preferences for bedroom temperatures?..

The ease of which a new wireless sensor could be added is dependent upon how the existing one is wired in - mine was changed on a new boiler where the other wireless was too basic a function - so really was a case of unwiring the original transmitter 'sender end' and using that wire to connect to the new transmitter box - 3 wires in all , and as easy as wiring a plug..

granted that was easy as just a case of unwiring the existing transmitter and matching those wires across - certainly wouldn't dabble with anything inside the boiler casing.

loracan1

The receiver on mine just replaced the existing controller...plumber showed me what to wire to where (literally just a couple of or three spade conectors) it's a salus - gets varying reviews but have had it a couple of years with no problems.

System

stupot101 wrote: »

Hi, I currently have a standard gas boiler with a hot water tank, controlled by a Sunvic Select 207 XLS programmer and a Danfoss room thermostat mounted in the living room.

As our house is single skin it is very hard to heat in winter. And with a new baby we don't want him to freeze in his room, which is the coldest in the house!

So I want to get a wireless room thermostat so it can be wherever he is. But I'm a bit confused about what I need to change. Will I need to change both the thermostat and the programmer? If so would this require a change of base plate, and therefore an electrician to fit it?

You need to do your research as smart thermostats operate in different ways. There are threads about this in the Energy forum. I can understand your wish to protect t your child; however, a smart thermostat alone may not be the answer. If you place it in the baby's bedroom, for example, and set a temperature then the CH for the whole house will turn on/off as the temp falls/rises. You might be better off looking at zoning; that said, this is a more expensive solution.

I have the Evohome system installed in my home. The Evohome controller is linked by wifi to two receivers in my airing cupboard. The receivers are physically wired to the two inline motorised vales: one, for CH and the other for HW. The CH only comes on when a room TRV demands heat. HW is controlled between 60 and 50C. This would work in your situation as you could set the TRV in your son's room to, say, 15C and leave the rest of house unheated at night.

The basic controller is about £190; the HW kit about £90 and individual TRVs about £60 including 5% VAT. There is no need to fit electronic TRVs throughout. For example, if you have rooms that are rarely used then go for basic TRVs which are set low.

Honeywell has in the last few days released a Smart Thermostat which is Evohome compatible; i.e., you can use it in lieu of electronic TRVs.

http://www.cnet.com/uk/products/honeywell-single-zone-thermostat/

getmore4less

How simple will depend how the current themostat is wired into the system.

If it is wired into a junction box then you can in many cases just replace the conections in there with the wired from the relay box that the wireless thermostat talks to.
Might as well get a programable one and just set the current timer to allways on.

The other issue can be power in the relay box some solve this by having battery operated and just switch the demand for heat.

You could probably do this with OWL and that also give internet access but will cost around £200. and another 80 to do the hot water

Heatmiser do a few options that would be cheaper.

1Chris

I have a Siemens RDH10RF wireless thermostat which cost about £65. My receiver (which is included) is fitted in an airing cupboard.

I had it fitted by an electrician. He also removed the old thermostat.

It has been a fantastic purchase, no problems at all.

ispookie666

i'm new to all this. A very basic question. I have a programmable honeywell CM907 thermostat. Could i upgrade to the wireless version - where the receiver is fitted to the base plate of the current thermostat.