Vokera 20-80 RS Flowmatic

[dochunt]

Hello all,

New around here so this is my first post. I have recently moved into a 2 bed flat with my girlfriend and have been shocked to find we are using around 92kw of gas every day.

We have the above combi boiler plumbed to 3 large (double) radiators, 2
small (double) radiators and a heated towel rail. This morning the heating was on for 3 hours and we both had showers which used 47kw of gas.

Does this sound right? Could it be the boiler or a fualty meter?

I am a complete novice at this stuff so any advice would be very much appreciated.

Thanks in advance for any suggestions.

DH

 

[DP]

Boiler is rated at 28.6kwatts i.e. if the boiler is running full belt delivering hot water at specified 9.5l per minute, it will not be modulating (since cold water is at present sitting at 7 degrees c), so in one hour you will have clocked 28.6kwatts.

If both of you had a shower lasting 30 minutes and boiler was delivering maximum rate of water, you will have clocked 28.6Kw.

When you use hot water, combi boiler does not heat radiators, so you could say radiators used up remaining 18.4kw over two hours.

Very good chance the boiler has not seen proper service for many moons. Taking care of that will reduce the fuel bill.

Another common omittance is absence of a room thermostat to shut the boiler down when desired ambient temperature has been achieved. Often the radiators are fitted with TRVs but temperature selected is max (pointless having a TRV- might as well just fit ordinary radvalves)

Regularly service these boilers and advice customers on ways to reduce the gas bill by prudent use of system controls.

 

[Agile]

Where you see kW above, think of kWh !

Energy is expensive and thats why the greenies want you to use less and save your pocket and the universe.

100 kWh a day equates to an annual gas bill of about £600 assuming 150/180 heating days and 3.3p/kWh.

Buy the girlfriend a thick jumper and tell her to take shorter showers. If you are both Scottish you can save hot water by showering together.

Tony

 

[heatingman]

If you are both Scottish you can save hot water by showering together.

Sorry perhaps its me but I do not understand or see the point with this remark. Not offended by it just don't get it.
Is it some strange TV based humour from TV Tony

 

[dochunt]

Thank you DP for a very interesting and informative reply and cheers Agile I will run the showering idea past the missus.

 

[DP]

Many would say otherwise, but I see Flowmatic as bombproof. Have in the past rescude one from a skip- it is still working away keeping the client warm with hotwater on demand.