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Questions about central heating and boiler questions in here please.

 [ Total topics 7161 Go to page 1, 2, 3, 4, 5, 6, 7, 8 ... 717

 Post subject: Heat Exchanger on an (at least 12 year old) Baxi
PostPosted: Wed Feb 20, 2019 10:01 am 
Morning folks

My boiler started kettling last night, really badly. The water goes hot and cold, (and has done on an off for a while) and the pressure gauge was bouncing around. SO I guess it's a HE and will need to get it fixed. But, I was wondering, if that just throwing good money after bad?

The boiler is at least 12 years old (Baxi Duo Tec 28) and is heating a 4/5 bed ...

Read more : Heat Exchanger on an (at least 12 year old) Baxi | Views : 359 | Replies : 3

 Post subject: Which Stat Nest or Hive.
PostPosted: Sun Feb 17, 2019 10:26 pm 
Hi all
I'm a newbie first post sorry if it's been answered but did a search and could not find answer to my question.

I have a gravity fed system not sure which plan. I want to install a smart thermostat don't know which is better for me either Nest or Hive , leaning towards Nest. I have a Gloworm Energy Saver 50e and a drayton SM905 timer.

I need to know how to wire ...

Read more : Which Stat Nest or Hive. | Views : 363 | Replies : 1

 Post subject: Smart Thermostat
PostPosted: Sun Feb 17, 2019 9:28 am 
I want to replace my current heating programmer and room thermostat with a Smart thermostat. I have an external oil burning condensing combo boiler (Grant Vortex Pro). The current programmer controls the water as well (yeah right!). When I took off the front plates of the thermostat and programmer I expected them to be joined to each other. It seems that they both have separate 3 core and earth cables. The smart thermostat is the ...

Read more : Smart Thermostat | Views : 342 | Replies : 2

 Post subject: Central heating Winter/Summer control!
PostPosted: Sat Feb 16, 2019 10:18 pm 
As Summer arrives, I want to design a system which will turn heating off when we have a warm patch, and on again with cold patch with of course manual over ride.

On a typical blue clear sky at night the temperature can drop to 12°C but during the day it can sore to 28°C, so want some thing to inhibit the central heating from running when there is likely to be a warm day ...

Read more : Central heating Winter/Summer control! | Views : 427 | Replies : 4

 Post subject: Adding inhibitor, just checking
PostPosted: Sat Feb 16, 2019 5:25 pm 
I am wanting to add some Fernox F1 protector (Combi boiler) It says I can add it via the fill loop, but mine only "seems" to have one tap to turn off (not a problem, he said hopefully) so I was wondering is this the next best way (see following)

1) Turn off boiler
2) Put small bucket under drain off valve under the floor.
3) Open drain off valve, fill small bucket
4) Open ...

Read more : Adding inhibitor, just checking | Views : 408 | Replies : 3

 Post subject: Hive question
PostPosted: Thu Feb 14, 2019 3:18 pm 
i current have a salus t105rf connected to my biasi boiler and have purchased a hive. is it a straightforward swap over? thanks for your help

Read more : Hive question | Views : 381 | Replies : 1

 Post subject: Central heating
PostPosted: Tue Feb 12, 2019 1:52 pm 
Hi everybody please can you help with my central heating problem. I live in a park home a bungalow made of timber , the kitchen, lounge , hallway , and bathroom are fine and warm I have my Vailant boiler set about 40 to 55 degrees , this includes the smaller of the 2 bedrooms but the larger bedroom is quite cold , the radiator is big enough for the room size . The cold ...

Read more : Central heating | Views : 419 | Replies : 3

 Post subject: Temperature Assumptions?
PostPosted: Mon Feb 11, 2019 5:16 pm 
Quick question about heat output from a radiator. I spotted on rated at 5569BTU. When manufacturers make their calculations, what temperature drop do the assume between feed and return water temperates, and what room temperature do they assume?

Read more : Temperature Assumptions? | Views : 469 | Replies : 8

 Post subject: Grant boiler wiring
PostPosted: Sun Feb 10, 2019 4:59 pm 
Grant External Combi Manual 1 colour__.pdf

Hi Guys
Hoping someone can clarify wiring a new programmable room thermostat on my grant boiler
have attached relevant page from boiler manual. The diagrams indicate that the wire to the boiler is a switch 230/240v live but the text on the left below warning header says volt free output.
is anyone able to offer any thoughts as this appears to be a contradiction how ...

Read more : Grant boiler wiring | Views : 312 | Replies : 1

 Post subject: 22mm Radiator tail?
PostPosted: Sun Feb 10, 2019 1:32 pm 
Hi All :)

I have been replacing some old radiators in my old house for newer ones, and up to now it has been pretty easy.

I have been using telescopic radiaor tails to fit the new sized radiators into the space between the existing valves/pipework etc.

But the latest radiator I have taken off has a different sizes connction to the valve - 22mm rather than the others that were 15mm ..

I have ...

Read more : 22mm Radiator tail? | Views : 433 | Replies : 7

 [ Total topics 7161 Go to page 1, 2, 3, 4, 5, 6, 7, 8 ... 717

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