Search the forum,

Oil Combi Boiler Hot/Cold/Hot

Post new thread

Discuss Oil Combi Boiler Hot/Cold/Hot in the UK Plumbing Forum | Plumbing Advice area at PlumbersForums.net

F

Freddy1O

Messages
3
Hello. I have an oil fuelled combi boiler and the hot water starts hot, then goes cold for a few seconds and then back to hot... Is this right? Thank you.
 
Oil fired combis I think produce DHW at ~ 80C and reduce it to 60C with a TMV, if the HW from your hot tap is very hot (80C) then the TMV may be faulty and the shower(s) TMVs over compensate with cold water initially and then stabilize.
 

Reply to Oil Combi Boiler Hot/Cold/Hot in the UK Plumbing Forum | Plumbing Advice area at PlumbersForums.net

Similar plumbing topics

B
POTTERTON PROMAX 28 COMBI Boiler - Hot Water Issue
Hello, I am seeking some advice, I have a POTTERTON PROMAX 28 COMBI Boiler and I noticed yesterday that the water around the house is no longer warming up. The heat exchanger has been changed 6 months ago, so I do not believe it is that. Does anyone have any ideas on what it could be? Thanks
Replies
4
Views
224
oz-plumber
O
P
Viessmann combi starts when cold, mixer, tap is opened
Recently had a Viessmann Vitodens combi boiler installed, quite often when the adjacent cold mixer tap is opened the boiler starts for a few seconds! Can anyone tell me what is causing this? And how to cure?
Replies
3
Views
200
ShaunCorbs
ShaunCorbs
M
Unvented discharge at high level current regs
Hi they used to say as a last resort you could discharge the D2 pipework at high level and turn it back to the wall. Similar to a combi boiler. I have just looked back through the regs this seems to have changed and it isn't mentioned now. It now mentions if at high level it should be discharged...
Replies
11
Views
250
Matt0029
M
F
  • Question
No Hot water, Fixed and Broken Again Ideal Logic 24
Ideal Logic 24, Previous problem was that the hot water was only cold or barely warm if the heating was in use. If heating was off and boiler cold then would get hot water most of the time. Changing the flow cartridge about 2 years ago (when I moved in) solved this problem enough to suffer it as...
Replies
2
Views
123
Lou
Lou
M
Central heating losing pressure all the time
Every two weeks or so I have to go and top up the system because the hot taps are running cold. Boiler display is flashing 0.6 bar and I fill up to 1.3. I've had an engineer look inside the boiler and he can't see anything wrong. I've checked the pipes all over the house and cannot see any...
Replies
1
Views
129
fowlerboi
F
Creating content since 2001. Untold Media.

Newest Plumbing Threads

Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock