Radiator issue

Bob..loblaw

Hi,

I'm working off a range that should be able to heat all the radiators I have. The problem is that a couple of radiators will get warm and then get cool again even though the fire is at the same level, whilst the other radiators wont heat up at all. I have bled them but that didn't change anything. I also use oil and the radiators get hot in no time. Could anyone suggest a reason for this?

Thanks.

Bob..loblaw

Nobody has any ideas? Do you need more info on the problem? Any advice would be appreciated.

steve215

Is there a pump that only kicks in when you switch to oil?

Bob..loblaw

Separate pumps. I can hear the one in the kitchen every now and again but shouldn't the water get hot and constantly circulate instead of this warm for 30 seconds then cold for a long time?

shane0007

Ranges are notoriously inefficient, but it would depend on the make/model, age, system parameters/pipework, etc.

Do you get much hot water from the solid fuel side or limited?

Bob..loblaw

Loads of hot water, it's a stanley range about 5 years old.

shane0007

What temperature is the pipe stat set to & what location is at & is it on the flow or return pipe?

sawdoubters

can you bleed the radiators

shane0007

sawdoubters wrote: »

can you bleed the radiators

If they are heating with the oil side, it's not air.
Sounds like a poor location of the pipe stat to me, probably located on the return.

Bob..loblaw

It's always set at between 60 and 70 degrees. Is there any trick to knowing if it's a flow or return pipe? I also just saw a myson control fixed to a different pipe than the pump. It is set to automatic, should I set it to manual? Is this what controls the circulation of the water?

shane0007

That's a motorised valve & will be for the oil side.
Can you post a pic of the stat?

TTTT

You need to balance the radiators for the range cooker and change to pipe stat to 40-50c (if stat is on the common return). The return should be the cooler pipe.

Bob..loblaw

Here's the pic. Everytime I mess around with the stat I can hear the pump come on. I did this for a few minutes straight and the radiators seemed to stay on.

shane0007

Ok. It's on the flow which is good. Set to 50-55C. Any lower will lower the hot water cylinder temperature to the set point when the fire dies down & it will use the cylinder as the boiler.

Bob..loblaw

Ok I'll give it a go and let you know how it goes. Thanks for the input.