Stove boiler and OFCH

MarkieMaguire

Guys just a quick question re a dual oil fired central heating and stove boiler working together.

I had the boiler stove put in 2 years ago, it heated the rads but nothing like the oil did. When I say nothing I mean they were luke warm you wouldn't melt an ice cream on them.

After calling the plumber back he made some adjustments and bled the system as there was some banging. But told us we must actually keep a big fire in the stove to heat the rads. With the recent cold weather I fired up the stove and monitored the rads heating, had 2 rads that wouldn't heat. (Well 1 of the inlets would heat but the rad wouldnt) After bleeding re balancing the system I got heat into both rads.

Weather got colder so I said I'd fire up the oil the next time we froze hard, pump wouldn't kick, after opening it up and releasing a tonne of air, and the requirement of a small love tap the pump kicked in with a squeel.

All rads heated perfectly almost untouchable but I noticed when the oil is on the rads are heating from the opposite side than they do with the fire, this is hardly correct?! Surely I should be able to run a dual system side by side, however I'm afraid to run both as 1 would be pumping against the other.

Had a small look in the hot press and the fire pumps hot water into the top of the tank and out the bottom (surely it should be in bottom out top as heat rises?) To heat the water ...

The oil pumps the hot water into the bottom of the tank and out the top using the same pipes.

It just seems hugely odd that they would run the opposite direction. And I feel this could be causing the 2 rads not to heat and also the lack of heat while using the stove.

Look forward to your responses

Dtp1979

MarkieMaguire wrote: »

Guys just a quick question re a dual oil fired central heating and stove boiler working together.

I had the boiler stove put in 2 years ago, it heated the rads but nothing like the oil did. When I say nothing I mean they were luke warm you wouldn't melt an ice cream on them.

After calling the plumber back he made some adjustments and bled the system as there was some banging. But told us we must actually keep a big fire in the stove to heat the rads. With the recent cold weather I fired up the stove and monitored the rads heating, had 2 rads that wouldn't heat. (Well 1 of the inlets would heat but the rad wouldnt) After bleeding re balancing the system I got heat into both rads.

Weather got colder so I said I'd fire up the oil the next time we froze hard, pump wouldn't kick, after opening it up and releasing a tonne of air, and the requirement of a small love tap the pump kicked in with a squeel.

All rads heated perfectly almost untouchable but I noticed when the oil is on the rads are heating from the opposite side than they do with the fire, this is hardly correct?! Surely I should be able to run a dual system side by side, however I'm afraid to run both as 1 would be pumping against the other.

Had a small look in the hot press and the fire pumps hot water into the top of the tank and out the bottom (surely it should be in bottom out top as heat rises?) To heat the water ...

The oil pumps the hot water into the bottom of the tank and out the top using the same pipes.

It just seems hugely odd that they would run the opposite direction. And I feel this could be causing the 2 rads not to heat and also the lack of heat while using the stove.

Look forward to your responses

Solid fuel doesn't pump anything into the cylinder, or at least it shouldn't. Try and upload pics of the hotpress

MarkieMaguire

it definitely goes through the cyclinder, pipes get hot when pump on stove kicks in. and its heating the water.

I can't post images URLS or attachments cause im a new user ..
not really familiar with boards as a member although its a site i browse quite a bit when im stuck. is it possible to inbox pictures?

Calahonda52

OP, what happens if you don't use the stove and use the oil, does the hot water heat the back box in the stove?

What pipe to/from the stove is the stove pump fitted to?
In what direction is it pumping?

Re the direction of flow in the cylinder, top down is the more usual as yes hot water rises so you want it kept in the coil a bit longer...

MarkieMaguire

Calahonda52 wrote: »

OP, what happens if you don't use the stove and use the oil, does the hot water heat the back box in the stove?

What pipe to/from the stove is the stove pump fitted to?
In what direction is it pumping?

Re the direction of flow in the cylinder, top down is the more usual as yes hot water rises so you want it kept in the coil a bit longer...

if the stoves not lit, the output pipes from the stove get hot, as if the hot water is travelling into the stove. this is the pipe with the stat on it.

the return flow into the stove has the pump, controlled by said stat pumping the return water in the direction of the stove.

there is also a pump in the hot press pumping downwards (connected to the same stat), which is then branched into the top of the cylinder i would imagine whats not going into the cylinder is whats feeding my rads.

Dtp1979

MarkieMaguire wrote: »

if the stoves not lit, the output pipes from the stove get hot, as if the hot water is travelling into the stove. this is the pipe with the stat on it.

the return flow into the stove has the pump, controlled by said stat pumping the return water in the direction of the stove.

there is also a pump in the hot press pumping downwards (connected to the same stat), which is then branched into the top of the cylinder i would imagine whats not going into the cylinder is whats feeding my rads.

Go and post 50 full stops on other forums. Then you'll be allowed to post pics.

TPM

We could really do with some photos but until you have enough posts to get them up here we will have to stick with asking questions.
Does your cylinder only have 1 coil?

Is the pump on the top or bottom pipe of the stove.
Are there any other pipes connected to the pipe between the stove?

I hope i am wrong but from the information given so far I think you could have major issues with how the stove is connected