OFCH and hot water cylinder

Darando

Wondering about something in our house.

We have OFCH (old boiler>20 years), it has never heated the hot water cylinder (i.e. the heating doesn't heat the hot water cylinder). Is this beacuse of of the boiler system or because of the cylinder design itself?

(I don't think the cylinder has a coil inside! if possible could a new cylinder be fitted easily? or is it not possible due to boiler? I remember being told before it was beacuse the boiler is a certain type (it has a large red expansion tank on the boiler)

roc1980

Darando wrote: »

Wondering about something in our house.

We have OFCH (old boiler>20 years), it has never heated the hot water cylinder (i.e. the heating doesn't heat the hot water cylinder). Is this beacuse of of the boiler system or because of the cylinder design itself?

(I don't think the cylinder has a coil inside! if possible could a new cylinder be fitted easily? or is it not possible due to boiler? I remember being told before it was beacuse the boiler is a certain type (it has a large red expansion tank on the boiler)

if the cylinder does not have a coil you will have to get a new cylinder,there should be no reason why your boiler cant be hooked up to the new cylinder,the red vessel is so you can do away with your expansion pipe and feed tank

Buford T Justice

You will need to replace the cylinder and get a plumber to do a bit of work to re-jig the heating system.

Darando

roc1980 wrote: »

if the cylinder does not have a coil you will have to get a new cylinder,there should be no reason why your boiler cant be hooked up to the new cylinder,the red vessel is so you can do away with your expansion pipe and feed tank

This is what I was thinking..the coil acts really as an internal radiator within the cylinder??

Was thinking of a new factory insulated tank and then breaking into the heating system to link in the coil?? All the pipes (where they split - manifold) for the heating are in the hot press beside so shouldn't be a big problem I would guess??

Heating is micro-bore I believe though - sop would this have any reason for such a set-up?

Sparkpea

its a direct cylinder which would have been heated by a back boiler in the fire

u need an indirect cylinder (this has the coil in it)

yes the coil is like a pipe going through the tank that the heating water runs through to heat the water around it (stored water) so its like a radiator

if connecting to a microbore system make sure u take it off the pipes feeding the manifolds (15mm or 22mm pipework) and put a balancing valve on the tank (gate valve on either the flow or return)

MaxFlower

In my system you can isolate the cylinder (red stopcock) from the boiler. If your cylinder does have a coil, check if you have one and if its closed.

Darando

Sparkpea wrote: »

its a direct cylinder which would have been heated by a back boiler in the fire

u need an indirect cylinder (this has the coil in it)

yes the coil is like a pipe going through the tank that the heating water runs through to heat the water around it (stored water) so its like a radiator

if connecting to a microbore system make sure u take it off the pipes feeding the manifolds (15mm or 22mm pipework) and put a balancing valve on the tank (gate valve on either the flow or return)

Just had a quick look at the cylinder. Apart from the usual Cold In/Hot Out for sink/shower etc.., there are 2 other pipes. Both are small diameter pipes (same as those for the micro-bore heating). Would the back boiler be connected via such small pipes?

btw , I can also see the manifold for the 5 upstairs (10 small pipes on 1 manifold with 2 spar blanked off) radiators just beside the tank. It is conected to gun barrel piping so I gues this is where you would connect into for a new indirect cylinder...

Its the parents house and mother would not be too keen if floors etc.. had to be removed..but I'm guessing it would be ahandy enough job.