Ideal classic RS50 with Honeywell control

[George Owenson]

Boiler works OK, but regardless of 'ON' or 'OFF'position of heating slider, radiators come on at same time as hot water. This control has one clock with option of two on-off per 24 hours: separate slide for heating and hot water. Didn't do this last year. Just that I don't want heating on every time I need hot water.

[doitmyself]

Possibly a motorized valve fault.

You should have one or two motorized valves - usually near the hot water cylinder. How many and what type - Flow (straight through pipe) or Mid-position (pipes in a T)?

[George Owenson]

I have seen these in other systems, but (believe me) there are non either near the Hot Water cylinder nor at the boiler. And I don't recall seeing any under the floor either !

[doitmyself]

How many pipes connected to the boiler - ignore the gas pipe?

[George Owenson]

Hi doitmyself - thanks for your help on this. Two water pipes lead in to th topof teh boiler. One cold in and one hot out. The hot put has several connections off gojng elewhere, with one back to teh cylinder. The boiler has two additional blanked-off pipes, one each at inlet and outlet. Hope you understand this explantion

[doitmyself]

Two water pipes lead in to the top of the boiler. One cold in and one hot out. The hot out has several connections off going elsewhere, with one back to the cylinder.

I think I've got that.

The boiler has two additional blanked-off pipes, one each at inlet and outlet. Hope you understand this explanation

That means the system must be fully pumped.

Do you have a thermostat on the side of the HW cylinder -about a foot up, usually help in place by a strap round the cylinder?

[George Owenson]

The Cylinder is like an octopus with pipes all over. Hot in and out, also cold in at the bottom, and another disappears round the back.

But no strap and no thermostat !

[doitmyself]

Can you post a photo of the Hot water cylinder and all the surrounding pipework etc?

[George Owenson]

Will do, but Wednesday - got appointment tonight. Thanks, hope you'll come back tomorrow!

[doitmyself]

Will do, but Wednesday - got appointment tonight. Thanks, hope you'll come back tomorrow!

I'll get an email when you post!

[ferret]

George you haven,t said whether its always been like this or not , we can understand better with a full sp ,its very unusual not to have any MV,s

[George Owenson]

cylinder.jpg

Thanks to all helpers. Photo of cylinder. Hot from boiler bottom left (cock/tap). Large cold pipe continues to upper floor behind cylinder. No more connections out of frame. Coiled mains cable is for immersion heater. Green sludge is very old. This is a new problem.

[doitmyself]

Definitely no sight of a cylinder thermostat or motorized valve.

So how was the hot water temperature controlled?

You say that last year you could have the HW on without the heating. Are you talking about in the summer or the winter?

Do you have a room thermostat?

Make and model of the timer/programmer?

Where is the pump located?

Photo of boiler and surrounding pipework, please.

[George Owenson]

So how was the hot water temperature controlled?
At Boiler
boiler control.jpg

You say that last year you could have the HW on without the heating. Are you talking about in the summer or the winter?
Any time

Do you have a room thermostat?
No, thermostatic valves throughout

Make and model of the timer/programmer?
control.jpg

Where is the pump located?
At Boiler again I think

Photo of boiler and surrounding pipework, please.
Boiler.jpg

[doitmyself]

Has any work been done to the system recently? If so what and by whom?