Zoned central heating

[Ula NI]

Hi there,
Bought a new house, zoned central heating. 3 dampers (I think that's what they're called) one lights up when down stairs heat is on, one lights up when upstairs heat is on - separate digital controls for each located in hallway and landing.
I think the third damper is for the hot water.
My question is, I can control when the heating comes on and off but I can't control when the water damper, so eg last night at 12midnight I could hear it firing up, maybe the water temp had dropped and it was reheating??
My previous house was a lot simpler to work and therefore manage costs having the water only heating up when I wanted.
A bit long winded, but can you help?
(I'm adding photos to an album)

 

[leakydave]

I hope the first photo is upside down. If not someone has put an unvented cylinder on your ceiling.

Your 'dampers' are 2-port zone valves... is there a suitable bypass fitted? Your TIMECLOCK will have settings for ON and OFF times. Find that and you should be able to control the heating better.

 

[Ula NI]

Leakydave don't know why photo was upside down!!
How would I know what a by pass looks like??
I can work the timer there are 3 time settings during the day, it's just I want to be able to control the water coming on separately.
Obviously the water heats up with the radiators, but then that third 'port' sometimes lights up and gets the burner going when the central heating us not on.
How do I control it?
There is no separate control for water on the timer.

My old house was simple .... Heat on, heat off, water on water off... Done.

 

[leakydave]

What time clock do you have?

 

[leakydave]

//www.diynot.com/network/GemsNI/albums/22919/85642

//www.diynot.com/network/GemsNI/albums/22919/85643

 

[Ula NI]

Danfoss tp5 - I've downloaded the manual.
It's literally 6 time programmer,on/off times for 3 slots during the week m-f and same again for sat sun.

 

[leakydave]

Do you have separate time control for each heating zone and the hot water of do both heating zones come on when you turn the heating on [subject to wall stat calling]

 

[leakydave]

Do you have an oil combi by any chance?

 

[Ula NI]

Yes I have separate timers for upstairs and downstairs.
The is no time for water, had a plumber here today for different issue, he says for some reason it looks like hot water is wired to maintain what ever temp it is set to 24/7.
I've turned it down to 30 to try and stop it from firing up the furnace and using up the oil.
Can i get another time our in to manage timing for the water??
The other timers are thermostatically controlled with valves on the radiators.
And again, sorry but how would I know if it's an oil combi? And if it is what does that mean?

 

[leakydave]

No you don't have a combi I forgot I had seen your cylinder.

You need to fit a single channel time clock to control when you heat the water. Ask an Electrician, not necessarily a Plumber.

 

[Ula NI]

Ended up having a leak in a totally unrelated issue, so the plumber who came out said my system keeps the temp of the hot water cylinder at 60/50 or whatever you set it St and therefore may be more efficient instead of letting the tank get cold and then having to heat it up when needed??? Could my way be more efficient?
I'll only know when I run out of oil!