Hello Board!
We have in the past, had some ongoing problems with our CH system that have resulted in several call outs and unfixed solutions. Recently, a lot of this came to a head and i decided to try and get to the bottom of what was going on.
We have a Y system, cold storage tank in the loft, hot storage tank in the spare room next to the 3 Way valve + circulatory pump, a Glowworm Ultimate 30FF boiler, Danfoss CP15 programmer, room stat and 6 rads in total.
The house is about 12 or 13 years old an i wouldn't be suprised if the people that had it before us (4 years we've lived there) have done no maintenance.
We always had a problem where the heating wouldn't come on unless HW was needed, and sometimes never at all.
After a while, a plumber came out and replaced the motor in the valve controller unit and it worked perfectly for a long time.
While he was here, he suggested the pump would need replacing soon, before it karked it all together. THere's loads of built up limescale around the valves because of leaking joints.
So over the last 5 months, there's been more and more strange a'happenins and a'moanins from the rads/boiler/under the cupboard.
And then, it stopped.
It all stopped working and had gone kaput. I took a day off work and found out the pump had stopped working. I replaced the pump and the valves with new ones. I also replaced the rad in the upstairs bathroom as it had a tiny leak on the bottom.
While the system was drained off, i put some cleaner goop into the header tank. Before that i mopped the header tank out of the crap that was in there. I filled back up, opened all the valves on all the rads and ran it round for a day.
Then i shut off all but one rad and washed it round that for an hour, then alternated through all the rads in the house. After, i drained and filled and drained then refilled with some inhibitor.
Bled the system and it's all pretty much working well. Except for the valve thing.
I've taken the motor box unit off the valve and have been trying to operate it manually.
Can someone tell me if there is a standard for these things? I'm trying to imagine what it looks like inside to figure out the positions.
From that, i want to monitor the white box and see if that is working correctly. I suspect not, but it could be the programmer not sending the right signal to it, perhaps?
Why would the heating only be on when the HW is called for?
Programmer is asking for both CH + HW
Room stat is calling for CH
Tank stat is calling for HW
Pump is on, rads hot, tank pipes hot, tank temp increases.
As soon as the tank hits the right temperature, everything turns off. Straight away the pump stops and the valve moves.
Although, now it's not doing that.
Can someone tell me the correct sequence of priority or something to this system?
How should i try and tell if it's the motor in the valve or if it's the programmer not sending the right signal?
I should be able to have HW, HW+CH or just CH, right? Up till now, i've just been eeking up the tank stat, but water at 80o aint good!
Thanks for any help you can give me!
We have in the past, had some ongoing problems with our CH system that have resulted in several call outs and unfixed solutions. Recently, a lot of this came to a head and i decided to try and get to the bottom of what was going on.
We have a Y system, cold storage tank in the loft, hot storage tank in the spare room next to the 3 Way valve + circulatory pump, a Glowworm Ultimate 30FF boiler, Danfoss CP15 programmer, room stat and 6 rads in total.
The house is about 12 or 13 years old an i wouldn't be suprised if the people that had it before us (4 years we've lived there) have done no maintenance.
We always had a problem where the heating wouldn't come on unless HW was needed, and sometimes never at all.
After a while, a plumber came out and replaced the motor in the valve controller unit and it worked perfectly for a long time.
While he was here, he suggested the pump would need replacing soon, before it karked it all together. THere's loads of built up limescale around the valves because of leaking joints.
So over the last 5 months, there's been more and more strange a'happenins and a'moanins from the rads/boiler/under the cupboard.
And then, it stopped.
It all stopped working and had gone kaput. I took a day off work and found out the pump had stopped working. I replaced the pump and the valves with new ones. I also replaced the rad in the upstairs bathroom as it had a tiny leak on the bottom.
While the system was drained off, i put some cleaner goop into the header tank. Before that i mopped the header tank out of the crap that was in there. I filled back up, opened all the valves on all the rads and ran it round for a day.
Then i shut off all but one rad and washed it round that for an hour, then alternated through all the rads in the house. After, i drained and filled and drained then refilled with some inhibitor.
Bled the system and it's all pretty much working well. Except for the valve thing.
I've taken the motor box unit off the valve and have been trying to operate it manually.
Can someone tell me if there is a standard for these things? I'm trying to imagine what it looks like inside to figure out the positions.
From that, i want to monitor the white box and see if that is working correctly. I suspect not, but it could be the programmer not sending the right signal to it, perhaps?
Why would the heating only be on when the HW is called for?
Programmer is asking for both CH + HW
Room stat is calling for CH
Tank stat is calling for HW
Pump is on, rads hot, tank pipes hot, tank temp increases.
As soon as the tank hits the right temperature, everything turns off. Straight away the pump stops and the valve moves.
Although, now it's not doing that.
Can someone tell me the correct sequence of priority or something to this system?
How should i try and tell if it's the motor in the valve or if it's the programmer not sending the right signal?
I should be able to have HW, HW+CH or just CH, right? Up till now, i've just been eeking up the tank stat, but water at 80o aint good!
Thanks for any help you can give me!