New Boiler not heating water enough

wedger

Hi all
Recently got a whole heating upgrade in our house - new boiler (grant vortex indoor condenser) 3 zone system - room thermostats - Thermostat radiator valves the lot.

Question is our hot water doesn't heat up above 50 c. I have the boiler on for an hour in the morning for water and it heats to 45 c every morning but it's hardly hot enough for washing stubborn dishes etc. Left boiler on for 2 hrs and all we're getting is about 49c and 3 hrs a little over 50c.

Any ideas before I get the plumber back out again?

Wearb

What is your cylinder stat set to?
Your plumber should be able to advise you over the phone.

wedger

Wearb wrote: »

What is your cylinder stat set to?
Your plumber should be able to advise you over the phone.

Had the plumber out and he made a few adjustments said should be all ok now! But I don't think it is. Had water on from 6:30 to 7:30 reached 45c then switched it on for two more hours 9 to 11 and it only went up to 52c. I have thermostats set at 80c and below is picture of boiler controls.

Any idea what kind of temps water should be reaching? We only ever had electric before we moved here so all new to me!!!

XsApollo

I'm not a plumber and no expert.
Where is that big dial in the picture set to?
Min max or in the middle.
The higher you go with that the hotter it will be.

Wearb

Full pic of the cylinder and then a close up of the cylinder stat please?

wedger

XsApollo wrote: »

I'm not a plumber and no expert.
Where is that big dial in the picture set to?
Min max or in the middle.
The higher you go with that the hotter it will be.

It's set slightly off middle but there doesn't seem to be a notch for the dial to be set at...

wedger

Wearb wrote: »

Full pic of the cylinder and then a close up of the cylinder stat please?

Here's the stat with current reading of 51c

Then next pic is with stat set at 81c

Then the cylinder the little patch bottom left I assume is temp gauge for the thermostat?

Hope this helps a bit!

Wearb

I assume you are adjusting that stat with an app, have you tried it with the dial to see if it makes any difference?

There will be two pipes positioned roughly as in image below. After hot water only on for half an hour at 70c, feel those pipes to see if there is much difference between top and bottom one, be careful they might be hot.

wedger

Wearb wrote: »

I assume you are adjusting that stat with an app, have you tried it with the dial to see if it makes any difference?

There will be two pipes positioned roughly as in image below. After hot water only on for half an hour at 70c, feel those pipes to see if there is much difference between top and bottom one, be careful they might be hot.

Yes top one is hot and bottom one is cold....

Wearb

Was the cylinder part of the new job? Did it ever work?

Sounds like a circulating problem. Could be circulating pump, but it wouldn't be the first time someone kinked the coil in the cylinder, if that's what happened. You probably need a second opinion or get plumber back to sort it out properly.

JamesM

wedger wrote: »

Yes top one is hot and bottom one is cold....

Disregarding the numbers shown in your photos, the dial on the stat seems to be set quite low. If it has turned off the valve, the top pipe might be hot and the bottom cold. Turn up the dial a bit and see what happens.
Jim.

K.Flyer

I would start by ensuring that the probe at the end of the black cable is up tight against the wall of the cylinder and that the copper is scrapped clean with no insulation between the copper wall and the probe.
Then check that the red round wheel valve, on the lower of the two pipes described by Wearb, is open approx one and a half turns (anti-clockwise) from the closed position.