flow & return temps

[lawsthedoors]

Hello,I have a checked the flow & return temps on the CH pipes, but getting very little difference flow is 23 return is 20.Is this correct ? the rads seem to get hot at the same time so system balanced ok?.Any advise plse .

 

[CES]

try the central heating forum, this place is for requesting engineers in your area.

 

[Dave]

Please check which forum you are posting in..moved to correct forum.

 

[diamondgas]

Hi lawsthedoors ... 23 and 20 ...? Is that degrees Centigrade respectfully? If so I think your boiler is turned off or cooling down. I'd be expecting much higher temperature readings, nearer 70-80 DegC, flow and return and ideally somewhere between 11 and 20 degC difference

 

[SimonJohns]

Hi lawsthedoors ... 23 and 20 ...? Is that degrees Centigrade respectfully? If so I think your boiler is turned off or cooling down. I'd be expecting much higher temperature readings, nearer 70-80 DegC, flow and return and ideally somewhere between 11 and 20 degC difference

Agree

Are you using a infrared thermometer If you are. They dont work on copper. Put some black insulation over the pipe and then read the temp of the tape

 

[quality]

Hi lawsthedoors ... 23 and 20 ...? Is that degrees Centigrade respectfully? If so I think your boiler is turned off or cooling down. I'd be expecting much higher temperature readings, nearer 70-80 DegC, flow and return and ideally somewhere between 11 and 20 degC difference

I would have said that's Centigrade or they living in a fridge if its Fahrenheit

 

[diamondgas]

I would have said that's Centigrade or they living in a fridge if its Fahrenheit

:rofl: to quick by half quality :rofl: Nice one

 

[GrahamM]

Hello,I have a checked the flow & return temps on the CH pipes, but getting very little difference flow is 23 return is 20.Is this correct ? the rads seem to get hot at the same time so system balanced ok?.Any advise plse .

Just because all rads are heating at same time does not mean the the system is balanced. Balancing is a slow laborious process that with the aid of a differential thermometer will allow you to open/restrict flow to the individual rad to give an approx difference of 10°C.

 

[SimonJohns]

Just because all rads are heating at same time does not mean the the system is balanced. Balancing is a slow laborious process that with the aid of a differential thermometer will allow you to open/restrict flow to the individual rad to give an approx difference of 10°C.

20 if it's a condensing boiler

 

[diamondgas]

I thought to ballance the difference was when you got OUCH one side and OUCHTYAFUCHIA the other ....... That's what i was taught when I was a lad

 

[dontknowitall]

Cracking one, Diamondgas!!

Lawsthedoors - just checking the basics first: - and my remark on the previous line is not aimed at you at all!!

Presumably all radiators are bled, the system's showing the correct pressure (if it's a sealed system) and the pump's bled?
Also, is the pump working properly?

These things, as you probably know, need to be done before balancing.

 

[GasmanxxxR1]

I would imagine that the original values given are the temp diff in degrees c

As in the flow is 20-23 degrees hotter than the return

Sounds about right for condensing boiler

 

[fuzzy]

20 if it's a condensing boiler

or 10 with a lower flow temp

 

[Howsie]

Ideally you want the return sub 60

 

[lawsthedoors]

sorry will try in correct forum.Thanks