Connect underfloor heating system on radiators

njm · by **njm** » 20/12/13, 18:42

Hello

My heating engineer must connect a heated floor (dry screed) from a 20m² veranda to my central heating with radiators
The existing installation includes a wood gasification boiler with 2 buffer tanks with temperature reading kit. all managed by regulation with motorized V3V and external sensor! Priority for heating in the house, DHW and finally buffer tanks. Temp. boiler outlet 75 ° and return 62 °
He offers to connect the PC to the radiator circuit with a second manual V3V and a circulator controlled by a room thermostat (Circulator on / off) which is located in the veranda
is this the right solution!
Thanks for your help

Philippe Schutt · by **Philippe Schutt** » 21/12/13, 18:20

It is a solution, yes. correct on a dry PC with low inertia, and having the advantage of being economical

njm · by **njm** » 22/12/13, 12:12

Hello

thanks for the info in fact I had a doubt, I thought it was better to operate the room thermostat on the V3V, but the heating engineer tells me that there is too much risk of sending water at more than 40 ° in the circuit and this prevents the circulator from running continuously

A+

PITMIX · by **PITMIX** » 22/12/13, 16:22

In place of the v3v my uncle installed a thermostatic shower valve which he installed in the same way as a v3v. The advantage is the price and the ease of finding in DIY stores. You set the desired temperature and then the thermostatic head unscrambles.

Forhorse · by **Forhorse** » 22/12/13, 16:35

that's really not stupid! it's a great tip. I keep under the elbow

PITMIX · by **PITMIX** » 22/12/13, 17:23

Yes i love it too : Cheesy:

, I think it was him (my uncle) who gave me a taste for DIY ...

njm · by **njm** » 22/12/13, 18:21

re

yes not stupid at all as a tip!
thank you for the info

Philippe Schutt · by **Philippe Schutt** » 22/12/13, 18:41

If the passage diameter is sufficient, yes good idea.
because with low-consumption circulators, we try to reduce pressure losses to the minimum.

jonule · by **jonule** » 23/12/13, 09:41

at worst, 2 in parallel? good must be set the same! =)

if not add X meters of heating tube with lots of elbows, it will not force the circulator? doesn't he have a given power?
or increase its speed?

Philippe Schutt · by **Philippe Schutt** » 25/12/13, 19:42

or bathtub mixer? it must already be better ... or the thermostatic solar outlet valves?
The elbows are of large radius, so we can ignore.
with a classic 30W circulator, it should be fine. it's the new ones, they can go down to 4-5w, so take advantage.

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Connect underfloor heating system on radiators