Hello. The situation looks like this: Coal furnace with pump on the return. A Now I want to add a pump with a mixer to the floor heating on the supply. Question: 1. Will all radiators be heated when both pumps are running? 2. Is it better to install the pump in the furnace on the feed. I am...

Hello, it is not according to the art, but I assumed it three times because there was no other option and it works everywhere. Best regards.

What is the floor area of the floor heating?

There will be 2 sections: 1.70 running meters of pipe. 2.80 running meters of pipe. Floors of 10 and 12 m2.

I can see there is no interest in my question. Among so many professionals, is there no help?

Ok. Thanks for the information. And what would it have to look like in order to be art? Pump from the furnace on the feed? Maybe a mixer somehow?

The trick is that two pumps are not installed because they can disturb the water flow, even if they are identical pumps.

hello, buddy Radek, please expand your thought, because you don't know what you meant when you wrote that you don't install two pumps. It's a bit of an innovative solution so that everything runs on one pump. Regards.

First of all, the pump that is already in circulation will have a different capacity, for the pump you will install additionally, even if they are identical. I ignore the diameter of the pipes. Larger diameter at the furnace, smaller diameter at the manifold, everything matters here, the pump will always mix the water where it is lighter, that's the whim of these pumps.

hello, buddy, pay attention that one pump is on the return, and the other is to be on the power supply, the installation should be properly balanced so that the resistances are the same and it will work.

So how do you easily convert the installation to run these 3 floor sections?

Just advise my colleague how to do it, install balancing valves?

[Solved] Central heating pump on the return. The question is how to install a mixer with

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#1 16782483 26 Oct 2017 11:38

Radekwladek Radekwladek

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Post #1
16782483 26 Oct 2017 11:38

Hello. The situation looks like this:
Coal furnace with pump on the return. A Now I want to add a pump with a mixer to the floor heating on the supply. Question:
1. Will all radiators be heated when both pumps are running?
2. Is it better to install the pump in the furnace on the feed.
I am asking for advice. Thanks.

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#2 16782733 27 Oct 2017 14:43

Anonymous Anonymous

Anonymous

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Post #2
16782733 27 Oct 2017 14:43

What is the floor area of the floor heating?
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#3 16782995 27 Oct 2017 17:04

Radekwladek Radekwladek

Level 7

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Post #3
16782995 27 Oct 2017 17:04

There will be 2 sections:
1.70 running meters of pipe.
2.80 running meters of pipe.
Floors of 10 and 12 m2.
#4 16787072 29 Oct 2017 14:49

Radekwladek Radekwladek

Level 7

» | Topic author Helpful post? (0)

Post #4
16787072 29 Oct 2017 14:49

I can see there is no interest in my question.
Among so many professionals, is there no help?
Helpful post

#5 16787618 29 Oct 2017 17:47

roman 18 roman 18

Level 24

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Helpful post
Post #5
16787618 29 Oct 2017 17:47

Hello, it is not according to the art, but I assumed it three times because there was no other option and it works everywhere. Best regards.
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#6 16788673 30 Oct 2017 02:34

Radekwladek Radekwladek

Level 7

» | Topic author Helpful post? (+3)

Post #6
16788673 30 Oct 2017 02:34

Ok. Thanks for the information.
And what would it have to look like in order to be art?
Pump from the furnace on the feed?
Maybe a mixer somehow?
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#7 16789813 30 Oct 2017 18:15

Anonymous Anonymous

Anonymous

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Post #7
16789813 30 Oct 2017 18:15

The trick is that two pumps are not installed because they can disturb the water flow, even if they are identical pumps.
#8 16789846 30 Oct 2017 18:25

roman 18 roman 18

Level 24

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Post #8
16789846 30 Oct 2017 18:25

hello, buddy Radek, please expand your thought, because you don't know what you meant when you wrote that you don't install two pumps. It's a bit of an innovative solution so that everything runs on one pump. Regards.
#9 16789863 30 Oct 2017 18:31

Anonymous Anonymous

Anonymous

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Post #9
16789863 30 Oct 2017 18:31

First of all, the pump that is already in circulation will have a different capacity, for the pump you will install additionally, even if they are identical. I ignore the diameter of the pipes. Larger diameter at the furnace, smaller diameter at the manifold, everything matters here, the pump will always mix the water where it is lighter, that's the whim of these pumps.
#10 16789971 30 Oct 2017 19:10

roman 18 roman 18

Level 24

» | Helpful post? (0)

Post #10
16789971 30 Oct 2017 19:10

hello, buddy, pay attention that one pump is on the return, and the other is to be on the power supply, the installation should be properly balanced so that the resistances are the same and it will work.
#11 16789980 30 Oct 2017 19:14

Radekwladek Radekwladek

Level 7

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Post #11
16789980 30 Oct 2017 19:14

So how do you easily convert the installation to run these 3 floor sections?
#12 16790041 30 Oct 2017 19:33

Anonymous Anonymous

Anonymous

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Post #12
16790041 30 Oct 2017 19:33

roman 18 wrote:
such an installation should be properly balanced so that the resistance is the same and it will work.

Just advise my colleague how to do it, install balancing valves?
#13 17237951 24 May 2018 11:46

Radekwladek Radekwladek

Level 7

» | Topic author Helpful post? (+3)

Post #13
17237951 24 May 2018 11:46

Mounted as in the "painting "
It works.
Both pumps in 1 speed.
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Topic summary

The discussion revolves around the installation of a mixer pump for floor heating in a system that already has a coal furnace with a return pump. The main concerns include whether all radiators will heat effectively when both pumps are operational and the optimal placement of the new pump. Participants highlight that installing two pumps can disrupt water flow due to differing capacities and resistances, suggesting that proper balancing is crucial. The conversation also touches on the need for balancing valves to ensure efficient operation across multiple floor heating sections.
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