ᐅ Connection for a Hydronic Stove

Created on: 23 Dec 2016 09:06
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Tapdance
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Tapdance
23 Dec 2016 09:06
Hello,

I am considering replacing my wood stove with a water-heated stove. The heating pipes also run behind my current stove. Is it possible to connect the stove to the heating circuit at any point? From what I understand so far, it is connected on the return line of the heating circuit.

I would appreciate any advice.
Mycraft23 Dec 2016 15:02
The house dates back to the 1970s and is uninsulated?

How often is the stove used? If you have a skilled heating engineer, it could be done, but from a control technology perspective it is a nightmare and often not worth the effort.
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Tapdance
23 Dec 2016 19:23
Thank you for the quick response. Yes, the house was built in 1968 and is not insulated, with a new gas boiler installed in 2010. I was thinking of a pellet stove that can also be fueled with wood and is water-heating. During the day, I lower the temperature to 17°C (63°F), and from around 5 p.m., I start the stove since I get wood for free. The idea is to preheat the apartment with pellets before I come home and then continue heating with wood. Currently, my heating costs are about €1200 per year for 160 m² (1720 sq ft), including a 50 m² (540 sq ft) granny flat where a retiree lives and keeps it heated continuously.
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nelly190
23 Dec 2016 19:24
There are quite a few things to consider.

The question is, what pipes run there? Cross-section? I’m not sure whether to connect the stove to the supply or return line. But theoretically, the stove has its own pump.

Before buying, also check with your chimney sweep about the annual inspection costs. I once heard something about 150–309 euros. I can’t say if that’s accurate.
wrobel26 Dec 2016 01:13
Hello

A water-heating stove always requires a buffer tank.
For every kW of heating output on the water side, at least 50 liters (13 US gallons) are needed. This generally ensures sufficient and consistent heat transfer as well as an adequate circulation volume. You can’t just connect to the supply and return lines directly.
Additionally, a fresh water supply and waste water connection are necessary for the thermal discharge safety system.

Olli
Mycraft27 Dec 2016 00:41
That’s exactly what I keep talking about... it sounds great in theory—you can use the waste heat instead of just letting it dissipate... but usually no one mentions upfront that you have to invest so much that it takes about 15 years to break even, and by then the system might already be reaching the end of its lifespan.