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Similar to radiator dT's, is there a way to mathematically calculate the UFH pipe centres required to satisfy a given room's heat demands?
150mm-250mm centres are banded about online, with no real explanation, obviously smaller centres allow for lower water temps, but there must be a more...
We have a three zone heating system plus water cylinder (OSO Super S 250L) on an Valliant EcoTec 637. Two CH zones and a UFH zone. Boiler is rarely at maximum power rating, even at full tilt.
The UFH zone has it's own pump and the other two zones (three storey house) are just pumped from the...
I have some strange noises coming from the system, the majority are caused by the flow meters, the clicking noise. But there are other noises, ive managed to capture these on a video, keen to see what everyone thinks..
We have a Daikin Air Source heat pump feeding our hot water and under-floor 8 port manifold heating system.
The Daikin has just had its annual service and the engineer commented that the water looked discoloured and that the inhibitor needed replacing??
Is this an easy procedure? I'm pretty...
Hi all. I've currently got a system boiler with cylinder and rads on s-plan. I'm planning on installing UFH in my kitchen/diner and utility/downstairs loo. My question is around mixing valves and opentherm. Do mixing valves dynamically adjust the amount of cold being mixed in response to the...
Hi,
I have a 3 storey house built in 1904.
We put UFH in the house about 20 years ago. Works well with newish gas boiler.
Just curious... I know heat pumps are meant for tightly insulated modern house ... but..
Question: Given that my UFH is always at a low temperature - Could I feed UFH with...
I have a Neura heat pump and my thermostat has failed (Theben RAM 797 b). I'm looking to replace it with another more modern one I can use with an app etc.
My question is, can I replace it with any thermostat or do I require a very specific type thermostat to run the heat pump?
Thanks for...
Hi, I have a seaside apartment in Azerbaijan, currently a bare core & shell, not even internal walls yet, and am intending to put in wet UFH with ceramic tiles on top. Although we will get someone to do this for us, in my experience here it's always best to have a pretty good idea of what needs...
Hello
I'm looking at the different pipes for UFH, the prices vary a lot and I'm not sure about the differences between the products.
I'm doing two zones, one 127m the other 70m, both will be under screed.
JG barrier pipe will cost £400 but Pert-Evoh-Pert is only £170. Both say they are 15mm...
- Question
Hello,
I have a gas boiler in my apartment that heats a net area of 300 m2 with an underfloor heating system. The boiler has a capacity of 45 kW. There's no issue with the heating system, but I want to increase the hot water capacity. I plan to connect an external 200-liter boiler. How can I...
Hi there
As you can see from the video below, our pump exploded. The question I have is, this pump is added to a firebird condensing boiler and when we found this mess the boiler and pump were stil operating but the pressure in the boiler was reading 0. Should the pressure switch have kicked in...
Hi,
I have an 1904 redbrick 2,500 square feet house.
We have UFH on every floor. 3 Floors
House is reasonably well insulated but far from perfect.
Would there be any point in installing a "air to water" heating system that could link into my existing UFH??
bit of an odd one. UFH been working fine for about a year or two now.
today the pipes going to it before the zone valve are stone cold.
its a very basic system with Hive thermostatic valves controlling the rads upstairs and the zone valve downstairs.
Could the pipe be blocked?
- Question
Hi I have a Pulsar underfloor heating manifold with a leaky thermostatic valve. Plumber has managed to stop leak by tightening nut but this is 2nd time it’s leaked through ceiling in few months so was hoping to renew. However plumber been unable source a replacement/ equivalent as I know Pulsar...
Hi all,
I wanted to ask a general question about an underfloor heating system our plumber is proposing and if this solution will be sufficient to heat the rooms.
We have only a woodburning stove (15kW nominal output) that heats our open plan lounge/kitchen/diner directly (6.5kW from the...
Hi. We have recently bought the ground floor of a Victorian house, about 100 m2. The floors are all laid to very solid floor boards and the ceilings are 3m high. I've had some quotes from a couple of UFH firms, one says they'll lay their product directly onto the exisiting floor boards and the...
Two loop UFH system heating 24M2 with lots of glass.
Loop lenghts 90M each X 16MM OD piping
UFH output 9.52kw.
flow/return 55C/34C, dT 21C
fowrates, 3.0LPM & 3.5LPM = 6.5LPM total
Boiler Vaillant Ecotec plus 438.
flow/return 65C/59C due to high recirc rate required to get the boiler away at...
Do people with this type of mixed flow temperature control have any problems with achieving the required manifold flow temperature?
The one below I think is similar to the TIO Mixing unit.
In the unit below, the hot (boiler) water enters from the bottom left, red arrow, up through the "mixing...
This morning I heard knocking coming from my bathroom sink drain! The central heat outdoor unit is just outside the wall, and it was running. I went outside, but it seemed fine. When the heat unit went off, the knocking stopped. What the hey? I have a video, but I didn't see a way to add it to...
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