ᐅ Which pressure switch should be used to shut off the mechanical ventilation system with heat recovery?
Created on: 25 Aug 2016 19:48
T
Tommes78
Can someone tell me what electrical requirements I need to consider for a pressure switch to shut off the mechanical ventilation with heat recovery?
I tried to find information online but didn’t really succeed.
Does the pressure switch need to be installed near the chimney?
Does a hose need to be routed outside to measure the outside air pressure?
Does a cable need to be connected to the mechanical ventilation system to shut it off when the pressure switch is activated?
220 V (220 V) power supply near the pressure switch.
These are the points I would implement now. Can someone tell me if this is correct?
I tried to find information online but didn’t really succeed.
Does the pressure switch need to be installed near the chimney?
Does a hose need to be routed outside to measure the outside air pressure?
Does a cable need to be connected to the mechanical ventilation system to shut it off when the pressure switch is activated?
220 V (220 V) power supply near the pressure switch.
These are the points I would implement now. Can someone tell me if this is correct?
S
Sebastian7930 Aug 2016 17:13It does not measure pressure in the exhaust pipe, but in the installation room and outside air.
Just use the P4, that is completely sufficient.
Just use the P4, that is completely sufficient.
D
DragonyxXL31 Aug 2016 13:00What is the purpose of these sensors attached to the exhaust pipe?
S
Sebastian7931 Aug 2016 13:05I do not see it as particularly sensible to spend more money just to have the pressure switch activated only when the fireplace is burning.
A ventilation system can be operated in different ways in conjunction with a fireplace.
One method is, for example, to install a temperature sensor on the chimney or flue pipe.
When heating with the fireplace, this sensor turns off the ventilation system until the temperature has dropped again. This way, no pressure sensor is needed. This option is more suitable for people who rarely use their fireplace.
One method is, for example, to install a temperature sensor on the chimney or flue pipe.
When heating with the fireplace, this sensor turns off the ventilation system until the temperature has dropped again. This way, no pressure sensor is needed. This option is more suitable for people who rarely use their fireplace.
D
DragonyxXL2 Sep 2016 09:06AOLNCM schrieb:
A ventilation system can be operated in various ways in connection with a fireplace.
One way is, for example, to install a temperature sensor on the chimney or exhaust pipe.
When heating with the fireplace, the ventilation system is turned off as long as the temperature has not dropped again. This way, you avoid the need for a pressure switch. This option is more suitable for people who rarely use the fireplace.Basically correct, but this option seems more like an emergency solution to me. From my point of view, it definitely makes sense to distribute the heat from the fireplace through the ventilation system in the house.
It’s quite surprising how much things can differ.
I spoke with four stove installers/dealers, and each told me something slightly different. So, I contacted the chimney sweep.
For our new build with controlled ventilation, he said he’s only interested in the stove’s output relative to the cross-section of the flue pipe in the chimney system. The stove installer must certify the correct construction of the stove, and the ventilation contractor must confirm that the system extracts as much air as it supplies. Then, neither a pressure monitor, a room air-independent stove, nor a certification from the German Institute for Construction Technology (DIBt) are required.
The stove installer said that room air-independence becomes irrelevant after 4 or 5 years anyway, as the gaskets wear out accordingly. Also, it’s practically impossible to connect an external combustion air supply completely airtight to the living space.
We just don’t yet know how to handle these “freedoms” offered by the chimney sweep.
I spoke with four stove installers/dealers, and each told me something slightly different. So, I contacted the chimney sweep.
For our new build with controlled ventilation, he said he’s only interested in the stove’s output relative to the cross-section of the flue pipe in the chimney system. The stove installer must certify the correct construction of the stove, and the ventilation contractor must confirm that the system extracts as much air as it supplies. Then, neither a pressure monitor, a room air-independent stove, nor a certification from the German Institute for Construction Technology (DIBt) are required.
The stove installer said that room air-independence becomes irrelevant after 4 or 5 years anyway, as the gaskets wear out accordingly. Also, it’s practically impossible to connect an external combustion air supply completely airtight to the living space.
We just don’t yet know how to handle these “freedoms” offered by the chimney sweep.
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