4.20. 3 Bar Safety Valve
Subject
Description
Function of Part
It reduces the pressure in the installation
by discharging the water at the installation
water pressure above 3±0.3 bar.
Impact in Case of Malfunction
1- It may leak water at low pressures, causing
the installation pressure to drop.
2- It may cause damage to the hydraulic
components of the device by discharging at high
pressure.
Main Associated Error Codes
F37, F40
Diagnostics and Test Method
1- Checking whether the valve leaks water
when the water pressure in the central heating
circuit is between 0.8 - 2.5 bar
2- Opening pressure test
Maintenance Requirement
There is no special maintenance requirement.
Test definition
Test Method
Safety Valve Opening-Closing
Pressure Test
The central heating system is filled with water
by opening the filling tap. The safety valve
should open its discharge due to high water
pressure in the range of 2.7-3.3 bar and
continue to discharge until the water pressure
drops to the range of 2.5-2.7 bar.
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