MC • Edition 2023.04 • No. 298 073 Rev. 0
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16 … 16
Safety-relevant components Design-related service life Standard
Permanent storage temperature
Cycle number Years
Valve proving systems 250 000 10 EN 1643
0…45 °C
32…113 °F
Gas pressure sensing device 50 000 10 EN 1854
Air pressure sensing device o 250 000 10 EN 1854
Gas failure switch N / A 10 EN 1854
Automatic burner control system
250 000 10
EN 298
EN 230
UV ame sensor
1
N / A 10 000 h³ ---
Gas pressure regulators
1
N / A 15
EN 88-1
EN 88-2
Gas valve with valve proving system
2
after error detected
EN 1643
Gas valve without valve proving system
2
DN ≤ 25 200 000
25 < DN ≤ 80 100 000
80 < DN ≤ 150 50 000
10 EN 161
Gas / air ratio control systems
N / A 10
EN 88-1
EN 12067-2
1
Decreasing performance on account of ageing
2
Gas families II, III
3
Operating hours
N / A not applicable
Storage periods
Lagerzeiten ≤ 1 Jahr verkürzen nicht die konstruktionsbedingte Lebensdauer / Storage time ≤ 1 year does not reduce the designed lifetime /
DUNGS recommends a maximum storage period of 3 years
The Pressure Equipment Directive (PED) and the Directive on the energy performance
of buildings (EPBD) require a regular inspection of heat generators to guarantee a high
degree of long-term eciency and thus minimal environmental impact.
There is a need to replace safety-related components after they reach the end of
their useful life:
Karl Dungs GmbH & Co. KG
Karl-Dungs-Platz 1
D-73660 Urbach, Germany
Telephone +49 7181-804-0
Fax +49 7181-804-166
info@dungs.com
www.dungs.com
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