The comfort safety center DN 15 A25 is used to secure closed domestic hot water heaters (DHW) up to a maximum content of 150 liters, in accordance with DIN 1988, Part 200, DIN 4753, Part 1, DIN 4807, Part 5 and DIN EN 1488. The A25 safety center contains all components prescribed by DIN 1988 and DIN EN 1488 for the inlet-side equipment of DHW heaters. The equipment also includes a flow-through fitting with integrated maintenance shut-off and a flow-through diaphragm expansion vessel (DEV) with 8 l nominal volume in a compact design. The housing is made of lead-free brass.
The comfort safety center DN 15 A25 includes a double shut-off with integrated testing facility for the backflow preventer, a backflow preventer, a safety valve with stainless steel seat and discharge funnel, a flow-through fitting with integrated maintenance shut-off for the DEV, and a wall bracket. The special design of the group allows installation as an angle and straight-through form in horizontal and vertical lines. The diaphragm safety valve can be rotated by 360° to adapt to different installation conditions. The additional replacement cartridges (8 + 10 bar) included in the scope of delivery for the safety valve allow adaptation to different domestic hot water heater volumes and maximum operating pressures.
Technical data:
Inlet pressure: min. 2 bar, max. 16 bar
Operating pressure: max. 80 % of the response pressure of the safety valve
Operating temperature: max. 30 °C
Medium: Drinking water
Response pressure: 6, 8, 10 bar with enclosed cartridges
Installation position: any, safety valve not facing downwards
Flow rate: 0.7 m³/h at Δp 0.2 bar
2.1 m³/h at Δp 1.0 bar
Connection size: DN 15
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