Drazice OKC 160 NTR / BP Bedienings- en installatiehandleiding - Pagina 10

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2.3 PLUMBING FIXTURE

Heaters are connected to plumbing fixtures as shown in (Figure 3, Figure 6).

For potential disconnection of the heater, the service water inlets and outlets must be

provided with screw coupling Js 3/4". The safety valve is mounted on the cold water inlet

identified with a blue ring.

Each hot service water pressure heater must have a safety valve with a membrane spring.

The safety valve must be easily accessible, as close to the heater as possible. The inlet pipes

must have at least the same clearance as the safety valve. Safety valve is placed high enough

to secure dripping water drain by gravity. We recommend mounting the safety valve onto a

branch pipe. This allows easier exchange without having to drain the water from the heater.

Safety valves with fixed pressure settings from the manufacturer are used for the assembly.

Starting pressure of a safety valve must be identical to the maximum allowed heater

pressure, and at least 20 % higher than the maximum pressure in the water main. If the

water main pressure exceeds such value, a reduction valve must be added to the system. No

stop valves can be put between the heater and the safety valve. During assembly, follow the

guide provided by the safety equipment manufacturer.

Figure 2

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