Drazice OKC 160 NTR / BP Betriebs- und Installationshandbuch - Seite 9

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2.3 PLUMBING FIXTURE

Connection of appliances to plumbing fixtures is illustrated on (figure 4, figure 6).

For potential disconnection of the appliance, 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 appliance must have a safety valve with a membrane spring.

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

pipes must have at least the same clearance as the safety valve. The 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 appliance. 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

appliance 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

Figure 2

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