Drazice OKCE 160 NTR Руководство по эксплуатации и установке - Страница 10

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Please find necessary pressure values in the below Table 3. For proper safety valve operation, a backflow

valve (Figure 4) must be mounted on the inlet pipes, preventing spontaneous heater draining and hot water

penetrating back into the water main. We recommend that the hot water distribution from the heater was

as short as possible to minimise heat losses. At least one demountable joint must be mounted between

the tank and every supply pipe. Adequate piping and fittings with sufficiently dimensioned maximum

temperature and pressure values must be used.

Figure 4

ALLOWABLE

SAFETY VALVE

OPERATING

START-UP

OVERPRESSUR

PRESSURE

E OF WATER

[MPa]

HEATER [MPa]

0.6

0.7

Table 3

Heaters must be provided with a discharge valve

mounted on the cold service water inlet to

the heater for potential disassembly or repair. When

assembling

the

security

the standard.

MAXIMUM

PRESSURE IN

COLD WATER

PIPES [MPa]

0.6

up to 0.48

0.7

up to 0.56

up to 0.8

equipment,

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