Drazice OKC 200 NTRR / BP Operation And Installation Manual - Page 12

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Drazice OKC 200 NTRR / BP Operation And Installation Manual
Required pressures – Table 5. We recommend that the hot water distribution from the heater was as short
as possible to minimise heat losses.
ADMISSIBLE
SAFETY VALVE
OPERATING
STARTING
OVER-
PRESSURE
PRESSURE OF
[MPa]
WATER
HEATER [MPa]
0.6
0.7
1
Table 5
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 equipment, follow Standards.

2.4 ELECTRIC WIRING

2.4.1 ELECTRIC INSTALLATION GENERAL INFORMATION

MAXIMUM
PRESSURE IN
COLD WATER
PIPES [MPa]
0.6
up to 0.48
0.7
up to 0.56
1
up to 0.8
0 - Air outlet valve
U – Shut-off valve
P1 - Safety valve with backflow flap
P2 - Safety valve for heating circuit
M - Manometer
Z – Test valve
V - Drain valve
Figure 4
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