- 12 -
Required pressures - Table 4. We recommend that the hot water distribution from the heater was as short
as possible to minimise heat losses.
Figure 4
Table 4
Start-up
pressure of the
safety valve
[MPa]
Allowable
operational
overpressure
of the water
heater [MPa]
Maximum
pressure in the
cold water
pipes [MPa]
0,6
0,6
up to 0.48
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 \u268
CSN 06 0830.
2.4
ELECTRIC WIRING
Do not plug the water heater in HDO socket; it would not work properly in SMART
mode. The SMART mode (SMART HDO) will only work if 24/7 connected to power
supply.
2.4.1
ELECTRIC INSTALLATION GENERAL INFORMATION
In the electric wiring casing remove the partition corresponding with the input wire diameter of
8 or
10
(Figure 5). The degree of protection of electric parts of the heater is IP 44. Power input of electric element
is 2200 W.
U - Closure
P - Safety valve with
backflow valve
M - Manometer
Z - Test valve
V - Drain valve