REMKO EWS 200 E, Руководство по сборке и эксплуатации

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A type-examination tested safety group in accord-
ance with DIN 1988 must be installed in the water
connection of the cold water line (cold water
supply) for closed hot water heaters.
The water connection may only take place through
a tested diaphragm safety valve or a diaphragm
safety valve/connection fitting combination (not a
piston valve) for pressure-tight storage tanks! A
safety valve combination comprises a shut-off,
testing, return flow, drainage and safety valve with
expansion water drain and is installed between the
cold water supply and cold water feed of the
storage tank in the sequence shown in the fol-
lowing diagram:
S 08
EWS
ZWP
3 4 5 8 9 6 1 7 2
A
B C
Fig. 5: Tank connection according to DIN 1988
1: Shut-off valve
2: Pressure reducer
3: Test device
4: Backflow preventer
5: Connection point for measuring device
6: Shut-off valve
7: Safety valve with drainage line and funnel trap
8: Through-flow diaphragm expansion vessel (rec-
ommended if pressure fluctuations are antici-
pated on the domestic connection side)
9: Flow sensor for dynamic hygiene function
A: Storage tank
B: Hot water
C: Cold water
In order to ensure the faultless function of the con-
nection fitting, it may only be installed in frost-pro-
tected rooms. The discharge of the safety valve
must be open and observable and the discharge
line from the drip catcher (expansion water funnel)
must be routed to the sewer so that neither frost
nor back-ups from dirt or the like can cause a mal-
function.
There may not be a shut-off valve or any other type
of flow restrictor installed between the safety valve
and the cold water feed of the tank.
The safety valve must be set to a triggering pres-
sure which is below the nominal pressure of the
storage tank. After the conclusive connection of
the tank, the cold water supply line must be rinsed
out.
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