Service Water Connection (Pressure-Proof) - AE EKH-S Montage- Und Bedienungsanleitung

SERVICE WATER CONNECTION (PRESSURE-PROOF)

Any warranty for our water heaters shall be rejected in case of use of unsuitable or inoperative storage
connector fittings as well as an exceedance of the specified operating pressure.
All storage tanks and boilers with "Max. operating pressure 6 bar" or "Max. operating pressure 10 bar"
on their power rating plate are pressure-resistant storage tanks. The connection/connecting components
(e.g. safety valve, pressure reducer) are to be designed/dimensioned in accordance with national stan-
dards and regulations (e.g. DIN 1988-20; ÖNORM EN 806-2).
Attention: The mains water pressure must match the safety valve, if required, a pressure reducer
should be used!
The water plumbing must only be implemented using a tested diaphragm safety valve or a diaphragm
safety valve combination (connector fitting for pressure-type storage tanks)!
A safety valve combination consists of a shutoff, test, non-return, drain and safety valve with an expansi-
on water drain and is installed between the cold water supply line and the cold water supply (blue) of the
storage tank in the order as drawn.
The following must principally be observed:
In order to ensure a flawless function of the connector fitting, it must only be mounted in frost-protected
rooms. The drain of the safety valve must be open and observable or the outlet pipe from the drop collec-
tor (expansion water funnel) must lead into the sewer, so that neither frost nor clogging by dirt or anything
similar may cause any malfunction. Make sure that the drip cup is not blocked.
Furthermore, it must be observed that the drain pipe of the safety valve must be installed with a steady
downward inclination.
No shutoff valve or other throttling must be installed between the safety valve and the cold water supply
of the storage tank. The safety valve must be set to a response pressure that is lower than the nominal
pressure (6 bar) of the storage tank. The cold water supply line must be rinsed out before the storage tank
is connected finally. The discharge openings of the safety valves (domestic water and heating circuits)
must open out into an appropriate drainage object in order to avoid any damage caused by the escape
of operating fluid.
After completed plumbing and bubble-free filling of the storage tank, the connector fitting must be che-
cked for functionality.
a) In order to avoid a blockage of the venting facility of the safety valve due to furring, the venting facility of
the safety valve must be operated from time to time during operation of the system. It must be observed
whether the valve closes again after releasing the venting facility and whether the water in place runs
off completely through the funnel or the blow-off pipe.
b) For safety valves installed ahead of water heaters, it must be observed whether the safety valve res-
ponds during heating of the water heater. This can be identified by the exit of water from the blow-off
pipe.
Tank
EN
27