Filling And Emptying; Filling; Emptying; Service Water Connection (Pressure-Proof) - Austria Email SISS 350 Bedienungs- Und Montageanleitung

5. Filling and Emptying

5.1 Filling

It is bindingly necessary to fill resp. apply pressure to the inner service water tank first and then the buffer tank (hot water
area).

5.2 Emptying

When emptying the system, the buffer tank (hot water area) must be depressurised in the first step and then the service
water tank in the second step.
The enamelled service water tank may be destroyed in the case of a non-compliance with the filling or emptying
procedure!

6. 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. To avoid damage, it is necessary to construct the connection of
the storage tank with a detachable connection (union).
Leaks from the storage tank as a result of an improper connection and damage and consequential damage caused by this
are excluded from the guarantee and product liability.
All water heaters provided with a rating plate bearing the designation 'nominal pressure 10 bar' (atmospheric excess pres-
sure kp/cm²) are pressure-proof storage tanks and can be connected on a pressure-proof basis using a line pressure up
to 5.5 bar.
A pressure reducing valve must be installed in the cold water supply line should the line pressure be higher!
The water plumbing must be performed by means of a certified diaphragm safety valve or a diaphragm safety valve combi-
nation (connector fitting for pressure-proof storage tanks) only!
A safety valve combination consists of a shutoff, test, swing check, drain and safety valve with an expansion water drip and
is installed between the cold water supply line and the cold water supply of the storage tank in the order as drawn.
Principally, the following must be observed:
In order to ensure a flawless function of the connector fitting, the same must be mounted in frost-protected rooms only. The
drain of the safety valve must be open and observable and the outlet pipe from the drop collector (expansion water funnel)
must lead into the sewer, so that neither frost nor clogging by dirt and similar can cause any malfunction.
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 (10 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.
Basically, all the regulations of ÖNORM B 2531, DIN 1988 (EN 806), DIN 1717, VDI 2035 or the corresponding national
regulations and laws must also be observed.
After completed plumbing and bubble-free filling of the storage tank, the connector fitting must be checked for functionality.
Id.Nr.: 236921-12
14
U E
E