Special Information; Operation; General Information; Safety Instructions - Stiebel Eltron WWS 20 Manuel D'utilisation Et Installation

SPECIAL INFORMATION | OPERATION

General information

- In the case of a permanent connection, the ap-
pliance must be able to be separated from the
power supply by an isolator that disconnects all
poles with at least 3 mm contact separation. Con-
tactors, mains isolators or fuses can be used for
this.
- Observe the safety measures to prevent contact
with dangerous 'live' currents.
- Observe the MCB/fuse protection required for
the appliance (see chapter "Specification / Data
table").
- In the event of damage to the power cable this
must always be replaced by a qualified contractor
authorised by the manufacturer, using original
spare parts.
- The appliance is pressurised. During the heat-up
process, expansion water will drip from the safety
valve.
- Install a type-tested safety valve in the cold water
supply line.
- The maximum pressure in the cold water supply
line must be at least 20 % below the response
pressure of the safety valve. If the maximum
pressure in the cold water supply line is higher,
install a pressure reducing valve.
- Size the drain so that water can drain off unim-
peded when the safety valve is fully opened.
- Fit the discharge pipe of the safety valve with
a constant downward slope and in a room free
from the risk of frost.
- The safety valve discharge aperture must remain
open to atmosphere.
38 | WWS 20

OPERATION

1. General information
The chapters "Special information" and "Operation" are intended
for both users and qualified contractors.
The chapter "Installation" is intended for qualified contractors.
Note
Read these instructions carefully before using the appli-
ance and retain them for future reference.
Pass on the instructions to a new user if required.
1.1

Safety instructions

1.1.1 Structure of safety instructions

KEYWORD Type of risk
!
Here, possible consequences are listed that may result
from failure to observe the safety instructions.
f Steps to prevent the risk are listed. f
1.1.2 Symbols, type of risk
Symbol Type of risk
Injury
!
Electrocution
Burns
(burns, scalding)
1.1.3 Keywords
KEYWORD Meaning
DANGER Failure to observe this information will result in serious
injury or death.
WARNING Failure to observe this information may result in serious
injury or death.
CAUTION Failure to observe this information may result in non-seri-
ous or minor injury.
1.2

Other symbols in this documentation

Note
General information is identified by the adjacent symbol.
f Read these passages carefully. f
Symbol Meaning
Material losses
!
(appliance damage, consequential losses and environmen-
tal pollution)
Appliance disposal
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