Safety Instructions - Wolf MGK-2-390 Installation Instructions Manual

Authorised personnel should read these instructions before any installation, commissioning or maintenance work. Observe
the instructions given in this document. Failure to observe these installation instructions voids any WOLF warranty. In
some countries, the installation of a gas boiler must be notified to and approved by the relevant gas supply company.
Please note that regional permits may be required for the flue system and the condensate drain into the public sewer.
Before installation work begins, the local flue gas inspector and water authority must be informed. The boiler must be
installed, commissioned and maintained by qualified and trained personnel only. In accordance with VDE 0105 Part 1,
work on electrical components (e.g. control unit) must only be carried out by qualified electricians. VDE/ÖVE regulations
and those of your local power supply utility company are applicable to electrical installation work. Only operate the boiler
within its output range, which is stated in the technical documentation supplied by WOLF. Intended use of the boiler refers
to the exclusive use for hot water heating systems in accordance with DIN EN 12828. Never remove, bypass or otherwise
disable any safety and monitoring equipment. The boiler must only be operated if it is in perfect technical condition. Any
faults and damage with potential impact on safety and which might limit the safe use of the equipment must be remedied
immediately by a qualified contractor. Only replace faulty components and equipment with original WOLF spare parts.
The following symbols are used in these instructions. This
important information concerns personal as well as
operational safety.
"Safety instructions" are instructions with
which you must comply exactly, to prevent risks
and injuries to individuals and damage to the
boiler.
Danger due to live electrical components.
Please note: Turn OFF the ON/OFF switch before
removing the casing.
Never touch electrical components or contacts
when the ON/OFF switch is in the ON position.
This can result in a risk of electrocution that
could lead to injury or death.
The terminals are live even when the ON/OFF
switch is in the OFF position.
"Caution" indicates technical instructions that
Caution
you must observe to prevent boiler damage and
malfunctions.
Working on the system
- Gas systems: close the gas shut-off valve and ensure that
unauthorised reopening is prevented.
- Isolate the system from the power supply (e.g. by removing
a separate mains fuse or by means of a mains electrical
isolator, heating emergency stop switch) and check to
ensure that there is no voltage.
- Safeguard the system against restarting.
Danger if you smell gas
- Close the gas shut-off valve.
- Open the windows.
- Do not operate electrical switches.
- Extinguish naked flames.
- Phone the gas supply utility company and approved
contractor from an external location.
4

2. Safety instructions

Fig: Control box
Danger from electrical voltage
Fig: Ignition transformer, high voltage ignition electrode, gas
combination valve, gas pressure switch, fan, combustion
chamber.
Danger from electrical voltage, escaping gas may cause
poisoning or an explosion, risk of burning through hot
components.
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