4
■
Inform all persons in the vicinity of the
system about the type of work to be
carried out.
■
Secure the area surrounding the work
area.
Further measures before starting work
on the refrigerant circuit with flammable
refrigerants (R32):
■
Remove all flammable materials and
ignition sources from the immediate
vicinity of the heat pump.
■
Before, during and after the work,
check the surrounding area for escap-
ing refrigerant using a suitable refriger-
ant detector.
This refrigerant detector must not gen-
erate any sparks and must be suitably
sealed.
■
A CO
2
or powder extinguisher must be
to hand in the following cases:
–
Refrigerant is being topped up.
–
When soldering or welding work is
being carried out.
■
Display signs prohibiting smoking.
Danger
Damage to the refrigerant circuit
can cause refrigerant to enter the
hydraulic system. This can cause
serious damage to health.
After completion of the work, pro-
fessionally vent the hydraulic sys-
tem on the primary and secondary
sides.
Repair work
!
Please note
Repairing components that fulfil a
safety function can compromise the
safe operation of the system.
Replace faulty components only
with genuine Viessmann spare
parts.
Auxiliary components, spare and
wearing parts
!
Please note
Spare and wearing parts that have
not been tested together with the
system can compromise its func-
tion. Installing non-authorised com-
ponents and making non-approved
modifications or conversions can
compromise safety and may invalid-
ate our warranty.
For replacements, use only original
spare parts supplied or approved by
Viessmann.
Safety instructions for operating the system
What to do if water escapes from the
appliance
Danger
If water escapes from the appliance
there is a risk of electrocution.
Switch OFF the heating system at
the external isolator (e.g. fuse box,
domestic distribution board).
Danger
If water escapes from the appliance
there is a risk of scalding.
Never touch hot heating water.
Safety instructions
Safety instructions
(cont.)
6150148
