Viessmann VITOCAL 151-A Installation And Service Instructions Manual page 6

Safety instructions
Safety instructions
Installation
Frost protection
!
Please note
Freezing can cause damage to the
heat pump.
Thermally insulate all the
■
hydraulic lines.
In order to activate the frost pro-
■
tection function, electrically con-
nect the heat pump before filling
the secondary circuit. Switch on
the power supply. Switch on the
ON/OFF switch on the indoor unit.
Only fill the secondary circuit with
■
suitable fill water in accordance
with VDI 2035, not with media
containing antifreeze.
Connecting cables
Danger
With short electrical cables, should
there be leakage in the refrigerant
circuit, gaseous refrigerant may
reach the inside of the building.
Min. length of the electrical con-
necting cables between the indoor
and the outdoor unit: 3 m
6
(cont.)
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.
Do not undertake any repairs on
■
the inverter. Replace the inverter if
there is a defect.
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.