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Vitocal 100-AW AM2V Installation, Service and Operating
Safety, Installation and Warranty Requirements
The outdoor unit contains flammable refrigerant
R32. If there is a leak, the escaping refrigerant may
form a flammable or explosive atmosphere in the
ambient air.
1
WARNING
Risk of explosion: Escaping refrigerant may form a
flammable or explosive atmosphere in the ambient
air.
Take the following measures to prevent fire and
explosion:
H Keep ignition sources away, e.g. naked flames,
hot surfaces, electrical devices not free of ignition
sources, mobile devices with integrated batteries
(e.g. mobile phones, fitness watches, etc.).
H Permissible tools: All tools for working must be
designed and explosion protected in accordance
with the applicable standards and regulations
for refrigerant in safety groups A2L and A3,
e.g. brushless machines (cordless screwdrivers),
extraction equipment, disposal containers,
installation aids, vacuum pumps, conductive hoses,
mechanical tools of non-sparking material, etc.
Note:
The tools must also be suitable for the pressure
ranges in use. Tools must be in good working order.
H Do not use flammable materials, e.g. sprays or
other flammable gases.
H Discharge static: Before beginning work, touch
earthed objects, such as heating or water pipes.
H Do not remove, block or bridge safety equipment.
H Do not make any changes: Do not modify
the outdoor unit, inlet/outlet lines, electrical
connections/cables or the surroundings. Do not
remove any components or seals.
Working on the system
H Switch off the power supply to the indoor unit
and outdoor unit, e.g. at a breaker. Check that
the system is no longer live.
Note:
In addition to the control circuit there may be
several power circuits.
1
WARNING
Contact with live components can result in severe
injuries. Some components on PCB's remain live
even after the power supply has been switched off.
Prior to removing covers from the appliances, wait
at least 4 minutes until the voltage has completely
dropped out.
1
WARNING
H Safeguard the system against reconnection.
H Wear suitable personal protective equipment
when carrying out any work.
1
WARNING
Hot surfaces and fluids can result in burns or
scalding. Cold surfaces may cause frostbite.
H Prior to servicing or maintenance tasks, switch
off and allow the equipment to cool down or
warm up.
H Do not touch hot or cold surfaces on the
appliance, fittings or pipework.
Note:
Electronic assemblies can be damaged by
electrostatic discharge. Before beginning work,
touch earthed objects, such as heating or water
pipes, to discharge any static. R32 refrigerant is
an air displacing, colorless, flammable gas which
forms explosive mixtures with air. Refrigerant
drained must be properly disposed of by authorised
contractors. Perform the following measures before
beginning work on the refrigerant circuit:
H Check the refrigerant circuit for leaks.
H Ensure very good ventilation especially in the
floor area and sustain this for the duration of the
work.
H Secure the area surrounding the work area.
H Inform the following persons of the type of work
to be carried out:
– All maintenance personnel
– All persons in the vicinity of the system.
H Inspect the area immediately around the heat
pump for flammable materials and ignition sources:
Remove all flammable, movable materials and any
ignition sources from the safety zone.
H Before, during and after the work, check the
surrounding area for escaping refrigerant using an
explosion-proof refrigerant detector suitable for
R32. This refrigerant detector must not generate
any sparks and must be suitably sealed.
H A CO
or powder extinguisher must be to hand in
2
the following cases:
– Refrigerant is being drained.
– Refrigerant is being topped up.
– Soldering or welding work is being carried out.
H Display signs prohibiting smoking.
Safety
5
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