Viessmann VITOCAL 150-A Operating Instructions For The System User page 4

Safety instructions
For your safety
Safety instructions for operating the system
Protect the system against third party
influence, damage and environmental
influences.
What to do if refrigerant escapes
from the outdoor unit
A low pressure fault may indicate escap-
ing refrigerant.
Danger
Escaping refrigerant can lead to fire
and explosions that result in very
serious injuries or death. There is a
risk of asphyxiation if it is breathed
in.
If there is a suspicion of escaping
refrigerant, note the following:
Ensure very good ventilation
■
especially in the floor area of the
outdoor unit.
No smoking! Prevent naked
■
flames and sparks. Never switch
lights or electrical appliances on
or off.
Initiate rescue measures for indi-
■
viduals.
Inform the authorised contractor.
■
From a safe position, switch off
■
the electricity supply for all system
components.
Danger
Direct contact with liquid and gas-
eous refrigerant can cause serious
damage to health, e.g. frostbite
and/or burns. There is a risk of
asphyxiation if it is breathed in.
Prevent direct contact with liquid
■
and gaseous refrigerant.
Never breathe in refrigerant
■
vapours.
Initiate rescue measures for indi-
■
viduals.
4
(cont.)
If there is a fire
Danger
Fire presents a risk of burns and
explosion.
From a safe position, switch off
■
the electricity supply for all system
components.
Notify fire service.
■
Initiate rescue measures for indi-
■
viduals.
Only attempt to extinguish the fire
■
if this poses no risk of injury. Use
a tested fire extinguisher, class
ABC.
What to do if the outdoor unit ices up
!
Please note
A build-up of ice in the condensate
pan and in the fan area of the out-
door unit can cause damage to the
equipment.
In case of ice formation, notify
■
heating contractor.
Do not use mechanical items/aids
■
for the removal of ice.
If ice regularly builds up on the
■
outdoor unit (e.g. in areas where
frost and heavy fog occur fre-
quently), have a contractor install
fan ring heating (accessories) that
is suitable for refrigerant R290
and/or an electric ribbon heater in
the condensate pan (accessories
or factory-fitted).