Discharge Of The Safety Valves; Emergency Stop - Daikin UATYA-BBAY1 Montage- Und Betriebsanleitung

In units with capacitors and/or inverters, certain components can remain live for several minutes even
after having turned off the main switch.
Wait 10 minutes before working on the electrical parts of the unit.
Circuits supplied from external sources (made with orange cable) can remain live even after the power
supply to the unit has been turned off.
Work on the unit only if there is sufficient lighting for the type of work to be carried out.
Failure to comply with the instructions in this manual and any modifications made to the unit without prior written
consent, will immediately void the warranty.
The law regulating the use of stratospheric ozone depleting substances prohibits the release of
refrigerant gases into the environment and obliges owners to recover and return them to the dealer or
take them to special collection centres at the end of their operational life.
The refrigerant contained in the refrigerant circuit is included among the substances subject to special
control regulations provided for by law and must therefore be disposed of as indicated above.
Particular care should be taken during maintenance operations in order to reduce refrigerant leaks as
much as possible.
2.1.1

Discharge of the safety valves

If present on the refrigerant circuit, installation requirements and/or national regulations lay down that the discharge
of the safety valves must be routed to the outside.
The conveying must be done with a pipe whose diameter must be at least that of the valve outlet, and the weight of
the pipe must not be borne by the valve.
Always direct the discharge to areas where the jet cannot cause harm to anyone.
Risk of burns following contact with hot and cold parts.
any material exhausted from the safety valves must be conveyed using pipes in compliance with
the national and/or European directives: the exhaust point must not be close to trap-doors, manhole
covers and any other opening where refrigerant may be contained; exhausted material must not
be conveyed close to fresh air inlets, doors or similar openings; exhausted material must not be
conveyed close to ignition sources, as defined in standard EN378-2.
It is responsibility of the installer to carry out a flammability risk assessment and a classification
of the danger zone at the site of installation, as required by standard EN378-3 and/or the national
regulations in place.
2.1.2

Emergency stop

In case of emergency, an immediate stop is carried out using the red disconnecting switch/master switch on the
electrical control panel by turning it to 0. When it is turned to 0, the disconnecting switch turns off the power to the
whole unit.
The main disconnect switch/master switch, used to electrically isolate the unit, is also intended for use
as an emergency device and it is only in an emergency that it should be used to stop the unit.
Except the case of an emergency stop, the unit must be stopped using its control software.
Translation from original instructions
Packaged Rooftop
10
We reserve the right to make changes without any prior notice.
4P645202-1
UATYA