Wiring - York YLCA Series Technical Information

Wiring

Electrical connections
All established national regulations should be complied.
Each unit is supplied with a control box to which the power
supply will be connected through a fused main switch or an
automatic switch.
Loose cables can cause overheating of terminals or incorrect opera-
tion of the unit. Fire hazards may also exist. Therefore, make sure
all cables are connected firmly.
Rotational direction of Scroll compressors
The Scroll compressors operate correctly in one single rota-
tional direction. Although these units are protected by a phase
WARNING
order detector, when starting the equipment make sure the
rotational direction is correct.
If it is not correct:
- The compressor does not compress.
- It makes a strange sound.
- Amperage consumption is limited.
- It overheats in excess.
The phase detector should have the led son for operation
to be correct.
- Green led on means: Power ON.
- Yellow led on means: Relay ON.
Hydraulic connections
The hydraulic connections of the water intake and outlet of
the unit should be carried out respecting the intake and outlet
directions indicated.
A galvanised iron or copper tubing can be used, with dimen-
sions no lower than those indicated, and keeping in mind
the pressure drops at said connections and in the internal
exchanger of the installation.
During the winter season, with outdoor temperatures below
0° C, take precautions to avoid freezing of the water in the
tubing network.
Usually, a solution is filling the circuit with an antifreeze
mixture (glycol).
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