Electrical Connection; Power Wiring; Standard Units With Multi Point Power Supply Wiring; Units With Single-Point Power Supply Wiring - York eco YCAS Series Manual

ELECTRICAL CONNECTION

No additional controls (relays, etc.)
should be mounted in the control
panel. Power and control wiring not
connected to the control panel should
not be run through the control panel.
If these precautions are not followed
it could lead to a risk of electrocution.
In addition, electrical noise could
cause malfunctions or damage the
unit and its controls.
After connection do not switch on
mains power to the unit. Some inter-
nal components are live when mains
is switched on and this must only be
done by authorized persons.

POWER WIRING

All sources of supply to the unit must
be taken via a common point of isola-
tion (not supplied by YORK).
STANDARD UNITS WITH MULTI POINT POWER
SUPPLY WIRING

Units with Single-Point Power Supply Wiring

115VAC CONTROL SUPPLY TRANSFORMER

It is important to check that the cor-
rect primary tapping has been used
and that it conforms to the site high
voltage supply.
Removing high voltage power to the
chiller will remove the 115VAC sup-
ply voltage to the microprocessor cir-
cuitry and the evaporator heater. In
cold weather, this could cause serious
damage to the chiller due to evapora-
tor freeze-up. Do not remove power
unless alternate means are taken to
assure operation of the evaporator
heater.
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