EWAQ+EWYQ005~007ACV3P
Packaged air-cooled water chillers and
packaged reversible air to water heat pumps
4PW33165-1D
Installation manual
9
Connection of the power supply
1
Using the appropriate cable (see above), connect the power
circuit to the L and N terminals on the main isolator switch inside
the switch box.
2
Connect the earth conductor (yellow/green) to the earthing
screw on the switch box mounting plate.
3
Fix the cable with cable ties to the cable tie mountings to ensure
strain relief.
Note: only relevant field wiring is shown.
Installation of the digital controller
The unit is equipped with a digital controller offering a user-friendly
way to set up, use and maintain the unit. Before operating the
controller, follow this installation procedure.
Wiring specifications
Mounting
1
Remove the front part of the digital controller.
Insert a slotted screwdriver into the slots (1)
in the rear part of the digital controller, and
remove the front part of the digital
controller.
2
Fasten the digital controller on a flat
surface.
3
Wire the unit.
Connect the terminals on top of the front part of the digital
controller and the terminals inside the unit (P1 to 6, P2 to 7).
4
Reattach the upper part of the digital controller.
First begin fitting from the clips at the
bottom.
Switch off the power supply before making any
connections.
NOTE
For easy connection of the wires, the back part of
the switch must be detached by turning the lever a
quarter turn and then pulling the rear part off the
switch.
Wire specification
Value
Type
2 wire
Section
0.75–1.25 mm
2
Maximum length
500 m
NOTE
The wiring for connection is not included.
The digital controller, delivered in a kit, has to be mounted
indoors.
NOTE
Be careful not to distort the shape of the lower part of
the digital controller by over tightening the mounting
screws.
1
Chiller unit
2
Rear part of the digital controller
3
Front part of the digital controller
4
Wired from the rear
5
Wired from the top
6
Notch the part for the wiring to pass through with nippers, etc.
NOTE
■
When wiring, run the wiring away from the
power supply wiring in order to avoid
receiving electric noise (external noise).
■
Peel the shield for the part
that has to pass through the
inside of the digital controller
case (
l
).
Be careful not to pinch the wiring when attaching.
1
P1
P2
1
1
6
2
3
4
5
P1
P2
1
