Daikin EWAQ-ACV3, Руководство по установке

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EWAQ+EWYQ009~0 EWAQ+EWYQ009~013ACW1
Packaged air-cooled water chillers and packaged
reversible air to water heatpumps
4PW51587-1A
Installation manual
16
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 16, P2 to 16a).
4 Reattach the upper part of the digital controller.
First begin fitting from the clips at the
bottom.
S
TART
-
UP AND CONFIGURATION
The unit should be configured by the installer to match the installation
environment (outdoor climate, installed options, etc.) and user
expertise.
Pump operation configuration
Initial start-up at low outdoor ambient temperatures
During initial start-up and when water temperature is low, it is
important that the water is heated gradually. Failure to do so may
result in cracking of concrete floors due to rapid temperature change.
Please contact the responsible cast concrete building contractor for
further details.
To do so, the lowest leaving water set temperature can be decreased
to a value between 25°C and 37°C by adjusting the field setting
[9-01] (heating set point lower limit). Refer to
"Field settings" on
page 18 .
Pre-operation checks
Checks before initial start-up
After the installation of the unit, check the following before switching
on the circuit breaker:
1 Field wiring
Make sure that the field wiring has been carried out according to
the instructions and guidelines as described in the chapter
"Field wiring" on page 11 , according to the wiring diagrams and
according to European and national regulations.
2 Fuses or protection devices
Check that the fuses or the locally installed protection devices
are of the size and type specified in the chapter
"Technical
specifications" on page 25 . Make sure that neither a fuse nor a
protection device has been bypassed.
3 Earth wiring
Make sure that the earth wires have been connected properly
and that the earth terminals are tightened.
4 Internal wiring
Visually check the switch box on loose connections or damaged
electrical components.
5 Fixation
Check that the unit is properly fixed, to avoid abnormal noises
and vibrations when starting up the unit.
6 Damaged equipment
Check the inside of the unit on damaged components or
squeezed pipes.
7 Refrigerant leak
Check the inside of the unit on refrigerant leakage. If there is a
refrigerant leak, call your local dealer.
1 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.
P1 P2
1 1
6
2
3
4 5
P1 P2
16a 16 16a 16
1
It is important that all information in this chapter is read
sequentially by the installer and that the system is
configured as applicable.
NOTE
To set the pump speed, refer to "Setting the pump
speed" on page 17 .
Switch off the power supply before making any
connections.