Start-Up And Configuration; Pump Operation Configuration; Initial Start-Up At Low Outdoor Ambient Temperatures; Pre-Operation Checks - Daikin EWAQ-ACV3 Installation Manual

3 Wire the unit.
1 1
2
P2 P1
3
4
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.
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).
When wiring, run the wiring away from the
NOTE
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 ).
4 Reattach the upper part of the digital controller.
Be careful not to pinch the wiring when attaching.
First begin fitting from the clips at the
bottom.
EWAQ+EWYQ009~011ACV3 + EWAQ+EWYQ009~013ACW1
Packaged air-cooled water chillers and packaged
reversible air to water heatpumps
4PW51587-1A
6
P2 P1
5
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.
It is important that all information in this chapter is read
sequentially by the installer and that the system is
configured as applicable.
Pump operation configuration
NOTE
To set the pump speed, refer to
speed" on page

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
page 18.

Pre-operation checks

Checks before initial start-up
Switch off the power supply before making any
connections.
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
according to European and national regulations.
2 Fuses or protection devices
1
Check that the fuses or the locally installed protection devices
are of the size and type specified in the chapter
specifications" on page
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.
"Setting the pump
17.
"Field settings" on
11, according to the wiring diagrams and
25. Make sure that neither a fuse nor a
Installation manual
"Technical
16