To Install The User Interface; To Install Optional Equipment; Configuration; Making Field Settings - Daikin SERHQ020BAW1 Installation And Operation Manual

6 Configuration

5.8.6

To install the user interface

The unit comes with a user interface offering a user-friendly way to
set up, use and maintain the unit. Before operating the user
interface, follow this installation procedure.
Wire specification
Type
Section
Maximum length
NOTICE
The wiring for connection is NOT included.
NOTICE
The user interface MUST be mounted indoors.
1 Insert a slotted screwdriver into the slots in the rear part of the
user interface, and remove the front part of the user interface.
2 Fasten the user interface on a flat surface.
NOTICE
Be careful NOT to distort the shape of the lower part of the
user interface by overtightening the mounting screws.
3 Connect the terminals of the user interface and the terminals
inside the unit (P1 to P1, P2 to P2) as shown in the figure.
f
a a
b
P2 P1 P2 P1
c
d e
a Unit
b Rear part of the user interface
c Front part of the user interface
d Wired from the rear
e Wired from the top
f Use nippers to notch the part for the wiring to pass through
NOTICE
▪ 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 user interface case (L).
L
4 Reattach the upper part of the user interface, starting with the
clips at the bottom.
Installation and operation manual
26
Value
2 wire
2
0.75~1.25 mm
500 m
CAUTION
Do NOT pinch the wiring when attaching.
If, in addition to the standard user interface, an optional user
interface (EKRUAHTB) is installed as well:
5 Connect the electrical wires of both user interfaces as
described.
6 Select a master and a slave user interface using the SS1
selector switch.
PCB
S S
SS1
M
S Slave
M Master
INFORMATION
Only the user interface set as master can be used as a
room thermostat.
5.8.7

To install optional equipment

For the installation of optional equipment, refer to the installation
manual which is delivered with the optional equipment or the
addenda delivered with this unit.
6 Configuration
6.1

Making field settings

6.1.1

About making field settings

INFORMATION
The LEDs and buttons are located in the outdoor unit.
If required, carry out field settings according to the following
instructions. Refer to the service manual for more details.
Pushbuttons and DIP switches
Item
Pushbuttons By operating the pushbuttons it is possible to:
▪ Change the mode.
▪ Perform field settings (demand operation,
low noise, etc).
DIP switches ▪ DS1 (1): COOL/HEAT selector
▪ DS1 (2~4): NOT USED. DO NOT CHANGE
THE FACTORY SETTING.
▪ DS2 (1~4): NOT USED. DO NOT CHANGE
THE FACTORY SETTING.
▪ DS3 (1+2): NOT USED. DO NOT CHANGE
THE FACTORY SETTING.
SERHQ020~032BAW1 + SEHVX20~64BAW
Description
Split packaged air-cooled water chiller
4P508019-2B – 2018.01