16 Configuration
Installation and operation manual
39
LREN8~12A7 + LRNUN5A7
CO
₂
ZEAS outdoor unit and capacity up unit
4P704141-1B – 2022.12
16.1.3
Field setting components
DIP switches
Use DS1 to set the target evaporating temperature for the
refrigeration side. Do NOT change DS2.
OFF
ON
1 2 3 4
DS1
OFF
ON
1 2 3 4
DS2
DS1
Target evaporating
temperature
OFF
ON
1 2 3 4
5°C
OFF
ON
1 2 3 4
0°C
OFF
ON
1 2 3 4
–5°C
OFF
ON
1 2 3 4
(a)
–10°C
OFF
ON
1 2 3 4
–15°C
OFF
ON
1 2 3 4
–20°C
OFF
ON
1 2 3 4
–25°C
OFF
ON
1 2 3 4
–30°C
OFF
ON
1 2 3 4
–35°C
OFF
ON
1 2 3 4
–40°C
(a)
Factory setting
Use DS2 to define a system layout with or without capacity up unit.
NOTICE
When installing a capacity up unit it is mandatory to put
switch 4 ON.
If DS2 is not set correctly, the capacity up unit will NOT
operate and no error code is displayed on the PCB of the
outdoor unit.
DS2
Capacity up unit installation
OFF
ON
1 2 3 4
With capacity up unit
(a)
OFF
ON
1 2 3 4
Without capacity up unit
(a)
If there is no electrical connection to the capacity up unit, an error
code will be displayed on the outdoor unit.
Push buttons
Use the push buttons to make the field settings. Operate the push
buttons with an insulated stick (such as a closed ball-point pen) to
avoid touching live parts.
7-segment display
The display gives feedback about the field settings, which are
defined as [Mode-Setting]=Value. Value is the value we want to
know/change.
Example:
Description
Default situation
Mode 1
Mode 2
Setting 8
(in mode 2)
Value 4
(in mode 2)
16.1.4
To access mode 1 or 2
After the units are turned ON, the display goes to its default
situation. From there, you can access mode 1 and mode 2.
Initialisation: default situation
NOTICE
Turn ON the power 6 hours before operation in order to
have power running to the crankcase heater and to protect
the compressor.
Turn on the power supply of the outdoor unit, capacity up unit, and
all indoor units. When the communication between the units is
established and normal, the display indication state will be as below
(default situation when shipped from factory).
