7 Commissioning
Installation and operation manual
25
LRMEQ+4BY1
Air-cooled refrigeration condensing unit
4P545024-1 – 2018.09
Setting
(= binary)
Value
Description
LRMEQ*
LRLEQ*
[2‑6]
Address of the outdoor unit for communication with the Modbus
communication box (BRR9A1V1).
For more information, see the installation manual of the Modbus
communication box.
Address not set
Address 1
Address 2
Address 3
Address 4
Address 5
…
…
Address 63
[2‑13]
Correction of evaporating temperature during low‑noise operation.
With this setting the target evaporating temperature set with
settings [2‑0] and [2‑1] can be corrected for low‑noise operation
(see setting [2‑18])
(default)
+1°C
+2°C
+3°C
+4°C
+5°C
+10°C
+15°C
+20°C
+0°C
+25°C
[2‑17]
Adjustment of fan and compressor speed during low‑noise
operation.
With this setting the maximum fan and compressor speed can be
set for low noise operation (see setting [2‑18]).
(default)
Low noise step 1
Low noise step 2
Low noise step 3
Low noise step 4
Low noise step 5
[2‑18]
Low noise operation
With this setting one of three low‑noise operation modes can be
selected. Low‑noise mode can be activated by turning ON the
contact between terminals X2M/A and X2M/B. Refer to settings
[2‑13] and [2‑17] to set parameters for the low‑noise levels.
(default)
Correction of evaporating temperature (only
setting [2-13] applies)
Adjustment of fan and compressor speed (only
setting [2-17] applies)
Correction of evaporating temperature and
adjustment of fan and compressor speed (both
settings [2-13] and [2-17] apply)
INFORMATION
For LRMEQ3/LRLEQ3 outdoor units, low noise steps 2, 3,
and 4 have the same sound reducing effect.
6.1.9
To connect the PC configurator to the
outdoor unit
a
b
X41A
A1P
X41A
2
3
4
5
H J
ST
a
PC
b
Cable (EKPCCAB)
X41A
Connector
A1P
Outdoor unit main PCB
7
Commissioning
After installation and once the field settings are defined, the installer
is obliged to verify correct operation. Therefore a test run MUST be
performed according to the procedures described below.
7.1
Precautions when commissioning
CAUTION
Do NOT perform the test operation while working on
the indoor units.
When performing the test operation, NOT only the outdoor
unit, but the connected indoor unit will operate as well.
Working on an indoor unit while performing a test operation
is dangerous.
7.2
Checklist before commissioning
After the installation of the unit, first check the following items. Once
all below checks are fulfilled, the unit MUST be closed, ONLY then
can the unit be powered up.
You read the complete installation and operation
instructions, as described in the
installer and user
reference guide
.
Содержание LRLEQ3BY1
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