Description Of Application; Guaranteed Compatibility Of The Communication Module With Compr. Unit; Permitted Capacity Of The Heat Exchanger In The Hvac Equipment - LG multi V ARUM Series Installation Manual

Humidity
Maximum altitude
Degree of pollution
Storage conditions
Temperature
Humidity

3. DESCRIPTION OF APPLICATION

The communication module is designed for external control of an outdoor compressor unit called LG Electronics
model range "MULTI V **" in applications where the unit serves as the source of cold/heat in HVAC systems.
The superior HVAC control system defines the operational mode and power requirements.
The communication module is installed in a plastic box including the necessary power supply. The delivered
system includes refrigerant temperature sensors installed at the input and output of the heat exchanger in the
HVAC equipment.
The module has an output for controlling a bipolar electronic expansion valve - model EX4--, EX5--, EX6--
(ALCO/Emmerson).
In an application where the compressor unit is used as a source of refrigeration, expansion valves with a one-
way refrigerant flow are used, i.e. EX4-M21, EX5-U21, EX6-M21.
In applications where the compressor unit is used as a heat source or as a source for several air handling
units/exchangers, it is necessary to use expansion valves with bidirectional flow, i.e. EX4-U31, EX5-U31, EX6-
M31.
The KM113.27UU module has 1 analogy input, 4 digital inputs, 2 digital outputs and 2 communication ports
(RS485) for controlling the compressor unit. The MODBUS input/output is intended for communication with the
superior I&C system. The "POWER" output is intended for direct synchronous reduction of the compressor unit
output according to the current power requirement.
3.1 GUARANTEED COMPATIBILITY OF THE KM113.22MV2 MODULE WITH COMPR.
UNITS
Model range
MULTI V WATER IV
MULTI V WATER IV HEAT RECOVERY
MULTI V S WATER

3.2 PERMITTED CAPACITY OF THE HEAT EXCHANGER IN THE HVAC EQUIPMENT

Cooling performance kW
kW kBtu/h
05 18
07 24
10 36
12 42
14 48
2020/07/23
MULTI V 5
MULTI V S
Heat exchanger capacity kW
Cooling mode
4.6 5.6
5.7 8.2
8.3 10.6
10.7 12.3
12.4 14.1
0 to 90 % without vapour condensation
2000 m
2
-25 °C to +60 °C
0 to 90 % without vapour condensation
Heat pump mode
5.1
6.4
9.3
12.0
13.9
Name of the outdoor unit
ARUM**LTE5
ARUN**GSS0 ARUN**LSS0
ARWN**LAS4
ARWB**LAS4
ARWN**GA0
Expansion valve
6.3 EX4-M21 / EX4-U31
9.2 EX4-M21 / EX4-U31
11.9 EX4-M21 / EX4-U31
13.8 EX4-M21 / EX4-U31
15.9 EX4-M21 / EX4-U31
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