Dip Switch Settings For Use With Gen 4 Indoor Units - LG MULTI V WATER 5 ARW Series Engineering Manual

DIP SWITCH SETTINGS FOR USE
WITH GEN 4 INDOOR UNITS
HRU Compatibility and Gen 4 Dip Switch Settings
PRHR*3 Heat Recovery Units
The PRHR*3A series of Heat Recovery units were released in June 2018, are not automatically backwards compatible with all LG
manufactured VRF air / water source units. The 3A series of Heat Recovery units will be compatible with many LG manufactured air / water
source units if the "Starting Production Date", the "Production Starting Serial No.," and / or the "Upgrade Software Service" dates fall after the
dates shown below (see table).
LG VRF systems can operate with both old 2A Heat Recovery units and new 3A Heat Recovery units, if the outdoor unit software has been
upgraded. If a system includes a mix of both old and new Heat Recovery units, the system design must follow 2A Heat Recovery unit series
piping rules.
Table 19: PRHR*3 Heat Recovery Unit to Air / Water Source Unit Compatibility.
Air / Water Source Units
Multi V 5 with LGREDº*
Multi V 5
Multi V S
Multi V Water IV
Multi V IV
Multi V II and III
Multi V Water II
*Low ambient performance with LGREDº heat technology is included in Multi V 5 air source units produced after February 1, 2019.
Generation 4 Equipment
LG's indoor units are designated Generation 4 (Gen 4). For Gen
4 indoor units to operate with Gen 4 indoor unit features, the air
conditioning system must meet the following requirements:
• All indoor units, heat recovery units, and air / water source units
must be Gen 4 or higher.
• All air / water source units must have Gen 4 or higher software
installed.
• Air / water source units DIP switch 3 must be set to ON
(factory default setting is OFF).
• All controllers must support Gen 4 indoor unit features.
The figure at right shows the outdoor unit DIP switch. All air and wa-
ter source units, indoor units, heat recovery units, and controllers in
a system must be Gen 4 compatible or the system will not operate
with Gen 4 indoor unit features.
64 | ELECTRICAL CONNECTIONS
Model Starting Production Date
ARUM****TE5 February 1, 2019
ARUM****TE5 February 1, 2018
ARUB060GSS4 October 1, 2018
ARWB****AS4 October 1, 2018
ARUB****TE4
ARUB****TE2
ARUB****TE3
ARWB****A2
Due to our policy of continuous product innovation, some specifications may change without notification.
©
LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG " is a registered trademark of LG Corp.
Production Starting Serial No.
1902xxx
1802xxx
1810xxx
1810xxx
N/A
N/A
N/A
Figure 12: Location and Setting of Outdoor Unit DIP Switch 3.
ODU/WSU DIP Switch No. 3
ON
OFF
1 2 3 4
1 2 3 4
Upgrade Software Service
September 28, 2018
September 28, 2018
September 28, 2018
N/A October 31, 2018
N/A
N/A
ON
OFF
5 6 7 1 2
5 6 7 1 2
N/A
N/A
N/A
3 4 5 6 7
3 4 5 6 7