Daikin VRV III vs LG MULTI V Plus II
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
1. Design Flexibility/ Piping length & height
LG MULTI V PLUS II has world top level on Max. piping length(225m),
Max. Height difference(100m) between ODU & IDU.
Schematic diagram
Table
ODU
H1
f
a
1st branch
e
b
H
d
H2
IDU
c
LG
Daikin
Symbol
Max. Piping length
(Equivalent)
200
225
165
190
a+b+c
Max. piping length
between 1st branch to each IDU
40
40
90
90
Max. piping length
between 1st Branch & ODU
10
10
a+f
Max. Height difference
between ODU & IDU
100
100
50
90
H
Max. Height difference
between ODU & ODU
5
5
H1
Max. Height difference
between IDU & IDU
15
15
H2
Total Piping length
Description
b+c
(Optional condition, Refer to PDB)
(IF ODU is upper position than IDU)
(IF IDU is upper position than ODU)
300
300
1000 1000 a + b + c + d + e
(IF length between 1
st
branch to each IDU ≤ 40m)
(IF length between 1
st
branch to each IDU >40m)
Fig. The product design flexibility comparison between LG & Daikin
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
2. Inverter vs Constant Ratio
Inverter ratio of LG MULTI V Plus II is better than Daikin.
Constant
Daikin
VRV 16Hp
Inverter
100%
Inverter compressor
motor output : 1.4kW
80%
60%
Ave
44%
40%
20%
0%
Daikin
10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48
Constant
Constant compressor
motor output : 4.5kW*2
25% (Inv. Ratio)
LG
MULTI V Plus II 16HP
Inveter
100%
Inverter compressor
motor output : 5.4kW
80%
Ave
65%
60%
Constant compressor
motor output : 6.7kW
40%
20%
0%
10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48
LG
60% (Inv. Ratio)
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Specification of VRV III
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Specification of VRV III
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Specification of VRV III
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Specification of VRV III
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Specification of MULTI V Plus II
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. COP comparison with VRV III
<Heating Operation>
<Cooling Operation>
* TC: Total Capacity [kW]
* PI: Power Input [kW] (Comp + Outdoor fan motor)
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Design Flexibility / Piping length & height
■ Compressor capacity Comparison
■ Heat Exchanger Area Comparison
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Design limit of Daikin VRV III
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.
Appendix. Design limit of MULTI V PLUS II
Outdoor units
MULTI V Plus II
110m
ON
ON
ON
Indoor units
<DA Research Lab in Korea>
103m
Copyright ⓒ 2008 All rights reserved LG Electronics Inc.