Panasonic WU-216MF2U9 - Technical Data Manual - Page 23

Example 1, Example 2

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11.. MMooddeell SSeelleeccttiinogn aanndd CCaappaacciittyy CCaallccuullaattoorr Design of 3WAY VRF SYSTEM Design of 3WAY VRF SYSTEM Example 1 Outdoor unit 1 L4: 99ft. (30m) Portion increased by one size is overlapped but only one size is increased. LF: 49ft. (15m) LH: 115ft. (35m) LG: 180ft. (40m) Type 48 L2': 238ft. (72m) Type 48 L2: 263ft. (80m) Type 09 Type 18 Type 18 1. Check the portion for one size increase. ΔL Total capacity of indoor units Length for sizing up L2 system L2' system 164ft. (50m) 139ft. (42m) 47,800 BTU/h (14kW) 95,600 BTU/h (28kW) 39ft. (12m) 66ft. (20m) 1 L2 combined indoor units Increase the discharge, suction and liquid tubes 39ft. (12m) by one size from the 1st distribution joint to be directed towards L2 indoor units. LF: Increase 39ft. (12m) by one size among 49ft. (15m). LG: No increase by one size L2' combined indoor units 2 Increase the discharge, suction and liquid tubes 66ft. (20m) by one size from the 1st distribution joint to be directed towards L2' indoor units. LF: Increase all 49ft. (15m) by one size LH: Increase 16ft. (5m) by one size among 115ft. (35m). 2. Final result Before sizing up After sizing up Tube length Size up length 3 LF ø1-1/8" / ø7/8" / ø1/2" ø1-3/8" / ø1-1/8" / ø5/8" 49ft. (15m) 49ft. (15m) LG ø3/4" / ø5/8" / ø3/8" No size up 131ft. (40m) 0 ft. (0m) LH ø7/8" / ø3/4" / ø3/8" ø1-1/8" / ø7/8" / ø1/2" 115ft. (35m) 16ft. (5m) * The LH is only 16ft. (5m) from the 2nd distribution joint. * The size increased portion is overlapped at the LF but it has only one size increase. 4 Example 2 Outdoor unit 1 Outdoor unit 2 L2: 197ft. (60m) LF: 66ft. (20m) LG: 33ft. (10m) 5 L4: 33ft. (10m) Type 15 Type 48 Type 48 1. Checking the portion for one size increase Δ L Total capacity of indoor units Length for sizing up 6 L2 system 164ft. (50m) 110,600 BTU/h (32.4kW) 66ft. (20m) L2 combined indoor units Increase the discharge, suction and liquid tubes 92ft. (28m) by one size from the 1st distribution joint to be directed towards L2 indoor units. LF: Increase 66ft. (20m) by one size. 7 LG: Increase 26ft. (8m) by one size among 33ft. (10m). 2. Final result Before sizing up After sizing up Tube length Size up length LF ø1-1/8" / ø3/4" / ø1/2" LG ø7/8" / ø3/4" / ø3/8" ø1-3/8" / ø7/8" / ø5/8" ø1-3/8" / ø7/8" / ø1/2" 66ft. (20m) 33ft. (10m) 66ft. (20m) 26ft. (8m) 8 * The LG is only 26ft. (8m) from the 2nd distribution joint.LG * It is possible to increase the LG to 33ft. (10m) by one size. 2 - 7 9

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Design of 3WAY VRF SYSTEM
2
- 7
2
1. Model Selection and Capacity Calculator
Type 48
Type 18
Type 18
Type 09
Type 48
L4: 99ft. (30m)
L2': 238ft. (72m)
Portion increased by
one size is overlapped
but only one size is
increased.
LF: 49ft.
(15m)
LH: 115ft. (35m)
LG: 180ft. (40m)
L2: 263ft. (80m)
Example 1
Example 2
1. Check the portion for one size increase.
ΔL
Total capacity of indoor units
Length for sizing up
L2 system
47,800 BTU/h (14kW)
39ft. (12m)
L2' system
95,600 BTU/h (28kW)
66ft. (20m)
L2 combined indoor units
Increase the discharge, suction and liquid tubes 39ft. (12m) by one size from the 1st distribution joint to be directed towards
LF: Increase 39ft. (12m) by one size among 49ft. (15m).
LG: No increase by one size
L2' combined indoor units
Increase the discharge, suction and liquid tubes 66ft. (20m) by one size from the 1st distribution joint to be directed towards
LF: Increase all 49ft. (15m) by one size
LH: Increase 16ft. (5m) by one size among 115ft. (35m).
2. Final result
Before sizing up
LF
ø1-1/8”
/
ø7/8”
/
ø1/2”
ø3/4”
/
ø5/8”
/
ø3/8”
ø1-1/8”
/
ø3/4”
/
ø1/2”
ø7/8”
/
ø3/4”
/
ø3/8”
ø1-3/8”
/
ø7/8”
/
ø5/8”
ø1-3/8”
/
ø7/8”
/
ø1/2”
ø7/8”
/
ø3/4”
/
ø3/8”
ø1-3/8”
/
ø1-1/8”
/
ø5/8”
ø1-1/8”
/
ø7/8”
/
ø1/2”
49ft. (15m)
LG
No size up
131ft. (40m)
LH
115ft. (35m)
49ft. (15m)
0 ft. (0m)
16ft. (5m)
* The LH is only 16ft. (5m) from the 2nd distribution joint.
* The size increased portion is overlapped at the LF but it has only one size increase.
L4: 33ft.
(10m)
L2: 197ft. (60m)
LF: 66ft. (20m)
1. Checking the portion for one size increase
Δ L
Total capacity of indoor units
Length for sizing up
L2 system
110,600 BTU/h (32.4kW)
66ft. (20m)
L2 combined indoor units
Increase the discharge, suction and liquid tubes 92ft. (28m) by one size from the 1st distribution joint to be directed towards
LF: Increase 66ft. (20m) by one size.
LG: Increase 26ft. (8m) by one size among 33ft. (10m).
2. Final result
Before sizing up
LF
66ft. (20m)
66ft. (20m)
LG
33ft. (10m)
26ft. (8m)
* The LG is only 26ft. (8m) from the 2nd distribution joint.LG
* It is possible to increase the LG to 33ft. (10m) by one size.
Outdoor
unit 1
Outdoor
unit 1
Outdoor
unit 2
Type 48
Type 15
Type 48
164ft. (50m)
139ft. (42m)
After sizing up
Tube length
Size up length
LG: 33ft. (10m)
164ft. (50m)
After sizing up
Tube length
Size up length
L2 indoor units.
L2' indoor units.
L2 indoor units.