Panasonic U-72MF2U9 Technical Data Manual page 77

8. Optional Parts
8-4-6. Tubing system design limitation
8-4-6-1. Design limitations overview
Type
456
Connectable
656
Indoor capacity
856
4160
Distance from Indoor unit *
Installation place
Branch to several indoor unit
under 1 port
(Same mode operation)
Individual ON/OFF control
under 1 port
* If the distance between distribution joint and indoor unit (L) is
more than 98ft (30m), for the tube between distribution joint
and Multiple type solenoid valve kit (La), and for the tube
between Multiple type solenoid valve kit and indoor unit (Lb),
increase the tubing size by 1 rank.
Refer to the installation instruction of outdoor unit for the
tubing size.
NOTE
The following chart shows that the total capacity of combined indoor units connected from the Multiple type solenoid
valve kit includes the further indoor unit connected to the Single or Multiple type solenoid valve kit.
Type
Total allowable capacity (BTU/h)
(Total allowable capacity (kW))
Outdoor
Multiple type
solenoid valve kit
Indoor Indoor Indoor Indoor
1 2 3
Outdoor
Multiple type
solenoid valve kit
Indoor Indoor Indoor Indoor
1 2 3
ex)Total allowable capacity=total capacity of indoor 1-indoor N
Limitations
≤
19,100 BTU/h (5.6kW)
≤
54,600 BTU/h (16.0kW)
Within 98ft (30m) from Indoor unit
Corridor : Strongly recommended
Room : Avoid
Possible up to 2 indoor units
Possible
456
≤
85,300
≤
( 25.0)
Pinch sealing
Single type
solenoid valve kit
Indoor
4 N-1
solenoid valve kit
Indoor Indoor Indoor
4 5 6 N-1
Remarks
It is possible that 2 ports
is used in parallel.
See "8-4-6-5. 2 ports to
be used in parallel".
Distance between
distribution joint and I/U is
within 164ft (50m).
Need Initial setting
by PC software
Multiple type
solenoid valve kit
La
L ≤ 164ft (50m)
656 856
≤
≤
124,200 162,400
≤ ≤
( 36.4) ( 47.6)
Single type
solenoid valve kit
Indoor
N
Multiple type
Indoor
N
2 - 61
Design of 3WAY VRF SYSTEM
Indoor
Lb ≤ 98ft (30m)
4160
≤
238,800
≤
( 70.0)
1
2
3
4
5
6
7
8
9