Panasonic S-12MT2U6 - Page 12

Outline of 3WAY VRF SYSTEM
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1. Line-up
Outline of 3WAY VRF SYSTEM
1. Line-up
Type
Type
120
Capacity: BTU/h (kW)
120,000 (35.2)
Cooling / Heating / 135,000 (39.6)
Outdoor Unit
Capacity: BTU/h (kW)
Cooling / Heating
Outdoor Unit
U-144MF2U9
U-120MF2U9
unit : in.(mm)
unit : in.(mm)
144,000 (42.2)
144
/ 162,000 (47.5)
*2. The tubing is routed out from the front.
*1. The tubing is routed out from the bottom.
B:28-47/64(730)
*1
C:28-47/64(730)
39-3/8(1,000)
46-29/64(1,180)
72-33/64(1,842)
45-9/32(1,150)
A:37-61/64(964)*2
(Installation hole pitch)
(Installation hole pitch)
(Installation hole pitch)
(Installation hole pitch)
Top view
*2. The tubing is routed out from the front.
*1. The tubing is routed out from the bottom.
B:28-47/64(730)
*1
C:28-47/64(730)
39-3/8(1,000)
46-29/64(1,180)
72-33/64(1,842)
45-9/32(1,150)
A:37-61/64(964)*2
(Installation hole pitch)
(Installation hole pitch)
(Installation hole pitch)
(Installation hole pitch)
Top view
Outline of 3WAY VRF SYSTEM
2. Features of 3WAY VRF SYSTEM
CONNECTION
If indoor/outdoor units need servicing, a ball
valve (field supply) cuts off non-operational
units to let other units stay running.
Since all pipings are
concentrated into
one pipe shaft, you
can minimize piping
space and construc-
tion labor.
Max. No. allowable connected outdoor units
Max. capacity allowable connected outdoor units
Max. connectable indoor units
Max. allowable indoor/outdoor capacity ratio
Maximum actual piping length
Maximum level difference (when outdoor unit is lower)
Maximum total piping length
3
50~150%
656 ft
164(131) ft
1
,640 ft
System limitations
Combination of outdoor units
R407C models and R22 models must not be used in combination with each other.
*If the additional installment of outdoor and indoor units are expected,
the size of refrigerant piping should be decided according to the total capacity
after the addition.
The DC inverter unit can be used independently or in combination.
* The capacity after the setting
must not exceed 30-Ton.
2-1. Outline of 3WAY VRF SYSTEM
System example
Type (Ton)
Total tonnage
6
8
10
12
111
1
1
1 11
1
2223
1
1
1
1
12
6810 12 14 16 18 20 22 24 26 28 30
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ADDITION
CONCENTRATION
Solenoid
valve kit
*1
Indoor unit
*1 The connection between the indoor unit(s) and the solenoid valve kit(s) has
three (3) types of methods. For further details, see the section 2.
3-4. "Connecting Multiple Indoor Units to a Single Solenoid Valve Kit".
If your indoor capacity load
changes in the future, it’s easy to
add on both indoor and outdoor
units using the same pipings.
52 *
3
Maximum number of connectable indoor units when connected with minimum capacity
To tal system
tonnage
Number of
indoor units
To tal system
tonnage
Number of
indoor units
6141433
8191638
10 24 18 43
12 28 20 48
22~30 52
*
2
*3 In the case of 20-Ton (type 240) or smaller units, the number is limited by
the total capacity of the connected indoor units.
*2 Up to 3 units can be connected if the system has been extended.
360,000 BTU/h
(30-Ton, 105.5 kW)
TD831183-00_北米向け3WAY.indb 4 15/12/07 13:31:38