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Design of Mini Multiset
2. System Design
Ball Valve Installation (for refrigerant R410A only)
Check the size of the ball valve set you separately purchased.
1. Installing the ball valve
(1) If the ball valve is to be installed for indoor unit
extension, or near an indoor unit, install it so that
the service port faces the indoor unit side.
(This facilitates indoor unit leak testing and vacu-
um procedures.)
Install the ball valve as close as possible to the
distribution joint.
CAUTION
This ball valve is for use
only in systems that utilize
refrigerant R410A. The ser-
vice port connection size is
ø7.94. The face-to-face dis-
tance between the ø12.7 or
ø15.88 flare nuts is 26 mm
or 29 mm, respectively.
Be sure to use only the
supplied flare nuts. Be
careful to use the correct
tools and materials.
2. Flare nut tightening
The flare nut on the service port side is fully tight-
ened. Recommended tightening torque is
(8~10 N·m).
If the valve is used for extension, it can be used
as-is. In all other cases, use 2 monkey wrenches
in combination to loosen the flare nut.
Outdoor unit
Indoor
Indoor unit
Service
port
Ball valve
Outdoor
Indoor unit extension
Model name
Size
BV-RXP56AG
ø6.35 • ø12.7
BV-RXP160AG
ø9.52 • ø15.88
Fully tightened (this side only)
Plug
(this side only)
Service port
Tightening torque (8~10 N
•
m)
Valve cap
Tightening torque (19~21 N
•
m)
A
E
D
C
Service port
30˚
Insulator
(divided in 2)
ø6.35 (1/4")
ø9.52 (3/8")
ø12.7 (1/2")
ø15.88 (5/8")
A
B
C
D
E
72
76
89
108
42
42
42
51
54
54
58
68
16
16
20
22
44
44
51
56
Type with flare nut at each end
Dimensions
Size
Figure
Dimensions
Unit: mm
Note: Install the service port so that it faces the extension side.
