Appendix SiUS39-506
116 General Information
7.5 How to calculate the additional refrigerant to be charged
Additional refrigerant to be charged R (lb.)
R should be rounded off in units of 0.1lb. .
Note: If a negative result is gotten for R from the formula at right, no refrigerant needs to be added.
*Example for refrigerant branch using REFNET joint and REFNET header for REYQ192M
Note: The amount of refrigerant to be added to the unit should be written on the included "Added
Refrigerant" plate and attached to the rear side of the front cover. Refer next page.
*Example for refrigerant branch using refnet joint and refnet header (REYQ192M)
φ
φ
φ
φ
φ
φ
Outdoor unit
H3
BS unit
( ~ )
A
REFNET joint
(
.
)
A B
B5
B1 B5
Indoor unit
( ~ )
1 8
Cool/Heat selection
possible ( ~ ,
.
)
1 4 7 8
Cooling only
(
.
)
56
d
c
1
B1
H2
H1
a
m
b
f
e
2
B2
h
g
3
B3
j
i
4
B4
k
5
l
o
n
p
6 7
8
B
REFNET header
φ
φ
φ
φ
φ
φ
φ
φ
φ
φ
φ
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