W12=
W11=
1.1
5.8 Additional Refrigerant Charge
It i
s necessary to add additional
refrigerant charge
as follows.
1. Calculating Method of Additional Refrigerant Charge
A.
Determine an
to
additional refrigerant quantity according to the following procedure, and charge it into the
system.
B.
Record the additional refrigerant quantity to facilitate service activities thereafter.
Although refrigerant has been charged into this unit, it is required that additional refrigerant be charged according
to piping length.
See Example for Model
CHV6-60URBM
, and fill in the following table.
Pipe Diameter in (mm)
Total Piping Length ft (m)
Additional Charge (lbs)
Total Piping Length
16 ft
Total Piping Length
Additional
Ref.Charge
<EXAMPLE>
W11=
CHV6-60URBM
17
a
b
Ref.Charge
W
0
W
1
W
2
a
b
100%~130% 130%~150%
CHV6-36URBM
8.4
0.02
6
0.013
17.4
CHV6-48URBM
8.4
0.02
6
0.013
17.4
CHV6-60URBM
9.0
0.02
6
0.013
17.4
0.33lbs for
each 10%
ķ
1.32lbs for
each 10%
ķ
W0+W1+W2
NOTE:
ķ
Less than 10% is calculate
d
as 10%.
Model
W0:
Ref.Charge
before
shipment
(lbs)
W1:
Additional
Ref.Charge according
to piping
(lbs/ft )
W2:
Additional Ref.Charge
according to
Connection Ratio
(lbs)
Wt
˖
Total Ref.
Charge
(lbs)
Max. Total
Ref.
Charge
(lbs)
Additional Refrigerant Charge
according to Table 5.
9
Tab e 5.9 Additional Refrigerant Charge Calculation
W2
=
0
W2
=
Pipe Diameter (in )
Total Piping Length (ft )
Additional
Charge
W1
2
=
Additional Refrigerant Charge Calculation
lbs
lbs
lbs
lbs
1/4
3/8
3.3
1/4
3/8
32.8
16.4
16.4
16.4
32.8
32.8
16.4
0.02
6
2.2
0.0134
3/8×32.8ft
3/8×16.4ft
3/8×16.4ft
1/4×16.4ft
3/8×16.4ft
1/4×32.8ft
1/4×32.8ft
lbs
lbs
Содержание CHV6-36URBM
Страница 16: ...5 3 Branch Pipe for Line Branch Unit in Inner Diameter Table 5 7 Shape Branch Pipe B 10 H 11 Branch Pipe...
Страница 31: ...26 Table 8 1 Checking of Wire Connection by Test Run...
Страница 32: ...SPWT J01 27 7...
Страница 34: ...able 8 3 Alarm Code T 29...
