IM 926-3 • ROOFPAK APPLIED SYSTEMS 40 www.DaikinApplied.com
Mechanical Installation
Table 14: Approximate R-407C Refrigerant Charge Per Circuit, 045C - 105C
Unit size
Base charge lbs . per circuit (less DX coil)
DX coil charge lbs per circuit per coil row
Condenser
pumpdown
capacity** (lbs)
RPS
RDT
DX=S*
DX=L*
Circuit #1
Circuit #2
Circuit #1
Circuit #2
045C
31
30
31
26
2.3
—
103
050C
31
30
32
31
2.3
2.8
103
060C
32
31
32
31
2.3
2.8
103
070C
36
36
37
37
2.3
2.8
127
075C
36
36
37
37
2.3
2.8
127
080C
37
37
34
35
3.8
4.3
134
090C
42
43
41
43
3.8
4.3
152
105C
46
42
41
44
4.5
6.0
198
* DX coil configuration (S = Standard, L = Large) is identified by the eighth digit of the RPS/RDT or RFS model number, found on the unit nameplate.
For example, DX = L for unit model number RFSO6OCLY.
** Condenser pumpdown capacity is the total charge for both circuits and is based on volume between condenser entrance and liquid line solenoid at 90ºF, 90% full
Table 15: Weight of Refrigerant in Copper Lines (Pounds Per 100 Feet of Type L Tubing)
O .D . line size Vol . per 100 ft
in cubic feet
Weight of refrigerant, lbs ./100 feet
Liquid @100°F
Hot gas@120°F cond .
Suction gas (superheat to 85°F)
R-22
R-407C
R-22
R-407C
30°F
40°F
R-22
R-407C
R-22
R-407C
3/8ʺ
0.054
3.84
3.64
0.20
0.46
0.052
0.047
0.077
0.071
1/2ʺ
0.100
7.12
6.74
0.37
0.85
0.096
0.088
0.143
0.132
5/8ʺ
0.162
11.53
10.92
0.61
1.38
0.156
0.142
0.232
0.214
7/8ʺ
0.336
23.92
22.65
1.26
2.87
0.324
0.294
0.480
0.444
1-1/8ʺ
0.573
40.80
38.62
2.14
4.89
0.552
0.501
0.819
0.756
1-3/8ʺ
0.872
62.09
58.77
3.26
7.44
0.840
0.763
1.247
1.151
1-5/8ʺ
1.237
88.07
83.37
4.63
10.55
1.191
1.082
1.769
1.633
2-1/8
2.147
152.87
144.71
8.03
18.31
2.068
1.879
3.070
2.834
2-5/8ʺ
3.312
235.81
223.23
12.38
28.25
3.189
2.898
4.736
4.372
3-1/8ʺ
4.728
336.63
318.67
17.68
40.33
4.553
4.137
6.761
6.241
3-5/8ʺ
6.398
455.54
431.23
23.92
54.57
6.161
5.598
9.149
8.445
4-1/8ʺ
8.313
591.89
560.30
31.08
70.91
8.005
7.274
11.888
10.973
Table 16: Pressure-Vacuum Equivalents
Absolute pressure above zero
Vacuum below 1 atmosphere
Approximate fraction of
1 atmosphere
H
2
O boiling point at
each pressure (°F)
Microns
PSIA
Mercury (mm)
Mercury (in)
0
0
760.00
29.921
—
—
50
0.001
759.95
29,920
1/15,200
-50
100
0.002
759.90
29.920
1/7,600
-40
150
0.003
759.85
29.920
1/5,100
-33
200
0.004
759.80
29.910
1/3,800
-28
300
0.006
759.70
29.910
1/2,500
-21
500
0.009
759.50
29.900
1/1,520
-12
1,000
0.019
759.00
29.880
1/760
1
2000
0.039
758.00
29.840
1/380
15
4,000
0.078
756.00
29.760
1/189
29
6000
0.117
754.00
29.690
1/127
39
8,000
0.156
752.00
29.600
1/95
46
10,000
0.193
750.00
29.530
1/76
52
15,000
0.290
745.00
29.330
1/50
63
20,000
0.387
740.00
29.130
1/38
72
30,000
0.580
730.00
28.740
1/25
84
50,000
0.967
710.00
27.950
1/15
101
100,000
1.930
660.00
25.980
2/15
125
200,000
3.870
560.00
22.050
1/4
152
500,000
9.670
260.00
10.240
2/3
192
760,000
14.697
0
0
1 atmosphere
212
Summary of Contents for RoofPak RCS Series
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