Daikin RoofPak RPS Series Installation And Maintenance Manual page 40

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