Data Aire DAPA-2.5 - Charging Procedures and Component Tests; 5.7 Component Functional Test; 5.8 Charging Procedures

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Table 12 Liquid Line Multiplier for R-410A at Various Line Lengths
Liquid Line
Nominal Size
(inches)
Liquid Line
Size OD
(inches)
Multiplier
Equivalent Feet (Meters)
50
100
150
200
(15.2)
(30.5)
(45.7)
(61.0)
3/8
1/2
0.067
3.35
6.71
10.06
13.41
1/2
5/8
0.108
5.38
10.76
16.13
21.51
5/8
3/4
0.154
7.70
15.40
23.10
30.80
3/4
7/8
0.239
11.95
23.90
35.85
47.80
1
1 1/8
0.380
19.02
38.04
57.06
76.08
Table 13 Liquid Line Multiplier for R-407C at Various Line Lengths
Liquid Line
Nominal Size
(inches)
Liquid Line
Size OD
(inches)
Multiplier
Equivalent Feet (Meters)
50
100
150
200
(15.2)
(30.5)
(45.7)
(61.0)
3/8
1/2
0.072
3.58
7.17
10.75
14.33
1/2
5/8
0.115
5.75
11.49
17.24
22.99
5/8
3/4
0.165
8.23
16.46
24.69
32.92
3/4
7/8
0.255
12.77
25.54
38.31
51.08
1
1 1/8
0.407
20.33
40.65
60.98
81.31
Component Functional Test
Critical components can be functionally verified by using the manual mode of the Mini-dap4. See Mini-
dap4 User Manual for details regarding how to use Menu I – Manual Control (Service Level).
Charging Procedures
WARNING: If the system is charged from a vacuum, the preheating of the
compressor is not necessary. But if starting a compressor that has not
been charged from a vacuum, the crankcase heater must be energized
for a minimum of 12 hours to reduce the possibility of liquid slugging on
startup. Failure to energize the crankcase heater could result in
compressor damage.
NOTICE Prior to refrigerant charging, the proper tools and/or equipment must
be available, and the system vacuum and moisture removal procedure must
have been carried out. Refer to Section 5.2 Charging/Installation Work
Procedures and 5.3 Triple Evacuation and Dehydration Procedure prior to
charging the system.