Refrigerant Properties (R-410A) - Daikin VRV IV-S RXTQ-TAVJU Series Service Manual

SiUS331604E
(5) Precautions for operating in servicing mode (field setting):
When a test operation is interrupted or after exiting service mode, please wait for at least one minute before entering
service mode again. In case of continuous execution, the outdoor unit PCB may sometimes display an error code. If any
error codes are displayed, press the RETURN button (BS3). If performing the above operation still does not eliminate
the error, reconnect the unit to the power supply.
1.3

Refrigerant Properties (R-410A)

psi MPa
580 4.0
551 3.8
3.6
522
3.4
493
464 3.2
435 3.0
406 2.8
377 2.6
348 2.4
319 2.2
290 2.0
261 1.8
232 1.6
203 1.4
1.2
174
1.0
145
0.8
116
87 0.6
58 0.4
29 0.2
0 0.0
Absolute
Temperature
Pressure
°C °F MPa
–50 –58 0.11 16.0
–48 –54.4 0.12 17.4
–46 –50.8 0.13 18.9
–44 –47.2 0.15 21.8
–42 –43.6 0.16 23.2
–40 –40 0.18 26.1
–38 –36.4 0.19 27.6
–36 –32.8 0.21 30.5
–34 –29.2 0.23 33.4
–32 –25.6 0.25 36.3
–30 –22 0.27 39.2
–28 –18.4 0.29 42.1
–26 –14.8 0.32 46.4
–24 –11.2 0.34 49.3
–22 –7.6 0.37 53.7
Service Diagnosis
–50 –40 –30 –20 –10
–58 –40 –22 –4 14
Absolute
Temperature
Pressure
psi °C °F MPa
–20 –4 0.40
–18 –0.4 0.43
–16 3.2 0.46
–14 6.8 0.50
–12 10.4 0.54
–10 14 0.57
–8 17.6 0.61
–6 21.2 0.66
–4 24.8 0.70
–2 28.4 0.75
0 32 0.80
2 35.6 0.85
4 39.2 0.91
6 42.8 0.96
8 46.4 1.02
0 10 20 30
32 50 68 86 104
Temperature
Temperature
psi °C °F MPa
58.0 10 50.0 1.09
62.4 12 53.6 1.15
66.7 14 57.2 1.22
72.5 16 60.8 1.29
78.3 18 64.4 1.37
82.7 20 68.0 1.45
88.5 22 71.6 1.53
95.7 24 75.2 1.61
102 26 78.8 1.70
109 28 82.4 1.79
116 30 86.0 1.89
123 32 89.6 1.99
132 34 93.2 2.09
139 36 96.8 2.20
148 38 100.4 2.31
Servicing Items to be Confirmed
MPa G psi G
3.9 566
3.7 537
3.5 508
3.3 479
3.1 450
2.9 421
2.7 392
2.5 363
2.3 334
2.1 305
1.9 276
1.7 247
1.5 218
1.3 189
1.1 160
0.9 131
0.7 102
0.5 73
0.3 44
0.1 15
–0.1 –15
40 50 60 ˚C
122 140 ˚F
Absolute
Temperature
Pressure
psi °C °F
158 40 104.0
167 42 107.6
177 44 111.2
187 46 114.8
199 48 118.4
210 50 122.0
222 52 125.6
234 54 129.2
247 56 132.8
260 58 136.4
274 60 140.0
289 62 143.6
303 64 147.2
319
335
Absolute
Pressure
MPa psi
2.42 351
2.54 368
2.67 387
2.80 406
2.93 425
3.07 445
3.21 466
3.36 487
3.51 509
3.64 528
3.83 555
4.00 580
4.17 605
120