Defrost Operation - Daikin R32 Sky-Air RZAG-M Service Manual

ESIE17-08 | Part 5. Appendix
Indoor Temp. (°C-WB)
Outdoor
Temp. 11 14
(°C-DB)
Capacity (% of standard point)
5 0.62 0.81
10 0.62 0.81
15 0.62 0.81
20 0.62 0.81
25 0.62 0.81
30 0.61 0.81
35 0.61 0.81
40 0.61 0.81
When "low humidity application + freeze up operation prevention" is selected. Field setting 16(26)-2-04:
Indoor Temp. (°C-WB)
Outdoor
Temp. 11 14
(°C-DB)
Capacity (% of standard point)
-15 0.51 0.68
-10 0.51 0.68
-5 0.51 0.68
0 0.51 0.68
5 0.51 0.68
10 0.51 0.68
15 0.51 0.68
20 0.51 0.68
25 0.51 0.68
30 0.51 0.68
35 0.51 0.68
40 0.51 0.67
I
NFORMATION
• Operation range on indoor side expanded from minimum 12°CWB to 11°CWB when using LH setting.
• Do not use a setpoint below 20°C to avoid operation out of the indoor operation range (11°CWB).
• Be sure to set the indoor fan to high speed.

5.2.3.4. Defrost Operation

When in heating mode, a defrost operation will be conducted in order to avoid ice formation on the outdoor unit heat exchanger.
Starting conditions
Defrost will start when the following conditions have been realized:
& • Integrated compressor running time is 25 minutes or more since the completion of the previous defrost operation.
OR • Defrost upper limit time A is met.
• Outdoor unit heat exchanger temperature is within the defrost request area.
Defrost conditions
Defrost upper limit A
Depending on the defrost start setting (field setting mode of the indoor unit remote controller), frost upper limit time A becomes as shown in the table below.
Outdoor air temperature > -5°C
Outdoor air temperature ≤ -5°C
15/11/18 | Version 1.1
16 18 19
0.91 1.01 1.06
0.91 1.01 1.06
0.91 1.01 1.12
0.91 1.07 1.10
0.91 1.05 1.07
0.91 1.01 1.04
0.94 0.98 1.00
0.90 0.94 0.96
16 18 19
0.78 0.95 1.01
0.78 0.95 1.01
0.78 0.95 1.01
0.78 0.95 1.01
0.78 0.95 1.01
0.78 0.95 1.01
0.78 0.95 1.01
0.78 0.95 1.01
0.78 0.95 1.00
0.78 0.95 1.00
0.78 0.95 1.00
0.78 0.94 0.96
Outdoor unit heat exchanger temperature (°C)
5
2
0
-20 -15 -10 -5
5
-3 -1
-7
-4
-4
-5
-5
-6
-6
-8
-7
-8
-10
-9
-10
-11
-11
-7
-12
-13
-14
Defrost permit -15
-16
Defrost request
area -17
area
-20
-19
-21
-23
-25
-24
-27
-28
-30
When quick defrost starting is set Factory setting
40 minutes 2 hours
40 minutes 6 hours
R32 Sky-Air RZAG-M
20 22 24
1.16 1.21 1.26
1.16 1.21 1.26
1.14 1.19 1.24
1.12 1.16 1.21
1.09 1.13 1.18
1.06 1.10 1.14
1.02 1.06 1.11
0.98 1.02 1.06
20 22 24
1.06 1.16 1.26
1.06 1.16 1.26
1.06 1.16 1.26
1.06 1.16 1.26
1.06 1.16 1.26
1.06 1.16 1.26
1.06 1.16 1.24
1.06 1.16 1.21
1.06 1.13 1.18
1.05 1.10 1.14
1.02 1.06 1.11
0.98 1.02 1.06
When slightly quick defrost starting is set (Permit)
10
15 Outdoor temperature (°C)
Factory setting (permit)
-1
When slightly quick defrost starting is set (Request)
-2
When slightly slow defrost starting is set (Permit)
Factory setting (Request)
-8
When slightly slow defrost starting is set (Request)
When slow defrost starting is set
6 hours
8 hours
5.2. Detailed information setting mode
Page 117