Airwell Multi Split DUO 50 DCI, Service Manual

Page: 60 / 151

13-5
CONTROL SYSTEM
SM DLF 1-A.1 GB
Change To Higher
OFAN Cool state (*1)
45
50
HST
Change To lower
OFAN Cool state
(*1)
If State C, change to B
If State B, change to A
2$7
$
%
&
3 Degrees
3 Degrees
OFAN State
at Cool Mode
Note: Periorities A>B>C
When compressor is switched to OFF and the heat sink temperature is above 55 degrees, the
outdoor fan will remain ON in low speed for up to 3 minutes.
13.1.8.2 Outdoor Fan Control for DCI72Z
OFAN operates between OFMinRPM to OFMaxRPM .
Min time for speed change of OFAN OFMinTimeReduce (60 seconds).
There are 4 defined speeds – High, Med, Low, and Very Low.
The actual OFAN speeds in cool mode are defined according to the following table:
Freq
Outdoor air temperature (OAT)
-10 -5 0 5 10 15 20 25 30 35 40 46
0
0 0 0 0 0 0 0 0 0 0 0 0
15 80 100 120 130 220 340 460 580 600 730 730 730
25 130 140 160 190 250 380 600 610 670 730 740 750
35 160 180 210 250 330 470 730 730 730 730 780 800
45 205 230 260 320 440 600 730 730 730 730 800 850
55 250 280 310 390 550 730 730 730 730 730 800 850
65 275 315 355 470 640 730 730 730 730 730 800 850
75 300 350 400 550 730 730 730 730 730 730 800 850
85 325 395 445 630 730 730 730 730 730 730 800 850
95 350 440 490 710 730 730 730 730 730 730 800 850
The actual OFAN speeds in heat mode are defined according to the following table
Freq
Outdoor air temperature (OAT)
-15 -7 0 7 14 21 24
0
0 0 0 0 0 0 0
15 850 850 750 750 500 350 300
25 850 850 750 750 520 370 320
35 850 850 750 750 540 390 340
45 850 850 750 750 560 410 360
55 850 850 750 750 580 430 380
65 850 850 750 750 600 450 400
75 850 850 750 750 620 470 420
85 850 850 750 750 640 490 440
95 850 850 750 750 650 500 450
The fan speed is also related to protections and OMT value.