Daikin Super Multi NX C-Series, Руководство по обслуживанию, Страница: 106 / 298

SiE12-411 Control Specification
Function and Control 95
3.10 Defrost Control
Outline Heat Pump Only
Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor
heat exchanger temperature must be more than its fixed value when finishing.
Detail Conditions for Starting Defrost
The starting conditions must be made with the outdoor air temperature and heat exchanger
temperature. Under the conditions that the system is in heating operation, 6 minutes after the
compressor is started and more than 47 minutes of accumulated time pass since the start of the
operation or ending the defrosting.
Conditions for Canceling Defrost
The judgment must be made with heat exchanger temperature. (4°C~12°C)
3.11 Low Hz High Pressure Limit
Outline
Heat Pump Only
Set the upper limit of high pressure in a low Hz zone. Set the upper limit of the indoor heat
exchanger temperature by its operating frequency of Hz. Separate into three zones, reset zone,
unchanged zone and drooping zone and the frequency control must be carried out in such
zones.
Detail Separate into Zones
Note: Drooping: The system stops 2 minutes after staying in the drooping zone.
Defro s ting
s ign a l
Prep a r a tion
s ign a l
Compre ss or
4 3 min u te s
2YC 3 2 : 94Hz
2YC45 : 54Hz
2YC 3 2 : 94Hz
2YC45 : 52Hz
6 min u te s
0Hz
60 s econd s
120 s econd s
650 s econd s
3 0 s econd s 7 min u te s
Pl control
Completion
0 s econd s
S t a rt
1
0
1
0
ON
OFF
ON
OFF
ON
OFF
ON
OFF
5 s econd s
450pp s Initi a l opening
Initi a l opening
5 s econd s
4-w a y v a lve
S olenoid
v a lve
Oper a ting room
Motorized v a lve
opening
Oper a tion
s topped room
Motorized
v
a lve opening
F a n
450pp s 450pp s
140pp s
60°C
Re s et zone
Drooping zone
Unch a nged
zone
Highe s t he a t
exch a nger
temper a t u re
a mong the
oper a ting room s
59°C
56°C