Airwell DLF 18 DCI, Technical Manual

Page: 43 / 102

12-1 =
CONTROL SYSTEM
SM DL
F 1
-A.1 GB
12.4.4 Heating Mode
12.4.4.1 Heating - General
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Temp: Selected desired temperature
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Timer: Any
I-FEEL: ON or OFF
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RCT (R/C sensor) in I-FEEL mode.
c. Indoor Coil Temp is detected by ICT.
12.4.4.2 Control Functions
a. COMP Operation
In general – the operation is set by the NLOAD calculation in indoor unit side.
Other rules are according to section 12.5.1 .
b. OFAN Operation
In normal operation OFAN operates together with the COMP.
Other rules are according to section 12.5.3 .
c. IFAN operation:-
IFAN will operates according heat mode rules. See section 12.4.2.3.
d. RV is ON during HEAT mode.
e. HEATERS – See section 12.4.9.
f. PUMP is OFF during heat mode.
12.4.4.3 Sequence Diagram
Maintains room temp. at desired level by comparing RAT or RCT to SPT.
0
+1
+2
+3
-3
-2
-1
(RT - SPT) [
q
C]
COMP
OFAN
IFAN
RV
ON
OFF
ON
OFF
OFF
ON
OFF
User Fan Speed
COMP Speed
decrease
COMP Speed
increase
OFAN Speed
decrease
OFAN Speed
increase
See IFAN Rules