6.4 Control and Functions
6.4.1 Capacity Request Calculation
Total capacity Request=Σ(Norm code × HP) /10 +
correction
Cooling mode:
T1 Ts
3
1
1
e
c
a
4
2
0
2
3
0
1
f
d
b
Capacity area a b c d e f
Norm code (N) 3 2 1.5 1 0.5 0
Model 9K 12K 18K 24K
HP 1.0 1.2 1.5 2.5
Note: The final result is integer.
According to the final capacity request to
confirm the operating frequency, as per the
following table.
Frequency (Hz)
0
COO
L_F1
COO
L_F2
…
…
COOL
_F24
COO
L_F2
5
Amended
capacity
demand.
0 1 2
…
…
24 25
Meanwhile the maximum running frequency will be
adjusted according to the outdoor ambient temp.
43
41
38
T4LimFre1_ADD
No limit
T4LimFre2_ADD
T4LimFre3_ADD
42
39
37
49
46
T4LimFre4_ADD
T4LimFre5_ADD
48
45
Heating mode
T1 Ts
4
0
a
3
1
-1
3
1
2
0
b
c
d
e
f
2
Capacity area a b c d e f
Norm code (N) 3 2 1.5 1 0.5 0
Model 9K 12K 18K 24K
HP 1.0 1.2 1.5 2.5
Note: The final result is an integer.
Then modify it according to T2 average
(correction):
Note: Average value of T2:(Sum T2 value of all
indoor units) / (number of indoor units)
℃
T2 average
Decrease frequency
47
Keep frequency
40 Increase frequency
According to the final capacity request to
confirm the operating frequency, as per the
following table.
Frequency (Hz)
0
HEAT
_F1
HEAT
_F2
…
HEAT
_F24
HEAT
_F25
Amendatory
capacity
demand.
0 1 2 … 24 25