Lennox MMA048S4 User Manual

79
When there is more than one indoor unit:
Outdoor Temperature (T4)
Cooling
>25°C 17°C - 25°C <17°C
>77°F 62.6°F - 77°F <62.6°F
Modify Rate 100% 80% 40%
NOTE: The nal result is integer.
In low ambient cooling mode, modify rate is xed as 40%.
According to the nal capacity request to conrm he operating frequency, as following table.
Frequency (Hz) 0
COOL_
F1
COOL_
F2
...
...
COOL_
15
COOL_
16
Amendatory capacity
demand
0 1 2
...
...
15 16
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
Figure 31. Heating Mode
19.4. Heating Mode
Plus all the indoor capacity request together, then multiply it by T4.
When there is only one indoor unit:
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 .5 0

Lennox MMA048S4 Specifications

General

Brand	Lennox
Model	MMA048S4
Category	Air Conditioner
Language	English