77
Capacity control is within the range shown above. If demand capacity of the indoor units exceeds the maximum capacity
of the outdoor unit, the demand capacity will be proportionally distributed.
2)
Outdoor unit frequency control (30 ~ 104Hz)
The decision frequency is based on the total indoor demand frequency as follows:
(6)
Cooling operation
(a)
Summary
1)
Capacity control
Model
Capacity
SCM80ZA
1.8 ~ 8.6 kW
30 Hz or less
More than 30 Hz, but 104 Hz or less
More than 104 Hz
Decision frequency
30 Hz
30 to 104 Hz
104 Hz
Indoor demand frequency total
Note (1) The total indoor demand frequency is based on the value for each of the units shown in item (b).
(b) Mode switching
Within the selected mode, the unit operates using the values shown below which were obtained by multiplying a conversion
coefficient to the indoor unit demand frequency.
Model (Indoor)
Operation Mode
Automatic
High
Medium
Low
Hi power
Econo
30
30
30
30
30
30
30
30
30
30
30
30
30 ~ 36
30 ~ 36
30
30
34
30
30 ~ 38
30 ~ 38
30
30
38
30
30 ~ 44 (30 ~ 42)
30 ~ 48 (30 ~ 42)
30 ~ 40 (30)
30
44
30
22
25
28
32
30 ~ 54
30 ~ 54
30 ~ 36
30
54
30
50
40
Note (1) The values in parenthesis ( ) indicate SRRM40HENG-L.
(c)
Operation of Major Functional Components in Cooling Mode
Functional
components
Operation
Demand frequency
Indoor
unit fan
Compressor
Outdoor unit fan
Electronic
expansion valve
(EEVA, B, C, D)
See preceding table
ON
According to demand frequency
According to decision frequency
According to decision
frequency
0
(All indoor units)
OFF
According to stop mode
According to mode switching
OFF
0
(Thermostat off units)
ON
All closed
(Thermostat off units)
According to decision frequency
According to mode switching
OFF
All closed
(Stop, abnormal stop units)
0
(Stop, abnormal stop units)
0
(All units)
ON
First speed or low
OFF
OFF
OFF
According to stop mode
Cooling
Thermostat OFF
(All indoor units)
Thermostat OFF
(Some of indoor units)
Stop, abnormal stop
(Some of indoor units)
Failure
(Outdoor Unit)
Fixed
Automatic
(b)
SRRM model
When the timer is set to "ON" at the operation changeover is in the cooling or the heating mode, and in the cooling or the
heating mode at automatic operation, the pleasant reservation timer is actuated to start by the room temperature thermistor
(Th1) at 5 to 80 minutes before the set time irrespective of the time set by the timer.
Notes (1) At 5 minutes before the timer ON time, operation starts regardless of the temperature of the room temperature thermistor (Th1).
(2) This function does not actuate when the operation select switch is set at the dehumidifying as well as the dehumidifying in the auto mode.
However, the operation of item (1) above is performed during the dehumidifying in the auto mode.
(3) During the pleasant reservation operation, both the operation lamp and timer lamp illuminate and the timer lamp goes off after expiration of the timer, ON setting
time.
Operation mode
Heating
Coolng
Operating start time (amount of time
previous to set that operation begins)
80 mins.
30 mins.
15 mins.
5 mins.
80 mins.
30 mins.
15 mins.
5 mins.
Room. temp thermistor (Th1)
Under 5˚C
Under 10˚C
Under 15˚C
Over 15˚C
Over 40˚C
Over 35˚C
Over 30˚C
Under 30˚C
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