Mitsubishi Heavy Industries SRRM40HENG-L, Handbook, Page: 197 / 1106

195
SCM-HG (2 room)
(7) Heating Operation
(a) Summary
1) Capacity control
Model
Capacity
SCM452HENG-L
2.2 ~ 6.0 kW
28 rps or less
More than 28 rps, but 134 rps or less
More than 140 rps
Decision speed
28 rps
28 to 134 rps
134 rps
Indoor unit instruction total speed value
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 speed control (28 ~ 134 rps)
Note (1) The indoor unit instruction total speed value is the total of the values from each unit in item (b).
(c) Operation of Major Functional Components in Cooling Mode
Functional
components
Operation
Instruction speed
Indoor
unit fan
Compressor
Outdoor unit fan
Electronic
expansion valve
See preceding table
ON
According to instruction speed
According to outdoor unit speed
According to decision
speed
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 outdoor unit speed
According to mode switching
All closed
(Fan, stop, abnormal stop units)
0
(Fan, stop, abnormal stop units)
0
(All units)
ON
First speed or low
OFF
OFF
According to stop mode
Cooling
Thermostat OFF
(All indoor units) Thermostat OFF
(Some of indoor units)
Fan, stop, abnormal stop
(Some of indoor units)
Failure
(Outdoor Unit)
Fixed
Automatic
(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 instruction speed.
(c) Operation of Major Functional Components in Heating Mode
Model (Indoor)
Operation Mode
Automatic
High
Medium
Low
Hi power
Econo
28 ~ 74
28 ~ 74
28 ~ 50
28 ~ 34
76
28 ~ 42
28 ~ 80
28 ~ 80
28 ~ 58
28 ~ 36
82
28 ~ 44
28 ~ 120
28 ~ 120
28 ~ 86
28 ~ 46
120
28 ~ 60
28 ~ 126
28 ~ 126
28 ~ 92
28 ~ 46
120
28 ~ 54
28 ~ 134
28 ~ 134
28 ~ 126
28 ~ 54
126
28 ~ 64
22 25 28 32 40
(rps)
Functional
components
Operation
Instruction speed
Indoor
unit fan
Compressor
Outdoor unit fan
Electronic
expansion valve
See preceding table
ON
According to mode switching
According to instruction speed
According to outdoor unit speed
According to decision
speed
0
(All indoor units)
OFF
According to stop mode
Hot Keep
Hot Keep
OFF
0
(Thermostat off units)
ON
After 4 minutes all closed: 58 pulse
(Thermostat off units)
According to mode switching
According to instruction speed
According to outdoor unit speed
58 Pulse
(Fan, stop, abnormal stop units)
0
(Fan, stop, abnormal stop units)
0
(All units)
ON OFF
Hot Keep
Hot Keep
OFF
According to stop mode
Heating
Thermostat OFF
(All indoor units) Thermostat OFF
(Some of indoor units)
Fan, stop, abnormal stop
(Some of indoor units)
Failure
(Outdoor Unit)
Fixed
Automatic