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Note 1: Criteria for the difference between suction and discharge temperatures
(1) Cooling operation
After operating for a minimum of 30 minutes in "COOL" mode, if the ΔT dry bulb temperature difference between
suction and discharge air of the indoor unit is 8 °C or more, it is normal.
(2) Heating operation
After operating for a minimum of 30 minutes in "HEAT" mode, if the ΔT dry bulb temperature difference between
suction and discharge air of the indoor unit is 15 °C or more, it is normal.
* If demand from the indoor unit on the outdoor unit is low because the difference between the temperature
set by the remote controller and the temperature of the room is small, then the ΔT temperature difference
is small.
* Consider that ΔT temperature difference may diminish in cases of a system in which the connected indoor unit
capacity exceeds the outdoor unit capacity, the pipe length is long, or a large difference exists among
outdoor units.
Note 2: Criteria for operating power current
The table below shows the maximum current for each outdoor unit. Under standard conditions, operating current
is about 80 % of the value shown in the table below.
Outdoor unit
MCY-MUG
Current value
(A)
Note 3: Criteria for cycle status
(1) These data are based on operating a 4-way Air Cassette type air conditioner of 100 % connection with
standard piping length.
Data may vary depending on temperature conditions, installed pipe length, and room shape combinations, or
indoor unit connection capacity.
For pressure criteria in different temperature conditions, refer to (2).
Pressure
(MPa)
Outdoor unit
Operating
MCY-MUG
mode
Pd
Cooling
2.9
0401*
Heating
2.2
Cooling
3.1
0501*
Heating
2.3
Cooling
3.3
0601*
Heating
2.3
* This compressor is driven with a 4-pole motor. The value of the compressor frequency (rps) measured with a clamp meter at the compressor
lead line is two times the rotation count (rps) of the compressor.
* The temperature of the indoor heat exchanger (TC) indicates TCJ sensor temperature when cooling, and TC2 sensor temperature when
heating, respectively.
(2) Criteria for operating pressure
Operating mode
Indoor temperature (°C)
Outdoor temperature (°C)
High pressure (MPa)
Pressure
Low pressure (MPa)
* Criteria after 15 minutes or more has passed since operating started
(3) On rotations of outdoor fans
Outdoor fans may rotate slowly to control pressure when cooling with low outer air temperature or heating with
excessive load. For control content, also refer to items in Section 6, "Control Outline: Outdoor Unit, Outdoor Fan
Control."
0401
0501
0601
23.5
26.5
28.0
Pipe surface temperature
Indoor heat
Discharge
Suction
Ps
exchanger
(TD)
(TS1)
1.1
90
18
0.7
77
4
1.0
96
17
0.7
82
4
1.0
98
15
0.7
81
1
Cooling
Heating
18~32
15~25
25~35
5~10
2.0~3.3
2.5~3.3
0.5~0.9
0.5~0.7
(°C)
Outdoor heat
Liquid
exchanger
temperature
(TC)
(TE)
(TL1)
14
41
41
30
3
29
13
42
41
31
2
29
13
40
42
30
1
28
139
Air temperature condition
Compressor
(DB / WB) (°C)
drive revolution
Indoor
frequency
fan
Indoor
(rps)*
TA
44
High
27/19
45
High
20/-
53
High
27/19
52
High
20/-
57
High
27/19
60
High
20/-
Outdoor
TO
35/-
7/6
35/-
7/6
35/-
7/6
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