Toshiba MMY-MUP0961HT6P-UL Service Manual page 146

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 T dry bulb temperature difference
between suction and discharge air of the indoor unit is 46.4°F(8°C) or more, it is normal.
(2) Heating operation
After operating for a minimum of 30 minutes in "HEAT" mode, if the T dry bulb temperature difference
between suction and discharge air of the indoor unit is 59°F(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 T temperature difference is
small.
* Consider that T 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.
Model MMY-MUP
Current value (A)
Model MMY-MUP
Current value (A)
Note 3: Criteria for cycle status
(1) These data are based on operating a 4-way Air Discharge 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).
Outdoor
Pressure
Unit Operating
(Psi)
MMY- Mode
MUP
Pd Ps
Cooling 391 145
0721*
Heating 310 102
Cooling 430 142
0961*
Heating 307 96
Cooling 419 131
1201*
Heating 321 94
Cooling 443 142
1441*
Heating 310 91
Cooling 440 139
1681*
Heating 330 91
Cooling 445 139
1921*
Heating 330 93
Cooling 383 146
072H1*
Heating 310 105
Cooling 393 140
096H1*
Heating 305 101
Cooling 402 131
120H1*
Heating 319 96
* This compressor is driven with a 6-pole motor. The value of the compressor frequency (rps) measured with a
clamp meter at the compressor lead line is three times the rotation count (rps) of the compressor.
* Each compressor may have a different frequency as a measure against resonance.
* 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
Pressure
Operating
psi (MPa)
Mode
Pd
Cooling 290.1 ~ 478.6 (2.0 ~ 3.3)
Heating 362.6 ~ 478.6 (2.5 ~ 3.3)
* Criteria after 14 minutes or more has passed since operating started
0721* 0961* 1201*
16.53 16.61 22.95
072H1* 096H1* 120H1*
15.14 17.6 23.74
Pipe Surface Temperature
(°F)
Indoor Heat
Discharge Suction
Exchanger
TD1 TS1 TC2
166 64 55
143 37 80
178 62 55
146 34 82
181 63 55
153 34 80
183 66 57
150 31 81
186 63 57
160 32 84
189 63 56
159 28 85
166 65 55
143 37 80
167 65 56
142 37 82
178 61 56
150 34 83
PS
72.5 ~ 130.5 (0.5 ~ 0.9) 64.4 ~ 89.6 (18 ~ 32)
72.5 ~ 101.5 (0.5 ~ 0.7) 59 ~ 89.6 (15 ~ 32)
1441* 1681* 1921*
23.38 26.07 30.28
Outdoor Heat Liquid
Compressor 1 Compressor 2
Exchanger Temperature
TE1 TL3
103 75
33 73
104 79
32 77
108 85
32 64
108 89
32 69
108 87
33 77
108 90
31 77
101 77
34 75
104 89
33 74
103 84
32 76
Temperature
°F(°C)
Indoor Outdoor
77 ~ 95 (25 ~ 35)
41 ~ 95 (5 ~ 35)
- 146 -
Compressor Rotation Air Temperature
(rps)
Indoor
Fan
Outdoor Indoor
Cmp.1 Cmp.2
44 - High
50 - High 47/43
58 - High
67 - High 47/43
54 - High
58 - High 47/43
60 - High
69 - High 47/43
66 - High
77 - High 47/43
62 61 High
72 70 High 47/43
44 - High
49 - High 47/43
43 - High
45 - High 47/43
54 - High
58 - High 47/43
(DB/WB)(°F)
TO TA
95/- 80/67
70/-
95/- 80/67
70/-
95/- 80/67
70/-
95/- 80/67
70/-
95/- 80/67
70/-
95/- 80/67
70/-
95/- 80/67
70/-
95/- 80/67
70/-
95/- 80/67
70/-