Toshiba MMW-UP0271LQ-E Service Manual page 42

Note 1: Criteria for the difference between suction and discharge temperatures, between water
inlet and water outlet temperature
(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 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 15°C or more, it is normal.
After operating for a minimum of 30 minutes in "HEAT" mode, if the T water temperature difference between
water inlet and water outlet of the hot water module is 3 to 5 degrees, it is normal. (Hot water module)
* 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 or the difference between the temperature
set by the remote controller and the water inlet temperature 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.
Outdoor unit MMY-MAP
Current value (A)
Model MMY-MUP***HT8
Current value
Note 3: Criteria for cycle status
(1) These data are based on operating a 4-way Air Discharge Cassette type air conditioner including Hot Water
Module 1 unit 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).
<SMMS-i>
Pressure
(MPa)
Outdoor
unit
MMY-
Discharge Suction
MAP
Pd Ps
(TD)
2.9 0.9 85
0804*
3 0.7 85
3 0.8 85
1004*
3.1 0.7 85
3.1 0.8 85
1204*
3.1 0.7 90
3 0.8 85
1404*
3.1 0.7 85
3.1 0.8 90
1604*
3.1 0.7 90
<SMMS-e>
Pressure
Outdoor
(MPa)
unit Operating
MMY- mode
MAP
Pd Ps
Cooling 3.2 0.9
1606*
Heating 2.8 0.7
Cooling 3.1 0.9
1806*
Heating 2.8 0.7
Cooling 3.1 0.9
2006*
Heating 2.8 0.6
Cooling 3.2 0.9
2206*
Heating 2.7 0.6
*1 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.
*1 Each compressor may have a different frequency as a measure against resonance.
*2 The temperature of the indoor heat exchanger (TC) indicates TCJ sensor temperature when cooling, and TWO (TC2) sensor temperature
when heating, respectively. And the temperature of the Hot Water Module indicates TWO (TC2) sensor temperature when heating only.
∗ ∗ ∗
0804 1004 1204
23.5 25.5 28.5
0801 1001 1201
(A) 15.4 20.5 24.5
Pipe surface temperature
(°C)
Hot water
Indoor heat
module
exchanger
(TS) TWO (TC2) exchanger
(TC)*2
*2
15 - 10
5 35 35
15 - 8
4 35 35
17 - 8
2 35 35
15 - 10
4 35 35
15 - 10
2 35 35
Pipe surface temperature
Indoor heat
Discharge Suction
exchager
(TD) (TS)
(TC)
90 16 10
85 3 30
80 15 11
70 4 30
85 15 11
75 3 30
95 14 11
75 3 30
∗ ∗ ∗
1404 1604 1606 1806
33.2 36.5 35.8
1401 1601 1801 2001
27.5 30.5 34 36
Number of compressor rotations
Outdoor
Compressor Compressor Compressor
Liquid
heat
temperatre
(TL)
1
(TE)
40 40 50
3 30 50
40 40 65
2 30 65
40 40 70
2 30 75
40 40 60
3 30 60
40 40 65
2 30 65
( )
Outdoor heat Liquid
exchanger tempreture
(TE) (TL3)
40 35
2 25
40 35
3 25
40 35
2 25
40 35
2 20
– 42 –
∗ ∗ ∗
2006 2206
40.6 44.9 49.3
2201 2401
51 54
(rps)*1
Indoor
fan
2 3
50 - High
50 - High
65 - High
65 - High
70 - High
75 - High
60 60 High
60 60 High
65 65 High
65 65 High
Number of compessor
rotations
(rps) *1
Compressor Compressor
1 2
70 70
70 70
70 70
75 75
80 80
85 85
100 100
85 85
Air temperature
condition
Inlet water
(DB/WB) (°C)
temperature
(°C)
TWI (TA)
Indoor Outdoor
27/19 35/-
20/- 7/6 30
27/19 35/-
20/- 7/6 30
27/19 35/-
20/- 7/6 30
27/19 35/-
20/- 7/6 30
27/19 35/-
20/- 7/6 30
Air temperature
condition
Indoor (DB/WB) ( )
fan
Indoor Outdoork
High 27/19 35/-
High 20/- 7/6
High 27/19 35/-
High 20/- 7/6
High 27/19 35/-
High 20/- 7/6
High 27/19 35/-
High 20/- 7/6