Mitsubishi PUMY-P60NKMU - Capacity Correction Methods

14
4-4. CORRECTING COOLING AND HEATING CAPACITY
4-4-1. Correcting changes in air conditions
(1) The performance curve charts (Figure 1, 2) show the ratio by the temperature condition change when the rated capacity (total
capacity) and the rated input are presumed 1, under standard length (7.6 m [25 ft]) and standard temperature condition.
• Standard conditions:
• Use the rated capacity and rated input given in “4-2.”.
• The input is the single value on the side of the outdoor unit; the input on the sides of each indoor unit must be added to
obtain the total input.
(2) The capacity of each indoor unit may be obtained by multiplying the total capacity obtained in (1) by the ratio between the
individual capacity at the rated time and the total capacity at the rated time.
individual capacity at the rated time
Individual capacity under stated conditions = total capacity under the stated conditions o
total capacity at the rated time
Rated cooling capacity
Rated heating capacity
Indoor D.B. 26.7°C / W.B. 19.4°C [D.B.80°F / W.B.67°F]
Outdoor D.B. 35°C [D.B.95°F]
Indoor D.B. 21.1°C [D.B.70°F]
Outdoor D.B. 8.3°C / W.B. 6.1°C [D.B.47°F / W.B.43°F]
Figure 2 Heating performance curve
(3) Capacity correction coefficient curve
Figure 1 Cooling performance curve
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
24 (75.2)
22 (71.6)
20 (68)
18 (64.4)
16 (60.8)
24 (75.2)
22 (71.6)
20 (68)
18 (64.4)
16 (60.8)
-10 0 10 20 30 40 50
[°CDB]
14 32 50 68 86 104 122
[°FDB]
Ratio of cooling capacity
0.6
0.5
0.4
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
0.6
0.5
0.4
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
-25 -20 -15 -10 -5 0 1510520
-13 -4 5 14 23 32 595041 68
15 (59)
21.1 (70)
25 (77)
27.2 (81)
15 (59)
21.1 (70)
25 (77)
27.2 (81)
[°CWB]
[°FWB]
Ratio of power input
INDOOR
INDOOR
:WB (°FWB)
:WB(°FWB)
OUTDOOR
Ratio of power input
Ratio of heating capacity
OUTDOOR
INDOOR
INDOOR
:DB (°FDB)
:DB(°FDB)
OCH502C