Filter
Top Products
17
(2) Method for Obtaining the Equivalent Piping Length
Equivalent length for type P48 = (length of piping to farthest indoor unit) + (0.3 o number of bends in the piping) (m)
Length of piping to farthest indoor unit: 80 m [262 ft]
5-3-3. Correction of Heating Capacity for Frost and Defrosting
If heating capacity has been reduced due to frost formation or defrosting, multiply the capacity by the appropriate correction
factor from the following table to obtain the actual heating capacity.
Correction factor diagram
Outdoor Intake temperature (W.B.°F)
43 39 36 32 28 25 21 18 14
Outdoor Intake temperature (W.B.°C)
6420-2-4-6-8-10
Correction factor
1.0 0.98 0.89 0.88 0.89 0.9 0.95 0.95 0.95
(1) Capacity CORRECTION CURVE (Figure 3)
Cooling
Heating
100
95
90
85
80
75
70
5 101520253035404550556065707580[m]
Cooling P36 model
Heating P36, 48 models
Cooling P48 model
Capacity ratio [%]
Corrected pipe length
[16] [33] [50] [70] [80] [100] [115] [130] [150] [165] [180] [195] [215] [230] [245] [260][ft]
1.5m
[4.9ft]
1m [3.3ft]
MICROPHONE
UNIT
GROUND
5-4. NOISE CRITERION CURVES
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
PUMY-P48NHMU(-BS)
PUMY-P48NHMU
1(-BS)
PUMY-P48NHMU
2(-BS)
PUMY-P48NHMUR3(-BS)
COOLING
MODE
HEATING
50
SPL(dB)
52
LINE
PUMY-P36NHMU(-BS)
PUMY-P36NHMUR1(-BS)
COOLING
MODE
HEATING
49
SPL(dB)
51
LINE