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SOUND POWER AND SOUND PRESSURE LEVELS
IMPACT UNITS
MODEL
SPEED
125
20
Min
42.1
Med
45.5
Max
48.3
40
Min
45.9
Med
47.5
Max
50.7
60
Min
56.4
Med
56.6
Max
58.0
Sound Power Levels were obtained in full conformity with BS 4196: Part 5: 1981. Quantities are shown in dB
with a standard reference of 1 pW.
Sound Pressure Levels are dB relative to 2 x 10
conditions and are quoted as an average of all points on a hemisphere of a radius of 3m away from the
centre of the unit.
ELECTRICAL DATA
R407C AIR CONDITIONING SYSTEMS (MCU+)
Single Phase Supply 230Volts - 50Hz
INPUT
MODEL
COMBINATION
Cooling Heating Cooling
IMPACT + MCU+
kW
20(E) + 15
0.9
40(E) + 30
1.4
40(E) + 40
1.6
60(E) + 40
1.6
60(E) + 60
2.5
R407C AIR CONDITIONING SYSTEMS (DCU+)
Single Phase Supply 230Volts - 50Hz
MODEL
INPUT
COMBINATION
Cooling Heating Cooling
IMPACT + DCU+
kW
20(E) + 15
1.3
40(E) + 30
1.8
40(E) + 40
2.3
60(E) + 40
2.3
60(E) + 60
3.1
R407C HEAT PUMP SYSTEMS (MHPUE)
Single Phase Supply 230Volts - 50Hz
INPUT
MODEL
COMBINATION
STD.
MODEL
IMPACT + MHPUE
kW
20(E) + 15
0.9
40(E) + 30
1.4
60(E) + 50
2.1
* Max Phase
Tel: 01823 665660
Heronhill - for all your Marstair requirements
SOUND POWER LEVELS
Frequency Hz
250
500
1K
2K
48.6
52.2
47.4
40.7
51.3
54.6
51.8
45.3
53.9
57.2
55.2
48.8
51.4
53.3
51.3
46.9
53.1
55.4
53.5
48.9
55.6
58.0
56.6
51.9
51.1
52.8
50.2
47.2
53.0
55.4
52.9
48.6
57.8
60.3
58.9
53.7
-5
N/m
FULL LOAD AMPS
Heating
kW
AMPS
AMPS
0.9
6.4
4.0
1.7
8.7
7.6
1.7
10.8
7.6
2.5
10.9
11.1
2.5
10.2
10.8
FULL LOAD AMPS
Heating
kW
AMPS
AMPS
0.9
6.0
4.0
1.7
8.4
7.6
1.7
10.6
7.6
2.5
10.7
11.1
2.5
14.3
11.1
FULL LOAD AMPS
+ ELECT
STD.
+ ELECT
Heating
MODEL
Heating
kW
AMPS
AMPS
1.7
6.4
9.9
3.0
8.7
15.7
4.5
9.5
19.9
www.heronhill.co.uk
SOUND PRESSURE LEVELS
4K
dBA
dBA
34.8
52.1
31.6
39.1
55.6
35.1
42.9
58.7
38.2
44.6
55.6
35.1
45.8
57.6
37.1
48.0
60.4
39.9
42.4
55.2
34.7
43.6
57.3
36.8
48.9
62.6
42.1
2
and are calculated from the results under anechoic
Three Phase Supply 400Volts - 50Hz
SYSTEM
INPUT
MAX.
STARTING
Cooling Heating Cooling
CURRENT
AMPS
kW
kW
23
--
--
37
1.4
1.7
51
1.6
1.7
51
1.6
2.5
62
2.5
2.5
Three Phase Supply 400Volts - 50Hz
SYSTEM
INPUT
MAX.
STARTING
Cooling Heating Cooling
CURRENT
AMPS
kW
kW
25
--
--
37
1.8
1.7
51
2.3
1.7
51
2.3
2.5
61
3.1
2.5
Three Phase Supply 400Volts - 50Hz
SYSTEM
INPUT
MAX.
STD.
+ ELECT
STARTING
MODEL
Heating
CURRENT
AMPS
kW
kW
31
--
--
42
1.4
3.0
61
2.1
4.5
5/20
NC
26
30
33
30
32
35
27
31
37
SYSTEM
FULL LOAD AMPS
MAX.
STARTING
Heating
CURRENT
A/PH
A/PH*
A/PH
--
--
--
4.5
7.6
19
5.7
7.6
23
5.8
11.1
23
4.6
10.8
33
SYSTEM
FULL LOAD AMPS
MAX.
STARTING
Heating
CURRENT
A/PH
A/PH*
A/PH
--
--
--
3.6
7.6
19
4.8
7.6
24
4.9
11.1
24
6.0
11.1
26
SYSTEM
FULL LOAD AMPS
MAX.
STD.
+ ELECT
STARTING
MODEL
Heating
CURRENT
A/PH
A/PH*
A/PH
--
--
--
4.5
11.5
26
4.6
15.0
33
53799173-05
Fax: 01823 665807
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