Rev. F 01-2022
17
Modd.
Lw
Lp
63
125
250
500
1K
2K
4K
8K
dB
G%$
G%$
dB
dB
dB
dB
dB
dB
dB
dB
50
71,1
62,3
56,2
54,7
53,6
48,2
44,8
35,7
71,9
58,0
50,0
75
73,1
64,3
58,2
56,7
55,6
50,2
46,8
37,7
73,9
60,0
52,0
100
75,1
66,3
60,2
58,7
57,6
52,2
48,8
39,7
75,9
62,0
54,0
150
80,6
71,8
65,7
64,2
63,1
57,7
54,3
45,2
81,4
67,5
59,5
200
82,6
73,8
67,7
66,2
65,1
59,7
56,3
47,2
83,4
69,5
61,5
300
90,4
81,6
79,5
73,6
68,5
60,1
55,3
47,0
91,3
78,0
70,0
440
91,4
83,4
80,3
74,6
69,9
59,7
55,5
46,7
92,4
79,0
71,0
500
91,4
83,7
79,8
74,3
70,7
61,6
57,6
49,2
92,4
79,0
71,0
MTEC.5811.GB-F-1 Operation and maintenance manual HHA series English
HHA
,QGXVWULDOGHKXPLGL¿HUV
3.7 Sound data
Sound data
2FW]
Lw: Sound power level according to ISO 9614.
/S6RXQGSUHVVXUHOHYHOPHDVXUHGDWPWIURPWKHXQLWLQIUHH¿HOGFRQGLWLRQVGLUHFWLRQIDFWRU4 DFFRUGLQJWR,62
3.8 Safety devices
+LJKSUHVVXUHVZLWFK
The high pressure switch stops the unit when the discharge compressor pressure is higher than the set value. The restart is automatic, done
when the pressure is under the level set in the differential value.
3.8.2 Defrost probe
It’s a device which signals to the electronic control, the necessity to make the defrost cycle. Once the defrost cycle is activated, the defrost
probe determines also its conclusion.
'HIURVWLQJ
7KHIURVWRQWKHFRLOREVWUXFWVWKHDLUÀRZUHGXFHVWKHDYDLODEOHH[FKDQJHDUHDDQGFRQVHTXHQWO\WKHXQLWSHUIRUPDQFHVDQGFDQVHULRXVO\
damage the system. All the units are supplied, standard, with a control which defrost automatically the heat exchanger if necessary. This
control provides a temperature probe (defrost thermostat) on the unit evaporator. When the defrost cycle is required, the microprocessor
control (according to set parameters), activates a hot gas injection, while the fan remains in operation. At the end of the defrost cycle, there
is a timer delay to allow condensate water to clear from the coil.
