M0G140F7-01 06/11/07 pag 38
OPERATING LIMITS (COOLING)
SIZE 82 102 122 162 182 222 262 302
EXTERNAL EXCHANGER
Max air intake temperature 1 °C 48 48,5 47 48,5 49 48,5 48,5 47,5
Max air intake temperature 2 °C 50 50,5 49 50,5 51 50,5 50,5 49,5
Min air intake temperature 3 °C -10
INTERNAL EXCHANGER
Max air intake temperature 4 °C 23
Min. water supply temperature 5 °C 5
Min. water supply temperature 6 °C -8
Warning: the still air condition is meant as absence of air flow to
the unit. Any wind condition can let air pass through the
condenser coil thus worsening the operating limits of the unit (see
limits with air speed at 0,5 m/s & 1 m/s).
ATTENTION: IN CASE OF PREDOMINANT WINDS,
WINDBREAK BARRIERS ARE NECESSARY.
Water thermal head (min / max) are indicated in the section
INTERNAL EXCHANGER PRESSURE DROP
(1) unit at full load: internal exchanger water 12/7°C
(2) internal exchanger water = 12/7°C
capacity-controlled unit (automatic capacity control)
(3) external exchanger air in quiet
(4) this limit can be exceeded for brief and transitory periods with
automatic capacity control of the unit: the maximum limit is 30°C.
capacity-controlled unit (automatic capacity control)
(5) standard unit
outside air temperature 35°C
(6) B = Low Temperature
outside air temperature 35°C
Fluid with ethylene glycol of 40%
SOUND LEVELS
Sound Power Level (dB)
Size Octave band (Hz)
63 125 250 500 1000 2000 4000 8000
Sound
pressure
level
dB(A)
Sound
power
level
dB(A)
82 80 75 78 73 70 66 58 52 60 75
102 79 74 77 73 70 66 60 51 60 75
122 79 74 77 72 70 67 61 52 60 75
162 86 79 75 77 74 66 61 56 61 78
182 86 79 74 76 74 68 63 57 62 78
222 86 79 77 78 74 69 61 56 62 79
262 88 81 78 79 77 72 66 58 64 81
302 88 81 79 80 75 72 63 56 64 81
Notes:
Measures according to ISO 3744 regulations,
with respect to the EUROVENT 8/1
certification.
the sound levels refer to the unit at full load, in
the rated test conditions.
The sound pressure level refers to a distance
of 1m from the external surface of the
units operating in an open field.
data referred to the following conditions :
internal exchanger water = 12/7°C
INTERNAL EXCHANGER PRESSURE DROP
20
30
40
50
60
70
80
1,0 1,5 2,0 2,5 3,0 3,5 4,0 4,5 5,0
Q (l/s)
DP (kPa)
222
82
302
122102
262
182162
UNIT WITHOUT HYDRAULIC
CIRCUIT COMPONENTS
DP = PRESSURE DROP
Q = WATER FLOW
GRANDEZZA 82 102 122 162 182 222 262 302
Portata minima [l/s] 0,70 0,80 0,85 1,00 1,11 1,51 1,74 1,95
Portata massima [l/s] 1,52 1,80 2,85 2,71 3,05 4,05 4,65 5,00
CORRECTION FACTOR FOR ANTIFREEZE SOLUTIONS
% ethylene glycol by weight 5% 10% 15% 20% 25% 30% 35% 40%
Freezing temperature °C -2,0 -3,9 -6,5 -8,9 -11,8 -15,6 -19,0 -23,4
Safety temperature °C 3,0 1,0 -1,0 -4,0 -6,0 -10,0 -14,0 -19,0
Cooling Capacity Factor Nr 0,995 0,990 0,985 0,981 0,977 0,974 0,971 0,968
Compressor input Factor Nr 0,997 0,993 0,990 0,988 0,986 0,984 0,982 0,981
Internal exchanger Glycol solution flow Factor Nr 1,003 1,010 1,020 1,033 1,050 1,072 1,095 1,124
Pressure drop Factor Nr 1,029 1,060 1,090 1,118 1,149 1,182 1,211 1,243
The correction factors shown refer to water and glycol ethylene mixes used to prevent the formation of frost on the exchangers in the water
circuit during inactivity in winter.
INTEGRATED HEATING CAPACITIES
Anternal exchanger inlet air temperature °C ( D.B.)
-5 / -5.4 0 / -0.6 5 / 3.9 OTHERS
Heating capacity multiplication coefficient 0,89 0,88 0,94 1
To obtain the integrated heating capacities (the real heating capacity considering the defrost cycles too), multiply the kWt value in the heating
performance tables by the following coefficient.
EXCHANGER PRESSURE DROP LIMIT. WAR-NING:
DON'T USE OVER THIS LIMIT
EXCHAMGER PRESSURE DROP LIMIT. WARNING:
DON'T USE BELOW THIS LIMIT
Minimum flow
Maximum flow
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