37
11 - TECHNICAL INFORMATION
the limits are indicative and have been calculated
considering:
- values general and not specifications,
- standard air flow-rate,
- non-critical positioning and correct use of the unit,
- operation at full load
- difference between inlet / outlet water temperature
= 5°C
Ta = air temperature entering the air handling
coil (°C)
CAUTION! temperature measured with wet bulb
(W.B.=WET
BULB)
TH2O = Water temperature at plate exchanger
input (°C)
1 = Standard operating range
2 = field of use for unit equipped with plumbing
assembly for waste water system (Optional)
5
10
15
20
25
30
10
15
20
25
30
35
40
45
50
T H
2
O [°C]
T
a
W.
B.
[
°C
]
(1)
(2)
°C
WET TEMPERATURE - EXAMPLE
°C
19°C W.B.
24°C D.B. / 63% R.H.
26°C D.B. / 52% R.H.
27°C D.B. / 48% R.H.
The sound levels are referred to units
working at full load in nominal conditions.
The sound pressure level is referred at a
distance of 1 m. from the ducted unit
surface working in free field conditions.
External static pressure 50 Pa.
Measurements are made in compliance
with UNI EN ISO 9614-2.
Please note that when the unit is installed
in conditions different from nominal test
conditions (e.g. near walls or obstacles in
general), the sound levels may undergo
substantial variations.
11.7 SOUND LEVELS
11.8 OPERATING LIMITS - COOLING
