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EVH-X SPACE 2.1 - 12.1
M0SM10N17-03
11 GENERAL TECHNICAL DATA
O p e r a t i n g r a n g e ( C o o l i n g )
O p e r a t i n g r a n g e ( H e a t i n g )
The limits are meant as an indication and they have been calculated
by considering:
• general and non specific sizes
• standard airflow (Fan speed: Medium speed (M)
• non-critical positioning and correct use of the unit
• operation at full load
• difference between inlet / outlet water temperature = 5°C
Ta = Handling air coil entering air temperature (°C)
warning! wet bulb temperature
(W.B. = WET BULB)
TH2O = Water temperature at plate exchanger input (°C)
1 Standard operating range
2 Operating range for unit equipped with ‘V2MODX - 2-way modu-
lating valve for installation with disposable water’ option, i.e. ,
groundwater or anyway a source at low water temperature. By
this option the water feeding system must be at variable flow-
rate.
WET BULB TEMPERATURE - EXAMPLE
!! Warning: the graph refers to a water temperature differential of 5°C with a reduced water flow rate, the temperature differential is more
than 5°C, so it is necessary to reduce the specified operating range for steps exceeding the nominal 5°C.
Example: with a temperature differential of 8°C, the upper TH2O limit is no longer 45°C but 42°C.
The limits are meant as an indication and they have been calculated
by considering:
• general and non specific sizes
• standard airflow (Fan speed: Medium speed (M)
• non-critical positioning and correct use of the unit
• foperation at full load
• difference between inlet / outlet water temperature = 5°C
Ta = handling air coil entering air temperature (°C)
Warning! dry bulb temperature (d.b.=dry bulb)
TH2O = Water temperature at plate exchanger input (°C)
1 Standard operating range.
2 Standard unit operating range. In this range the COP efficiency
can be increased equipping the unit with the "V2MODX - 2-way
modulating valve for installation with disposable water" option,
that controls the heat exchange with the source. In this way the
unit performances are similar to the unit ones with feeding water
temperature (T H2O) equal to 25°C. With this option the water
feeding system must be at variable flow-rate.
Warning: the graph refers to a water temperature differential of 5°C
with a reduced water flow rate, the temperature differential is more
than 5°C, so it is necessary to reduce the specified operating range
for steps exceeding the nominal 5°C.
Example: with a temperature differential of 8°C, the lower TH2O limit
is no longer 10°C but 13°C.
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