Caleffi solar iSolar WMZ Посібник - Сторінка 7

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3.
Determining the ratio of the glycol-water mixture
(when using ready mixed fluids, pay attention to manufacturers' instructions)
4.

Commissioning

Commissioning:
Version
Language
Temp. unit
Commissioning:
Language
Temp. unit
Flow unit
Commissioning:
Temp. unit
Flow unit
Energy unit
Since the heat capacity of the heat transfer fluid depends
on the concentration of glycol, the proportion of the glycol/
water-mixture has to be determined first.
Determining the ratio for known volumes:
If the volumes of water and glycol in the system are known,
the value in vol. % is calculated as follows:
Vol % = (Vg : (VW + Vg)) x 100
VG: volume of glycol
VW: volume of water
Example:
if 15 liters of water and 20 liters of glycol are used in the
solar circuit, then follows:
Vol % = (20 : (15 + 20)) x 100 = 57
Determining the ratio for unknown volumes:
refractomter:
In order to analyze the system, a small amount of fluid has to
be withdrawn from the solar circuit and applied to the prism
surface of the refractometer. Hold the pointy end against the
light and turn the ocular until the borderlines become visible.
The borderlines indicate the freezing temperature. In a table
on the receptacle of the heat transfer fluid, the value for the
vol.-% corresponding to the temperature value, is shown.
When the iSolar WMZ calorimeter is commissioned for the
first time or after a reset, it will run a commissioning menu.
The commissioning menu leads the user through the most
important adjustment channels needed.
Commissioning menu
The commissioning menu consists of the channels described
x.xx
in the following.
English
At the top of the commissioning menu, the version number
°C
of the device is indicated.
Language
Selection: Deutsch, English, Francais, Italiano, Espanol
English
Factory setting: Deutsch
°C
Î Adjust the desired menu language.
Litres/hour
Temp. unit
Selection: °C, °F
°C
Factory setting:°C
Litres/hour
Î Adjust the desired temeprature unit.
kWh
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