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Technical manual – Installation instructions and start-up X-RAY R - ver. 1.0 del 07/11/2018
FLUSHING AND FILLING
Flushing and filling must be carried out only when the collectors are covered (see the paragraph “Covering the
collectors” above). Fill the collectors with anti-freeze/water mixture supplied by manufacturer.
Anti-freeze recommended by manufacturer:
After the first filling the collectors cannot be emptied completely, so to avoid any “risk of freezing” this anti-freeze/water
mixture must be used to test working operations and wet sealing.
Any damage caused by freezing is not covered by warranty.
INSTALLATION OF TEMPERATURE SENSOR
The temperature sensor must be installed in the specific holder on the collector head (hot side) to ensure optimal
contact for accurate readings, sensor holder should be filled with conducting compound. Sensor must be temperature
resistant up to 250°C.
OPERATING PRESSURE
The normal operating pressure is 2-3 bar.
The maximum test pressure is 10 bar.
START UP
SOLAR LIQUID FAST G28
Premixed solar liquid ready for use in solar thermal vacuum
panels, blue in colour based on monopropylene glycol, suitable
for temperatures as low as -28°C. The chemical formula which
includes corrosion inhibitors prevents the corrosion of the
metals with which it comes into contact, and thus protects
metals like aluminium and copper of which the main parts of a
solar system are made.
Insoluble metal oxides, which can develop if the system is not
bled and which cannot be removed, will form mud which over
time can deposit on the heat exchange surfaces thus decreasing
the yield, and therefore the mixture includes additives with a
dispersing action so that any deposits are kept in suspension.
Available in drums of 10 and 20 litres.
CHEMICAL AND PHYSICAL
CHARACTERISTICS
Appearance
Blue liquid
Smell
Not offensive
PH as is
8,5-9
Freezing point
-28°C
Boiling point
From 103 to 172°C
(1 bar - 8 bar)
