12
INSTALLATION
INSTALLATION
9
If copper piping has been used and joints have been hot
brazed, flush out the system to remove any brazing resi-
dues. Seal test the system after you have flushed it out.
9
The solar circuit must be immediately filled with a mixture
of water and glycol, that avoids freezing and corrosion.
18
SYSTEM FILLING COCK
Before filling the system:
− Cut power off to the solar station and to the connected
integration system, by setting the system's main switch
and the device's main switch to OFF
9
Always use a mixture of water and glycol suitable for solar
applications. Choose the mixture according to the minimum
temperature that can be reached at the installation site and
to the maximum service temperature of solar collectors. For
further information, please refer to the glycol safety data
sheet.
When using glycol not pre-mixed:
− Do NOT part fill the circuit with pure glycol then add water
later.
− Ensure that filling water characteristics comply with pre-
vailing regulations; if that is not so, filling water must be
treated. Use portable treatment systems, for instance. In
particular, when chlorine content is very high (> 50ppm)
you must use distilled water for the mixture.
B
A
Mixture
of glycol
and water
VR
90°
90°
0°
0°
Position of the knob of the
valves
VM - VR
Flow in single
direction
(non-return
valve
function)
Flow
stopped
VR
VM
PC
PC
Heat transfer fluid filling pump
To fill the system, proceed as follows:
− Connect the filling pump (PC) as shown
− Turn handle on valve (VR) clockwise
Open taps (A) and (B) on the return tube
− Open manual degassing tap and any bleeder valve, lo-
cated at the highest points of the system, and keep them
open throughout the filling procedure.
