ICV08
14
Manual bleed valve
(accessory)
Anti-freeze mix
Heat exchanger
of solar
Solar collector
Heat
transfer fluid
filling pump
°C
M
A
Water control system
R
M
7
3 - FILLING
1 - Open the non-return valve (A).
2 - Open the air vent at the highest point in the system
(see figure alongside) and keep it open throughout
the filling operation.
3 - Open the vent valve (7).
4 - Pump the heat transfer fluid around the circuit with an
external filling pump until all air bubbles have been
eliminated. Close the manual bleed valve.
5 - Temporarily raise the pressure in the system to 4
bar.
6 - Start up the system for about 20 minutes.
7 - Bleed the system again from step 2 until all the air has
been removed.
8 - Set the pressure in the system to 3 bar.
9 -
Close the non-return valve (A) and any open
vent valves to prevent the heat transfer fluid from
evaporating.
b
Do not fill the system in bright, sunny conditions or
if the collectors are hot.
b
Make sure that you have bled all the air out of the
system, using the water control system vent too.
Heat transfer fluid filling pump (accessory). A manual
bleed valve is not required if this pump is used.
On completion of the installation, perform the checks listed in the table below.
DESCRIPTION OK
Collector circuit
Cold pressure 3 bar
Collector circuit seal test
Safety valve check
Anti-freeze checked to - ___ °C
pH of heat transfer fluid = ____
Collector circuit bled
Flow rate of 30l/h per m
2
checked
Non-return valve functioning
DESCRIPTION
OK
Solar collectors
Visual check of collectors
Collectors cleaned if necessary
Visual check of collector fixing points
Visual check of roof impermeability
Visual check of insulation/lagging
CHECKS
Summary of Contents for ZENITH INSET
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