Glow-worm Clearly Solar System Hydraulics - Manual (Page 10)

10
Component Volume (l)
Flurocyl 200 l heat exchanger solar circuit 3.04
Flurocyl 250 l heat exchanger solar circuit 3.04
Flurocyl 300 l heat exchanger solar circuit 4.14
Flurocyl 200 l heat exchanger reheating circuit 3.7
Flurocyl 250 l heat exchanger reheating circuit 3.7
Flurocyl 300 l heat exchanger reheating circuit 3.7
Solar pump unit
0.9
Vertical solar thermal flat plate collector 1.85
Horizontal solar thermal flat plate collector 2.16
Protection vessel 5.0
Table 3.2 Volume of individual circuits
3 Component Specifications
3.2 Solar expansion vessel
The solar expansion vessel, is used to equalise the pressure
while the pressure relief valve blows off the solar fluid into
the collecting container via the pressure release pipe if the
operating pressure of 6 bar is exceeded.
The size of the solar expansion vessel is based on the
expansion volume of the solar system.
The expansion vessel not only accommodates the expansion
volume of the solar fluid, but also the entire volume of the
collectors in the event of a shutdown. The total volume of
the solar system is the total of the individual values of the
collector, heat exchanger volume and the volume of the
pipeline.
The admission pressure of the solar expansion vessel can be
set between 0.5 and 4.0 bar.
3.3 Thermal cut out of the solar pump
The solar pump must be protected by its own thermal cut out
(TCO) which must be mounted on the solar cylinder (pre-
assembled at the factory on the Glow-worm Flurocyl cylinder).
The power supply to the pump MUST be interrupted at
cylinder temperatures higher than 90°C.
3.4 Solar fluid
This information applies to Glow-worm solar fluid (20 l
canister: item no. 0020054968).
Glow-worm solar fluid is a ready-mixed antifreeze and
anticorrosive, consisting of approximately 45% propylene
glycol with anti-corrosion inhibitors and 55% water. It is
resistant to high temperatures.
Furthermore the solar fluid has a high thermal capacity.
The inhibitors provide reliable corrosion prevention when
using different types of metal (mixed installations).
NOTE: Do not use any other anti-freeze or inhibitors with the
collector. Only Glow-worm solar fluid is approved.
IMPORTANT: Risk of damage! Glow-worm solar fluid is ready
mixed. You may not under any circumstances mix it with water
or other fluids. Otherwise it will become ineffective as an
antifreeze or anticorrosive, resulting in damage to collectors or
other parts of the system.
Glow-worm solar fluid is infinitely durable in hermetically
sealed containers.
Skin contact is normally not dangerous. Eye contact only
causes minor irritations, you should nevertheless immediately
wash your eyes.
Observe the safety data sheet, see section 9.
3.5 Protection of the solar circuit against frost
and corrosion
To protect the solar system reliably against frost in winter, the
entire solar circuit must be filled 100% with solar fluid.
NOTE: You can achieve frost resistance of about -28°C by
filling the solar system with Glow-worm solar fluid. No damage
is caused by frost even at outside temperatures below -28°C,
since the expansive effect of the water is reduced. Check the
antifreeze effect after filling the system and then once a year.
To check the solar fluid; refer to the operating manual of the
solar fluid tester (item no. 0020054984).