17
Collector panel hydraulics
Horizontal installation
The collectors can be assembled with
either the right side or left side pointing
down. When the left side is pointing
down the collector sensor is at the bot-
tom, and it is at the top when the right
side is down. Installing the collectors
horizontally improves the vapourization
behaviour at zero flow. The vapour
generated completely forces the solar
fluid out of the collector panel, which
slows down the fluid aging process. To
retain this benefit when collector panels
are joined together from one side only,
they should be connected together at
the bottom.
Diagonal connecting pipes
A maximum of 120 tubes (12 m² ab-
sorber surface) can be interconnected
in a collector panel array when they are
connected diagonally.
The minimum flow shall not fall below
30 l/m²h (caution when using variable
speed pumps).
When interconnected diagonally, instal-
lations with more than 120 tubes (12
m²) shall be connected in parallel
based on the Tichelmann principle.
The minimum flow shall not fall below
30 l/m²h per Tichelmann circuit (caution
when using variable speed pumps).
Interconnecting pipe on one side
only (horizontal)
When interconnecting the collector pan-
els on one side only, the connecting
pipes should be located at the bottom
to improve vapourization behaviour.
A maximum of 60 tubes (6 m² absorber
surface) can be interconnected in a
collector panel array when intercon-
nected on one side only.
The minimum flow shall not fall below
45 l/m²h (caution when using variable
speed pumps).
When interconnected on one side only,
installations with more than 60 tubes (6
m²) shall be connected in parallel
based on the Tichelmann principle.
The minimum flow shall not fall below
45 l/m²h per Tichelmann circuit (caution
when using variable speed pumps).
ma
x.
12
0 tu
bes
ma
x.
12
0 tu
bes
max. 6
0 tubes
max. 6
0 tubes
