5
Connections
seal ring
plugs
captive nut
seal ring
plugs
straight union
sensor
seal ring
toward the
heat transfer circuit
seal ring
from the
heat transfer circuit
When tightening a fitting,
HOLD THE OPPOSITE
FITTING STEADY WITH
A SECOND TOOL
to avoid damage
seal ring
ring nut
captive nut
Collectors must be connected together so that the heat transfer fluid flows through them in parallel. Two out of four of the
collector fittings at the ends of each row must be plugged.
The connection with the heat transfer circuit that goes toward the heat exchanger must be the one near the sensor pocket
of the last collector of the line. The connection with the circuit that comes back from the heat exchanger must be at the
bottom of the first collector of the line (see the picture above).
It is also possible to connect more then one line of solar collectors using brass compression elbows or welding the tubes
of the circuit.
Multi-collector installations must consist of strings of the same number of collectors (see the following sample diagrams).
Two lines in series
Two lines in parallel
T
T
Diameter of connection pipes for a specific flow rate of 30 lt/m
2
h
Total surface area (m
2
)
2 - 4
6 - 12
14 - 20
Diameter of copper pipe
(mm)
10 - 12
14
18
Diameter of steel pipe (inch)
3/8" - 1/2"
1/2"
3/4"
CONNECTIONS
