5
Connections
CONNECTIONS
sensor pocket
toward the
heat transfer
circuit
captive nut
ring nut
seal ring
captive nut
ring nut
seal ring
from the
heat
transfer
circuit
captive nut
ring nut
seal ring
insulated connector
pipe
When tightening a
fitting,
HOLD THE OPPO-
SITE
FITTING STEADY
WITH
A SECOND TOOL
to avoid damage
Collectors in the same line must be connected so that the heat transfer fluid flows through them in series. The pipe to the
heat exchanger in the storage cylinder must be connected to the outlet with the temperature sensor socket on the last
collector in the line (see figure). Lines of solar collectors can be connected either in series (provided each line contains
no more than 6 collectors) or in parallel. The complete circuit must always be hydraulically balanced. See the following
sample layouts. Only the proper fittings must be used to connect one collector to another. These are provided separately
and include insulated connector pipes. Do not fix the ends of lines of solar collectors rigidly: leave them free to absorb
thermal expansion. If this is not possible, fit an expansion joint at each end.
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"
Содержание CFO-25S
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