Vaillant auroTHERM VFK 125 Installation Manual page 28

6 On-roof mounting
4
3
Fig. 6.17 Mounting the hydraulic connections (6 or more collectors)
1
a
2
Fig. 6.18 Collector connection (fields arrangedn top of each other)
26
1
2
n
With fields arranged side by side
h Note
If you connect 6 or more collectors
one after another, the hydraulic con-
nections must be arranged diagonal-
ly, to force a complete flow.
• Insert the return (inlet) (2) into the lower
side opening on one side and, diagonally
across it, the supply (outlet with opening
for collector sensor) (4) into the upper side
opening.
• Remove the red plug and plug the collector
sensor into the opening.
• Use a cable tie to prevent the collector
sensor from slipping out.
• Fix connections and plugs with the clamps.
• Mount the plug without vent (3) in the
lower part of the collector.
• Mount the plug with vent (1) in the highest
position.
• Connect the collector supply and return to
the system with the connection pipes.
• If necessary check the connections for
leaks.
u
With fields arranged on top of each
other
• Join the collectors with the pipe coupling.
• Fix the pipe coupling with the clamps.
a Caution!
Danger of damage to the collector as
a result of incorrect assembly!
Make sure that the clamps (1) slide
into the slot on the pipe coupler (2).
Installation manual auroTHERM 0020057143_04