Vaillant auroTHERM VFK 145 H Installation Manual page 40

5 Flat roof fitting and installation
Installing hydraulic connectors
A
B
Caution.
Risk of damage to the collector.
Improper installation of the pipe connectors
may damage the collector.
▶
Ensure that the clamps (A) slide into the
grooves of the pipe connector (B).
18. Remove the delivery plugs from the mounting open-
ings.
19. Insert the top (1) and bottom (2) pipe connectors into
the mounting openings until the stop.
20. Slide the clamps into the rails of the mounting openings
(2).
Installing additional collectors
A
B
21. Position the next collector on the lower mounting rail.
22. Slide the collector to the first collector.
Caution.
Risk of damage to the collector.
Improper installation of the pipe connectors
may damage the collector.
▶ Ensure that the clamps (A) slide into the
grooves of the pipe connector (B).
23. Secure the top and bottom hydraulic connectors with
the clamps ((1) and (2)).
24. Slide the second top mounting rail until it is flush with
the collector.
40
25. Screw the second top mounting rail tightly onto the
mounting rail of the first collector using the correspond-
ing bracket.
1
–
Working materials: 5 mm Allen key
Completing collector rows
Conditions: Not all collectors in a row have been installed yet.
▶
Install the hydraulic connectors. (→ Page 40)
2
▶
Install an additional collector. (→ Page 40)
5.2.3 Installing hydraulic connections
Caution.
Leak caused by incorrect accessories.
Incorrect accessories may result in a leak in
the solar circuit and cause material damage.
▶ Only work in the solar circuit with hard
soldered connections, flat seals, compres-
sion fittings or press fittings which have
been approved by the manufacturer for
use in solar circuits and at correspond-
ingly high temperatures.
1. Install the hydraulic connections on the collectors, as
specified in the following sections.
Note
If you connect six or more collectors one
behind the other, you must arrange the hy-
draulic connections diagonally in order to
force complete flow. (→ Page 9)
1
Conditions: Number of collectors: 1 ... 5
2
▶
Connect the flow (outlet with opening for collector
sensor) at the top (1).
▶ Secure the flow with the clamp (1).
▶ Remove the red plug from the opening for the collector
sensor.
▶
Insert the VR 11 collector sensor into the opening (1).
▶
Use a cable tie to secure the VR 11 collector sensor
against slipping out.
▶ Connect the return (inlet) at the bottom (2).
▶ Secure the return with the clamp (2).
Installation manual auroTHERM, auroTHERM plus 0020100571_03
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