8
x
Hydraulic connection
FA ROTEX A1 BGe - 02/2014
41
8 Hydraulic connection
8.1 Connection accessories
8.1.1 Safety group SBG A1
For the hydraulic connection of the ROTEX A1 you must comply
with the safety technological regulations in accordance with
EN 12828.
ROTEX recommends the use of the safety group offered as an
accessory (
SBG A1
,
15 60 18
).
Ɣ
Install the components of the safety group SBG A1, as shown
in fig. 8-2, to the flow and return connections of the
ROTEX A1.
– Install the KSG-mini so that the pressure gauge can be
easily seen during filling.
– There should be no hydraulic blocking elements between
the heat generator and the safety valve.
– Any steam or heating water which may escape must be
diverted by a suitable blow-off line with constant gradient
in a frost-protected, safe and observable manner.
– The line should be routed so that the upper half of the
ROTEX A1 can be hinged open without any problems
after installation.
– A diaphragm expansion vessel of adequate dimensions
and pre-set for the heating system must be connected to
the return line. There should be no hydraulic blocking ele-
ments between the heat generator and the safety valve.
– Locate the diaphragm expansion vessel in an easily
accessible place (maintenance, parts replacement).
8.1.2 Connection kit A1
If a heat exchanger is to be connected to the heating system,
ROTEX recommends fitting the connection kit
(
VSA1
,
15 48 22
).
Ɣ
Install the components of the connection kit VSA1, as shown
in fig. 8-4, after installation of the safety group SBG A1, to the
boiler flow and return connections for the heating system.
– Install the ball cocks in such a way that the union nuts
point to the boiler.
Ɣ
Mount the 3-way diverter valve on the flow connection of the
safety group SBG A1. Ensure the
correct position
:
– Connection B: on the heating side.
– Connection A: storage tank side.
1
Double nipple 1"
2
Connector for KFE cock +
diaphragm expansion ves-
sel
3
KFE cock
4
Connection elbow 1" (2x)
5
Boiler safety unit (KSG-mini)
with safety valve 3 bar, rapid
bleeder and pressure gauge
6
T-Piece 3x1"
7
Flat seal 1" (4x)
9
Boiler return
10
Boiler flow
Fig. 8-1
Safety group SBG A1
Fig. 8-2
Installation of safety group SBG A1 (for legend see fig. 8-1)
Fig. 8-3
Connection kit VSA1 (for legend see fig. 8-4)
