Installation of a
dual-pump system
Installation of a
single-pump system
Connection flange
VG basic vessel up to
∅
740 mm
Connection flange
VG basic vessel above
∅
1000 mm
Overflow manifold
connection
Pump connection
Hose set
connection for
VF secondary
vessel (optional)
Installation of the VG basic vessel
There are numerous installation variants for the control unit.
– Remove the control unit from the pallet.
– Transport to the installation site, making sure that the control unit is
carried by the frame.
– When aligning the control unit, make sure that the valves and feed
facilities of the connection lines can be operated.
The base plate of the single-pump systems can be turned.
– Align the ’variomat’ control unit and VG basic vessel.
– Tension-free (moment-free) installation is required. An additional load
from pipelines or devices is not permitted.
– The safety valve (27) on the control unit must be equipped with a
blow-out line on site; this line must be laid in such a manner that
any risk of injury from the escaping medium is ruled out.
’variomat’ control unit to the
left of the VG basic vessel
Preferred version
’variomat’ control unit
to the left of the VG basic vessel
Preferred version
’variomat’ control unit
to the right of the VG basic
vessel
’variomat’ control unit
in front of the VG basic
vessel
’variomat’ control unit to the
right of the VG basic vessel
’variomat 2-2’ dual-pump system
’variomat 1 and 2-1’ single-pump system
– Align the VG basic vessel so that the label with the connection faces the
connection points (2x external thread) of the control unit and the distance
to the control unit corresponds to the length of the connection set.
– Assemble the level gauge (
→
p. 9) and add-on parts (
→
p. 8).
– Screw the connection set
1
2
using the screw connections to the two
free 1” pipe nipples on the lower vessel flange with seal.
– In the case of dual-pump systems it must be ensured that the longer hose is
used for joining the pump suction side with the vessel.
– Ensure that the overflow manifold connection
1
and the pump connection
2
are not confused. If they are, there is a risk the pump may run dry.
– It is imperative that the control unit and the VG and VF vessels are
installed at the same level. On no account should the control unit be higher
than the vessels.
WM O P
P O WM
WM
O
P
WM
O
P
1
1
1
2
2
2
2
2
2
3
3
3
Label
Label
Water make-up
to the vessel
Overflow
from
the system
Pumps
to the
system
reflex ’variomat’
Assembly
7
Installation of the ’variomat’ control unit
