16
3.4 Dual-line Pump Station Installation
3.4.1 Mount pump station
Route the supply cable (not supplied) behind the dual-line pump station (SDPS~) and
through the hole in the centre of the rear casing.
Using the fasteners supplied (if suitable, otherwise use appropriate alternatives) mount the
pump station on a flat vertical surface. It
must not
be mounted horizontally or at an angle.
3.4.2 Connect pump station pipework
Fit the 1” x 22mm connection tails (supplied) to the four pipework connections
A
,
B
,
C
&
D
of
the pump station using the sealing washers provided. Tighten firmly but do not over-tighten.
Alternatively, suitable flexible pipework with appropriate 1” union nuts and washers can be
used to connect the pump station.
Connect the pipework running from the collector to top connections
A
&
B
of the pump
station as indicated. The pipe connected to
A
must be the flow from the collector i.e. the end
of the collector with fitted with the temperature sensor pocket.
Connect the pipework running from the solar coil of the DHW storage cylinder (or swimming
pool heat exchanger) to the bottom connections
C
&
D
of the pump station as indicated.
Pipe the pressure relief discharge
E
to a safe visible discharge point.
Connect the solar expansion vessel (SEV~) to the expansion vessel connection
F
via the
flexible hose, using the sealing washers supplied with the vessel fitting kit (SVFK~). Mount
the vessel as instructed in the fitting kit instructions.
Note:
Solder ring fittings and standard solder joints
must not
be used, as the high
temperatures generated occasionally can melt the solder. Use only compression fittings,
appropriate union fittings or high temperature solder or braze
suitable for up to 250
0
C
.
Figure 16: Dual-line pump station installation
Expansion Vessel Connection
(
F
)
Pressure Relief Discharge
(
E
)
Flow from
Collector
(
A
)
Return to
Collector
(
B
)
Flow to
Solar Coil
(
C
)
Return from
Solar Coil
(
D
)
Summary of Contents for Solar SHP20
Page 2: ......
