AUXILIARY PUMP
33
AUXILIARY PUMP – ELECTRICAL CONNECTION
The auxiliary pump, if installed, must be wired to the control board. The flexible cord supplied with the
pump must be housed in a 20 mm flexible conduit. The flexible conduit should be secured to the
insulated pipe work with the cable ties provided, to the side of the solar storage tank using the adhesive
backed cable tie mounts and cable ties provided and to the penetration in the solar storage tank jacket
using the cable gland provided.
It is necessary to make a penetration in the jacket of the solar storage tank, 30 mm to the right of and
aligned with the mid height point of the lower front cover, to accommodate the flexible cable and
conduit. The penetration, 20 mm in diameter, can be made using a hole saw, suitable for cutting
through 0.5 mm thick Colorbond. The edge of the penetration is to be smoothed off after forming to
ensure there are no sharp edges. Refer to the diagram for position.
Auxiliary Pump Wiring Connection Jacket Penetration
Warning:
The removal of the lower front cover will expose 240 V wiring. Switch off the electrical
supply at the isolating switch to the water heater before removing the lower front cover and if necessary
disconnecting the ribbon cable from the solar control module.
Connect the active plug from the auxiliary pump to the terminals marked “PUMP 2” on the control board
(refer to
“Wiring Diagram”
on page 30) and the earth wire spade connector from the auxiliary pump to a
terminal on the earth connector strip located on the bracket adjacent to the control board.
The solar monitor located on the lower front cover is connected to the solar control module by a ribbon
cable. The ribbon cable has sufficient length to enable the removal of the lower front cover and for it to
be set to one side of the opening without disconnecting the ribbon cable from the solar control module.
The ribbon cable can be disconnected from the solar control module if it is necessary to remove the
lower front cover completely from the work area in front of the solar storage tank.
If the ribbon cable from the solar monitor has been disconnected, reconnect it to the solar control
module prior to replacing the lower front cover.
Note:
If the connecting plug has a yellow label on one side, care should be taken when reconnecting
the ribbon cable to the solar control module, to ensure the side of the connecting plug with the yellow
label is
facing toward
the front cover opening. This type of connecting plug is non polarised and if it is
connected with the side of the connecting plug with the yellow label facing away from the front cover
opening, the functions of the green and red LEDs will be reversed. This will result in the red LED
flashing instead of the green LED at solar pump start up.
