Issue Date: 01.06.16
Review Date: 01.06.16
H0024 028626 A
Installation Manual for EHW Tanks: MAN_INST_TANK_SRT(AA)|10
Figure 3 Apricus Pump Station Kit
5.3.1.3 SOLAR RETURN
IMPORTANT
Cap this port with brass plugs supplied when solar
collectors are not being installed.
When solar DHW system is set up, this port is used for the
water line returning from the solar collectors after being
heated. This line does not require any additional
components, but should be run as short as possible and
have continuous fall back to the solar return port.
Apricus recommends using a three way ball valve and
drain on the solar return line to allow convenient system
filling and draining.
On the solar return line near the tank port, it is
recommended to include a U-shaped heat trap with an
approximate 25cm dip in the piping configuration to
prevent reverse thermos-siphoning.
5.3.1.4 OUTLET
The outlet is where the hot water from the tank is
extracted to be supplied to the household.
5.3.1.5 SENSOR PORTS
When solar DHW system is set up, the sensors must be
coated with heat transfer paste and inserted through the
cable gland into the appropriate sensor port and
tightened. The top sensor port houses S3 and the bottom
sensor port houses S2.
The Apricus controller requires three sensor leads be
installed into the appropriate sensor ports in the solar
system; this is vital for operation of the solar system.
The first temperature sensor port is located on either side
of the collector manifold. Sensor 1 (S1) must be
connected to the outlet of the manifold (the higher side).
Apricus solar rated tanks come with two temperature
sensor ports. The bottom port connects to the Sensor 2
(S2), the top port connects to the Sensor 3 (S3) sensor.
5.3.1.6 PTRV PORT
The PTRV port is where the tank ‘pressure and
temperature relief valve’ is to be installed. All PTRV’s
must be fitted with a copper drain pipe to carry any
discharge to an appropriate drain.
IMPORTANT
All storage tanks include a PTRV, which is located in
the tank packaging, either in a box, vertical column or
element cover.