Benchmark POTTERTON Gold, Installation And Servicing Instruction

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Fig.7 Electrical Connections (Schematic)
AUXILLARY HEATING CONTROL DIRECT MODELS
CONNECTION TO SOLAR PRIMARY CIRCUIT
The lower (solar) coil of the POTTERTON GOLD SOLAR
cylinder must be connected to a fully pumped solar
primary circuit. The connections are suitable for
22mm copper pipe direct to the compression fittings
provided. The connections are also threaded 3/4” BSP
male parallel should BSP be required.
The solar primary circuit should have its own dedicated
circulating pump and safety controls which must be
installed as per the manufacturer’s instructions.
INSTALLATION - SOLAR PRIMARY
CONTROL OF SOLAR PRIMARY CIRCUIT
Temperature control of the POTTERTON GOLD
SOLAR cylinder must be carried out using a suitable
proprietory Solar Controller/Programmer. The cylinder
temperature sensing probe (supplied with the solar
controller) should be fully inserted into the pocket
provided on the POTTERTON GOLD SOLAR cylinder
and its cable secured using the cable clamps on the
controls housing ( see Fig. 8 ).
Connection to the solar controller should be in
accordance with the manufacturers instructions.
The solar controller should be programmed to give a
cylinder temperature of approximately 60° (maximum
70°C ).
Fig. 8: Solar Control Connections
The solar controller and solar primary circulation
pump must be wired via the over-temperature cut-
out mounted in the lower solar controls housing.
This will ensure that the heat input to the solar coil is
interrupted in the event of the cylinder over-heating.
There must also be suitable check (non-return) valves
installed in the solar primary flow and return to
prevent the possibility of any thermo-syphoning if the
solar circulation is stopped.