Santon PREMIER PLUS, Installation And Servicing Instructions, Page: 16 / 28

7.0 COMMISSIONING
7.1 FILLING THE UNIT WITH WATER
•
Check Expansion Vessel pre-charge pressure. The vessel is supplied pre-charged to 3.5 bar to match the con-
trol pressure of the Pressure Reducing Valve. The pre-charge pressure is checked using a car tyre gauge by
unscrewing the plastic cap opposite the water connection.
•
Check all connections for tightness including the immersion heater(s). An immersion heater key spanner is
supplied for this purpose.
•
Ensure the drain cock is
CLOSED.
•
Open a hot tap furthest from the Santon PremierPlus solar.
•
Open the mains stop cock to fill the unit. When water flows from the tap, allow to run for a few minutes to
thoroughly flush through any residue, dirt or swarf, then close the tap.
•
Open successive hot taps to purge the system of air.
7.2 SYSTEM CHECKS
•
Check all water connections for leaks and rectify as necessary.
•
Remove the Pressure Reducing Valve headwork to access the strainer mesh, clean and re-fit.
•
Manually open, for a few seconds, each relief valve in turn, checking that water is discharged and runs freely
through the tundish and out at the discharge point.
•
Ensure that the valve(s) reseat satisfactorily.
7.3 SOLAR PRIMARY CIRCUIT
Fill the solar primary circuit following the instructions provided with the solar hydraulic controls. The cylinder tem-
perature control probe supplied with the solar controller must be fully inserted into the pocket in the lower controls
housing and the cable securely clamped. Heating by the solar primary circuit is controlled by the solar controller,
refer to the manufacturers installation instructions for details of how to set up and connect the solar primary circuit.
The solar controller should be programmed to give a maximum storage temperature in the PremierPlus solar of
70
o
C, 60
o
C is recommended to minimise scaling.
7.4 DIRECT UNITS
Switch on electrical supply to the immersion heater(s) and allow the PremierPlus solar to heat up to normal working
temperature (60ºC recommended, see Fig 7, page 11 for adjustment details). If necessary the temperature can be
adjusted by inserting a flat bladed screwdriver in the adjustment knob on top of the immersion heater thermostat
and rotating.
The adjustment range on the spindle represents a temperature range of 10
o
to 72
o
C. Check the operation of
thermostat(s) and that no water has issued from the expansion relief valve or temperature/pressure relief valve
during the heating cycle.
7.5 Secondary Heating Coil
Fill the indirect secondary circuit following the boiler manufacturer’s commissioning instructions. To ensure the
PremierPlus solar auxillary heat exchanger is filled, the 2 port motorised valve (supplied) should be manually opened
by moving the lever on the motor housing to the FLUSHING ONLY setting. When the circuit is full return the lever
to the NORMAL USE position. Switch on the boiler, ensure the programmer is set to Domestic Hot Water and allow
the Premier Plus Solar to heat up to a normal working temperature (60
o
C recommended, see Fig 7 for adjustment
details). If necessary the temperature can be adjusted by inserting a flat bladed screwdriver in the adjustment knob
(located on top of the thermostat mounting bracket - see Fig.7, page 11) and rotating. The minimum thermostat
setting is 10
o
C. The adjustment range on the spindle represents a temperature range of 10
o
to 72
o
C. Check the
operation of the indirect thermostat and 2 port motorised valve and that no water has issued from the expansion
relief valve or temperature/pressure relief valve during the heating cycle.
7.6 BENCHMARK
TM
LOG BOOK
On completion of the installation and commissioning of the PremierPlus solar the Benchmark
TM
“Installation, Com-
missioning and Service Record Log Book” should be completed and signed off by the competent installer or com-
missioning engineer in the relevant sections.
The various system features, location of system controls, user instructions and what to do in the event of a system
failure should be explained to the customer. The customer should then countersign the Benchmark
TM
log book to
accept completion.
The log book should be left with the customer along with these instructions. The log book includes sections that
should be filled out when any subsequent service or maintenance operation is carried out on the Premier Plus
system.