13
COMMISSIONING
At the time of commissioning, please ensure all
relevant sections of the Benchmark Checklist, (Page
22 and 23) of this document, are completed.
FILLING THE UNIT WITH WATER
Check expansion vessel pre-charge pressure.
•
The vessel is supplied precharged to 3.5
bar to match the control pressure of the
pressure reducing valve. The precharge
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 PremierPlus
•
cylinder.
Open the PremierPlus 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.
SYSTEM CHECKS
Check all water connections for leaks and rectify
•
as necessary.
Turn off PremierPlus water supply.
•
Remove the pressure reducing valve head work
•
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.
•
DIRECT UNITS
Switch on electrical supply to the immersion heater(s)
and allow the cylinder to heat up to normal working
temperature (60ºC recommended, approximately
graduation 4 on the thermostat). 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 1 to 5 represents a temperature
range of 10° to 70°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.
INDIRECT UNITS
Fill the indirect (primary) circuit following the boiler
manufacturer’s commissioning instructions. To ensure
the PremierPlus cylinder primary heat exchanger is
filled, the 2 port motorised valve (supplied) should be
manually opened by moving the lever on the motor
housing to the MANUAL setting. When the primary
circuit is full return the lever to the AUTOMATIC
position. Switch on the boiler, ensure the programmer
is set to Domestic Hot Water and allow the PremierPlus
cylinder to heat up to a normal working temperature
(60°C recommended, approximately graduation 4 on
the thermostat). 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.11, page 13) and rotating.
The minimum thermostat setting is 10°C.
The adjustment range 1 to 5 represents a temperature
range of 30° to 70°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.
Thermal cut-out
reset button
Thermostat
adjustment
Thermostat
Terminal
block
Cable
clamps
Thermal
cut-out
NOTE: The housing cover and element assembly have been
removed from this view for clarity
Fig. 11: Indirect thermostat and thermal cutout