Technical data

11
6.0 COMMISSIONING
6.1 FILLING THE UNIT WITH WATER
• Check Expansion Vessel pre-charge pressure. The
vessel is supplied pre-charged to 3.5 bar to match the
control 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 con-
nection.
• 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 Premier
Plus.
• Open the mains stop cock to ll the unit. When
water ows from the tap, allow to run for a few min-
utes to thoroughly ush through any residue, dirt or
swarf, then close the tap.
• Open successive hot taps to purge the system of
air.
6.2 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-t.
• 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.
6.3 DIRECT UNITS
Switch on electrical supply to the immersion heater(s)
and allow the Premier Plus to heat up to normal work-
ing temperature (60ºC recommended, approximately
graduation 4 on the thermostat). If necessary the
temperature can be adjusted by inserting a at bladed
screwdriver in the adjustment knob on top of the im-
mersion heater thermostat and rotating. The adjust-
ment range 1 to 5 represents a temperature range of
10
o
to 70
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.
6.4 INDIRECT UNITS
Fill the indirect (primary) circuit following the boiler
manufacturer’s commissioning instructions. To ensure
the Premier Plus primary heat exchanger is lled, 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 primary
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 to heat up to a normal working temperature
FIG. 9 Indirect thermostat and thermal cut-
out
(60
o
C recommended, approximately graduation 4
on the thermostat). If necessary the temperature can
be adjusted by inserting a at bladed screwdriver in
the adjustment knob (located on top of the thermo-
stat mounting bracket - see Fig.9) and rotating. The
minimum thermostat setting is 10
o
C. The adjustment
range 1 to 5 represents a temperature range of 30
o
to
70
o
C. Check the operation of the indirect thermostat
and 2 port motorised valve and that no water has is-
sued from the Expansion Relief Valve or Temperature/
PressureRelief Valve during the heating cycle.
6.5 BENCHMARK
TM
LOG BOOK
On completion of the installation and commissioning
of the Premier Plus the Benchmark
TM
“Installation,
Commissioning and Service Record Log Book”
should be completed and signed off by the competent
installer or commissioning engineer in the relevant
sections.
The various system features, location of system con-
trols, 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 Bench-
mark
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 lled out when any subsequent service
or maintenance operation is carried out on the Premier
Plus system.
CABLE CLAMPS
TERMINAL BLOCK
INDIRECT
THERMOSTAT
THERMOSTAT
ADJUSTMENT
INDIRECT
THERMAL
CUT-OUT
INDIRECT THERMAL
CUT-OUT RESET
BUTTON
NOTE:
THE HOUSING COVER AND ELEMENT ASSEMBLY
HAVE BEEN REMOVED FROM THIS VIEW FOR
CLARITY