Commissioning - Benchmark PulsaCoil A-Class 145 Design, Installation And Servicing Instructions

2.3 COMMISSIONING

Open the incoming stop valve and fill the domestic mains cold and hot water systems
A-CLASS
including the PulsaCoil
Check the water level in the top up cistern and if a ballvalve is fitted adjust if
necessary.
Check the whole of the domestic hot and cold distribution systems for leaks. Fully
flush and if necessary chlorinate the hot and cold water system in accordance with
the recommendations in the Water Regulations and BS 6700.
Please note that the whole of the domestic hot and cold water systems including the
appliance must be adequately flushed after chlorination. Failure to do this can cause
damage to the plate heat exchanger/immersion heaters etc. If there are any doubts
regarding this or the quality of the water being used to fill the PulsaCoil appliance an
inhibitor such as Fernox MBI or Sentinel X100 should be added to the appliance when
filling in line with the manufacturers instruction for these products.
Check that the top up tank is filled up to the water level shown on the label. If it is a
manual fill model, this is most important.
If a ballvalve is provided,turn down the servicing valve once the system is finally
filled to the point where the warning/overflow pipe will cope with the discharge
arising from a ballvalve failure.
If an overflow is not provided ensure the temporary filling hose is isolated and
removed from its connection to the cold water supply.
It is essential that all systems function properly for optimum performance.
To achieve this the flow rate from each tap should be checked and a suitable number
of taps run simultaneously to check the impact of this on the flow rate at individual
taps.
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We recommend that flow regulators are provided for each tap/terminal fitting
to ensure that the available flow is shared evenly - See Appendix A for further
details.
Commissioning the PulsaCoil Control System
A-CLASS
Once the PulsaCoil is filled with water, check the on/off switch on the front is
in the off position. The electrical supplies can then be switched on and the switches
on the two isolating terminal connectors can be pushed home.
WARNING - Pushing home these switches will complete the electrical circuit to the
immersion heaters. DO NOT PUSH HOME THESE SWITCHES AND SWITCH ON THE
ELECTRICITY SUPPLY UNTIL YOU HAVE CHECKED THAT THERE IS WATER IN THE
F & E CISTERN . Failure to do this can result in dry firing and premature failure of the
immersion heaters, which will invalidate the warranty.
appliance.
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2.0 INSTALLATION
Put the on/off switch on the front control
panel to the on position to activate the
appliance control board.The switch will glow
green when in the on position.
If an off peak supply is not available the on-
peak boost immersion heater will need to be
switched on by pressing the black button.The
red light will change to permanently on.
It can be checked that the boost immersion
heater is drawing current by use of a clamp
meter on the live supply when boost is active
or by interrogating the printed circuit control
board in accordance with the instructions in
the fault finding section of this manual.
The immersion heater will switch off
automatically once its control sensor reaches
70°C.
The boost immersion heater can be switched
off by pressing again the black button.
If an off peak supply is available at the time
the appliance is switched on the appliance
will automatically switch on the off peak
immersion heater. Its operation can be
checked in the same way as described above
for the on peak immersion heater. When
the off peak supply is available the on peak
immersion heater operation can still be
checked as described above by switching off
the off peak supply.
Note:
If the on and off peak supplies have been
connected wrongly ("crossed") attheappliance
it will not operate properly (it may charge if
off peak is available but will not carry out any
other operations)
If the appliances has been connected with the
polarity incorrect it will not operate at all.
See the fault finding section of the manual for
further details.
Run a tap and using a digital thermometer
check that the temperature of the hot water
is about 52°C. This temperature is factory set
and is independent of the store temperature
assuming the store is above 55°C and typical
hot water flow rates of 6-25l/min are being
drawn.
This product is covered by the'Benchmark'
scheme and a separate commissioning/
service log book is included with this
product. This must be completed during
commissioning and left with the product
to meet the Warranty conditions offered
by Gledhill.
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