Benchmark POTTERTON Gold, Инструкция по установке и обслуживанию, Страница: 12 / 24

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At the time of commissioning, please ensure all relevant
sections of the Benchmark Checklist, ( Page 20 and 21 )
of this document, are completed.
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 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 POTTERTON
GOLD SOLAR cylinder.
•
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.
SYSTEM CHECKS
•
Check all water connections for leaks and rectify
as necessary.
Turn off mains water supply. •
•
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.
SOLAR PRIMARY CIRCUIT
Fill the solar primary circuit following the instructions
provided with the solar hydraulic controls. The
cylinder temperature 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
manufacturer’s 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 POTTERTON
GOLD SOLAR cylinder of 70
o
C, (60
o
C is recommended
to minimise scaling).
COMMISSIONING
SECONDARY HEATING COIL
Fill the indirect secondary circuit following the boiler
manufacturer’s commissioning instructions. To ensure
the POTTERTON GOLD SOLAR cylinder 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
MANUAL position. Switch on the boiler, ensure the
programmer is set to Domestic Hot Water and allow
the POTTERTON GOLD SOLAR cylinder to heat up to
a normal working temperature (60
o
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) and rotating. The minimum
thermostat setting is 10
o
C. The adjustment range 1 to
5 represents a temperature range of 30 to 70
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.
DIRECT UNITS
Switch on electrical supply to the immersion
heater(s) and allow the POTTERTON GOLD SOLAR to
heat up to normal working temperature (60ºC recom-
mended, approximately graduation 4 on the thermo-
stat). 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 tempera
ture 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.
Fig. 11: Indirect thermostat and thermal cut-out