Vaillant ecoMAX pro 18E, Instructions For Use Installation And Servicing

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Instructions for Use, Installation and Servicing ecoMAX pro
20
12 Commissioning
Please ensure the “Benchmark” service record is
completed and left with the user.
Note!
During commissioning the overheat thermostat
may trip before air is completely removed from
the system. If this occurs the boiler can be reset
by pushing the manual reset button on the
overheat thermostat (see fig 12.1).
12.1 Preliminaries - All Systems
A competent person should carry out commissioning, in
accordance with the current issue of BS 6798.
Make sure that the system has been thoroughly flushed
out with cold water.
Refill the system with water, making sure that all the air
is properly vented from the system and pump, fig 12.1
shows vent point.
Before operating the boiler check that all external
controls are calling for heat.
12.2 Sealed Systems
Fill the system until the pressure gauge registers the
recommended pressure. Clear any air locks and check
for leaks.
Check the operation of the safety valve, preferably by
allowing the water pressure to rise until the valve lifts.
This should be within ± 0.14 bar, of the preset pressure.
Where this is not possible a manual check should be
carried out.
Release the cold water to the initial design pressure.
12.3 Gas supply
Isolate the boiler from the mains electrical supply.
The complete gas installation including the gas meter
must be isolated, tested for soundness and purged in
accordance with BS 6891, in IE the current edition of
IS 813.
The gas supply to the boiler can be purged by
slackening the gas service union connection beneath
the boiler. Ensure that there is adequate ventilation,
extinguish all naked flames and do not smoke whilst
purging.
After purging, the gas service union connection must
be re tightened and tested for soundness. (The boiler
itself does not require purging as this will be done by the
automatic burner sequence control).
The gas valve is factory set for natural gas (G20) and
should need no adjustment. (LPG G31 ecoMax pro 28E
only) should be adjusted as described Section 13 Natural
gas to LPG conversion. It should be checked that the
supply pressure is 20mb when the boiler is firing at full
rate. This can be achieved by checking the inlet pressure
at the pressure test point on the gas valve shown in fig
12.2.
Caution!
Before operating the boiler check the data
badge and ensure that the correct gas type
appliance has been installed.
PRESSURE TEST
POINT
ELECTRICAL
PLUG
GAS CONTROL
VALVE
THROTTLE
OFFSET
ADJUSTMENT
Fig 12.2
12701
VENT POINT
FLOW
PIPE
OVERHEAT
THERMOSTAT
FLOW
THERMISTOR
RETURN
THERMISTOR
Fig 12.1
12700