Commissioning - Baxi Megaflo System HE A Range Installation & Servicing Instructions Manual

Pump
Fig. 49
Selector Switch
Display
Central Heating
Temperature Control
Fig. 51
34
© Baxi Heating UK Ltd 2013
Screw
Pump
Automatic Air
Vent
2
1
0 4
bar
Fig. 50
2
1
3
0 4
bar
Calibration Control

11.0 Commissioning

11.1
1. Reference should be made to BS:EN 12828 & 14336 when
commissioning the boiler.
2. At the time of commissioning, complete all relevant
sections of the Benchmark Checklist at the rear of this
publications.
3. Ensure that the filling loop is connected and open, then
open the heating flow and return valves on the boiler.
4. Open the screw on the automatic air vent on the pump
body (Fig. 49).
IMPORTANT: If the boiler is installed at a high point in
the system it is strongly recommended that Automatic Air
Vent Kit 720004701 is fitted. Ensure that this vent is open.
5. The system must be flushed in accordance with BS 7593
(see Section 6.2) and the flushing agent manufacturers
instructions.
6. Pressurise the system to 1.5 bar then close and disconnect
the filling loop.
3
7. Turn the gas supply on and purge the system according to
in GB BS 6891 and in IE I.S. 813 "Domestic Gas Installations".
Pressure Gauge
8. Test for gas tightness.
9. Hinge the facia panel upwards and refit the case front
panel. Tighten the securing screws.
IMPORTANT: The combustion for this appliance has
been checked, adjusted and preset at the factory for
operation on the gas type specified on the appliance data
plate. No measurement of the combustion is necessary.
Do not adjust the air/gas ratio valve.
10. Having checked:
• That the boiler has been installed in accordance with
these instructions.
• The integrity of the flue system and the flue seals.
• The integrity of the boiler combustion circuit and the
relevant seals.
Proceed to put the boiler into operation as follows:
Commissioning the Boiler