Screw
Pump
Automatic Air
Vent
Fig. 63 | Pump | 2 |
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1 |
| 3 |
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| 0 |
| 4 |
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| bar |
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Selector Switch |
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| Display | Fig. 64 |
| Pressure Gauge | ||||
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| 2 |
| 1 | 12 |
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| 3 |
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| 11 |
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| 4 |
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| 10 |
Reset |
| 2 |
| 5 |
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| 9 |
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| PM |
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| 3 |
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| 8 | |
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| 7 |
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| 7 | |
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| 8 |
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| AM |
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| 0 | 4 | 9 |
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| 0 | 5 |
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| bar |
| 10 |
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| 4 |
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| 11 |
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| 3 |
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| 12 | 1 |
| 2 |
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| Central Heating | Domestic Hot Water |
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| Temperature Control | Temperature Control |
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Fig. 65
11.0Commissioning
11.1Commissioning the Boiler
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.Open the mains water supply to the boiler.
4.Open all hot water taps to purge the DHW system.
5.Ensure that the filling loop is connected and open, then open the heating flow and return valves on the boiler.
6.Open the screw on the automatic air vent on the pump body (Fig. 63).
7.The system must be flushed in accordance with BS 7593 (see Section 6.2) and the flushing agent manufacturers instructions.
8.Pressurise the system to 1.5 bar (Fig. 64) then close and disconnect the filling loop.
9.Turn the gas supply on and purge according to in GB BS 6891 and in IE I.S. 813 “Domestic Gas Installations”.
10.Test for gas tightness.
11.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.
12. 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:
36© Baxi Heating UK Ltd 2012
