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Baxi Potterton Performa 24 Eco HE 11.0 Commissioning the Boiler

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11.0 Commissioning the Boiler

33

© Baxi Heating UK Ltd 2009

OUT

MIN

Pressure Test Point

Sealing Screw

Gas Valve

Fig. 48

11.2 Checking the Burner Pressure

1. Turn on the gas and electrical supplies to the boiler

and ensure that all external controls are calling for

heat.

2. Set the temperature controls to maximum and the

selector switch to the Off position (Fig. 51).

3. Slacken the pressure test point sealing screw on the

gas valve and connect a pressure gauge (Fig. 48).

4. Undo the screws securing the inner door panel. Lift

the panel slightly to disengage it from the studs on top

of the case.

5. Turn the selector switch fully anticlockwise against

the spring pressure to the reset position and hold for

2 seconds to reset the boiler (Fig. 51).

6. Turn the selector switch to the Cental Heating and

Domestic Hot Water position ( ). The power On

neon ( ) will illuminate (Fig. 51).

7. Turn a hot water tap on to give a flow rate of at

least 10l/min.

8. The pressure should be :-

NG 10.2mbar

Propane 21.8mbar

If not, check that the gas supply pressure is correct

(Natural Gas 20mbar, and Propane 37mbar).

9. The pressure can be adjusted if required.

10. To check and set minimum pressure first remove

one of the modulator wires.

Adjusting the Pressure(Fig 49)

11. Remove the plastic protection cap from the

pressure adjustment nuts on the valve.

12. The smaller nut (5mm) adjusts minimum pressure

and the larger nut (8mm) maximum pressure.

13. Using a suitable spanner adjust the relevant nut

until the correct pressure is achieved.

14. Once the pressure has been set turn the boiler off

and disconnect the pressure gauge.

15. Tighten the pressure test screw and refit the

modulator to the valve. Reassemble in reverse order.

Fig. 49

Plastic

Protection

Cap

Modulator

Wire Maximum Rate

Adjustment Nut

Minimum Rate

Adjustment Nut

NOTE:Gas Valve Electrical

Plug/Igniter not shown for clarity.

Fig. 51

Pressure Gauge

bar

0

1

2

3

4

Fig. 50

Selector Switch

Central Heating

Temperature Control

Hot Water

Temperature Control

Reset Burner On

Flame Failure

Power On

bar

0

1

2

3

4

Power On

Neon

Contents

Main 2 Natural Gas Building Regulations and the Benchmark Commissioning Checklist Contents ISO 9001 FM 00866 Installer Notification Guidelines Legislation Codes of Practice, most recent version should be used IMPORTANT - Installation, Commissioning, Service & Repair Safe Manual Handling 1.1 Description 1.2 Contents of Pack 1.0 Introduction 2.0 General Layout 2.1 Layout 3.0 Appliance Operation 3.1 Central Heating Mode (Fig. 2) 3.2 Domestic Hot Water Mode (Fig. 3) 4.0 Technical Data Pump - Available Head 5.0 Dimensions and Fixings Dimensions 6.1 Information 6.2 Central Heating Circuit 6.3 Bypass 1. The boiler is fitted with an automatic integral bypass. 6.4 System Control 12 6.5 System Filling and Pressurising 6.6 Expansion Vessel (Central Heating only) 6.7 Safety Pressure Relief Valve (Fig. 6) 6.8 Domestic Hot Water Circuit (Fig. 7) 6.9 Showers 6.10 Hard Water Areas 14 7.1 Location 7.2 Clearances (Figs. 8 & 9) 7.3 Ventilation of Compartments 7.4 Gas Supply 7.5 Electrical Supply 16 7.6 Condensate Drain Termination to an internal soil and vent pipe External termination via internal discharge branch e.g sink waste - downstream External termination to a drain or gully External termination to a purpose made soak-away Page 18 Horizontal Flues This bend is equivalent to 1 metre Total equivalent length (up to 3m) = A+B+C+2x90Bends B AC This bend is equivalent to 1 metre 8.1 Horizontal Flue Systems The total equivalent length for this example is = 6.5 metres. Y B A C 20 8.3 Flue Accessories 8.4 Flue Duct Adaptor 8.5 Air duct adaptor 22 8.6 For Roof Terminals 8.7 Flue Dimensions 8.8 Flue Trim 8.9 Terminal Guard (Fig. 14) 9.1 Plume Displacement Kit (Fig. 14b) 24 X Y 9.2 Determining Permissible Lengths 50mm 30mm 9.3 General Fitting Notes 26 9.3 General Fitting Notes (cont.) 30mm 70 10.1 Initial Preparation 10.2 Flushing 10.3 Preparing The Boiler 28 10.4 Fitting The Boiler 10.5 Fitting the Safety Pressure Relief Discharge Pipe (Fig. 33) 10.6 Condensate Drain (see section 7.6) 10.7 Fitting The Flue 30 10.7 Fitting the Flue (Cont) 10.8 Making The Electrical Connections 10.9 Preliminary Electrical Checks 11.0 Commissioning the Boiler 32 11.1 Commissioning the Boiler 11.0 Commissioning the Boiler 11.2 Checking the Burner Pressure 12.0 Completion 34 12.1 Completion 13.0 Servicing the Boiler 13 .1 Annual Servicing 13.0 Servicing the Boiler 36 13.1 Annual Servicing (Cont) 14.1 Fan (Figs. 62 & 63) 14.2 Pressure Switch (Fig. 61) 38 14.3 Heat Exchanger (Fig. 64) 14.4 Burner (Fig. 65) 14.5 Injectors (Fig. 66) 14.6 Electrodes (Fig. 66) 13.8 14.7 Insulation (Fig. 67) 40 14.8 Gas Valve (Fig. 68) 14.9 Temperature Sensor (Fig. 69) 14.10 Safety Thermostat (Fig. 69) 14.11 Pump - Head Only (Fig. 71) 14.12 Pump - Complete (Fig. 73) 14.13 Automatic Air Vent (Fig. 73) 42 14.14 Pressure Gauge (Figs. 74 & 75) 14.15 Expansion Vessel (Fig. 76) 14.16 Condensate Trap (Fig. 77) 14.17 Pressure Relief Valve (Fig. 78) 14.18 P.C.B. (Fig. 80) 14.19 Selector Switch (Fig. 80) 44 14.20 Plate Heat Exchanger (Fig. 67) 14.21 Diverter Valve Assembly (Figs. 82 & 83) 14.21 Diverter Valve Assembly (Cont) 14.22 Flow Regulator (Figs. 85 & 86) 46 14.23 Secondary Heat Exchanger (Fig. 87) 14.24 Flue Overheat Thermostat (Fig. 88) 15.0 Illustrated Wiring Diagram Control PCB br - brown bk - black b - blue r - red y - yellow g/y- green / yellow w - white gr - grey Page Page Fault Finding Solutions Sections A to F A B F D C G Fault Finding Solutions Sections G to L H K I A B E C D 18.0 Short Parts List GAS BOILER SYSTEM COMMISSIONING CHECKLIST CONTROLS ALL SYSTEMS CENTRAL HEATING MODE COMBINATION BOILERS ONLY SERVICE RECORD Service Provider SERVICE 1 SERVICE 3 SERVICE 5