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5
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20
7.5
Injector
7.5.1
Using a 7/16
˝
A/F spanner, unscrew the injector(s) from the manifold
7.6
Twin Solenoid Control Valve (Direct Burner Spark Ignition)
7.6.1
Remove the ignition control (see section 7.3 & 7.4) and disconnect the gas supply pipe from the control valve
by unscrewing the four M4 screws securing the straight flange connector to the control valve inlet port.
7.6.2
Disconnect the electrical supply to the appliance by unscrewing the M3 screw securing the electrical
supply socket to the 4-pin plug attached to the junction box (secured to the control valve).
7.6.3
Unscrew the four M4 screws securing the elbow flange connector to the control valve outlet port and lift off the
control valve.
7.6.4
To remove the electrical junction box from the control valve first slacken the gland located in the junction box,
below the control valve. Unscrew the four screws securing the cover of the junction box and carefully lift away
the cover. Unscrew the two screws securing the junction box to the control valve and remove the junction box
complete.
7.6.5
When assembling a replacement control valve, ensure that the 'O' rings, located in the elbow flange and
straight flange connectors are in sound condition and correctly positioned in the 'O' ring grooves of the
connectors.
7.7
Reverberatory Screen
7.7.1
Remove the wire ties from the Centre Screen Support (ERP20/30/40/45 only).
7.7.2. Remove the split pins from the Screen Retaining Rails.
7.7.3. Slide the Reverb. Screen Assembly away from the manifold until the Screen Retaining Rails are free of the slots
in the Frame Side Panel at the manifold end.
7.7.4. Drop the Reverb. Screen Assembly at the manifold end and slide the Screen Retaining Rails out of the slots in
the Frame Side Panel furthest from the manifold.
7.7.5. Remove the wire ties from the Screen Retaining Rails and remove the rails from the screen.
7.8.
Burner Assembly
7.8.1. Remove the Ignition Electrode and Flame Sensor from the Side Frame Panel-RH (see sections 7.1. and 7.2.
above).
7.8.2. Unscrew the qty. 4 self tapping screws securing the burner Hanger Bracket to the top of the Side Frame Panels
and slide the Burner Assembly away from the manifold to disengage the Venturi from the Side Frame Panels.
Lift the Burner Assembly clear of the frame.
7.8.3.
Important:
when assembling new burner assemblies, the Burner Assembly - Ignition Unit (Part No. 4 )
must
be positioned adjacent to the Side Frame Panel-RH, containing the Spark Electrode and Flame Sensor.