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5.3.1.2 Ignite the appliance burner by switching on the electrical supply to the appliance and check that the manometer
reading is as stated below, for the gas type the appliance is adjusted for (see Data Label affixed to the appliance
adjacent to controls.
Category 2H: gas type G20 (natural): supply pressure
20mbar (nom)
17mbar (min)
25mbar (max)
Category 3P: gas type G31 (propane): supply pressure
50mbar (nom)
57.5mbar (min)
42.5mbar (max)
5.3.1.3 Switch off the electrical supply to the appliance and remove the manometer tube from the Control Valve test nipple
marked 'IN'. Screw in the test nipple sealing screw.
5.3.2
To check the burner setting pressure
:
5.3.2.1 Unscrew the sealing screw (2 turns) of the Control Valve test nipple marked 'OUT' and connect a manometer to this
test nipple.
5.3.2.2 Ignite the burner by switching on the electrical supply to the appliance and check that the manometer reading is as
stated below, for the gas type the appliance is adjusted for (see Data Label, affixed to the appliance adjacent to the
Controls.
Category 2H: gas type G20 (natural): setting pressure -
Ultra 7 & Ultra 7/3.5
- 19.0mbar
Ultra 14 & Ultra 14/7
- 18.8mbar
Ultra 21 & Ultra 21/10.5
- 18.7mbar
Ultra 28 & Ultra 28/14
- 18.2mbar
Ultra 42 & Ultra 42/21
- 17.5mbar
Category 3P: gas type G31 (propane): setting pressure -
Ultra 7 & Ultra 7/3.5
- 50.0mbar
Ultra 14 & Ultra 14/7
- 50.0mbar
Ultra 21 & Ultra 21/10.5
- 50.0mbar
Ultra 28 & Ultra 28/14
- 50.0mbar
Ultra 42 & Ultra 42/21
- 50.0mbar
5.3.2.3 In the event that the burner setting pressure is incorrect remove the cap from the integral pressure governor of the
control valve. Adjust the pressure (using a suitable screwdriver) by turning the pressure governor adjusting screw
clockwise to increase, or anti-clockwise to decrease the burner setting pressure.
5.3.2.4 Upon obtaining the correct burner setting pressure, switch off the electrical supply to the Appliance, remove the
manometer tube from the control valve test nipple marked 'OUT' and screw in the test nipple sealing screw.
Replace the cap on the integral pressure governor of the control valve.
5.4
Flame Supervision
.
5.4.1
To check the operation of the flame supervision equipment, run the appliance normally, remove the flame sensor
(grey) lead from the ignition control by gently pulling the connector using insulated pliers. Observe that the burner
flame is extinguished within 1 second.
5.4.2
After a 'waiting time' of 1 second, the solenoid valves and the ignition spark electrode will be re-energised and with
the flame sensor lead still disconnected, the Ignition Control will go to 'lockout condition' after a further 25 seconds.
5.4.3
Switch off the electrical supply to the appliance and reconnect the flame sensor lead to the ignition control.
NOTE: an ionisation current equal to or greater than 0.9µA (On/Off) or 0.4µA (Hi/Lo) is required to maintain the
operation of the appliance.
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