19Mexico Super RS 3/60P - 3/100P - InstallationINSTALLATION25 INITIAL LIGHTING1. Turn the gas service cock to OFF and undo the unionnut.2. Remove the 4 wing nuts and withdraw the burner andcontrols assembly, complete, from the boiler.3. Invert the burner assembly and reconnect to the gasservice cock.4. Turn the gas service cock to ON.5. Light the pilot burner. Refer to Frame 25.6. Test for gas soundness around the pilot burnerconnection, using leak detection fluid.7. Turn the gas service cock to OFF and return theburner and controls assembly to the normal workingposition.INSTALLATION26 PILOT BURNER CONNECTION GAS SOUNDNESSLEGENDA Gas control knobB Burner pressure test pointC Main burner pressureadjusterD Inlet pressure test pointE Gas service cockF SightglassG Piezo unit ignitionH Boiler thermostat knobJ Overheat thermostat resetbutton (optional)1. Connect the gas valve electrical leads and refit the cover.2. Check that the gas service cock (E) is ON and that the boilerthermostat control knob (H) is OFF.3. Loosen the screw in the burner pressure test point (B) andconnect a gas pressure gauge via a flexible tube.4. Turn the gas control knob (A) CLOCKWISE until resistanceis felt and then release it.5. Push in and retain fully depressed the gas control knob (A).Press and release the piezo unit button (G) repeatedly untilthe pilot is seen to light through the sightglass (F).6. Hold the gas control knob (A) depressed for 15 secondsafter the pilot burner has ignited, then release.If the pilot burner fails to remain alight at this stage, repeatthe procedure detailed above but wait longer than 15seconds before releasing the gas control knob (A).7. Check the appearance of the pilot flame to ensure that itenvelops the tip of the thermocouple and is approximately25mm (1") long. The pilot flame is factory set and noadjustment is possible.8. Switch the boiler thermostat control knob (H ) to position 6and check that the burner cross-lights smoothly from thepilot flame.9. Test for gas soundness around the boiler gas componentjoints, using leak detection fluid.10. Operate the boiler for 10 minutes to stabilise the burnertemperature. The boiler is pre-set at the factory to itsmaximum nominal rating11. Turn the boiler thermostat knob (H) to OFF.12. Remove the pressure gauge and tube. Retighten the screwin the pressure test point, ensuring that a gas-tight seal ismade.RS 3/60P Burner / controls assembly shown