Potterton Ultra 2, Инструкция по установке и обслуживанию

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Commissioning - Page 34
3.2 Check the Water System
1. When the system has been tested, ensure that the boiler is turned off. Drain the water while it is still hot, in order to
complete the flushing process.
2. Where the boiler is used on an old system, special care is required. The system should be drained and flushed out,
ensuring that all the radiators are drained. Also check the radiator valves.
3. In areas with hard or aggressive water, we recommend that an inhibitor, suitable for use with copper tube boilers,
should be used in accordance with the manufacturers instructions.
4. Refill, vent the system, boiler and pump.
5. Pressurise the system to 1.5 bar and check for leaks, rectifying where necessary.
6. The Boiler Thermostat is factory set & sealed, this MUST NOT be tampered with.
3.3 Balance the System
1. Fully open all the radiator lock shield valves and set any thermostatic radiator valves to maximum.
2. With the electricity supply on and the test switch set to 'Override', turn the thermostat knob fully clockwise to light the
boiler.
3. Balance the system using the radiator lock shield valves to give a temperature drop of 10°C across the individual
radiators - start with the radiator nearest to the boiler.
4. Turn the thermostat knob fully anti-clockwise to turn the boiler off.
5. Set the test switch to 'Normal' if a programmer or external controls are used.
3.4 Complete the Boiler
1. Hook the base plate onto the rear of the chassis and secure at the front using the screw previously removed.
2. On rear/vertical/vertex flues locate the white case side(s) and secure to the front of the boiler using the screws
previously removed.
3. Hook the white front case on at the top of the boiler, position so the ball studs align with the holes in the white case
sides and push firmly to engage them.
4. Locate the facia assembly onto the front of the boiler and secure to the white case sides using the two countersunk
screws previously removed.
3.5 Light the Boiler
If a programmer is fitted refer to the Instructions for Use on how to set the programmer.
Do not attempt to light the boiler if the system pressure is less than 0.5 bar. Pressurise the system to 1.5 bar and check for
leaks, rectifying where necessary. Adjust the pressure down to 0.8 bar.
With the gas supply on and the electricity supply off.
1.
Turn the thermostat knob fully anti-clockwise to 0 (Off).
2. Switch on the electricity supply, set the programmer to continuous, if a programmer is fitted and check that all system
controls are calling for heat.
3. Turn the thermostat knob fully clockwise to maximum. The automatic ignition sequence will commence. The fan will
start and after a short purge period a click will be heard indicating that the start gas solenoid has opened, the ignition
sparks will also be heard. The pilot will light and after a second or so the main gas solenoid will open and the main
burner will light.
A green neon, positioned on the facia, will light whenever the main burner is alight.
Note: The pilot burner is turned off every time the main burner is off. The ignition sequence is automatically activated
when the boiler thermostat requires heat.
4. If a programmer is fitted, ensure that the timer is set to the correct time and the programme is set to the required
settings. Ensure that the test switch is set to 'Normal'.