15. Commissioning
•Remove the front panel of the case.
•Unscrew the cap on the automatic air purger valve 3 (Fig 15.1) one full turn and leave open permanently.
3
2
Figure 15.1
•Open the installer supplied automatic fill valve between the cold water inlet and Central Heating System (See 28 on piping diagrams in previous section).
15.1Initial filling of the system:
•Open each radiator
air vent starting at the lower point and close it only when clear water, free of bubbles, flows out.
•Purge the air from the pump by unscrewing the pump plug 2 (Fig. 15.2); release the pump by turning the rotor in the direction indicated by the arrow on the information plate.
2
figura 15.2
• Close the pump plug.
•Continue filling the system. The actual reading should ideally be 1.3 bar (19 psi) and not less than 0.3 bar (4.3 psi).
•Close all air release valves on the c.h. system.
•Inspect the boiler and the system for water soundness and remedy any leaks discovered.
•Cold flush the system to remove any loose particles and any system debris before starting the boiler for the first time.
•Reassemble the front panel of the case.
•Return fill valve to automatic position.
| 15.2 Lighting the boiler: |
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Note: If external controls are fitted (e.g. room thermostat) ensure they "call for heat". |
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• Turn on the electricity | seconds. | A | B C D |
supply to the boiler, | • Turn the function |
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switching on the circuit | selector B as in Fig. |
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breaker switch. The | 15.3. The appliance |
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appliance operation | operation light A will | Figure 15.3 |
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light A will flash every 4 | flash every 2 seconds. |
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The boiler will now go through an ignition sequence and the burner will light.
If during the ignition attempt period the boiler fails to light, the full sequence control p.c.b. will go to lockout and the
To reset the boiler turn the knob B (figure 15.3) on the 0 position and then press and release the boiler reset button C (Fig. 15.3).
RIVA HEAT ONLY MANUAL - REV A | 30 |