Hamworthy Sherborne SE64he, Инструкция по установке, наладке и обслуживанию

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HAMWORTHY HEATING LTD
17
SHERBORNE 500001167/E
7.3 INITIAL LIGHTING
Only competent people registered for working on non-domestic gas appliances should attempt the following
operations. Before commissioning a boiler ensure that all involved are aware of what action is about to be taken.
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Record all readings for future reference on relevant commissioning sheet.
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Allow system to warm up sufficiently to check operation of control thermostat.
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A combustion check must be taken when first commissioning the boiler. A sampling point is provided.
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NOTE! Flue components can be hot enough to cause injury if touched when boiler is firing
7.3.1 Lighting the boiler
1. Ensure the boiler gas isolating valve is closed.
2. Switch on the electrical supply
3. Press the mode button to continuous operation (see section 8)
4. The boiler will start-up & go through the ignition sequence. As the gas is isolated, the control will go to
lockout as displayed on the display screen. Refer to section 8 of Controls Operation.
5. If the above procedure occurs correctly, open the gas isolating valve. Reset the lockout & the fault
indication will extinguish.
6. The boiler will commence its ignition sequence as previously described. This time, when the gas valve is
energised the burner will ignite.
7.3.2 Safety Checks
To check for correct operation of the controller, with the boiler running, switch Off the gas supply at the isolating
valve, the boiler should shutdown within one second & make a re-ignition attempt. As the gas is isolated, the
control will go to lockout. Switch On the isolating valve. Wait at least 15 seconds before pressing re-set button on
fascia to re-set controller. After a waiting period the boiler will light & run normally.
7.3.3 Flame Signal Assessment
The flame ionisation signal generated whilst the boiler is firing, can be viewed directly from the display screen.
The value should be approximately 15-20µA, but not less than 3µA.
7.3.4 - Adjusting the settings of the boiler
The desired Flow temperature setpoint can be set as follows.
With the boiler in normal operation
, press the boiler temperature button & the current set-point will be displayed
(factory set to a maximum flow temperature of 80°C). Pressing the - or + buttons will increase or decrease the
setpoint in 0.5°C increments within the limits set in the program.
After changing the setpoint to the desired value, the mode key must be pressed to store the value.
Note: the screen will revert back to the Default Screen after a few seconds.
7.4 Ignition Controller Check.
With the burner firing, the flame signal should be at least 3µA. To check for correct operation of the ignition
controller, close the gas valve. The boiler should shutdown after approximately one second & attempt a re-
ignition. Check that the flame has been extinguished
7.5 Gas Supply Pressure Check.
.When the boiler modules have been checked for correct operation the gas supply pressure should be checked.
This should be done with all modules firing.
For Natural Gas the gas control valve zero governor control system is configured for a nominal gas inlet pressure
of 20mbar measured at the rear of the boiler, with a maximum inlet pressure of 25mbar.
For LPG firing boilers, the nominal gas inlet pressure is 37mbar with a maximum inlet pressure of 45mbar.
Mode button