Update Detailed Control Screen
Ray Jones
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User-Manual/Menus/Detailed-Control-Menu.md
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User-Manual/Menus/Detailed-Control-Menu.md
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# Detailed Control Screen
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The detailed control menu allows the operation of the heater to be monitored in close detail.
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Here the actual pump speed, fan RPM, heat exchanger temperature and glow plug activity can be observed.
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The heater can be turned on or off by holding the Centre keypad button.
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The desired temperature, or fixed heat demand can be altered by pressing the Up / Down keys.
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With the heater idle, the menu will look something like below:
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## Starting the heater
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Hold the Centre key for a second or so, the heater should then start and this is reflected in the status message:
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Shortly thereafter, the fan will begin spinning, and the glow plug will be gently raised in temperature as can be observed by the steady rise in power applied to it:
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It takes about a minute for the glow plug to receive full power, at which point the pump then starts:
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the pump starts at a slow speed and steadily rises, along with fan speed to get the heater ignited.
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Ignition tends to be sensed once the body temperature of the heat exchanger has risen by about 5-10 degrees Celcius:
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Once the body temperature rises over about 65 degrees or so, the glow plug is shut down, all the while the fuel pump is progressively starts running faster until at full speed.
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After running at full speed for a while, the heater transitions to the running state, and now obeys the desired setting being ewither a thermostat setting, or a fixed heat demand:
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To toggle from Thermostat or Fixed demand modes, hold the down key:
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## Stopping the heater
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Heater shutdown is initiated by holding the Centre key for a while. The status will then change to Shutting down...:
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The pump is quickly lowered and eventually shut off, the glow plug is gently re-powered to assist in drying out the ehate exchanger of unburnt fuel:
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About a minute later the glow plug is un-powered and the heater then transitions to cooldown mode:
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It stays in cooldown mode until the heat excahnger is observed to have dropped below 55 degC, at which pointit then returns to the initial idle state.
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# Detailed Control Screen
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