Electronic regulation
Regulation of the flap valve (electronic regulation)
Electronic regulation of the flap valve is standard equipment for every type of AQUAFLAM fireplace insert. The control unit of the simple setting of the flap is intended for direct control of the flap position to regulate the intake of air into the combustion area of the heating insert (the position of the potentiometer is reflected in the position of the flap). To limit overheating in the heat exchanger, it contains a temperature sensor, which in the event of a higher temperature of water in the exchanger causes a limitation in the intake of air. If the operating temperature and power supply voltage are at normal levels, the potentiometer can be used to alter the position of the flap from closed to up to 90°. Should the temperature registered by the sensor exceed 85°C, the flap then returns to the minimal (closed) position, with normal activity resuming once the temperature has fallen below 75°C. If the temperature of the sensor is above 90°C, the flap indicates this state with a repeated acoustical signal (long and short tone with a periodic interval of around 7 seconds, continuing for the entire period that the temperature is above this level. The same indication is used for a short circuit in the temperature sensor). Should the power supply voltage in the batteries fall below the level that is necessary for the safe operating of the electronic regulation (around 5.1V – in this case it is necessary to replace the batteries with new ones), every movement of the flap is accompanied with an acoustical signal (beep-beep, a signal that repeats at an interval of around 30 minutes even if the flap is not in motion). If the power falls still further, to a level at which any further operation of the flap would not be safe (below 5V), every movement of the meter is accompanied with an acoustical signal (beep-beep/beep, this signal is repeated at an interval of around 30 minutes even if the flap is not in motion), while the flap at such a power level remains continually in the minimal position. Following the insertion of new batteries, the flap will issue four acoustical signals (beep-beep-beep-beep), while the electronics automatically set the flap at the zero position (the flap moves against the backstop, the electronics then repeat the setting of the zero position every time that one thousand movements of the flap occur and the following decrease in temperature), followed then by the normal activities of the flap.
Full regulation of combustion (optional equipment)
The electronic regulation of the expanded control of the flap is intended to regulate the temperature of water in the heat exchanger. The position of the control potentiometer gives the desired water temperature in the exchanger within the range agreed before the programming of the control units. As opposed to the regular flap valve, it contains an additional door switch contact (for recognising fuel adding) as well as a relay with a switch contact for regulating the circulation pump. The position of the potentiometer determines the desired temperature of water in the exchanger. Should the doors be opened in the course of the heating cycle, then the flap is automatically set to the minimal position (lowering the smoke released into the room).
If the doors are closed before the set time limit for fuel adding, then the flap returns to the position before opening. IN the opposite case, it is set in the fuelling position (if the temperature is low, then the electronics register this as heating and open to the heating position – if the temperature does not rise in this position within 30 minutes, the flap is then restored to the minimal position). After fuelling, the temperature rises up until the desired level – when a cutoff shift the flap to the regulation position. If the temperature continues to rise, then once the temperature is reached, the cutoff sends the flap to the restricted position, and it remains so until more fuel is added. In the event of an increase beyond the set temperature for starting the circulation pump, the relay contact switches shut, and once the temperature falls below the level set for stopping the pump, the contact opens again. Should the temperature registered by the sensor exceed 85°C, the flap is then set at the minimal position, with normal activity resuming once the temperature falls below 75°C.
If the temperature of the sensor exceeds 90°C, , the flap indicates this state with a repeated acoustical signal (long and short tone with a periodic interval of around 7 seconds, continuing for the entire period that the temperature is above this level. The same indication is used for a short circuit in the temperature sensor). Should the power supply voltage in the batteries fall below the level that is necessary for the safe operating of the electronic regulation (around 5.1V – in this case it is necessary to replace the batteries with new ones), every movement of the flap is accompanied with an acoustical signal (beep-beep, a signal that repeats at an interval of around 30 minutes even if the flap is not in motion).
If the power falls still further, to a level at which any further operation of the flap would not be safe (below 5V), every movement of the potentiometer is accompanied with an acoustical signal (beep-beep/beep, this signal is repeated at an interval of around 30 minutes even if the flap is not in motion), while the flap at such a power level remains continually in the minimal position. Following the insertion of new batteries, the flap will issue four acoustical signals (beep-beep-beep-beep), while the electronics automatically set the flap at the zero position (the flap moves against the backstop, the electronics then repeat the setting of the zero position every time that one thousand movements of the flap occur and the following decrease in temperature), followed then by the normal activities of the flap.
The control unit measures the current flowing during the movement of the flap. If the current falls below the set limit, then the unit registers this state as the flap having attained its desired position. If there is no fall in the current, the unit then attempts to reach the desired position 2 additional times. If even these two attempts at setting the flap do not succeed in establishing its desired position, then the unit announces this with an acoustical signal (beep) revealing that it is necessary to fix a mechanical defect with the flap.