Pellet Volume Density Adjustment; Pellet Energy Density Value - Janfire NH Installation And Servicing Instructions

4.5 Pellet Volume Density Adjustment

Volume weight:
XX lb/ft
To achieve good combustion and the least amount of exhaust products, it is very important to indicate the
correct volume density of the pellets. The correct value can be supplied by your pellets supplier or by weighing.
The average weight per litre of pellets is 5.77 lbs/gal (42.17 lbs/ft3 or 675 gr/liter). When adjusting this value, the
dosage time is also changed (automatically) to compensate accordingly, resolve discrepancies and to ensure
good combustion.
If the weight setting is not correct, poor combustion will occur. Tar can build up in the combustion chamber and
burning cup and malfunction could be the result.
To weigh pellet fuel sample: Fill a 5 gal container with pellets and weight it on a scale. Make sure to subtract
the empty weight of the container. Compute net weight per gal by dividing by 5. Record net weight in lbs.
Multiply now by 7.31 to get lbs/ft3 and program this value into the NH burner.
To change the weight density setting: Scroll or repeatedly push the "menu" button until you come to "Volume
Weight xxx lbs/ft3" and change by pushing the "-" and "+" buttons.
To save the new weight density setting: Press and hold down the "menu" button for 3 seconds.
4.6 Pellet Energy Density Value (ENHV)
To achieve good combustion and reduced exhaust gases, the correct energy density value for the pellets is
required and must be inputted into the burner. Your pellet supplier can supply this information.
The European Net Heat Value (ENHV) for a pound of pellets at 100% dry matter is expressed as 7.420 Btu/lbs
(4.80 kWh/kg). Always check with your pellet supplier regarding it's ENHV value! When this value is changed in
the burner controller, the dosage auger feeding time is also changed (automatically) to compensate for any
deviations in the energy density value and to ensure good combustion.
To change the energy density value: Press the menu button repeatedly until "Energy density xxx Btu/lbs" is
shown and change its value by pressing the "-" or "+" buttons.
To save the energy density value: Press and hold down the "menu" button for 3 seconds.
Selection of NH Burner Output Value.
WITH PT-100 boiler water temperature sensor:
In this mode the burner output will modulate between two preset limits by using the PID regulator. The
modulation function can be inactivated in menu step 66. If modulation is inactivated, the NH burner will run at a
fixed output level, see text below.
Janfire NH Burner Service Installation Manual 4.16.09 - Technical specifications are subject to change without prior
notice.
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