ARITERM SWEDEN AB
•
ARITERM OY
• Asennus ja käyttöohje • Installation och driftanvisning • Installation and operating instruction • UK 25.05.2012 •
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ARITERM-VTT-S-07229-11.1
Burner start-up and stop
Turn the burner and the internal pump on from the operating switch. If the flow switch that
controls the internal pump is on, set the operating switch to Off mode. The main menu, which
shows the temperatures of boiler water and flue gases, will appear on the display. The main
menu also shows the Start-up/Stop setting and mode of the burner. If the buttons are not
pressed for 10 seconds, a graphic showing temperature and burner data will appear on the dis-
play.
The first start-up differs from normal start-up in that there are no pellets in the burner. Like-
wise, there are no pellets in the external feeding system.
Carry out the following actions in connection with the first start-up or if there are no more pel-
lets in the store:
1. Turn the external auger on from the main menu and wait until pellets arrive at the upper
connection of the burner The external auger will automatically stop after 15 min (the set-
ting can be changed).
2. Set the burner to ON mode.
Cold start
The burner performs a cold start by means of the ignition resistance when the boiler wa-
ter temperature is more than 8°C below the set value. The Burner setting shows the message
"Start-up 1K", the auger burner turns on and so does the red indicator light. Shortly after-
wards, the blower and the ignition resistance turn on. A cold start consists of seven phases
(1K-7K). When the flame detection system detects a flame in the burner head, the burner
moves directly to phase 5K and the green indicator light turns on. When starting directly from
phase 7K, the burner stops for 10 minutes in order for the combustion process to normalise in
the burner head. If the flame does not ignite after phase 7K, the burner gives a cold start alarm
as described in "Troubleshooting".
Do not change the settings during a cold start. After cleaning the burner head, make sure that
the burner performs a cold start because there are no embers in the burner head. The success
of the cold start can be ensured by sufficiently increasing the set boiler water temperature and
by changing it back to the desired value after ignition.
Hot start
The burner performs a hot start when the boiler water temperature is within 8°C of the set
temperature, for example, after a short power failure. During a hot start, the burner uses the
embers in the burner head for ignition and, by doing so, saves energy. In normal use, when the
burner goes from Maintain mode to Power mode, the burner performs a hot start. The burner
starts up automatically after power failures (hot or cold start depending on the temperature of
boiler water).
START-UP AND STOP
Power mode - Maintain mode
After ignition, the burner starts using the Max power range. When the boiler water tempera-
ture rises to within 4 ºC of its set value, the burner starts using the Mean power range and
will continue to use it until the set value is reached. When the target boiler water temperature
is reached, the burner blower still runs for one minute before the burner moves to Maintain
mode (heating method off ). While the burner is in Maintain mode, the auger burner brings
pellets to the burner head every now and then in order to maintain the embers. (Setting “Em-
ber maintenance”)
Stop
The burner can be stopped at any stage of the combustion process. Set Burner to Off in the
main menu.
The blower will continue to function for one minute after the burner has been
stopped.
Use as accumulator
As an option an Accumulator tank sensor can be connected to the boiler, an addition to which
a charging pump (a load pump) can also be controlled. The load pump is to be connected to
connectors 14 and 15 (230 vac) and the tank sensor to connectors 63 and 64.
The Load pump-setting is taken in to use from the
Accessories
-menu. This will automatically
put the
Holding time
setting to off-mode. The burner’s starting- and stopping temperatures
can now be set. These are controlled by the tank sensor. Load pump’s starting temperature is
set by the
Load pump diff
-setting. When the boiler temperature exceeds the
Set tempera-
ture - Load pump diff
-setting, the pump will start. When the tank has warmed and the burner
stopped, the pump will go off when the boiler water temperature has dropped by 2 degrees
from the set temperature.
