Num Puls per R
Three pulses per round. Do not change the setting manually!
Standardization
automatic test for fan maximum rotation speed. Burner control should be in
standby position when the test begins. Select
activated
from the menu to
start the test.
1. The servomotor for air drives to pre-purge position.
2. The fan motor starts.
3. Burner control adjusts the variable speed drive setting to 95%.
When the fan reaches a stable rotation speed, the measured speed will be
set as the
StandardizedSp
value. This value is equal to 100% of fan rotation
speed; 5% is reserved for changes in environmental conditions.
StandardizedSp
Do not change the setting manually! Perform standardization as described
above.
SettlingTime
Rotation speed measured by variable speed drive control. With a stable
output, the frequency measurement result stays almost the same. If the result
varies notably, check sensor operation.
Setpoint Output
The variable speed drive control signal can be set to 0…20 mA or 4…20 mA.
4.12 Checking O
2
module (WD200)
O
2
module, connected to burner control through CAN bus, can be connected with
oxygen sensor.
When control voltage is switched on, and oxygen sensor is activated, heating is on and
oxygen sensor is ready for operation.
Activate oxygen sensor during first start-up, and always after power failure, to start
heating. Oxygen sensor is ready for operation when 1292 °F is reached. It takes
approx. 10 min to reach the temperature.
Oxygen sensor is self testing. Self test monitors aging of the device, based on
measurement cell resistance and response time. If measurement cell resistance and
response time exceed 400Ω and 25 seconds, self test gives an alarm, and sensor must
be changed.
O
2
module settings are in the following menu level:
Description
Params. & Display
O2 Module
Displayed Values
Actual O2 Value
Actual O2 Value
O2 Setpoint
O2 Setting
SupplyAirTemp
Supply air
temperature in °F
FlueGasTemp
Flue gas
temperature °F
CombEfficiency
Combustion
efficiency
50 (111)
M4219 2305EN
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