Water Level Sensor Trouble; Heating Temperature Sensor Trouble; Combustion Indication - Saturn KDB - 161 GOM Manual

4.18.2.11 Water Level Sensor Trouble (Opened Air Type)
If monitors water level that there are water at the normal water level sensor and no water at the low water level sensor,
consider the trouble of normal water level sensor or low water level sensor, and operates immediately a serial of operation
as same condition of low water level. (Only if water temperature in the pipe is more than 80 ± 2.0 , fan operate.)

4.18.2.12 Heating Temperature Sensor Trouble

If finds the trouble of disconnection / short-circuit by checking heating temperature sensor as long as the power of boiler
is ON, the boiler is stopped (The burner stops and the pump / blower operate continuously, and stop the pump / blower
after temperature sensor is returned to normal and check water temperature to be less than 80 ± 2.0
the failure status of sensor is indicated in temperature controller.

4.18.2.13 Combustion Indication

Combustion indication in the temperature controller displays by the presence of flame signal. (Not by the presence of
fuel supply)
4.18.2.14 Air Pressure Switch
Air pressure switch is always ON regardless of blower. When air pressure is excessive, aind pressure switch is OFF
and the boiler is stopped and the abnormal status of air pressure is transmitted to the temperature controller. Blower
operates continuously and release automatically when return to normal state. (Only if water temperature in the pipe is
more than 80 ± 2.0 , pump operates. The abnormality of RPM isn't monitored in the abnormal status of wind pressure.)
4.18.2.15 Gas Leakage Alarm
When the gas leakage signal is input from outside, the boiler is stopped and blower operates to ventilate air. When the
gas leakage signal is released, the abnormal status is disappeared automatically and then returns to the status as before.
(Only if water temperature in the pipe is more than 80 ± 2.0 , pump / blower operate.)
4.18.2.16 Pump Trouble
Water level control method of the closed air type boiler is decided by the input presence of flow switch within 6 ± 1
seconds after pump is ON. When there is no signal of flow switch within 3 ± 1 seconds, delay Pre-Purge by 6 ± 1
seconds. When the signal is, operate normally. If flow switch is ON continuously more than 15 ± 3 seconds before pump
operates, consider the trouble of pump or flow switch and transmit abnormal status to the temperature controller. Pump is
OFF and maintains this status until re-operate the temperature controller. (Only if water temperature in the pipe is more
than 80 ± 2.0 , fan operate.)
4.18.2.17 Time Multiple Function When Control Heating
When heating combustion operates continuously at a steady heating value by heating command of the temperature
controller, calculate average heating value and is converted into running time / stop time according to heating value. And
then maintain the stopping state (same as outdoor state) for regular time after running combustion for regular time. If
changed heating command or setting temperature in the temperature controller or operated hot water combustion, etc
except heating function within heating running time or forced stop time, the time should be always initialized. (Only in hot
water combustion, it doesn't stop function.)
4.18.2.18 MICOM Trouble
As the part of deciding trouble inside of the controller, considers that there is trouble of MICOM when external AC
power of 50/60Hz isn't monitored, stops all output and transmits trouble status to the temperature controller and then
maintains the current state until re-operate the temperature controller. (If water temperature in the pipe is more than 80 ±
2.0 , pump operate.)
4.18.2.19 Heating Control when Hot Water Use
Proportional control uses the indirect control method of hot water temperature by heating water temperature and hot
water temperature is as follows.
In case of FR-5 use, water temperature in the pipe is 80
outgoing and hot water .
4.18.2.20 Heating Temperature Control
The temperature of heating water at the discharge may be set in the range of 30~80 4.0
the temperature of the heating water is lower than 83 , the ratio control(PID) will be performed in accordance with the
specified procedures.
If the range of control has been exceeded due to the change in the set temperature or to abrupt change in flow, the set
temperature will be reached through the proportional control with the delay of 300 15 seconds.(If 83 4.0
the delay of 30 3 seconds will not be performed.)
when choose heating, and is set 70
- 32 -
KDB-GOM
Series
in the pipe.) and
when choose
at the room thermostat. If
is exceeded,