13
Independent flame detector monitoring. During steps 3
to 22, MCU continuously monitors the flame detector. If
the detector fails, it will enter the Lock-Out state within
5 sec.
2 independent timers:
Start timing when the Pilot valve is open and the Pilot
flame is not established, system will Lock-Out after 10
min;
Timing starts when the Main valve is open and the Main
flame is not established, system will Lock-Out after 60
sec.
These two timers will reset when the Main flame is
successfully established.
MCU monitoring and control: the control state is sent to
the monitoring MCU every 0.1 sec during the operation
of the main control MCU. The monitoring MCU
compares the received state with the state measured
by itself. If the state is inconsistent, the Automatic
Electrical Burner Control System will Lock Out. If the
communication between the master MCU and the
monitor MCU times out, the controller will also lock out.
Automatic self-checking every 1 hour
19. If the Main flame has been successfully established, a light blue flame will be present.
Note
:
1.
When operating the heater for the first time, air may be in the fuel flow pipe, which can cause an
unsuccessful ignition. Repeat the ignition sequence to exhaust the air in the fuel flow pipe to allow
the heater to function properly.
2.
Before ignition, please make sure the CO
2
/ O
2
sensor is directed towards the light, otherwise
the Atlas CO
2
Controller may not send out the signal to activate the heater. The unit has a
photocell that will turn the unit ON if there is light and OFF if there is no light.
3.
Before ignition, please open the valve-manual control window on the back of the heater and
make sure the switch is in the ON position. Refer to diagram below.
State of on/off on valve
(Turn the inlet valve clockwise to close and counterclockwise to open)
