Section 9: Boiler Operation
Page 36
9.4 Boiler Control Panel
T: 69.5°C
SP: 75.0°C
Modulation Level
Heating Demand
STANDBY
ON
V
V
V
V
V
V
2
1
3
5
4
6
i
Figure 9-3:
Boiler control panel
The boiler control panel is located at the top front of the boiler (behind
the control panel cover) and includes the following:
•
LCD screen: this displays the boiler operating condition and
(when necessary) a ‘Service’, ‘Fault’ or ‘Fuel Low Warning’
message for the user.
•
Boiler control setting buttons: for boiler control system operation
and setting
•
‘ON/STANDBY’ switch: to switch the burner off when required,
by interrupting the switched live supply to the burner. This switch
does NOT isolate the electrical supply to the burner.
9.4.1 Function of buttons
The six control buttons perform different tasks depending on which
mode the control is in, as follows:
Button no.1
In ‘Service Menu’ mode – to scroll up
In ‘Parameter Menu’ mode – to both enter parameter menu password
and to scroll up
Button no.2
In ‘Service Menu’ mode – to scroll down In ‘Parameter Menu’ mode –
to scroll down
Button no.3
In ‘Service Menu’ mode – to exit function In ‘Parameter Menu’ mode –
to exit parameter
In ‘Home screen’ mode (when Fault Message is displayed) – to reset
control
Button no.4
In ‘Home screen’ mode – to enter boiler set point temperature
adjustment
In ‘Service Menu’ mode – to select function
In ‘Parameter Menu’ mode – to enter parameter
Button no.5
In ‘Home screen’ mode – to decrease boiler set point temperature
In ‘Parameter Menu’ mode – to decrease parameter value
Button no.6
In ‘Home screen’ mode – to increase boiler set point temperature
In ‘Parameter Menu’ mode – to increase parameter value
9.4.2 Boiler Control LCD screen
The control LCD screen can show six different display types:
•
Home Screen – Indicating the current stage in boiler operating
sequence (Refer to Section 9.6)
•
Information - Displays the ‘Flame lux’ and ‘Fan speed’ at that
moment
•
Oxygen Level - displays the target level and actual level of
oxygen in the combustion gases, as measured by the Lambda
sensor
•
Service Information – Displays pellet auger ‘Run time’ and
‘Service In’ period (both in hours)
•
Service Menu – To select ‘Brazier Clean’, ‘Restore Default Setup’,
‘Reset Service Timers’, ‘Parameter Menu’ and ‘Prime Auger’
functions
•
Parameter Menu – to check/adjust the boiler control parameters
(Refer to Section 9.7) – this is accessed from the Service Menu.
access to the Service Menu (and thus the Parameter Menu) is
password protected.
nOtE
!
9.4.3 ‘Home Screen’ Display
T: 69.5°C
SP: 75.0°C
Modulation Level
Heating Demand
Figure 9-4:
Home screen display
This indicates the following information for the boiler:
•
The current boiler temperature (top left corner)
•
The boiler ‘Setpoint’ temperature (top right corner)
•
Heating demand present or not (upper centre)
•
Functions in operation (mid centre) – Lambda sensor (
λ
symbol
flashes to indicate operation), fan, ignition element, auger, flame
on.
•
Operating sequence stage (bottom left)
•
Modulation indicator (bottom right) – e.g. 4 segments =100%, 3
segments = 75%, etc.
9.4.4 information and Service information
To access these displays:
•
Press button 3 (i) once ‘Information’ screen is displayed,
showing:
Flame lux: %
Fan Speed: RPM
•
Press button 3 again
‘Oxygen Level’ screen is displayed showing
Target level: %
Actual level %
•
Press button 3 again
‘Service Information’ screen is displayed, showing
Run time: Hrs.
Service in: Hrs.
•
Press button 3 again to return to the ‘Home screen’ display
