The Control Panel; Introduction; Control; Explanation Of Icons - A.O. Smith BFC-28 Installation, User And Service Manual

gis
7
7.1

Introduction

This chapter covers the following topics:
•

Control;

•

Explanation of icons;

•

ON/OFF switch on controller;

•

Navigation buttons;

• PC connection.
7.2 Control
The control panel is completely menu-driven, and
comprises:
• a 4-line display with 20 characters per line;
• 6 buttons for controlling the water heater (below
the display);
• 6 graphical symbols (above the display);
• a connector for a service PC;
• an ON/OFF switch.
The buttons are divided into three groups:
• Navigation buttons:
- Buttons for UP , and DOWN
- Enter: ;
- Reset button:
• The main menu (11 "Main menu"):
• the service program (12 "Service program"):
This chapter is specifically intended for the service
and maintenance engineer and installation
engineer.
In this manual, the display of the controller is shown as
in the figure, both with and without icons.
a
»START OPERATION
^ CHANGE SETPOINT
È Tset=70ÉC
Instruction manual BFC

The control panel

7.3
The table explains the meanings of the icons.
Icons and their meaning
7.4
The ON/OFF switch of the controller turns the water
heater ON and OFF. Note that in the OFF position the
water heater remains electrically live, in order for the
continuous pump to stay running.
;
;
.
After switching on, the text INTERNAL CHECK
appears on the display for about 10 seconds. The
main menu (11 "Main menu") then appears. If no
selection is made in the main menu, the water heater
automatically switches to the OFF
mode (8.2 "Operating modes").
use the isolator between the water heater and the
mains power supply.
7.5
The use of these buttons is explained with the help of
the figure showing the main menu (11 "Main menu").
The navigation buttons are:
•
•
•
Explanation of icons
Name Explanation
Heat demand Heat demand detected
Purge Pre- and post-purge using
fan
Pressure switch Pressure switch is closed
Glow (Pre)glow
Gas control Gas control valve
valve open/ignition
Flame detection Water heater operational
ON/OFF switch on controller
INTERNAL CHECK
Note
To electrically isolate the water heater, you must
Navigation buttons
Buttons for UP , and DOWN
Enter: ;
Reset button: .
;
51