12 Gas Technology; Basic Principles - Henny Penny FlexFusion FPG-221 Service Instructions Manual

Gas technology
12 Gas technology

12.1 Basic principles

Functional diagram
Functional description 1. The control board issues a request to the electronic ignition unit.
INFORMATION
64
Air
Gas - solenoid valve
Control board A1
BUS communication
2. The electronic ignition starts the gas fan. A feedback of the speed
is issued.
3. The glow electrode is turned on.
4. After a preheating time of 2 seconds the gas solenoid valve is
additionally actuated.
5. The combustion process begins.
6. The flame is detected by the control unit via the ionization
electrode.
7. The heating capacity is regulated over gas fan speed.
There is permanent communication between the control board and ignition
module. All information is visible in the status overview or in the CO
tion. Faults are indicated by corresponding error messages.
Service-instructions
Glow electrode
Ionization
(Flame detection)
Fan
Digital ignition module
Gas heat exchanger
Transformer
calibra-
2