02/2016 - Art. Nr. 4200 1046 8202A
7
en
Operation
TCH 24x control unit
Program sequence phases:
1:
No voltage
2:
Powering up, no heating request
3:
Heating request, Verification of fan
zero speed, pre-heater on
4:
Checking the rest status of the air
pressure switch
5:
Fan speed is increased to the pre-
ventilation position
6:
Checking the air pressure
7:
Pre-ventilation
8:
The fan speed is decreased to the
ignition position, pre-ignition and
switching on of the pump motor
9:
Stray light monitoring
10:
Burner start-up: opening of the 1st
stage solenoid valve, flame
formation
11:
Stabilisation time, the fan speed is
increased to the 1st stage
12:
Awaiting authorisation for
regulation
13:
The fan speed is increased to the
2nd stage valve opening value
14:
Operation in 2nd stage
15:
The fan speed is decreased to the
2nd stage valve closing value
16:
Operation in 1st stage
17:
Regulation cut-out, fan speed is
decreased to the post-ventilation
position
18:
Post-ventilation time
19 : Stray light and air pressure
monitoring at the end of the post-
ventilation time
20:
The fan speed is reduced to 0
-
Awaiting a new heating request
