10
4 213 893 / 01
TECHNICAL INFORMATION
3.4
Short description of the automatic firing unit
BIC 335
-
The automatic firing unit operates both without control
-
ler (TTE) and also without room station (RS-OT). The
automatic firing unit comprises the following functions
- PWM- fan (230V~)
- Modulating operation
- Inputs for
Flow sensor
Return sensor
Flue gas sensor
Gas pressure deflector
Air pressure deflector:
(not used)
Water pressure deflector
Safety temperature limiter:
(external flue gas thermostat)
HW-buffer sensor
Outdoor sensor
Locking entry:
(Burner blocking)
- Status exit „Failure“ (invertible by parameter setting)
- Three-way-valve control for heating/hot water or load-
ing pump control (230V~exits); Exit for a three-way-
valve / HW loading pump is invertible by a parameter.
-
Collective electrode for ignition and flame guide (Ionisa
-
tion)
-
Main gas valve (ev. LPG- valve) / heating room ventila
-
tion accessable
- Interface to display
-
OpenTherm- interface (RS-OT, TTE)
- RS 232- interface to PC
- Start attempts: 4
- Safety period: 5 sek
- Ignition period: 5 sek
- Pre-ventilation period: 20 sek
- After-run time main pump / heating pump
(230V ~): 10 min
- After-run time three-way valve / HW-loading pump: 2 min
- Restart locking after a heat demand: 2 min
- Restart locking after a temperature blocking: 2 min
Fuses
On the automatic firing unit theres is a mains fuse. The
breakdown of this fuse (2AT) is noticeable by an empty
display even the main deflector is on.
Ionisation flow
The value of the ionisation flow is noted on the informa
-
tion level and appears as step 8. The access to the infor-
mation level is explained in chapter 3.5.
Содержание TopGas 35
Страница 35: ...35 4 213 893 01 ...