Hoval UltraGas 15, Technical Information Installation Instructions, Page: 12 / 50

3.5 Boiler-Flow resistance
UltraGas
®
(15-27)
UltraGas
®
(35,50)
0
5
10
15
20
25
30
0 0,5 1 1,5 2 2,5 3 3,5 4 4,5 5
[m
3
/h]
[mbar]
0
5
10
15
20
25
30
35
0 1 2 3
[m3/h]
[mbar]
3.6 Brief description of the
automatic firing device
The automatic firing device BIC960 of the UltraGas
®
only
operates in conjunction with the heating controller Top-
Tronic
®
E/UG. For this reason, the automatic firing device
only needs to take care of the last remaining functions to
ensure the correct operation of a modulating gas boiler.
The automatic firing device comprises the following func -
tions:
• PWM fan control (230V AC)
• Modulating operation
• Common electrode for ignition and flame monitoring
(ionisation)
• LPG valve and boiler room fan controllable
• Inputs for
- flow sensor 1
- flow sensor 2
- flue gas sensor
- water pressure sensor
- safety temperature limiter (not used)
- air pressure switch
- gas pressure switch
• Status outputs «fault» and «flame signal»
• Allows connection of additional (external) ignition device
• RS 485 connection to TopTronic
®
E/UG
• RS 232 connection to PC
• Start attempts: maximum 4
• Safety period: 5 sec
• Pre-ignition period: 5 sec
• Pre-purging period: 50 sec
• Follow-on time pump (230V AC): 5 min after heat demand
Sicherungen:
The BIC 960 is fitted with 3 fuses:
2AT Mains
4AT Pump
4AT Burner fan
Blowing of one of the two 4AT fuses securing the pump
or the burner fan, respectively, will prevent the affected
device from starting.
A failure of the mains fuse of the automatic firing device is
displayed on the TopTronic
®
E/UG by the failure message
„B:30 Bus interruption to automatic device“. The failure
appears when there is no communication between auto-
matic firing device and TopTronic
®
E/UG.
m
3
/h = Volume flow
mbar = Flow resistance
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TECHNICAL INFORMATION