GB-26
D
GB
F
NL
I
E
Technical data
Electrical data
Mains voltage:
BCU..Q: 120 V AC, -15/+10%, 50/60 Hz, ±5%,
BCU..W: 230 V AC, -15/+10%, 50/60 Hz, ±5%,
for grounded mains.
Flame control:
with UV sensor or ionization sensor.
For intermittent or continuous operation.
Flame signal current:
ionization control: 1 – 25 μA,
UV control: 1 – 35 μA.
Ionization cable, UV cable:
max. 100 m (328 ft).
Contact rating:
Valve outputs V1, V2, V3 and V4 (terminals 13, 14, 15
and 57):
max. 1 A each, cos φ ≥ 0.6.
Actuator outputs (terminals 53, 54 and 55):
max. 1 A each, cos φ = 1.
Air valve output (terminal 10):
max. 1 A, cos φ = 1.
Ignition transformer (terminal 9):
max. 2 A.
Total current for the simultaneous activation of the
valve outputs (terminals 13, 14, 15, 57), of the
ignition transformer (terminal 9) and of the actuator
(terminals 53, 54, 55):
max. 2.5 A.
Signalling contact for operating and fault signals:
max. 1 A (external fuse required).
Number of operating cycles:
The fail-safe outputs (valve outputs V1, V2, V3
and V4) are monitored for correct functioning and
are thus not subject to a max. number of operating
cycles.
Control actuator (terminals 53, 54 and 55):
max. 1,000,000,
signalling contact for operating signals:
max. 1,000,000,
signalling contact for fault signals:
max. 10,000,
On/Off button:
max. 10,000,
Reset/Information button:
max. 10,000.
Input voltage of signal inputs:
Rated value
120 V AC
230 V AC
Signal “1”
80 – 132 V
160 – 253 V
Signal “0”
0 – 20 V
0 – 40 V
Signal input current:
Signal “1”
max. 5 mA
Fuses, replaceable, F1: T 3.15A H,
F2: T 2A H, pursuant to IEC 60127-2/5.
Mechanical data
Weight: 0.7 kg.
Dimensions (W × H × D): 102 × 115 × 112 mm.
Connections:
Screw terminals:
nominal cross-section 2.5 mm²,
wire cross-section (rigid) min. 0.2 mm²,
wire cross-section (rigid) max. 2.5 mm²,
wire cross-section AWG min. 24,
wire cross-section AWG max. 12.
Spring force terminals:
nominal cross-section 2 x 1.5 mm²,
wire cross-section min. 0.2 mm²,
wire cross-section AWG min. 24,
wire cross-section AWG max. 16,
wire cross-section max. 1.5 mm²,
rated current 10 A (8 A UL), to be observed in
case of daisy chain.
Environment
Ambient temperature:
-20 to +60°C (-4 to +140°F),
no condensation permitted.
Storage temperature: -20 to +60°C (-4 to +140°F).
Enclosure: IP 20 pursuant to IEC 529.
Installation location: min. IP 54 (for installation in a
control cabinet).
Designed lifetime
This information on the designed lifetime is based on
using the product in accordance with these operating
instructions. Once the designed lifetime has been
reached, safety-relevant products must be replaced.
Designed lifetime (based on date of manufacture)
in accordance with EN 230 and EN 298 for BCU:
20 years.
You can find further explanations in the applicable
rules and regulations and on the afecor website
(www.afecor.org).
This procedure applies to heating systems. For
thermoprocessing equipment, observe local regu-
lations.
