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Combustion 911
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BCU 370

Burner Control BCU 370QFEU0D1

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  • Mains voltage: 120 V AC, 50/60 Hz
  • No ignition or tightness control
  • Modulation of forced air gas burners of unlimited capacity in intermittent or continuous operation
  • Control of fan and butterfly valves
  • Easy start-up and maintenance in manual operating mode
  • Enhanced flexibility and simplified logistics with programmable functions
  • Easy servicing with user-friendly operating, warning, and fault messages
  • CSA and FM approved

Accessories

Model and Description Price Cart
PCO 200
Optical Adapter for BC Soft with USB interface, includes CD-ROM
Ignition Cable
Silicon Rubber Cable High Voltage 7mm (priced per foot).

Applications

Click on images for close-up view.

Application for BCU 370 Burner Control Unit Modulating-controlled forced draught burner

The BCU 370 controls the blower and moves the butterfly valve to pre-purging and ignition position. It issues the Enable signal to the control system after start-up of the burner.
Application for BCU 370 Burner Control Unit Modulating-controlled forced draught burner with tightness control

In addition to controlling the forced draught burner, the burner control unit also monitors the fail-safe function of the two solenoid valves for gas via the DG gas pressure switch.
Application for BCU 370 Burner Control Unit Modulating-controlled forced draught burner with pilot burner and tightness control

A pilot burner ignites the main burner and is switched off during the main burner’s safety time.

Specifications

Electrical
Mains voltage: 120 V AC, -15/+10%, 50/60 Hz, for grounded or ungrounded mains.
Power consumption: Approx. 9 VA plus approx. 50 VA for integrated ignition
Voltage to inputs, valves, fan, controller enable, actuator and ignition unit: mains voltage
Flame control with UV sensor or ionization sensor: Ionization control: 1 – 28 µA
UV control: 1 – 35 µA
Input voltage signal inputs: Signal "1": 80-126.5 V
Signal "0": 0-20V
Input current signal "1": Typ. 2 mA
Output to ignition transformer: No-switch contacts via semi-conductor
Max. number of operating cycles: 250,000
Contact Ratings
Valves: Max. 1 A, cos φ = 1
Butterfly valves: Max. 1 A, cos φ = 1
Ignition: Max. 1 A, cos φ = 0.3
Controller enable signal: Max. 1 A, cos φ = 1, the contacts may be loaded with a max. total of 2.5 A
Fan: Max. 3 A, start-up current: Max. 6.5 A < 1 s.
The outputs may be loaded with a max. total of 4 A.
Operation and fault signalling contacts: Dry Contact, max. 1 A, 253 V, not fused internally
Reset/Information button: Max. number of operating cycles: 1000
Fuse in BCU, replaceable, F1: T 5A H, pursuant to IEC 60127-2/5
Permissible UV sensors: Elster Kromschroder models UVS 1, 5, 6, 8 and UVD 1
Operation and Environment
Maximum length of ignition cable with integrated electronic ignition: 1 m
Maximum length of ionization/UV cable: 50 m (164 ft)
Ambient temperature: BCU 370: -20 – +60 °C (-4 – +140 °F)
BCU 370..I: -10 – +60 °C (14 – +140 °F)
no condensation permitted
   
Construction Materials
Enclosure: IP 54 pursuant to IEC 529
Housing: impact-resistant and heat-resistant plastic
Upper section: Plug-in upper section with operating and display elements
Lower section: connection terminals, earthing strip and prewired neutral bus with spacious wiring chamber
Connections: 1x M25 multiple screw connector, 4x 7 mm cable grommets.
2x M20 multiple screw connectors, 2x 7 mm cable grommets, and loosely enclosed.
1x or 2x M16 plastic screw connector(s) for the ignition cable(s).
Weight: Approx. 1.8 kg (4 lbs.)

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  All Products
All BCU 370
with Electronic Ignition
with Tightness Control
Accessories
BCU 370QFEU0D1
Price:
Without ignition; Mains voltage: 120 V AC, 50/60 Hz
BCU 370QFEU0D3
Price:
Without ignition; With tightness control; Mains voltage: 120 V AC, 50/60 Hz
BCU 370QI1FEU0D1
Price:
Electronic ignition, single-pole; Mains voltage: 120 V AC, 50/60 Hz
BCU 370QFEU0D3B1-3
Price:
With tightness control, ProifiBUS-DP and butterfly valve control over ProfiBUS; Mains voltage: 120 V AC, 50/60 Hz
PCO 200
Price:
Optical Adapter for BC Soft with USB interface, includes CD-ROM
Ignition Cable
Price:
Silicon Cable High Voltage 7mm (priced per foot)

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