Description
Microprocessor-based integrated burner control for industrial semi-automatically fired gas, oil, coal or combination fuel single burner applications. Provides level of safety, functional capability and features beyond conventional controls.
Features
• Functions include purge, burner pilot startup, flame supervision, system status indication, system or self diagnosis and troubleshooting.
• Delays admission of fuel to combustion chamber until pilot flame has been proven and then monitors the flame through the run period while providing system status indication.
• Includes Keyboard Display Module.
• Five LEDs provide sequence information.
• Intermittent pilot valve.
• Interchangeable plug-in flame amplifier.
• Access for external electrical voltage checks.
• Nonvolatile memory retains history files and lockout status after loss of power.
• Selectable pilot flame establishing period.
• Provides application flexibility and optional communication interface capability.
• Compatible with existing Honeywell flame detectors.
Specification
Application: Semi Automatic Primary Control with Purge
Flame Establishing Period – Pilot: 4 sec or 10 sec
Flame Establishing Period – Main: Intermittent
Interlocks: Running
PrePurge: Determined by ST7800A Purge Timer Card
Required Components: Q7800A,B Universal Wiring Subbases. R7847, R7848, R7849, R7851, R7852, R7861, or R7886 Flame Signal Amplifier. ST7800A Plug-in Purge Timer Card.
Voltage: 120 Vac (+10, -15%)
Frequency: 50 Hz
Frequency: 60 Hz (±10%)
Pilot Type: intermittent
Vibration: 0.5 G environment
Ambient Temperature Range (F): -40 F to +140 F
Ambient Temperature Range (C): -40 C to +60 C
Dimensions (in.): 5 in. wide x 5 in. high x 5 1/4 in. deep with Q7800A Subbase x 6 3/32 in. deep with Q7800B Subbase
Dimensions (mm): 127 mm wide x 127 mm high x 133 mm deep with Q7800A Subbase x 155 mm deep with Q7800B Subbase
Weight (lb): 1 lb 10 oz
Weight (kg): 0.7 kg
Approvals, Underwriters Laboratories Inc: Component Recognized, File No. MP268; Guide No. MCCZ.
Approvals, Canadian Standards Association: Certified, File No. LR95329-3.
Approvals, Control Safety Devices: Acceptable: CSD-1
Approvals, Federal Communications Commission: FCC Part 15, Class B, Emissions.
Approvals, Swiss RE (formerly IRI): Acceptable
Approvals, Factory Mutual: Report No. OX4A5.AF.
Comments: Includes S7800 Display
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