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? 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 applicationflexibility and optional communication interface capability.
? Compatible with existing Honeywell flame detectors.
? Application Semi Automatic Programming Control
? Flame Establishing Period – Pilot 4 sec or 10 sec
? Flame Establishing Period – Main 10 sec or Intermittent
? Interlocks Lockout
? Preignition Yes
? 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 interrupted
? Vibration 0.5 G environment
? Early Spark Termination Yes, 5 sec
? 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, Industrial Risk Insurers IRI Acceptable
? Approvals, Factory Mutual Report No. OX4A5.AF.