Programmer, 120 Vac, Interrupted Pilot Type, Running Interlocks, LHL-LF Proven
• Functions include automatic burner sequencing, flame supervision, system status indication, system or self-diagnostics and troubleshooting.
• Access for external electrical voltage checks.
• Application flexibility and communication interface capability.
• Five LEDs provide sequence information.
• Five function Run/Test Switch.
• Interchangeable plug-in flame amplifiers.
• Local or remote annunciation of RM7840 operation and fault information.
• Nonvolatile memory retains history files and lockout status after loss of power.
• Compatible with existing Honeywell flame detectors.
|Overview||Microprocessor-based integrated burner control for automatically fired gas, oil, coal or combination fuel single burner applications. Provides safety, functional capability and features beyond conventional controls.|
|Approvals, Federal Communications Commission||FCC Part 15, Class B, Emissions|
|Flame Establishing Period - Pilot||4 sec or 10 sec|
|Approvals, Control Safety Devices||Acceptable: CSD-1|
|Flame Establishing Period - Main||10 sec, or 15 sec, or 30 sec, or Intermittent|
|Approvals, Underwriters Laboratories Inc||Component Recognized, File No. MP268; Guide No. MCCZ.|
|PrePurge||Determined by ST7800A Purge Timer Card|
|Approvals, Canadian Standards Association||Certified, File No. LR95329-3.|
|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%)|
|AirFlow Check||User selectable|
|Second Stage Pilot Valve||selectable|
|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|
|Approvals, Swiss RE (formerly IRI)||Acceptable|
|Approvals, Factory Mutual||Report No. OX4A5.AF.|
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