Showing 2001–2025 of 2146 results
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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. Features 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. Product Specifications ApplicationProgramming ControlDimensions (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 SubbaseDimensions (mm)127 mm wide x 127 mm high x 133 mm deep with Q7800A Subbase x 155 mm deep with Q7800B SubbaseWeight (lb)1 lb 13 ozWeight (kg)0.8 kgCommentsLHL-LF&HF ProvenFrequency50 Hz; 60 Hz (±10%)Approvals, Underwriters Laboratories Inc.Component Recognized, File No. MP268; Guide No. MCCZ.Approvals, CSACertified, File No. LR95329-3.Voltage120 Vac (+10, -15%)Shipping and Storage Temperature Range (F)-40 F to +140 FShipping and Storage Temperature Range (C)-40 C to +60 CApprovals, Federal Communications CommissionFCC Part 15, Class B, Emissions.Flame Establishing Period – Pilot4 sec or 10 secFlame Establishing Period – Main10 sec or IntermittentInterlocksLockoutPreignitionYesPrePurgeDetermined by ST7800A Purge Timer CardPostPurge15 secEarly Spark TerminationYes, 5 secRequired ComponentsQ7800A,B Universal Wiring Subbases. R7847, R7848, R7849, R7851, R7852, R7861, or R7886 Flame Signal Amplifier. ST7800A Plug-in Purge Timer Card.AirFlow CheckUser selectableSecond Stage Pilot ValveIntermittentPilot TypeinterruptedVibration0.5 G environmentApprovals, Control Safety DevicesAcceptable: CSD-1Approvals, Swiss REAcceptableApprovals, Factory MutualReport No. OX4A5.AF.
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