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Programmer Ctrl. LHL-LF&HF Proven Purge

RM7845A1001/B

Programmer Ctrl. LHL-LF&HF Proven Purge

  • Product Info
  • Literature

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

Application
Programming Control
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 13 oz
Weight (kg)
0.8 kg
Comments
LHL-LF&HF Proven
Frequency
50 Hz; 60 Hz (±10%)
Approvals, Underwriters Laboratories Inc.
Component Recognized, File No. MP268; Guide No. MCCZ.
Approvals, Canadian Standards Association
Certified, File No. LR95329-3.
Voltage
120 Vac (+10, -15%)
Shipping and Storage Temperature Range (F)
-40 F to +140 F
Shipping and Storage Temperature Range (C)
-40 C to +60 C
Approvals, Federal Communications Commission
FCC Part 15, Class B, Emissions.
Flame Establishing Period - Pilot
4 sec or 10 sec
Flame Establishing Period - Main
10 sec
Interlocks
Lockout
Preignition
Yes
PrePurge
Determined by ST7800A Purge Timer Card
PostPurge
15 sec
Required Components
Q7800A,B Universal Wiring Subbases. R7847, R7848, R7849, R7851, R7852, R7861, or R7886 Flame Signal Amplifier. ST7800A Plug-in Purge Timer Card.
AirFlow Check
User selectable
Pilot Type
interrupted
Vibration
0.5 G environment
Approvals, Control Safety Devices
Acceptable: CSD-1
Approvals, Swiss RE
Acceptable
Approvals, Factory Mutual
Report No. 1V9AO.AF.

Technical Documents

Installation Materials-RM7845A 7800 SERIES Relay Modules

Maintenance/Product Reference Materials-Checkout and Test for RM7800, RM7824, RM7840, RM7845, RM7850, RM7885, RM7888, RM7890, RM7897, RM7898 Relay Mod