PRIMARY CONTROL W/SHUTTERDRIVE

RM7897A2002 HONEYWELL PRIMARY CONTROL W/SHUTTERDRIVE - 120V - 50/60Hz - Operating Temp -40 to 140 F - Flame Establishing Period - Pilot: 4 sec or 10 sec - Prep Purge: Determined by ST7800A Purge Timer Card - Post Purge: programmed with S7800A1142 display Features - Includes blinking LED fault annunciation feature. - Five LEDs provide sequence information. Power LED blinks fault code on Safety Shutdown. - Nonvolatile memory retains history files and sequencing status after power loss. - Interchangeable plug-in flame amplifiers. - Optional remote reset capability. - Optional report generation. Selectable relight or lockout on loss of flame. - Airflow switch check. - Requires S7800A1142 Display to program post purge feature. The Honeywell RM7890B; RM7895A Relay Modules are microprocessor based integrated burner controls for automatically fired gas, oil or combination fuel single burner On/Off applications. The RM7890B; RM7895A System consists of the relay module, wiring subbase, amplifier and the RM7895A also requires a purge timer. Options include Keyboard Display Module (KDM), Data ControlBus Module, remote display mounting and Modbus communications is available using the S7810M Modbus Module or configuring the S7800 KDM. The RM7890; RM7895 is programmed to provide a level of safety, functional capability and features beyond the capacity of conventional controls.