Product Description
Honeywell 7800 Series Microprocessor-based Integrated Primary Burner Control, RM7890A1056
PN: RM7890A1056
Key Features
- Automatic Sequencing: Manages the automatic on/off sequencing of the burner system.
- Flame Supervision: Ensures operational safety through continuous flame monitoring using interchangeable plug-in flame amplifiers (sold separately).
- Diagnostics & Troubleshooting: Features five LEDs that provide sequence information and a blinking power LED for fault code annunciation during lockout, aiding in troubleshooting.
- Nonvolatile Memory: Retains a history of the six most recent faults and the sequencing status even after power loss, which helps in maintenance and reducing downtime.
- Valve Proving System (VPS): Includes a programmable VPS check feature to verify the integrity of automatic safety shut-off valve seats, which requires an optional S7800A1142 Keyboard Display module for setup.
- Flexible Configuration: Offers selectable pilot flame establishing periods of 4 or 10 seconds and selectable relight or lockout action upon flame failure
Specifications
- Application: On/Off Primary Control with VPS
- Voltage: 120 Vac (+10%, -15%)
- Frequency: 50 Hz; 60 Hz (±10%)
- Power Consumption: 6 VA nominal, 10W maximum
- Pilot Flame Period: Selectable 4 or 10 seconds
- Main Flame Period: Intermittent
- Operating Temperature: -40°F to +140°F (-40°C to +60°C)
- Mounting: Panel-mounted (requires Q7800A subbase) or wall/burner mounted (requires Q7800B subbase-included)
- Approvals: UL Listed, CSA Certified, FM Approved, Swiss Re acceptable
