Description
Honeywell RM7850A1019 Relay Module is a microprocessor-based integrated burner control designed specifically for automatically fired gas, oil, or combination fuel single burner full modulation. The RM7850A system consists of a relay module, sub-base, amplifier and a purge card.
Functions provided by the RM7850A include automatic burner sequencing, flame supervision, system status indication, system or self-diagnostics and troubleshooting.
- Programming Control meeting European Community Timings-LHL, HF/LF Proving
- 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 amplifiers.
- Local or remote annunciation of operation and fault information (optional).
- Nonvolatile memory retains history files and lockout status after loss of power.
- Compatible with existing Honeywell flame detectors.
- 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 10 oz
- Weight (kg):0.7 kg
- Comments: LHL-LF&HF Proven
- Frequency: 50 Hz; 60 Hz (±10%)
- 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:3 sec or 5 sec
- Flame Establishing Period – Main:3 sec, or 5 sec, or Intermittent
- Interlocks: Lockout
- Preignition: Yes
- PrePurge: Determined by ST7800A Purge Timer Card
- PostPurge:15 sec
- Required Components: Q7800A, B Universal Wiring Subbases. R7847, R7849, R7861, or R7886 Flame Signal Amplifier. ST7800A Plug-in Purge Timer Card.
- AirFlow Check: User selectable
- Second Stage Pilot Valve: Intermittent
- Pilot Type: interrupted
- Vibration: 0.5 G environment
- Approvals, Swiss RE: Acceptable
- Approvals, Factory Mutual: Report No. J.I. OYOA9.AF.
- European Directives: Complies with Gas Appliance Directive (90/396/EEC). Low Voltage Directive (73/23/EEC). EMC Directive (89/336/EEC).
- Approvals, Gastec/European:GASTEC: CE-63AP3070/1, Approved to EN298.
Features
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