Specifications :
Electrical Ratings
RM7890: 120 Vac (+10/-15%), 50/60 Hz (±10%).
EC7890: 220/ 240 Vac (+10%/-15%), 50/60 Hz (±10%).
Power Dissipation: 10W maximum.
Maximum Total Connected Load: 2000 VA.
Fusing Total Connected Load: 15A maximum, type SC or
equivalent, fast blow
Environmental Ratings
Ambient Temperature:
Operating: -40°F to +140°F (-40°C to +60°C).
Storage: -40°F to +150°F (-40°C to +66°C).
Humidity: 85% relative humidity continuous, noncondensing.
Vibration: 0.5G environment
Products
Relay
Modules
Models : RM7890A,B,C/EC7890A,B 7800 SERIES Relay Modules
Applications:
The Honeywell RM7890A, B, C/EC7890A, B Relay Modules are microprocessor-based integrated burner controls for semi-automatically fired gas, oil, or combination fuel single burner applications. The RM/EC7890 Relay Module is intended to replace the RA890F, G, H Protectorelay® Primary Control. The RM/EC7890 System consists of a relay module, subbase, and amplifier. Options include Personal Computer Interface, keyboard display module (KDM), Data ControlBus Module™, remote display mounting, first-out expanded annunciator, and Combustion System Manager¨ Software. Functions the RM/EC7890 provides include automatic burner sequencing, flame supervision, system status indication, system or self-diagnostics, and troubleshooting.
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