Honeywell EC7823A1004 Burner Controller

Features:

• Factory-integrated system safety features.
• Flame detector relay only: a suitable primary control must be used for the safe-start check, safety lockout, load switching and the other functions a flame safeguard system requires.
• Supports a local or remote-mounted system information display.
• Plug-in flame signal amplifier module.
• Three LEDs show status information.

Specifications:

• Power supply: 220 Vac (+10, -15%), 50 Hz; 60 Hz (±10%)

• Modules used with the RM7800: Q7800A,B Universal Wiring Subbases. R7847, R7848, R7849, R7851, R7852, R7861, or R7886 Flame
• Combustion air flow check: Optional
• Dimensions (mm): 127 mm wide x 127 mm high x 133 mm deep with Q7800A module
• 155 mm deep with Q7800B module
• Approvals: CSA: Certified, File No. LR95329-3.
• Operating temperature: -40 C to +60 C

Function and scope

According to Honeywell’s document (66-2031-3), the EC7823/RM7823 is a microprocessor-based flame detector relay that can be fitted with any 7800 SERIES amplifier to give relay action from one relay with two SPDT circuits when flame is present or not present. Functions include flame monitoring, system status indication, self-diagnostics and troubleshooting.

Honeywell states clearly that it is a flame detector relay only; a suitable primary control must be used to provide the safe-start check, safety lockout, load switching and other functions required in flame safeguard systems.

Compatibility and installation

• The system needs three parts: the EC7823 relay module, a Q7800 wiring subbase (Q7800A panel mount, Q7800B wall or burner mount) and a plug-in flame signal amplifier.
• The amplifiers and flame detectors (R7847, R7848, R7849, R7851, R7861, R7886…) are selected from Table 3 of the Honeywell document according to the detector (flame sensor) type.
• Options: Keyboard Display Module, PC interface, Data ControlBus module, remote display, first-out annunciator; maximum total connected load 2000 VA, 15 A fast-blow fuse.

Approvals and environment

• EC7823 version: Factory Mutual (report J.1.OYOA9.AF). RM7823 version (120 Vac): UL, CSA, Factory Mutual.
• Operating temperature -40°C to +60°C; storage -40°C to +66°C; humidity up to 85% RH non-condensing; vibration 0.5G.
• Honeywell lists the unit as SIL 3 capable.

Information to send for a quote

• The full code EC7823A1004 and the quantity; the supply voltage (EC = 220-240 Vac, RM = 120 Vac).
• The type of flame detector (ionization/flame rod, ultraviolet, infrared) so the matching amplifier and Q7800 subbase can be selected.
• The primary control in use, or to be replaced.