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EC7820A
7800 SERIES Relay Modules
APPLICATION
The Honeywell EC7820 is a microprocessor-based
integrated burner control for automatically fired gas, oil, or
combination fuel single burner atmospheric with fan
(EC7820A) applications. The EC7820 Relay Module
system consists of a relay module, wiring subbase,
amplifier, and purge card. Options include: keyboard
display module (KDM), Data ControlBus Module™, remote
display mounting and Modbus™ Module.
Functions provided by the relay modules include
automatic burner sequencing, flame supervision, system
status indication, system or self diagnostics and
troubleshooting.
This document covers the following 7800 Series Relay
Modules:
EC7820A1026/U
EC7820A2026/U
This document provides installation and static checkout
instructions. Other applicable publications are:
Form
Number
32-00110 S7800A2142 4-line LCD Keyboard Display
Module Product Data
32-00166 204729A/C KDM NEMA4 Covers for 4-line
LCD KDM
32-00235 R7824, R7847, R7848, R7849, R7851, R7861,
R7886 Flame Amplifiers for the 7800 SERIES
Product Data (for CE, Modbus module
S7810M1029 only)
65-0084
Q7800A,B 22-Terminal Wiring Subbase
Product Data
65-0089
ST7800A Plug-In Purge Timer Installation
Instructions.
65-0090
S7800A Keyboard Display Module Product
Data.
65-0091
S7810A Data ControlBus Module™ Product
Data
65-0097
221729C Dust Cover Packing Sheet.
Description
SIL
3
Capable
0063
INSTALLATION INSTRUCTIONS
Form
Number
65-0131
221818A Extension Cable Assembly Product
Data
65-0229
7800 SERIES Relay Modules Checkout and
Test
65-0249
S7810M ModBus Module (For CE , Modbus
module S7810M1029 only).
65-0295
50023821-001/2 KDM NEMA4 Covers for
classic 2-line VFD KDM
Electrical Ratings, See Table 4:
Voltage and Frequency: 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.
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.
SIL 3 Capable:
SIL 3 Capable in a properly designed Safety Instru-
mented System. See form number 65-0312 for Cer-
tificate Agreement.
Approvals
Federal Communications Commission:
Part 15, Class B, Emissions.
Exida: IEC/EN 61508:2010 Parts 1-7, SIL 3 capable.
AGA Certificate # 5097
EAC Russia
Description
32-00197-01

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Table of Contents

   Also See for Honeywell 7800 Series

   Related Manuals for Honeywell 7800 Series

   Summary of Contents for Honeywell 7800 Series

  • Page 1: Specifications

    Functions provided by the relay modules include automatic burner sequencing, flame supervision, system status indication, system or self diagnostics and SPECIFICATIONS troubleshooting. This document covers the following 7800 Series Relay Electrical Ratings, See Table 4: Modules: Voltage and Frequency: 220-240 Vac (+10/-15%), 50/ EC7820A1026/U 60 Hz (±10%).
  • Page 2 To comply with EN60730 for remote mounting of age) wiring. the display and/or remote reset, provide electrical 4. Loads connected to the 7800 SERIES Relay Mod- separation using insulation at least equivalent to ule must not exceed those listed on the 7800 double or use reinforced insulation.
  • Page 3 Q7800B2003/U and will not be backward compatible with net. Be sure to allow adequate clearance for service, any Q7800A1003/U and Q7800A1005/U subbases installation, access or removal of the 7800 SERIES already installed in the field. Relay Module, KDM, flame amplifier, flame amplifier...
  • Page 4 Module™, Modbus Module or Remote Reset 10. Make sure loads do not exceed the terminal ratings. Module lead wires in conduit with line voltage Refer to the label on the 7800 SERIES Relay Module circuits. or to the ratings in Table 3.
  • Page 5 220-240 Vac, 0.25A See Table 2. 2000 VA maximum connected load to 7800 SERIES Relay Module Assembly. Total load current, excluding burner/boiler motor and firing rate outputs, cannot exceed 5A, 25A inrush. Can also be 24 Vac, 3A at P.F. = 0.5.
  • Page 6 SERIES Relay Module. A separate power supply cir- Do not perform a dielectric test with the 7800 SERIES cuit may be required for the 7800 SERIES Relay Relay Module installed. Internal surge protectors break Module.
  • Page 7 EC7820A 7800 SERIES RELAY MODULES Table 4. EC7820 Static Checkout. Test Test Normal Operation If Operation is Abnormal, Check Jumpers Voltmeter the Items Listed Below None 5-L2 Line voltage at terminal 5. Master Switch. Power connected to master switch. 3. Overload protection (fuse, circuit...
  • Page 8 EC7820A 7800 SERIES RELAY MODULES HOT N 220-240 Vac, 50/60 Hz PLUG-IN PURGE CONFIGURATION TIMER CARD JUMPERS TEST FLAME SIGNAL JACK RUN/TEST SWITCH PLUG-IN MICROCOMPUTER FLAME AMPLIFIER RESET SHUTTER PUSHBUTTON RELAY DRIVE CIRCUIT RELAY STATUS FEEDBACK AND LINE VOLTAGE INPUTS...
  • Page 9 EC7820A 7800 SERIES RELAY MODULES Q7800 LEGEND FIRING RATE ALARM CONTROLLER MOTOR COMMON (NORMALLY OPEN) LOW FIRE SWITCH MODULATE INPUT PREIGNITION INTERLOCK INPUT BURNER/BLOWER MOTOR (L1) IGNITION LINE VOLTAGE SUPPLY LOCKOUT INPUT AIRFLOW SWITCH INPUT MAIN FUEL VALVE PILOT VALVE 1...
  • Page 10 EC7820A 7800 SERIES RELAY MODULES MOUNTING RELAY MODULE IMPORTANT Install the 7800 SERIES Relay Module with a plug- in motion rather than a hinge action. 1. Mount the 7800 SERIES RElay Module vertically on the Q7800 Subbase, or mount horizontally with the 4.
  • Page 11 EC7820A 7800 SERIES RELAY MODULES Safety Shutdown (Lockout) 6. Pilot valve/intermittent pilot valve terminal is not energized. Occurs If: 7. Main valve terminal is energized. 8. Internal system fault. 9. Purge card is removed. INITIATE Period: 10. Purge card is defective.
  • Page 12 Standby one or two seconds, depending on the Flame Failure Response Time (FFRT) of the The 7800 SERIES Relay Module is ready to start an amplifier. Thus, second safety time is operating sequence when the operating control defined as MAIN TRIAL time plus FFRT of determines a call for heat is present.
  • Page 13 3. During Run, the Run/Test Switch, when placed in the TEST position, drives the firing rate motor to the OPEN position. NOTE: When the 7800 SERIES Relay Module is switched to the TEST mode, it stops and holds at the next Run/Test Switch point in the operating sequence.
  • Page 14 EC7820A 7800 SERIES RELAY MODULES SAFETY AND SECURITY Physical device protection Device shall be accessible to authorized personnel only – Installation on publicly accessible places is not recommended as this could lead to unwanted and potentially unsafe changes to device (wiring, configuration, etc).
  • Page 15 EC7820A 7800 SERIES RELAY MODULES 32-00197—01...
  • Page 16 EC7820A 7800 SERIES RELAY MODULES For More Information The Honeywell Thermal Solutions family of products includes Honeywell Combustion Safety, Eclipse, Exothermics, Hauck, Kromschröder and Maxon. To learn more about our products, visit ThermalSolutions.honeywell.com or contact your Honeywell Sales Engineer. Honeywell Process Solutions...

This manual is also suitable for:

Ec7820a1026/uEc7820aEc7820a2026/u

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