Honeywell 7800 Series Installation Manual

Relay modules
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RM7885A
7800 SERIES Relay Modules
APPLICATION
The Honeywell RM7885A are microprocessor-based
integrated burner controls for semi-automatically fired
gas, oil, or combination fuel single burner applications.
The RM7885A Relay Modules are intended to replace the
R485B Protectorelay™ Primary Control and the
R4075C,D,E Industrial Flame Safeguard Primary Controls.
The
RM7885A System consists of a relay module, subbase and
amplifier. Options include Personal Computer Interface,
keyboard display module (KDM), Data ControlBus
Module™, remote display mounting, expanded
annunciator and Combustion System Manager
The RM7885A are adaptable to continuous firing, high-
low or modulating firing rate for semi-automatic burner
sequencing.
This document covers the following modules:
RM7885A1015
RM7885A2015
Functions the RM7885A provide include flame
supervision, system status indication, system or self-
diagnostics and troubleshooting.
The RM7885A operates with any of the following types of
ignition:
1. Torch-ignited main burner using the S445A Start-
Stop Station, or any conventional knee- or foot-oper-
ated start-stop station.
2. Torch-ignited pilot using the S445A Start-Stop Sta-
tion, or any conventional knee- or foot-operated
start-stop station.
3. Direct-ignition oil burner or electrically-ignited pilot,
using the S445A Start-Stop Station, which main-
tains electric ignition as long as the Start Switch is
depressed (up to 15 minutes).
This document provides installation and static checkout
instructions. Other applicable publications are:
Form
Number
63-2278
65-0084
65-0090
65-0091
®
Software.
65-0095
65-0097
65-0101
65-0131
65-0229
65-0295
32-00110
32-00160
32-00166
32-00235
SPECIFICATIONS
Electrical Ratings (See Table 3):
Voltage and Frequency:
120 Vac (+10/-15%), 50/60 Hz (± 10%).
Power Dissipation: 10W maximum.
Maximum Total Connected Load: 2000 VA.
Fusing Total Connected Load: 15A maximum, type S/C or
equivalent.
SIL
3
Capable
INSTALLATION INSTRUCTIONS
Description
Q7700A Network Interface Unit Product
Data
Q7800A,B 22-Terminal Wiring Subbase
Product Data
S7800A Keyboard Display Module Product
Data.
S7810A Data ControlBus Module™
Product Data
S7820 Remote Reset Module Product
Data
221729C Dust Cover Packing Sheet
S7830 Expanded Annunciator Product
Data
221818A Extension Cable Assembly
Product Data
7800 SERIES RELAY MODULES Checkout
and Test
NEMA4 covers for 2-line VF KDM,
50023821-001 w/o reset, 50023821-
002 with reset
4-line LCD KDM S7800A2142
Tester for 2000 Series Flame Relays
A7800A2010, (accommodates grounding
pin)
NEMA4 covers for 4-line KDM, 204729A
w/o reset, 204729B with reset
R7824, R7847, R7848, R7849, R7851,
R7861, R7886 Flame Amplifiers for the
7800 SERIES Product Data
32-00215-01
Table of Contents
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Summary of Contents for Honeywell 7800 Series

  • Page 1 This document covers the following modules: 65-0131 221818A Extension Cable Assembly Product Data RM7885A1015 65-0229 7800 SERIES RELAY MODULES Checkout RM7885A2015 and Test Functions the RM7885A provide include flame 65-0295 NEMA4 covers for 2-line VF KDM, supervision, system status indication, system or self- 50023821-001 w/o reset, 50023821- diagnostics and troubleshooting.
  • Page 2: Installation

    RM7885A 7800 SERIES RELAY MODULES Environmental Ratings: IMPORTANT Ambient Temperature: 1. Wiring connections for the relay modules are Operating: -40°F to +140°F (-40°C to +60°C). unique; refer to Fig. 2 or the appropriate Specifica- Storage: -40°F to +150°F (-40°C to +66°C).
  • Page 3: Mounting Wiring Subbase

    RM7885A 7800 SERIES RELAY MODULES Mounting of Remote Keyboard or Series 1000 Relay Modules Reset Module All relay product codes that start with a 1 (example: EC7820A1026/U) can be used with existing subbase To comply with CE EN60730 for remote mounting of the Q7800A1003/U and Q7800A1005/U.
  • Page 4 RM7885A 7800 SERIES RELAY MODULES 1. For proper subbase wiring and sequence chart, refer 8. For KDM, because the KDM is powered from a low to Fig. 2. For other possible wiring hookups, see Fig. voltage, energy limited source, it can be mounted 3 through 6.
  • Page 5 RM7885A 7800 SERIES RELAY MODULES (HOT) TEST FLAME SIGNAL JACK MICROCOMPUTER PLUG-IN RESET FLAME TEST PUSH- AMPLIFIER BUTTON RELAY RELAY STATUS DRIVE FEEDBACK CIRCUIT AND LINE VOLTAGE INPUTS CONTROL SAFETY RELAY POWER SUPPLY POWER CIRCUIT PILOT STATUS LED S445A START...
  • Page 6 RM7885A 7800 SERIES RELAY MODULES Table 2. Recommended Grounding Practices. Ground Type Recommended Practice Earth ground (subbase and relay Use to provide a connection between the subbase and the control panel of the module). equipment. Earth ground must be capable of conducting enough current to blow the 15A fuse (or breaker) in the event of an internal short circuit.
  • Page 7 RM7885A 7800 SERIES RELAY MODULES Q7800 DPST ALARM SILENCING (L1) SWITCH ALARM S445A START-STOP STATION STOP LIMITS INTERNAL JUMPER INTERMITTENT START PILOT MAIN FUEL VALVE(S) IGNITION FOR DIRECT SPARK IGNITION FLAME DETECTOR (HOT) (OIL OR GAS) MASTER MAIN VALVE SWITCH...
  • Page 8 RM7885A 7800 SERIES RELAY MODULES Q7800 DPST ALARM (L1) SILENCING SWITCH ALARM R482B S445A START-STOP STATION STOP LIMITS INTERNAL JUMPER INTERMITTENT START PILOT FUEL CONTROLLER PRESSURE SWITCH LOW FIRE MOTOR MANUAL END SWITCH VALVE IGNITION FLAME DETECTOR HI-LO OR MODULATING...
  • Page 9 RM7885A 7800 SERIES RELAY MODULES Q7800 Q7800 DPST ALARM DPST ALARM (L1) (L1) SILENCING SILENCING SWITCH SWITCH ALARM ALARM S445A S445A START-STOP START-STOP STATION STATION STOP STOP LIMITS INTERNAL INTERNAL JUMPER JUMPER IGNITION IGNITION START START LIMITS INTERMITTENT INTERMITTENT PILOT...
  • Page 10 RM7885A 7800 SERIES RELAY MODULES Q7800 PILOT MOTOR DPST ALARM (L1) SILENCING GANGED 3 POLE SWITCH DOUBLE THROW SWITCH ALARM R482B R482B S445A START-STOP STATION STOP LIMITS INTERNAL JUMPER START IGNITION FUEL FUEL PRESSURE PRESSURE SWITCH SWITCH LOW FIRE MOTOR...
  • Page 11: Final Wiring Check

    RM7885A 7800 SERIES RELAY MODULES Q7800 (L1) ALARM S445A START-STOP STATION STOP LIMITS INTERNAL JUMPER INTERMITTENT START PILOT MAIN FUEL VALVE(S) IGNITION FLAME DETECTOR (HOT) FOR DIRECT SPARK IGNITION MASTER (OIL OR GAS) SWITCH MAIN VALVE 120 VAC, 50/60 HZ (RM7885A); 220-240 VAC, 50/60 HZ (EC7885A) POWER SUPPLY.
  • Page 12: Equipment Recommended

    RM7885A 7800 SERIES RELAY MODULES 3. For each test, open the master switch and install the CAUTION jumper wire(s) between the subbase wiring termi- nals listed in the Test Jumpers column. Electrical Surge Hazard. 4. Close the master switch before observing operation.
  • Page 13 RM7885A 7800 SERIES RELAY MODULES Table 4. Terminal Ratings. Terminal No. Description Ratings Flame Sensor Ground — Earth G — Earth Ground L2(N) Line Voltage Common — Line Voltage Supply (L1) 120 Vac (+10/-15%), 50/60 Hz, ±10%). Alarm 120 Vac, 1A pilot duty.
  • Page 14: Principal Technical Features

    RM7885A 7800 SERIES RELAY MODULES 4. Mount the RM7885A by aligning the four L-shaped Initiate corner guides and knife blade terminals with the The RM7885A enters the INITIATE sequence when the bifurcated contacts on the wiring subbase and relay module is initially powered. The RM7885A can also...
  • Page 15: Safety And Security

    RM7885A 7800 SERIES RELAY MODULES Q7800A1005 (plastic panel mount version) H O N E Y W E LL RELAY MODULE SEQUENCE STATUS LED PANEL POWE R RESET PILOT BUTTON FLAM E MAIN ALARM CAPTIVE RESE T MOUNTING SCREW DUST COVER...
  • Page 16 RM7885A 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...

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