Honeywell 7800 SERIES, Installation Manual, Page: 1 / 16

INSTALLATION INSTRUCTIONS
32-00215-01
SIL 3
Capable
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
®
Software.
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:
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.
Form
Number Description
63-2278 Q7700A Network Interface Unit Product
Data
65-0084 Q7800A,B 22-Terminal Wiring Subbase
Product Data
65-0090 S7800A Keyboard Display Module Product
Data.
65-0091 S7810A Data ControlBus Module™
Product Data
65-0095 S7820 Remote Reset Module Product
Data
65-0097 221729C Dust Cover Packing Sheet
65-0101 S7830 Expanded Annunciator Product
Data
65-0131 221818A Extension Cable Assembly
Product Data
65-0229 7800 SERIES RELAY MODULES Checkout
and Test
65-0295 NEMA4 covers for 2-line VF KDM,
50023821-001 w/o reset, 50023821-
002 with reset
32-00110 4-line LCD KDM S7800A2142
32-00160 Tester for 2000 Series Flame Relays
A7800A2010, (accommodates grounding
pin)
32-00166 NEMA4 covers for 4-line KDM, 204729A
w/o reset, 204729B with reset
32-00235 R7824, R7847, R7848, R7849, R7851,
R7861, R7886 Flame Amplifiers for the
7800 SERIES Product Data