INSTALLATION INSTRUCTIONS
32-00199-01
RM7838C1020 and
RM7838C2020 only
RM7838B,C
7800 SERIES Relay Module
APPLICATION
The Honeywell RM7838B,C is a microprocessor based
integrated burner control for industrial process
modulating semiautomatically fired gas, oil, coal or
combination fuel single burner applications. The
RM7838B,C System consists of a relay module, wiring
subbase, keyboard display module (KDM), amplifier, and
purge card. Options include Data ControlBus Module™,
remote display mounting, and first-out expanded
annunciator.
Functions provided by the RM7838B,C include automatic
modulated High Fire and Low Fire proven Purge, burner
pilot startup with pilot valve hold, a special pilot valve hold
from the Run condition, flame supervision, system status
indication, system or self-diagnostics and
troubleshooting.
The RM7838C differs from the RM7838B as follows:
1. Alarms only on Safety Shutdown.
2. Requires ST7800C Purge Timer.
3. C1004 has 15 second MFEP. C1020 has 5 second
MFEP.
This document covers the following 7800 Series Relay
Modules:
RM7838C1020
RM7838C2020
RM7838C1004
RM7838C2004
RM7838B1013
RM7838B2013
This document provides installation and static checkout
instructions. Other applicable publications are:
SPECIFICATIONS
Electrical Ratings (See Table 4):
Voltage and Frequency: 120 Vac (+10/-15%),
50/60 Hz (±10%).
Power Dissipation:
RM7838B,C: 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, noncon-
densing.
Vibration: 0.5G environment.
SIL 3 Capable:
SIL 3 Capable in a properly designed Safety Instrumented
System. See form number 65-0312 for Certificate
Agreement.
Form
Number Description
32-00110 S7800A2142 4-line LCD Keyboard Display
Module Product Data
32-00166 204729A/C KDM NEMA4 Covers for 4-line
LCD KDM
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.
65-0101 S7830 Expanded Annunciator Product Data.
65-0109 R7824, R7847, R7848, R7849, R7851, R7861,
R7886 Flame Amplifiers for the 7800 SERIES
Product Data.
65-0131 221818A Extension Cable Assembly Product
Data
65-0229 7800 Series Relay Modules Checkout and
Troubleshooting Product Data
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
Form
Number Description
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