INSTALLATION INSTRUCTIONS
66-1151
RM7897A1002, RM7897C1000
7800 SERIES
Relay Modules
APPLICATION
The RM7897A,C are microprocessor-based integrated burner
controls for automatically fired gas, oil, or combination fuel
single burner applications. The RM7897A,C system consist of
a relay module, subbase, amplifier, and purge card. Options
include keyboard display module (KDM), Personal Computer
Interface, Data ControlBus™ Module, remote display
mounting, Expanded Annunciator and Combustion System
Manager® Software.
Functions provided by the RM7897A,C include automatic
burner sequencing, flame supervision, system status
indication, system or self-diagnostics and troubleshooting.
The RM7897 adds a proof of closure input to the standard
primary control function of the RM7895/RM7896 product. It
adds a blinking fault code function to the POWER LED on
Alarm shutdown. It also adds programmable postpurge using
the S7800A1142 Keyboard Display Module (KDM). The
RM7897A1002 offers selectable pilot operation, intermittent
on terminal 8 or interrupted on terminal 21.
The RM7897C1000 offers interrupted pilot and delayed main
valve for 2-step firing (Low-High-Low) applications.
This document provides installation and static checkout
instructions. Other applicable publications are:
SPECIFICATIONS
Electrical Ratings (See Table 3):
Voltage and Frequency:
RM7897A,C: 120 Vac (+10/-15%), 50/60 Hz (± 10%).
Power Dissipation: 10W maximum.
Maximum Total Connected Load: 2000 VA.
Fusing Total Connected Load: 15A Fast Blow, 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.
Approvals:
Underwriters Laboratories Inc. Listed: File No. MP268,
Guide No. MCCZ.
Canadian Standards Association Certified: Pending.
Factory Mutual Approved: Report No. Pending.
IRI Acceptable.
Federal Communications Commission: Part 15, Class B,
Emissions.
Publication
No. Product
63-2278 Q7700 Network Interface Unit Product Data
65-0084 Q7800A,B 22-Terminal Wiring Subbase
Product Data
65-0288 S7800A1142 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 Installation
Instructions
65-0101 S7830 Expanded Annunciator Product Data
65-0102 ZM7850A Combustion System Manager™
Operating Instructions
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.
65-0092 QS7800A ControlBus™ Module, Standard
65-0227 QS7800B ControlBus™ Module, Multidrop
Publication
No. Product
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