Honeywell RM7897C Installation Instructions Manual

RM7897A,C 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: 2-line VFD (see
document 65-0090) or 4-line LCD (see document 32-
00110) Keyboard Display Module, Data ControlBus™
Module, remote display mounting, Expanded Annunciator
or Modbus module.
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.
The RM7897C1018 has 4 second MFEP (main flame
establishing period).
The RM7897C1026 provides a special recycle function for
configuration of Jumper JR2:
— JR 2 intact: Recycle on loss of flame.
— JR2 clipped: If flame loss occurs during the first 15
seconds in the Run period, then lockout occurs. If
flame loss occurs after 15 seconds into the Run
period, then recycle.
Factory default for Post Purge time: 15 seconds.
SIL
Capable
3
INSTALLATION INSTRUCTIONS
This document provides installation and static checkout
instructions. Other applicable publications are:
Publication
No.
32-00110 S7800A2142 4-line LCD Keyboard Display
Module 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
65-0109 R7824, R7847, R7848, R7849, R7851,
R7852, 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.
This document covers the following 7800 Series Relay
Modules:
• RM7897A1002
• RM7897A2002
• RM7897C1000
• RM7897C2000
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).
Product
32-00158-03