R7120M 7800 SERIES
Relay Modules
APPLICATION
The R7120M is a microprocessor-based functional plug in
replacement for the Fireye M Series system utilizing the
existing wiring subbase. The R7120M is an integrated control
for automatically fired gas, oil, or combination fuel single
burner, on/off applications. The R7120M system consists of a
relay module, amplifier, and purge card. Options include
keyboard display module (KDM), Data ControlBus™ Module,
remote display mounting. See the Honeywell Primary Control
Cross Reference (form number 95-6855 available on web site
www.customer.honeywell.com) for correct parts and feature
selection options.
Functions provided by the R7120M include automatic burner
sequencing, flame supervision, system status indication,
system or self-diagnostics and troubleshooting.
The R7120 adds a blinking fault code function to the POWER
LED on Alarm shutdown, and programmable postpurge using
the S7800A1142 Keyboard Display Module (KDM).
The R7120M1001 has intermittent pilot for Fireye M1, M2 and
M3 controller. The R7120M1019 offers interrupted pilot for
Fireye M5 controller.
This document provides installation and system checkout
instructions. Other applicable publications are:
Publication
No.
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
65-0109
R7824, R7847, R7848, R7849, R7851,
R7852, R7861, R7886 Flame Amplifiers for
the 7800 Series Product Data
65-0131
221818A Extension Cable Assembly
Product Data
65-0249
S7810M ModBUS Module
Product
INSTALLATION INSTRUCTIONS
SPECIFICATIONS
Electrical Ratings (See Table 3):
Voltage and Frequency:
R7120M: 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:
cULus component listed: File No. MP268, Guide No.
MCCZ.
Federal Communications Commission: Part 15, Class B,
Emissions.
Required Components for operation (order separately):
Choose based on configuration of the Fireye Control being
replaced (see form 95-6855 for assistance):
Purge Timer
Flame Amplifier
Flame Detector
Provided parts:
1 adapter plate
2 screws (1/4 in. long 8-32 flathead Phillips)
1 leadwire for grounding
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow them
could damage the product or cause a hazardous
condition.
2. Check the ratings given in the instructions and marked
on the product to make sure the product is suitable for
the application.
3. Installer must be a trained, experienced, flame
safeguard service technician.
66-1193EF-01