Technical description of the burner
13
20019893
GB
3.10 Honeywell control box
APPLICATION
The Honeywell RM7840 ... Relay Modules are microprocessor-
based integrated burner controls for automatically fired gas, oil, or
combination fuel single burner applications. The RM7840 ... Relay
Modules are used for UL/CSA Modulating and FM/IRI
Modulating burner applications. The RM7840 ... system consists of
a Relay Module. Keyboard Display Modules (standard with
RM7800), Dust Cover (standard with RM7840 ...), Subbase,
Amplifier, and Purge Card. Options include Personal Computer
Interface, DATA CONTROLBUS MODULE™, Remote Display
Mounting First-Out Expanded Annunciator and Combustion
System Manager™ Software.
Functions provided by the RM7840 ... include automatic burner
sequencing, flame supervision, system status indication, system or
self-diagnostics and troubleshooting.
SPECIFICATIONS
Electrical ratings
Environmental ratings
Fig. 6
S8158
Wiring subbase
Run/test switch
Configuration jumpers
Purge timer
Relay module
Sequence status led panel
Reset button
Keyboard display
Flame amplifier
Captive mounting
screw
module
MAIN IGN 00:10
Flame Signal 3.5V
Voltage and Frequency:
RM7840 ...—120 Vac (+10/-15%),
50 or 60 Hz (±10%)
Power Dissipation:
RM7840 ...: 10W maximum in the
Run mode
Maximum Total
Connected Load:
2000 VA
Fusing:
15A maximum, Type SC or
equivalent Fast Blow
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
