Honeywell RM7840L User Manual

RM7840E,G,L,M
SPECIFICATION
SEQUENCE TIMING FOR NORMAL OPERATION
Post Firing Energy Approval
Flame Establishing Period Purge Interlock Rate Saving Code
Device Initiate Standby Purge Pilot Main Run Timing Circuits Circuit Prepurge Bodies
RM7840E 10 sec. * ** 4 or 10 sec. 10 or 15 sec. * 15 sec. Preignition, 4-wire Yes FM/IRI
Lockout, modulating Modulating
High and
Low Fire
RM7840G 10 sec. * ** 4 or 10 sec. 10, 15 sec. or * 15 sec. Preignition, No UL/CSA
Intermittent Running, Modulating
Low Fire
RM7840L 10 sec. * ** 4 or10 sec. 10 or 15 sec. * 15 sec. Preignition, No FM/IRI
Lockout, Modulating
High and
Low Fire
RM7840M 10 sec. * ** 4 or 10 sec. 10 sec. or * 15 sec. Preignition, 2-wire No UL/CSA
Intermittent Running, isoltated On-Off
Low Fire On-Off-On
contacts
* STANDBY and RUN can be an infinite time period.
** PURGE will be determined by which ST7800A purge card is selected.
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The MFEP will be determined by which terminal used, configuration jumper selected or jumper wire added, see
Figs. 7, 8, 9, 10, and 21.
APPROVAL BODIES:
Underwriters Laboratories Inc. listed, File No. MP268,
Guide No. MCCZ.
Canadian Standards Association certified, LR9S329-
3.
Factory Mutual approved: Report No. J11V9A0.AF.
IRI acceptable.
Federal Communications Commission: Part 15, Class
B—Emissions.
Communication Interface Base Unit—part no.
Q7700A1014.
Communication Interface ControlBus Module—
part no. QS7800A1001.
DATA CONTROLBUS MODULE™—part no.
S7810A1009.
Dust Cover—part no. 221729A.
Expanded Annunciator—part no. S7830A1005.
Flame Simulators:
part no. 203659 UV Flame Simulator.
part no. 123514A Rectification Simulator.
Keyboard Display Module—part no. S7800A1001.
Remote Display Mounting Bracket—part no.
203765.
Remote Display Power Supply—part no. 203968A
Plug-in.
Remote Reset Module—part no. S7820A1007.
Sixty-inch Cable Assembly—part no. 221818A.
Tester—part no. A7800A1002.
4
MOUNTING: Q7800A for panel mount or Q7800B for
wall or burner mount.
REQUIRED COMPONENTS:
Plug-in Flame Signal Amplifier, see Table 2.
Plug-in Purge Timer Cards: selectable ST7800A: two
seconds to 30 minutes.
Q7800A or Q7800B
ACCESSORIES:
Optional:
ControlBus 5-Wire Electrical Connector—part no.
203541.
COMBUSTION SYSTEM MANAGER
™
—part no.
ZM7850A1001.
Fig. 1—Mounting dimensions of RM7840 Relay Module and Q7800A Subbase, in inches [millimeters].
POWER
PILOT
FLAME
MAIN
ALARM
RESET
5
[127]
5 [127]
M5003A
5 [133]
1
4
BURNER CONTROL
REMOVE ONLY FOR TERMINAL TEST ACCESS.
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1

Honeywell RM7840L Specifications

General

Brand	Honeywell
Model	RM7840L
Category	Control Unit
Language	English