Honeywell RM7840L User Manual

RM7840E,G,L,M
INSTALLATION
10
CONFIGURATION
JUMPERS
MICROCOMPUTER
RESET
PUSHBUTTON
RUN/TEST
SWITCH
STATUS LEDs
PLUG-IN PURGE
TIMER CARD
SAFETY RELAY
CIRCUIT
POWER SUPPLY
KEYBOARD
DISPLAY MODULE
HIGH FIRE
COMMON
MODULATE
LOW FIRE
HIGH FIRE SWITCH
PLUG-IN
FLAME
AMPLIFIER
RELAY
DRIVE
CIRCUIT
CONTROL
POWER
TEST
JACK
REMOTE
RESET
DDL
DDL
COMMUNICATIONS
INDICATES FEEDBACK SENSING
TO RELAY STATUS FEEDBACK
AND LINE VOLT INPUTS
FIELD WIRING
INTERNAL WIRING
IGNITION
PILOT
PILOT/V2
MAIN VALVE
1K
9K
RELAY
STATUS
FEEDBACK
AND LINE
VOLTAGE
INPUTS
LIMITS CONTROLLER
RUNNING/
LOCKOUT
INTERLOCK
PRE-IGNITION
INTERLOCK
1K1
2K1
5K1
8K1
8K2
9K1
9K2
120 Vac
FLAME SIGNAL
TEST
LOW FIRE SWITCH
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
RS485
1
2
3
L1
(HOT)
L2
4
6
20
7
4K1
7K1
2K2
10
8
21
9
18
19
8K
7K
6K
5K
4K
3K
2K
F
G
22
1
BLOWER
6K1
5
ALARM
3K1
3
L2
12
13
15
14
1
M1925
Fig. 6—Internal block diagram of RM7840 (see Figs. 7, 8, 9 or 10 for detailed wiring instructions).
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 your
application.
3. Installer must be a trained, experienced, flame safe-
guard service technician.
4. After installation is complete, check out the product
operation as provided in these instructions.
Installation
WARNING
FIRE OR EXPLOSION HAZARD
CAN CAUSE PROPERTY DAMAGE,
SERVERE INJURY, OR DEATH
To prevent possible hazardous burner operation,
verification of safety requirements must be per-
formed each time a control is installed on a
burner.
!

Honeywell RM7840L Specifications

General

Brand	Honeywell
Model	RM7840L
Category	Control Unit
Language	English