Honeywell RM7840L User Manual

RM7840E,G,L,M
WIRING • ASSEMBLY
15 65-0087—2
Fig. 10—Wiring RM7840M.
MOUNTING RM7840
NOTE: For installation dimensions, see Figs. 1 or 2.
RELAY MODULE MOUNTING
1. Mount the RM7840 vertically, see Figs. 11 or 12, or
mount horizontally with the knife blade terminals pointing
downward. When mounted on the Q7800A, the RM7840
must be in an electrical enclosure.
2. Select the location in the electrical enclosure. Be sure
to allow adequate clearance for servicing, installation and
removal of the RM7840, Dust Cover , flame amplifier, flame
amplifier signal voltage probes, electrical signal voltage
probes and electrical connections.
a. Allow an additional two inches below the RM7840
for the flame amplifier mounting.
b. Allow an optional three-inch minimum to both sides
of the RM7840 for electrical signal voltage probes.
Assembly
M1980B
G
L
2
3
4
5
6
7
8
9
1
0
F
(L1
)
1
3
1
4
1
5
1
6
1
7
1
8
1
9
2
0
2
1
2
2
1
2
RUNNING INTERLOCKS
(INC. AIR FLOW SWITCH)
MASTER
SWITCH
LOW FIRE
START SWITCH
5 SECOND IGNITION
(EARLY SPARK
TERMINATION)
MAIN FUEL
VALVE(S)
BURNER
CONTROLLER/LIMITS
BURNER MOTOR
(BLOWER)
COMMON
MODULATE
120V ALARM
10 SEC. INTERRUPTED
PILOT/IGNITION
PREIGNITION
INTERLOCK
DAMPER
MOTOR
RECTIFYING FLAME
ROD, RECTIFYING
PHOTOCELL, OR INFRA-
RED (LEAD SULFIDE)
FLAME DETECTOR
C7027A, C7035A, OR
C7044A ULTRAVIOLET
FLAME DETECTOR
C7012A,C,E,F OR
C7076A,D ULTRAVIOLET
FLAME DETECTOR
120V, 60 Hz POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
WHEN NO DAMPER MOTOR OR LOW FIRE SWITCH IS USED, JUMPER TERMINAL 14 TO TERMINAL 18, AND DO NOT
WIRE TERMINAL 15.
DO NOT WIRE TO ANY UNUSED TERMINALS.
FOR DIRECT SPARK IGNITION (OIL
OR GAS)
IGNITION
TRANSFORMER
2ND STAGE
FUEL VALVE
(OPTIONAL)
L1
(HOT)
L2
1
OR
OR
BLUE
BLUE
WHITE
YELLOW
L2
WHITE
WHITE
BLACK
BLACK
L1
L2
2
1
9
1
0
L
2
1
Q7800
INTERMITTENT
PILOT
1ST STAGE
FUEL VALVE
T
O
2
2
2
2
3
3

Honeywell RM7840L Specifications

General

Brand	Honeywell
Model	RM7840L
Category	Control Unit
Language	English