R7140G,L,M BURNER CONTROL MODULES
66-1153—2
4
Fig. 2. Mounting dimensions of R7140G,L,M Burner Control Module with Q520A Subbase, in in. (mm).
a
The R7140 must have an earth ground providing a connection between the subbase and the control panel or the equipment. The earth
ground wire must be capable of conducting the current to blow the 15A fast blow fuse (or breaker) in the event of an internal short
circuit. The R7140 needs a low impedance ground connection to the equipment frame, which, in turn, needs a low impedance
connection to earth ground.
Table 3. Terminal Ratings.
Terminal No.
Description
Ratings
G
Flame Sensor Earth Ground
a
—
Earth G
Earth Ground
a
—
L2(N)
Line Voltage Common
—
L1
Line Voltage Supply (L1)
120 Vac (+10/-15%), 50 or 60 Hz (±10%).
3
Lockout/Running Interlock
120 Vac, 8A run, 43A inrush.
4
Pre-Ignition Interlock Input
120 Vac, 1 mA.
5
Pilot Valve/Ignition
120 Vac. See Table 4.
6
Interrupted/Intermittent Pilot Valve/First Stage Oil Valve 120 Vac. See Table 4.
7
Main Fuel Valve
120 Vac. See Table 4.
8
Burner Motor
120 Vac, 9.8 AFL, 58.8 ALR (inrush).
9
Alarm
120 Vac, 1A pilot duty.
10
Firing Rate High Fire
120 Vac, 75 VA pilot duty.
11
Firing Rate Common
120 Vac, 75 VA pilot duty.
12
Firing Rate Modulate
120 Vac, 75 VA pilot duty.
13
Low Fire Switch Input
120 Vac, 1 mA.
14
Firing Rate Low Fire
120 Vac, 75 VA pilot duty.
15
High Fire Switch Input
120 Vac, 1 mA.
16
Burner Controller and Limits
120 Vac, 1 mA.
17
Shutter
120 Vac, 0.5A.
18
Ignition
120 Vac,
4.5A ignition.
F
Flame Sensor
60 to 220 Vac, current limited.
5-3/4 (146)
1-1/4
(32)
RESET
POWER
PILOT
FLAME
MAIN
ALARM
S
_
+
5
(127)
5
(127)
7
(177)
6-5/32
(156)
BURNER CONTROL
M22604