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RM7897A,C 7800 SERIES RELAY MODULES
Terminal Number
G
Earth G
L2(N)
3
4
5
6
7
8
9
10
F(11)
12 to 19
20
21
21
22
a
See Table 2.
b
2000 VA maximum load connected to RM7897A,C Assembly.
c
See Tables 4 and 5.
Combination
Number
Pilot Fuel 8
1
C
2
B
3
a
F
4
F
5
a
F
6
D
7
a
D
8
D
9
a
D
a
RM7897C only, jumper terminals 8 to 9.
A
4.5A ignition
50 VA Pilot Duty plus
4.5A ignition.
32-00158—03
Table 3. Terminal Ratings.
Description
Flame Sensor Ground
a
Earth Ground
Line Voltage Common
Alarm
Burner Motor
Line Voltage Supply (L1)
Burner Controller and Limits
Lockout Interlock
Pilot Valve/Ignition
Main Fuel Valve
Ignition
Flame Sensor
—
PreIgnition Interlock
Interrupted Pilot (RM7897A)
2nd Stage Main Valve (RM7897C) 120 Vac
Shutter
Table 4. Combinations for Terminals 8, 9, 10 and 21.
Main 9
Ignition 10
F
No Load
F
No Load
F
A
F
A
F
A
F
A
D
A
D
A
No Load
A
Table 5. Composition of each Combination.
B
180 VA Ignition plus
motor valves with:
660 VA inrush,
360 VA open,
240 VA hold.
8
—
—
—
120 Vac, 1A pilot duty.
120 Vac, 9.8A AFL, 58.8 ALR (inrush).
120 Vac (+10/-15%), 50 or 60 Hz (±10%).
120 Vac, 1 mA.
120 Vac, 8A run, 43A inrush.
c
120 Vac
c
120 Vac
c
120 Vac
60 to 220 Vac, current limited.
—
120 Vac, 1 mA.
120 Vac
c
120 Vac, 0.5A
Interrupted Pilot Valve
21
(RM7897A Only)
C
B
F
F
F
D
D
D
D
C
D
2A Pilot Duty
Ratings
RM7897A,C
Delayed Main Valve
21 (RM7897C Only)
No Load
No Load
No Load
No Load
F
No Load
D
No Load
D
F
65 VA Pilot Duty plus
motor valves with:
3850 VA inrush,
700 VA open,
250 VA hold.
b
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