Honeywell 7800 Series Operating Instructions Manual page 5

3.5.3 table 3. terminal Ratings.
terminal number
G
Earth G
L2(N)
3
4
5
6
7
8
9
10
F(11)
12 to 21
22
a The RM/EC7890 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 fuse (or breaker) in event of an internal short
circuit. The RM/EC7890 needs a low impedance ground connection to the equipment frame which, in turn, needs a low impe-
dance connection to earth ground. For a ground path to be low impedance at RF frequencies, the connection must be made with
minimum length conductors having maximum surface areas. Wide straps or brackets rather than leadwires are preferred. Be careful
to verify that mechanically tightened joints along the ground path, such as pipe or conduit threads or surfaces held together with
fasteners, are free of nonconductive coatings and are protected against mating surface corrosion.
b 2000 VA maximum connected load to the RM/EC7890 Assembly.
c See Tables 4 and 5 for device load combinations.
d Requires 220-240 to 120 Vac, 10 Va minimum stepdown transformer to drive the shutter. Not applicable for C7061A1020,
C7061A1079, C7061F1003 or C7061F1011-N.
3.5.4 table 4. Combinations for terminals 8, 9, and 10.
Pilot Fuel 8
C
B
F
F
D
D
D
A
50 VA Pilot Duty plus
4.5A ignition
Description
Flame Sensor Ground
Earth Ground a
Line Voltage Common
Line Voltage Supply (L1)
Alarm
Unused
Burner Controller and Limits
Unused
Pilot Valve/Ignition.
Main Fuel Valve.
Ignition
Flame Sensor
Unused.
Shutter
B
180 VA ignition plus motor
valves with: 660 VA inrush,
4.5A ignition.
360 VA open, 250 VA hold.
Ratings (RM7890A,B,C)
–
–
–
120 Vac (+10%/-15%), 50 or
60 Hz (±10%). b
120 Vac, 1A pilot duty.
–
120 Vac, 8A run, 43A inrush.
–
120 Vac. c
120 Vac. c
120 Vac, 4.5A ignition.
60 to 220 Vac, current limited.
–
120 Vac, 0.5A (RM7890B).
Main 9
F
F
F
No Load
F
D
No Load
C D
2A Pilot Duty.
EN-5
Ratings (eC7890B)
–
–
–
220-240 Vac (=10%/-15%), 50
or 60 Hz (±10%).
220-240 Vac, 1A pilot duty.
–
220-240 Vac, 5A (maximum).
–
220-240 Vac, 4A at P.F. = 0.5,
20A inrush.
220-240 Vac, 4A at P.F. = 0.5,
20A inrush.
c 220-240 Vac, 4A at P.F. = 0.2.
60 to 220 Vac, current limited.
–
220-240 Vac (EC7890B only).
Ignition 10
No Load
No Load
A
A
A
A
A
F
65 VA Pilot Duty plus motor
valves with: 3850 VA inrush,
700 VA Open, 250 VA hold.
d