Specifications; Ordering Information - Honeywell 7800 SERIES Manual

RM7890A,B,C
SPECIFICATIONS • ORDERING INFORMATION
ELECTRICAL RATINGS, SEE TABLE 1:
Voltage and Frequency: 120 Vac (+10/-15%), 50 or 60 Hz
2
(+/- 10%).
Power Dissipation: RM7890: 10W maximum.
Maximum Total Connected Load: 2000 VA.
Terminal No.
G
Earth G
L2(N)
3
4
5
6
7
8
9
10
F(11)
12
13
14
15
16
17
18
19
20
21
22
1
The RM7890 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 20A fuse (or breaker) in event of an internal short circuit. The RM7890
needs a low impedance ground connection to the equipment frame which, in turn, needs a low impedance 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.
2
Operating frequency chosen by RM7890 selection.
3
2000 VA maximum connected load to RM7890 Assembly.
4
Can also be 120 Vac, 1A pilot duty.
5
Can also be 65 VA pilot duty with motorized valve, 1150 VA inrush, 460 VA open, 250 VA hold.
When purchasing replacement and modernization products from your 7800 SERIES distributor, refer to the TRADELINE
number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:
1. Your local Home and Building Control Sales Office (check white pages of your phone directory).
2. Home and Building Control Customer Satisfaction
Honeywell Inc., 1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386 (612) 951-1000
In Canada—Honeywell Limited/Honeywell Limitee, 740 Ellesmere Road, Scarborough, Ontario M1P 2V9 International Sales and Service Offices
in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United
Kingdom, U.S.A.
65-0126—2
TABLE 1—TERMINAL RATINGS.
Description
Flame Sensor Ground
1
Earth Ground
Line Voltage Common
Line Voltage Supply (L1)
Alarm
Unused
Burner Controller and Limits
Unused
Pilot Valve/Ignition
Main Fuel Valve
Ignition
Flame Sensor
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Shutter

Specifications

Fusing: Total Connected Load: 20A maximum, type
FRN or equivalent.
ENVIRONMENTAL RATINGS:
Ambient Temperature:
Operating: -40° F to 140° F.
Storage: -60° F to 150° F.
120 Vac (+10/-15%), 50 or 60 Hz (+/- 10%).
120 Vac, 1A pilot duty.
120 Vac, 3A pilot duty or 1A pilot duty, 4.5A ignition.
120 Vac, 4.5A Ignition and 50 VA pilot duty.
120 Vac, 2A pilot duty.
120 Vac, 4.5A ignition.
60 to 220 Vac, current limited.
120 Vac, 0.5A (RM7890B).

Ordering Information

2
Ratings
2,3
4
5
4
®
Catalog for complete ordering