7800 SERIES EC7885A/RM7885A RELAY MODULE
65-0203
2
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering 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 Logistics
Honeywell Inc., 1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386 (612) 951-1000
In Canada—Honeywell Limited/Honeywell Limitée, 155 Gordon Baker Road, North York, Ontario M2H 3N7.
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.
SPECIFICATIONS
Electrical Ratings, RM7885A see Table 1A:
Voltage and Frequency: 100 Vac (+10/-15%), 50 or 60 Hz
(+/- 10%).
2
Power Dissipation: RM7885A: 10W maximum.
Maximum Total Connected Load: 2000 VA.
Fusing: Total Connected Load: 20A maximum, type FRN
or equivalent.
Table 1A. RM7885A Terminal Ratings.
Terminal No.
Description
Ratings
G
Flame Sensor Ground
Earth G
Earth Ground.
1
L2(N)
Line Voltage Common
3
Line Voltage Supply (L1)
100 Vac (+10/-15%), 50 or 60 Hz (+/- 10%).
2,3,4
4
Alarm
100 Vac, 1A pilot duty.
5
Unused
6
Stop Station
100 Vac, 9A.
7
Unused
8
Pilot Valve
100 Vac, 4.5A ignition and 50 VA pilot duty.
4
9
Main Fuel Valve
100 Vac, 2A pilot duty.
5
10
Start Input
100 Vac, 1 mA
F(11)
Flame Sensor
60 to 220 Vac, current limited.
12
Unused
13
Unused
14
Unused
15
Unused
16
Unused
17
Unused
18
Unused
19
Unused
20
Unused
21
Unused
22
Shutter
100 Vac, 0.5A
1
The RM7885A 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 in event of an internal short circuit. The RM7885A needs a low impedance ground connection to the
equipment frame that, 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
Range of allowable operating frequency 45 to 66 Hz.
3
2000 VA maximum connected load to RM7885A Assembly.
4
Can also be 100 Vac, 1A pilot duty.
5
Can also be 65 VA pilot duty with motorized valve, 1150 VA inrush, 460 VA open, 250 VA hold.
