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7800 SERIES EC7895A, RM7895A RELAY MODULE
65-0205
3
Model:
EC7895
Electrical Ratings, see Table 1B:
Voltage and Frequency: 200 Vac (+10/-15%), 50 or 60 Hz
(+/- 10%).
1
Power Dissipation: EC7895: 10W maximum.
Maximum Total Connected Load: 2000 VA.
Fusing Total Connected Load: 20A maximum, type FRN or
equivalent.
Table 1B. EC7895A Terminal Ratings.
1
Range of allowable operating frequency 45 through 66 Hz.
2
The EC7895 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 RM7895 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 that have 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.
3
2000 VA maximum connected load to EC7895 Assembly.
4
Total load current excluding burner/boiler motor and firing rate outputs cannot exceed 5A, 25A inrush.
Terminal No. Description Ratings
G Flame Sensor Ground
Earth G Earth Ground
2
L2 (N) Line Voltage Common
3 Alarm 200 Vac, 1A pilot duty.
4 Burner Motor 200 Vac, 4A at pF = 0.5, 20A inrush
4
5 Line Voltage Supply (L1) 200 Vac (+10/-15%), 50 or 60 Hz (+/- 10%).
3,4
6 Burner Controller and Limits 200 Vac, 1 mA.
7 Airflow Interlock 200 Vac, 9A.
8 Pilot Valve/Ignition 200 Vac, 4A at pF = 0.5, 20A inrush
4
9 Main Fuel Valve 200 Vac, 4A at pF = 0.5, 20A inrush
4
10 Ignition 200 Vac, 4A at pF = 0.5, 20A inrush
4
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 200 Vac, 0.5A