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EC7823A;RM7823A 7800 SERIES RELAY MODULES

7

66-1086—2

OPERATION

Sequence of Operation

The EC/RM7823A has the following operating sequences, 

see Fig.4 and Table 5. The EC/RM7823A LED provide 

positive visual indication of the program sequence: POWER, 

FLAME and ALARM.

Fig. 4. Sequence status LEDs.

Table 5. LED sequence status display information.

Standby

The EC/RM7823A is ready to respond to sensing of a flame or 

flame simulating condition. The green POWER LED blinks 

every four seconds, indicating that the relay module is doing 

internal hardware checks. 

Run

The EC/RM7823A pulls in the internal dpdt relay and turns on 

the FLAME LED when a flame or flame simulating condition 

exists. The relay module is now in the Run sequence.

Static Checkout

After checking all wiring, perform this checkout before 

installing the EC/RM7823A on the subbase. These tests verify 

the Q7800 Wiring Subbase is wired correctly, and the external 

controllers, limits, interlocks, actuators, valves, transformers, 

motors and other devices are operating properly. 

WARNING

Explosion and/or Electrical Shock Hazard.

Can cause serious injury, death or equipment 

damage.

1. Close all manual fuel shutoff valve(s) before starting 

these tests. 

2. Use extreme care while testing the system. Line 

voltage is present on most terminal connections 

when power is on.

3. Open the master switch before installing or 

removing a jumper on the subbase. 

4. Before continuing to the next test, be sure to 

remove test jumper(s) used in the previous test. 

5. Replace all limits and interlocks that are not 

operating properly. Do not bypass limits and 

interlocks.

CAUTION

Equipment Damage Hazard.

Improper testing will cause serious internal 

damage.

Do not perform a dielectric test with the EC/RM7823A 

installed. Internal surge protectors can break down 

and conduct a current. This can cause the 

EC/RM7823A to fail the dielectric test or possibly 

destroy the internal lightning and high current 

protection. 

Equipment Recommended

1.

Voltmeter (1M ohm/volt minimum sensitivity) set on the 

0 to 300 Vac scale. 

2.

Two jumper wires, no. 14 wire, insulated, 12 in. 

(305 mm) long with insulated alligator clips at both ends. 

Burner Sequence

LED Energized

Standby

POWER

, FLAME and ALARM.

Run

POWER, FLAME

 and ALARM.

Reset/Alarm Test

POWER

, FLAME and 

ALARM

.

CAPTIVE 

MOUNTING 

SCREW

DUST

COVER

RELAY 

MODULE

FLAME

AMPLIFIER

RESET PUSHBUTTON

SEQUENCE

STATUS

LEDS

M7889

Содержание EC7823A

Страница 1: ...Ratings see Table 3 Voltage and Frequency EC7823A 220 240 Vac 10 15 50 60 Hz 10 RM7823A 120 Vac 10 15 50 60 Hz 10 Power Dissipation 10W maximum Maximum Total Connected Load 2000 VA Fusing Total Connected Load 15A type SC Fast Blow or equivalent Environmental Ratings Ambient Temperature Operating 40 F to 140 F 40 C to 60 C Storage 40 F to 150 F 40 C to 66 C Humidity 85 relative humidity continuous ...

Страница 2: ...ired to correct this interference 9 This digital apparatus does not exceed the Class B limits for radio noise for digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications Location Humidity Install the relay module where the relative humidity never reaches the saturation point The relay module is designed to operate in a maximum 85 relative humidi...

Страница 3: ...ures for given application TTW60C THW75C THHN90C Ground Type Recommended Practice Earth ground subbase and relay module 1 Use to provide a connection between the subbase and the control panel of the equipment Earth ground must be capable of conducting enough current to blow the 15A fast acting fuse or breaker in the event of an internal short circuit 2 Use wide straps or brackets to provide minimu...

Страница 4: ... Wiring Check 1 Check the power supply circuit The voltage and frequency tolerance must match those of the EC RM7823A A separate power supply circuit may be required for the EC RM7823A Add the required disconnect means and overload protection 2 Check all wiring circuits and complete the Static Checkout in Table 5 before installing the EC RM7823A on the subbase 3 Install all electrical connectors 4...

Страница 5: ... 10 9KA2 N C 1A Pilot Duty at 120 Vac F 11 Flame Sensor 60 to 220 Vac current limited 12 Unused 13 9KB Common 14 9KB1 N C 1A Pilot Duty at 120 Vac also rated for 5V control circuits 15 9KB2 N O 1A Pilot Duty at 120 Vac also rated for 5V control circuits 16 21 Unused 22 Shutter 120 Vac 0 5A Terminal Number Description Ratingsa G Flame Sensor Grounda Earth G Earth Grounda L2 N Line Voltage Common 3 ...

Страница 6: ... signal voltage probes 3 Make sure no subbase wiring is projecting beyond the terminal blocks Tuck in wiring against the back of the subbase so it does not interfere with the knife blade terminals or bifurcated contacts IMPORTANT The EC RM7823A must be installed with a plug in motion rather than a hinge action 4 Mount the EC RM7823A by aligning the four L shaped corner guides and knife blade termi...

Страница 7: ...use serious injury death or equipment damage 1 Close all manual fuel shutoff valve s before starting these tests 2 Use extreme care while testing the system Line voltage is present on most terminal connections when power is on 3 Open the master switch before installing or removing a jumper on the subbase 4 Before continuing to the next test be sure to remove test jumper s used in the previous test...

Страница 8: ...damaged or incorrectly sized wires and tighten any loose terminal screws 10 Replace faulty controllers limits interlocks actuators valves transformers motors and other devices as required 11 Make sure normal operation is obtained for each required test before continuing the checkout 12 After completing each test be sure to remove the test jumper s WARNING Explosion hazard Can cause serious injury ...

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