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CleaverBrooks CB780, Installation Instructions Manual, Page: 23 / 36

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CleaverBrooks CB780 Installation Instructions Manual Download Page 23

CB780/CB784 RELAY MODULES

23

32-00207—01

Table 5. Selectable Messages.

Selectable Message

(Second Line)

Display Value
(Second Line)

First Line

Message

Flame Signal

n.nV

Total Cycles

nnnnn

Total hours

nnnnn

Fault History 

Fault Cycle

nnnnn <  H1

Fault Hours

nnnnn <  H1

Fault Code 

nnn <

H1

*fault—message*

H1

sequence—message<

H1

(second-line-msg)<

H1

Fault Cycle

nnnnn <H2

Fault Hours

nnnnn <H2

Fault Code

nnn <

H2

*fault—message*<

H2

sequence—message<

H2

(second-line-msg)<

H2

Fault Cycle

nnnnn <H3

Fault Hours

nnnnn <H3

Fault Code

nnn <

H3

*fault—message*<

H3

sequence—message<

H3

(second-line-msg)<

H3

Fault Cycle

nnnnn <H4

Fault Hours

nnnnn <H4

Fault Code

nnn <

H4

*fault—message*<

H4

sequence—message

H4

(second-line-msg)

H4

Fault Cycle

nnnnn <H5

Fault Hours

nnnnn <H5

Fault Code

nnn <

H5

*fault—message*<

H5

sequence—message

H5

(second-line-msg)

H5

Fault Cycle

nnnnn <H6

Fault Hours

nnnnn <H6

Fault Code

nnn <

H6

*fault—message*<

H6

sequence—message

H6

(second-line-msg)

H6

Summary of Contents for CB780

Page 1: ...B784 include automatic burner sequencing flame supervision system status indication system or self diagnostics and troubleshooting FEATURES Safety features Interlock check Closed loop logic test Dynam...

Page 2: ...t history of six most recent faults Cycles of operation at time of fault Expanded annunciator data at time of fault Fault message and code Hours of operation at time of fault Sequence status at time o...

Page 3: ...ing 40 F to 140 F 40 C to 40 C Storage 40 F to 150 F 40 C to 66 C Humidity 85 RH continuous noncondensing Vibration 0 5G environment Dimensions Refer to Fig 1 and 2 Weight CB780 CB784 1 pound 10 ounce...

Page 4: ...AF IRI acceptable Federal Communications Commission Part 15 Class B Emissions Mounting 833 2725 for panel mount Required Components CB780 120 Vac 50 60 Hz 833 2718 CB784 120 Vac 50 60 Hz 833 2720 Plu...

Page 5: ...AIN ALARM RESET 5 127 5 127 M23943C REMOVE ONLY FOR TERMINAL TEST ACCESS 1 1 5 1 4 133 BACK ENTER Edit 2 1 32 52 BURNER CONTROL 29 32 23 19 32 15 1 1 4 32 1 1 32 26 5 32 4 5 16 8 M23388C 1 2 13 7 16 1...

Page 6: ...s b Lockout Interlock opens c Ignition pilot valve intermittent pilot valve ter minal is not energized d Early Spark Termination terminal is energized after five seconds e No flame is present at end o...

Page 7: ...rwise purge timing starts when the High Fire Switch is closed This switch will also cause a hold four minutes fifteen seconds condition when the switch is open before purge or opens during purge The C...

Page 8: ...Interlock opens during the first ten seconds the purge timer will be reset This provides a continuous PURGE to occur without interruption before the Pilot Flame Establishing Period If a Lockout Inter...

Page 9: ...recommended Any other position decreases the maximum ambient temperature rating 2 The 833 2725 Wiring Subbase can be mounted directly in the control cabinet Be sure to allow ade quate clearance for se...

Page 10: ...Fig 6 Internal block diagram of the CB780 CB784 see Fig 7 8 9 or 10 for detailed wiring instructions CONFIGURATION JUMPERS MICROCOMPUTER RESET PUSHBUTTON RUN TEST SWITCH STATUS LEDs PLUG IN PURGE TIME...

Page 11: ...ignition transformer wires in the same conduit with the flame detection wiring 2 Do not route scanner wires in conduit with line voltage circuits 3 Enclose scanner wires without armor cable in metal...

Page 12: ...0 SEC INTERRUPTED PILOT IGNITION PREIGNITION INTERLOCK SERIES 90 FIRING RATE MOTOR SERIES 90 CONTROLLER 817 1742 INFRARED LEAD SULFIDE FLAME DETECTOR 817 1743 ULTRAVIOLET FLAME DETECTOR 817 1121 ULTRA...

Page 13: ...80 CB 784 RELAY MODULE 13 VDC POWER SUPPLY 833 2727 REMOTE KEYBOARD DISPLAY MODULE THREE WIRE SHIELDED CABLE MAY BE REQUIRED TWO 120 OHM TERMINATING RESISTORS ARE REQUIRED FOR CONNECTIONS OVER 100 FEE...

Page 14: ...ther than a hinge action 4 Mount the CB780 CB784 by aligning the four L shaped corner guides and knife blade terminals with the bifurcated contacts on the wiring subbase and tightening the two screws...

Page 15: ...e Keyboard Dis play Module with the two mating slots on the CB780 CB784 see Fig 13 2 Insert the two interlocking ears into the two mating slots and with a hinge action push on the lower cor ners of th...

Page 16: ...gnal Amplifier 1 Disconnect power supply before beginning installa tion to prevent electrical shock and equipment dam age More than one disconnect may be involved 2 Align the amplifier circuit board e...

Page 17: ...B780 CB784 provides a PREPURGE timing selectable from 30 seconds to 2 1 2 minutes with power applied and the CB780 CB784 operating control indicating a call for heat Running Interlocks Preignition Int...

Page 18: ...ergized for early spark termination 4 Main Flame Establishing Period MFEP a The CB780 CB784 has a selectable ten second or fifteen second MFEP After the Ignition Trials and with the presence of flame...

Page 19: ...it or a lockout message is available The CB780 CB784 LEDs provide positive visual indication of the program sequence POWER PILOT FLAME MAIN and ALARM Fig 18 Keyboard Display Module and sequence status...

Page 20: ...DELAY Low Fire Jumprd POWER PILOT FLAME MAIN AND ALARM PURGE HOLD F G Flame Detected POWER PILOT FLAME MAIN AND ALARM PURGE HOLD Low Fire Switch POWER PILOT FLAME MAIN AND ALARM PILOT IGN minutes sec...

Page 21: ...instantaneously switches the display from a second line selectable message to second line preempted message The sixty sec ond timeout function also can be used for this task The MODE pushbutton will...

Page 22: ...ion PILOT IGN 00 05 Fault History M7402C PILOT IGN 00 10 H1 Fault Cycle 174 SCROLL MODE SAVE SCROLL MODE SAVE BURNER CONTROL BURNER CONTROL LOCKOUT 17 MFEP Main Valve 0 M7403D LOCKOUT 17 MFEP Main Fla...

Page 23: ...t Hours nnnnn H2 Fault Code nnn H2 fault message H2 sequence message H2 second line msg H2 Fault Cycle nnnnn H3 Fault Hours nnnnn H3 Fault Code nnn H3 fault message H3 sequence message H3 second line...

Page 24: ...RM78nnx DI Device Suffix nnnn DI Run Test Sw RUN or TEST DI Operating Control OperControl 1 or 0 DI Interlock 1 or 0 DI Pilot Valve 1 or 0 DI Main Valve 1 or 0 DI Ignition 1 or 0 DI Low Fire Sw 1 or 0...

Page 25: ...nored during PFEP for the CB780 CB784 if terminals 8 and 9 or 9 and 21 are jumpered 5 During RUN the Run Test Switch when placed in the TEST position will drive the firing rate motor to the Low Fire p...

Page 26: ...ernal surge pro tectors will break down and conduct a current This could cause the CB780 CB784 to fail the dielectric test or possibly destroy the internal lightning and high current protection Equipm...

Page 27: ...nsformer is con nected to terminal 8 2 Automatic pilot valve opens if connected to terminal 8 NOTE Refer to wiring diagram of system being tested 1 Watch for spark or listen for buzz a Ignition electr...

Page 28: ...on and CB780 CB784 System Annunciation Diagnostics and Troubleshooting Bulletin Number CB 7803 2 Repeat ALL required Checkout tests after all adjustments are made ALL tests must be satisfied with the...

Page 29: ...1 Use one megohm volt meter with a 0 to 10 Vdc capability 2 Set the one megohm volt meter to the 0 to 10 Vdc range 3 Insert the positive red probe into the jack of the flame amplifier Insert the negat...

Page 30: ...nals 8 10 or 21 refer to the appropriate wiring diagram to determine the proper terminal Disconnect the leadwire to the pilot valve if it is connected to the same terminal c Close the master switch to...

Page 31: ...ten sec ond INITIATE sequence 5 Let the sequence advance through PREPURGE Ignition spark should occur after PREPURGE period Listen for the click of the first stage fuel solenoid valve s 6 Let the pro...

Page 32: ...e exact point the FLAME LED light goes out 9 Increase the pilot pressure immediately until the FLAME LED comes on and then turn it down slowly to obtain a pressure reading just above the dropout point...

Page 33: ...equipment Operating Manual Continue adjustments until hot refractory hold in is eliminated Ultraviolet Sensor Ignition Spark Response Test All Ultraviolet Detectors Test to make certain that the ignit...

Page 34: ...Fail fault will be displayed on the KDM Fault code 17 will be displayed to denote the fault g Safety shutdown will occur 7 Opening a Preignition Interlock after the first five seconds of POSTPURGE a...

Page 35: ...ERVICE NOTE If the Keyboard Display Module is scrambled remove and reinstall the Keyboard Display Module and reset the CB780 CB784 Relay Module SERVICE NOTE Use the access slots on the sides of the Wi...

Page 36: ...ing of device physically secure Physical protection of the device is applied via Run Test switch label seal It is intended to prevent and detect unauthorized access Modbus DDL Interface security Any c...

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