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CleaverBrooks CB780 User Manual
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CB780/CB784 R
EL
AY MODULES
32-00207—0
1
12
Fig. 7. Wi
ring the CB
780/CB784 Rel
ay Mod
ule.
M7408A
G
L2
3
4
5
6
7
8
9
10
F
(L1)
13
14
15
16
17
18
19
20
21
22
12
LOCKOUT INTERLOCKS
(INC. AIR FLOW SWITCH)
MASTER
SWITCH
LOW FIRE
START SWITCH
5 SECOND IGNITION
(EARLY SPARK)t
(TERMINATION)
MAIN FUEL
VALVE(S)
BURNER
CONTROLLER/LIMITS
BURNER MOTOR
(BLOWER)
HIGH FIRE
COMMON
LOW FIRE
MODULATE
120V ALARM
10 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
ULTRAVIOLET
FLAME DETECTOR
120V, 50/60 Hz POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
DO NOT WIRE TO ANY UNUSED TERMINALS.
FOR DIRECT SPARK IGNITION (OIL
OR GAS)
IGNITION
TRANSFORMER
FUEL VALVE
R
W
B
R
W
B
L1
(HOT)
L2
1
OR
OR
BLUE
BLUE
WHITE
YELLOW
L2
WHITE
WHITE
BLACK
BLACK
L1
L2
8
9
10
L2
833-2725
2
15 SEC.
INTERRUPTED
PILOT VALVE
2
1
HIGH FIRE
PURGE SWITCH
11
13
Table of Contents
Application
1
Features
1
Specifications
2
Principal Technical Features
6
Safety Shutdown (Lockout) Occurs If:
6
Safety Provisions
6
Internal Hardware Status Monitoring
6
Closed Loop Logic Test
6
Dynamic Ampli-Check™
7
Dynamic Flame Amplifier and Shutter Check
7
Dynamic Input Check
7
Dynamic Safety Relay Test
7
Dynamic Self-Check Safety Circuit
7
Expanded Safe-Start Check
7
High Fire Purge and Low Fire Start Switch Tests
7
Mandatory Purge
7
Off Cycle (STANDBY or PREPURGE) Flame Signal Check
7
Preignition Output Circuit Check
7
Tamper-Resistant Timing and Logic
7
Verified Spark Termination
8
First-Out Annunciation and Self- Diagnostics
8
Interlock Requirements
8
Installation
8
When Installing This Product…
8
Wiring Information
8
Humidity
9
Vibration
9
Weather
9
Mounting Wiring Subbase
9
Wiring
9
Assembly
14
Mounting CB780/CB784 Relay Modules
14
Relay Module Mounting
14
Installing the Purge Card
14
Mounting Keyboard Display Module
15
Mounting Data ControlBus™ Module
15
Remote Mounting of Keyboard Display Module
16
Installing Plug-In Flame Signal Amplifier
16
Installing the Flame Detector
16
Operation
17
Sequence of Operation
17
Keyboard Functions
21
Selectable Messages
21
Expanded Annunciator Messages (See Table 6)
24
Run/Test Switch Functions
25
Selectable Site-Configurable Jumpers
26
Static Checkout
26
Equipment Recommended
26
General Instructions
26
Checkout
28
Equipment Recommended:
28
Checkout Summary
28
Preliminary Inspection
29
Flame Signal Measurement (Table 9 and Fig. 25)
29
Initial Lightoff Check for Proved Pilot
30
Initial Lightoff Check for Direct Spark Ignition
31
Pilot Turndown Test (All Installations Using a Pilot)
32
Hot Refractory Saturation Test (All Infrared Detectors)
32
Hot Refractory Hold-in Test (All Infrared Detectors)
33
Ultraviolet Sensor, Ignition Spark Response Test (All Ultraviolet Detectors)
33
Response to Other Ultraviolet Sources
33
Flame Signal With Hot Combustion Chamber (All Installations)
33
Safety Shutdown Tests (All Installations)
33
Troubleshooting
34
CB780/CB784 System Diagnostics
34
SAFETY AND SECURITY
36
Physical device protection
36
Modbus & DDL Interface security
36
License agreement
36
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CleaverBrooks CB780 Specifications
General
Brand
CleaverBrooks
Model
CB780
Category
Relays
Language
English
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