Contents
v
Conventions Used in This Manual
Safety Precautions
Chapter 1. Overview
Features ......................................................................1
System configuration ..........................................................1
Ensuring safety ...............................................................1
Handling Precautions .........................................................2
Equipment design cautions ....................................................2
Most important points for ensuring safety ......................................2
Precautions for instrumentation ...............................................2
Model number ................................................................3
Related equipment ............................................................3
Chapter 2. Installation, Wiring
Installation, Precautions for wiring .............................................4
Installation method ...........................................................6
Cautions regarding installation ................................................6
When the sub-base (Model BC-R05A100) is used ................................7
When the base unit (Q890A100) for model RA890 replacement is used ...........9
Terminal numbers, front panel item names ....................................11
Example of wiring connection with external device ............................14
Chapter 3. Operation
Part names ..................................................................21
Operation ...................................................................21
Chapter 4. Explanation of Operation
Example of wiring connection with external device: Internal block diagram ......23
Example sequence ...........................................................27
Chapter 5.
Trial Operation and Adjustment
Preliminary inspection .......................................................35
Inspection procedure .........................................................35
Ignition spark response (ultraviolet sensor) ....................................36
Measurement of flame voltage ................................................37
Pilot turn-down test ..........................................................39
Safety shutoff check ..........................................................40
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