Practical Pointers | Fives Combustion


Practical Pointers
1

How to navigate through this booklet
3

Table of Contents
4

Introduction
6

Piping and Instrumentation Diagram
9

Regulators
10

Simple (Line) Pressure-Reducing Gas Regulator
10

Atmospheric Regulator
11

Atmospheric Regulator Supplying a Premix Burner System
12

Operation of a Cross-Connected Air/Gas Ratio Regulator Supplying a Nozzle-Mix Burner System
13

Pressure Taps for Cross-Connection Impulse Lines
14

Taps for Measuring Chamber Pressure
14

Premix Systems
15

Operation of an Aspirator Mixer
15

Installation and Lighting of Premix Systems
16

Adjustment of Premix Systems
17

Premix System in Use
18

Effect of Pressure or Suction in Combustion Chamber on Control with a Zero or Atmospheric System
19

Effect of Combustion Chamber Pressure or Suction on Burner Capacity
20

Troubleshooting Air/Gas Ratio Regulators Atmospheric Service
21

Troubleshooting Premix Burners
22

Premix Burner Configurations
23

Nozzle Mix Systems
24

Operation of a Cross-Connected Air/Gas Ratio Regulator
24

Adjustment of High Fire Air/Fuel Ratio
25

Adjustment of Air/Fuel Ratio at Low Fire Rate
26

Summary - Practical Air/Fuel Ratio Adjustment
28

Regulator Selection
29

Regulator Installation
30

Installation for Premix Burners
31

Installation for Nozzle-Mix Burners
32

Lighting and Adjustment
34

Servicing
35

Gas Pressure Requirements for Cross-Connected Air/Gas Ratio Regulators
37

If Gas Supply Pressure is Low
38

Use of Bleeder
39

Effect of Pressure or Suction in Combustion Chamber on Control with a Straight Cross-Connected System
40

Effect of Pressure or Suction in Combustion Chamber on Control with a Cross-Connect4ed System with Bleeder
41

Effect of Pressure or Suction in Combustion Chamber on Burner Capacity with Nozzle-Mix Burners
42

Checking Operation of a Cross-Connected Air/Gas Ratio Regulator
43

Troubleshooting 7218 Air/Gas Ratio Regulators Cross-Connected
44

Troubleshooting Nozzle-mix Gas Burners
45

XSA Operation - Variable Ratio Regulator
46

XSA Operation - Full Air Pressure-Controlled Impulse
48

Accurate Control with High Pressure Gas, Use Individual Cross-Connected Line Regulators
50

Troubleshooting Pressure-Reducing (line) Regulators
51

Oil and Dual Fuel Systems
52

Ratiotrol and Oil Burner
52

3 Pipe Dual-Fuel Burner
53

4 Pipe Dual-Fuel Burner
54

Pilot Systems
55

Gas Supply to 4011 Pilots
55

Pilot Piping
56

Pilot Adjustment
57

Natural Gas Flames of a 4011 Premix Pilot Set
58

Troubleshooting Pilots - Spark Ignition
59

Troublehshooting Pilots - Spark or Manual Ignition
59

Troubleshooting Pilots
60

Troubleshooting Pilots - Flame Detection
61

Manifolds, Valves, Linkages
62

Gas and Air Manifolds Do's and Don'ts
62

Adjustable Port Air Valve Adjustments
63

Valve Linkage Adjustments for a Butterfly or Adjustable Port Type Valve
64

Judging Flames
66

Index
67

Record Your Best Settings
68

Contact Us
69

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