CONTENTS
i
GF-107 THE AERCO Benchmark 2.0 GAS FIRED BOILER
Operating & Maintenance Instructions
FOREWORD
Page
Section 1 SAFETY PRECAUTIONS----------------------------------1-1
1.1 Safety Warnings 1.3 Prolonged Shut-Down
1.2 Emergency Shut Down
Section 2 INSTALLATION PROCEDURES-------------------------2-1
2.1 Receiving the Unit
2.2 Unpacking
2.3 Installation
2.4 Gas Supply Piping
2.5 Electrical Supply
2.6 Mode of Operation and Field Control
Wiring
2.7 Aux. Contacts
2.8 Enable/Disable Interlock
2.9 Fault Relay Wiring
2.10 Flue Gas Vent Installation
2.11 Combustion Air
2.12 Unit Initial Fill
Section 3 CONTROL PANEL COMPONENTS and
OPERATING PROCEDURES-----------------------------3-1
3.1 The Control Panel
3.2 The Temperature Controller
3.3 The Primary Menu
3.4 The Secondary Menu
3.5 The Status Annunciator
3.6 The Combustion Safeguard
3.7 Water Level Test and Reset
3.8 On\Off Switch
3.9 Starting sequence
3.10 After Flame
3.11 Flame Test Jacks
3.12 Start \ Stop Levels
3.13 Auto Restarts
Switches
Section 4 INITIAL START-UP------------------------------------------4-1
4.1 Initial Start-Up requirements
4.2 Tools and Instrumentation for
Combustion Calibration
4.3 Combustion Calibration of Natural Gas
Unit
4.4 Combustion Calibration of Dual Fuel
Unit
4.5 Boiler Reassembly
4.6 Over-Temperature Limit Switch
Section 5 BOILER MODE of OPERATION-------------------------5-1
5.1 Indoor/Outdoor Reset Mode
5.2 Constant Setpoint Mode
5.3 4-20 ma Remote Setpoint Mode
5.4 4 to 20 ma Direct Drive Mode
5.5 Boiler Management System
5.6 Combination Control System
5.7 Using the Outside Air Sensor Feature
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