Patterson-Kelley TBIG-03 owner manual 1.0INTRODUCTION, Introduction

Introduction

Warning!

This boiler requires VAPORIZED propane or natural gas. Under NO CIRCUMSTANCES may liquid fuel of any kind be introduced in the boiler.

propane connection and shutoff

natural gas connection and shutoff

Figure 1-1 Twin-Fuel Gas Train

(Shows 1500/1700/1900 Series; refer to Figure 5-1 for 700/900/1200 Series)

1.0INTRODUCTION

The twin-fuel option for the Patterson-Kelley Gem- ini™ gas-fired boiler allows the boiler to be fired by propane in the event that the supply of natural gas is temporarily interrupted or restricted. The necessary fittings, valves, piping, and controls for twin-fuel op- eration are factory installed.

This document is a companion to the “Installation and

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Owner’s Manual - TBIG” for the standard Thermific￿ boiler. Both documents must be used together. This companion document describes those safety, installa- tion, adjustment, and maintenance procedures which differ from the single-fuel model. Information which applies to both models is found in the main manual.