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Patterson-Kelley TBIG-03 User Manual

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Gemini™ Twin-Fuel Gas-Fired Boiler

TABLE OF CONTENTS

1.0 INTRODUCTION ......................................... 1

2.0 DESCRIPTION ............................................ 2

2.1 Principle of Operation.............................. 2

3.0 SAFETY ...................................................... 2

3.1 General ................................................... 2
3.2 Training ................................................... 2
3.3 Safety Features....................................... 3
3.4 Safety Labels .......................................... 3
3.5 Safety Precautions .................................. 3

3.5.1 Electrical Hazards ......................................3
3.5.2 Burn, Fire, and Explosion Hazards.............3
3.5.3 Crush Hazards ...........................................4
3.5.4 Chemical Hazards ......................................4

4.0 INSTALLATION .......................................... 5

4.1 General ................................................... 5
4.2 Gas Piping .............................................. 6

4.2.1 Gas Bleeds and Vents................................7

4.3 Pre-Start Check List ................................ 7
4.4 Pre-Start Safety Checks and Adjustments 7

4.4.1 Test of Ignition Safety System....................8
4.4.2 Test of Low Water Cutoff ...........................9
4.4.3 Test of High-Limit Control ..........................9

4.4.4 Test of Gas Pressure Switch .....................9
4.4.5 Gas Pressure Adjustment ........................10
4.4.6 Leak Testing of Valves.............................10

5.0 OPERATION............................................. 13

5.1 General.................................................. 13

5.1.1 Tests ........................................................13
5.1.2 Starting System ........................................13

5.2 Lighting and Shut-Down Procedures .... 13

5.2.1 Lighting Procedures .................................13
5.2.2 Normal Shut-Down Procedures ...............14
5.2.3 Emergency Shut-Down ............................14

5.3 Switchover to Propane Operation ......... 14

7.0 MAINTENANCE ........................................ 15

7.1 General................................................. 15
7.2 Sequence of Operation......................... 16

8.0 PARTS AND TECHNICAL SUPPORT ...... 17

8.1 Wiring Diagrams ................................... 17

8.1.1 Wiring Diagram (Lo-Hi-Lo) .......................18
8.1.2 Control Logic Diagram (Lo-Hi-Lo) ............19
8.1.3 Wiring Diagram (On-Off)..........................20
8.1.4 Control Logic Diagram (On-Off) ...............21





It is essential to read, understand, and follow the recommenda-
tions of this manual before installing, operating, or servicing this
equipment. Failure to do so could result in serious injury,
death, and/or property damage.

The information and instructions herein pertain only to equip-
ment supplied by Patterson-Kelley Company. Patterson-Kelley
is not responsible for equipment supplied by others, nor for any
adverse effects such equipment might have on equipment sup-
plied by Patterson-Kelley.