Page 2 | GT INSTALLATION AND OPERATION INSTRUCTIONS |
CONTENTS
Before You Start | page 2 |
Boiler Ratings & Capacities | page 2 |
Boiler Location | page 3 |
Clearances to Combustible Construction | page 3 |
Combustion Air | page 4 |
General Venting Guidelines | page 4 |
Horizontal Direct Vent Systems | page 5 |
Vertical Direct Vent Systems | page 9 |
Condensate Drain | page 10 |
General Plumbing Guidelines | page 11 |
Primary Loop Plumbing | page 13 |
Multiple Boiler Primary Loop Plumbing | page 13 |
Secondary Loop Plumbing | page 13 |
Gas Supply Piping | page 18 |
Electrical Wiring | page 19 |
Sentry 2100 Controller | page 26 |
Boiler Set Up | page 29 |
Operating Instructions | page 29 |
Boiler Checking & Adjusting | page 33 |
Gas Pressure Adjustment | page 33 |
Boiler Maintenance | page 34 |
Wall Hung Conversion | page 35 |
Trouble Shooting | page 36 |
Replacement Parts | page 41 |
BEFORE YOU START |
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WARNING: This manual must be read and fully understood before installing, operation or servicing this boiler! Failure to follow these instructions could result in a fire or explosion causing extensive property damage, personal injury or death!
These instructions cover the GT Series gas fired, direct vent, low pressure, hot water boiler. GT boilers have been design certified by CSA for use with natural and propane gas under the latest edition of
Each unit has been constructed and hydrostatically tested for a maximum working pressure of 30 psi, 207 kPa, in accordance with Section IV of the ASME Boiler and Pressure Vessel Code. Each boiler has been equipped with a 30 psi, 207 kPa pressure relief valve.
This manual covers the application, installation, operation and maintenance of a GT Series low pressure hot water boiler.
To obtain the safe, dependable, efficient operation and long life for which this boiler was designed, these instructions must be read, understood and followed.
Direct all questions to your Smith distributor or to the Customer Service Department, 260 North Elm Street, Westfield, MA 01085. Always include the model and serial numbers from the rating plate of the boiler in question.
The owner should maintain a record of all service work performed with the date and a description of the work done. Include the name of the service organization for future reference.
Where required by the authority having jurisdiction, the installation must conform to the Standard for Controls and Safety Devices for Automatically Fired Boilers, ANSI/ASME
The installation must conform to the requirements of the authority having jurisdiction or, in the absence of such requirements, to the National Fuel Gas Code, ANSI
If installed in the Commonwealth of Massachusetts, you MUST FOLLOW the additional instructions contained in Smith’s instruction sheet MA IOM. If you don’t have a copy call your Smith distributor or Smith.
BOILER RATINGS & CAPACITIES
Before undertaking the installation of the GT check the boiler rating plate to ensure that the boiler is the proper size for the job.
Also ensure that the boiler has been set up for the type of gas available at the installation site. Other important considerations are the availability of an adequate electrical supply, fresh air for combustion and proximity a suitable outside wall.
High Altitude Operation
The GT boiler is designed to operate to capacity in installations with 2000 ft, 610 m of elevation or less. At elevations higher than 2000 ft, 610 m the unit will
NOTE: It is the Installers responsibility to check the combustion, and to adjust the combustion in accordance to Operating Instructions Section.
