Page 2 | SERIES 28A BOILER INSTALLATION AND OPERATION INSTRUCTIONS |
CONTENTS
Before You Start ................................................. | page 2 |
Boiler Ratings & Capacities ................................ | page 2 |
Boiler Location ................................................... | page 2 |
Combustion Air & Ventilation .............................. | page 3 |
Chimney & Vent Pipe Connections .................... | page 4 |
Common Vent Systems ...................................... | page 6 |
Boiler Assembly ................................................ | page 7 |
General Piping Requirements .......................... | page 14 |
Water Boiler Piping .......................................... | page 15 |
Steam Boiler Piping .......................................... | page 18 |
Burner Installation ............................................ | page 21 |
Electrical Wiring ............................................... | page 22 |
Boiler Operation .............................................. | page 22 |
Boiler Checking & Adjustment .......................... | page 23 |
Boiler Maintenance .......................................... | page 23 |
Repair Parts ..................................................... | page 25 |
Health Warnings .......................................... | back cover |
BEFORE YOU START
This manual covers the assembly, installation, operation and maintenance of a Series 28A low pressure steam or hot water boiler.
The 28A Series boilers are supplied completely knocked down for field assembly, knocked down but with an assembled block or as complete factory assembled packaged boilers. All boiler components should be inspected for damage upon receipt. Any damage should be immediately reported to the trucker or wholesaler. All boiler components should be stored in a clean dry area. To obtain the safe, dependable, efficient operation and long life for which this boiler was designed, these instructions must be read, understood and followed.
The Series 28A boilers have been design certified by CSA. Each unit has been constructed and hydrostatically tested for a maximum working pressure of 15 psi for steam, 80 psi for water, in accordance with Section IV of the A.S.M.E. Boiler and Pressure Vessel Code for cast iron boilers.
All aspects of the boiler 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 Z223.1/NFPA
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
In Canada, the installation must be in accordance with the requirements of CAN/CGA B149.1 or .2, Installation Code for Gas Burning Appliances and Equipment.
In the Commonwealth of Massachusetts the installation of a gas burner must be performed by a licensed plumber or gas fitter.
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.
Direct all questions to your Smith Cast Iron Boiler distributor or contact the Smith Customer Service Department. Always include the model and serial numbers from the rating plate of the boiler in question.
BOILER RATINGS & CAPACITIES
Before undertaking the installation of the 28A Series boiler check the boiler rating plate to ensure that the boiler has been sized properly for the job. The “Net I=B=R Ratings” specify the equivalent amount of direct cast iron radiation that the boiler can supply under normal conditions. Also ensure that the boiler has been set up for the type of fuel available at the installation site.
BOILER LOCATION
1.Locate the boiler in an area that provides good access to the unit. A minimum distance of 6 in, 0.15m must be maintained between the boiler and combustible construction. Servicing may require the removal of jacket panels so service clearances should be maintained. Allow a minimum clearance of 3 ft, 0.9 m between adjacent construction and the left side, front and smoke hood. A minimum clearance of 2 ft, 0.6 m should be maintained between adjacent construction and the right side and back of the boiler. Accessibility clearances should take precedence over minimum clearances to combustible construction, Figure 1.
2.An optimum site will be level, central to the piping system, close to a chimney and have adequate fresh air for combustion.
3.The boiler should be installed on a level, flat, concrete floor or pad that is structurally sound and will support the weight of the boiler. If a concrete pad is used it must be at least 2" thick. Never install the boiler on a concrete floor or pad that contains wires, cables, water pipes or hoses. This boiler is designed for