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Smith 28HE Series Installation & Operating Instructions Manual

Smith series 28he gas or oil steam boiler
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MEA#273-89-E
GAS OR OIL STEAM BOILER
INSTALLATION & OPERATING
DESIGNED AND TESTED ACCORDING TO A.S.M.E. BOILER AND PRESSURE
VESSEL CODE, SECTION IV FOR A MAXIMUM ALLOWABLE WORKING PRESSURE OF:
15 PSI STEAM.
NOTE: READ THESE INSTRUCTIONS CAREFULLY. THEY WILL
SAVE YOU VALUABLE TIME WHEN ASSEMBLING THE BOILER.
WARNING: If the information in this manual is not followed exactly, a fi re or explosion
may result causing property damage, personal injury or loss of life.
Do not store or use gasoline or other fl ammable vapors and liquids in the vicinity of
this or any other appliance.
WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch. Do not use any phone in your building.
• Immediately call your gas supplier from a phone outside of the building. Follow the
gas supplier's instructions.
• If you cannot reach your gas supplier, call the fi re department.
Installation and service must be performed by a qualifi ed installer, service agency or
the gas supplier.
INSTALLER, THESE INSTRUCTIONS TO BE AFFIXED ADJACENT TO THE BOILER.
CONSUMER, RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE PURPOSES.
FOR JACKET ASSEMBLY AND BURNER SET UP SEE SEPARATE INSTRUCTIONS.
SERIES 28HE
INSTRUCTIONS
TO INSTALLER
TEL. (413) 562-9631 FAX (413) 562-3799
28-IOM-3

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  • Page 1 MEA#273-89-E 28-IOM-3 SERIES 28HE GAS OR OIL STEAM BOILER INSTALLATION & OPERATING INSTRUCTIONS DESIGNED AND TESTED ACCORDING TO A.S.M.E. BOILER AND PRESSURE VESSEL CODE, SECTION IV FOR A MAXIMUM ALLOWABLE WORKING PRESSURE OF: 15 PSI STEAM. TO INSTALLER NOTE: READ THESE INSTRUCTIONS CAREFULLY. THEY WILL SAVE YOU VALUABLE TIME WHEN ASSEMBLING THE BOILER.

  • Page 2: Table Of Contents

    Electrical Wiring ..........page 19 Boiler Operation ..........page 19 Direct all questions to your Smith Cast Iron Boiler Boiler Checking & Adjustment ......page 20 distributor or contact the Smith Customer Service Boiler Maintenance ........... page 21 Department.

  • Page 3: Combustion Air & Ventilation

    SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 3 Figure 1 -Service Clearances to Adjacent Construction COMBUSTION AIR & VENTILATION WARNING: Never install a 28HE boiler on top of combustible flooring without consulting the WARNING: This boiler must be supplied with local building authorities for proper installation combustion and ventilation air in accordance guidelines! A minimum clearance of 6 in,...

  • Page 4: Chimney & Vent Pipe Connections

    SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 4 All Air From Inside The Buidling Table 1 - Make-up Air Louver Sizing If the boiler is to be located in a confi ned space mini- Required Cross Sectional Area (in mum clearances of 24 in, 610 mm must be maintained Metal Wooden...
  • Page 5 Figure 2. Table 2 lists the capacity may have to be verifi ed. Contact the Smith equivalent breeching and fl ue sizes required for the Technical Service Department to verify the burner 28HE boilers.

  • Page 6: Common Vent Systems

    SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 6 VENT CONNECTIONS WARNING: Failure to maintain minimum clearances between vent connectors and any combustible material can result in a fi re causing WARNING: Never modify or alter any part of the extensive property damage, severe personal boiler’s smoke hood.

  • Page 7: Boiler Assembly

    SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 7 c) Insofar as is practical, close all building doors and g) Any improper operation of the venting system windows and all doors between the space in which should be corrected so the installation conforms the appliances remaining connected to the common with the National Fuel Gas Code, ANSI Z223.1/ venting system are located and other spaces of the...
  • Page 8 SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 8 Completed boilers must be tested as follows: 2. Carefully place the back section in position on the angles as shown in Figure 4. Steam Boilers – the assembled boiler sections shall be subjected to a hydrostatic test pressure of not less than WARNING: The section MUST be fully supported 45 psig, (315 kPa.)
  • Page 9 SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 9 5. Insert the large port connector with its steel inner Figure 6 - Section Alignment ring into the upper port. 6. Insert the two round port connectors into the lower ports.
  • Page 10 If it is call the Burner Mounting Plate Installation, Figure 9 Smith Customer Service Department. 1. Apply two coats of the spray adhesive supplied with the boiler to the rope groove on the plate. Allow time 2.
  • Page 11 SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 11 Figure 9 - Burner Mounting Plate Details Observation Port Assembly, Figure 10 Figure 10 - Observation Port Assembly 1. Position the hinged end of the steel flapper door, item 5, over the boss on the observation port cover, item 4.
  • Page 12 SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 12 Observation Port Installation Smokehood Installation, Figure 11 1. Screw the four 5/16-18 ix 1 1/2 in. studs into the 1. Screw the four 5/16-18 x 1 1/2 in. studs into the tapped holes around the observation cover opening tapped holes around the smokehood opening in the in the back section.
  • Page 13 SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 13 Tankless Heater Installation - Optional 5. Install the operating control in one of the heater 1. Clean the heater flange to remove any rust or mounting plates to ensure quick burner response debris.

  • Page 14: General Piping Requirements

    SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 14 GENERAL PIPING REQUIREMENTS Figure 15 - Back Section Tapping Locations CAUTION: Never use automotive antifreeze in the boiler or heating system. If antifreeze is necessary it must be formulated specifically for hydronic heating systems, such as ethylene or propylene glycol.

  • Page 15: Steam Boiler Piping

    A variety of water level controls are available for the 28HE. The water column piping needed to properly mount each control is available from Smith. Figure 18 shows a typical water column piping arrangement. The 1 in. NPT x 7 1/2 in. nipple is always installed in the lower water column tapping, Figures 14 &...
  • Page 16 SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 16 Table 9 - Steam Boiler Capacities Minimum Feed Water Condensate Receiver I=B=R Gross Output Evaporation Rate Boiler Pumping Rate Capacity Model L/hr L/hr Gallons Liters 28HE-S-4 14.8 28HE-S-5 1194 18.9 28HE-S-6 1458 11.7...
  • Page 17 SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 17 Figure 23 - Typical Steam Piping - Gravity Return for Multiple Boilers Figure 24 - Typical Steam Piping - Pumped Return for Multiple Boilers...

  • Page 18: Burner Installation

    SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 18 Install 3 in. nipples into the two 3 in. NPT lower tappings CAUTION: Avoid skin contact with cleaning solution in the front section and install ball valves so the boiler to prevent injury! If eye or skin contact occurs fl...

  • Page 19: Electrical Wiring

    SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 19 Steam Boilers WARNING: Never use an open fl ame to test for Fill the boiler with water to the normal water level line gas leaks. Always use an approved leak of 50 1/2 in., 1.28 m from the fl...

  • Page 20: Boiler Checking & Adjustment

    SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 20 CAUTION: If the fl ue gas temperature exiting the 4. Check the flue temperature. If it’s greater than smoke hood is less than 320°F, 160°C at full rated 320°F, 160°C, reseal the cleanout covers and install input, the number of heat transfer rods in the boiler the left side jacket panels.

  • Page 21: Boiler Maintenance

    SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 21 BOILER MAINTENANCE 10. Install the clean out covers and reseal them with a silicone caulk rated for 500°F, 260°C. WARNING: Servicing, inspection and adjustment 11. Install the left jacket panels and remount the burner. of the boiler must be done by a trained technician in accordance with all applicable 12.
  • Page 22 SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 22 Figure 26 - Boiler Assembly...

  • Page 23: Repair Parts

    SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS Page 23 Number of Sections with Item Quantities Below Ref # Name of Part Part # Front Section (Flanged Connection) 01-3702 Steam Blank Flange (Front) 70-1224 Graphite Port Connector Set 60375 Draw Rod Washers 62099 5/8"...

  • Page 24: Health Warnings

    Carbon Monoxide (CO) is a gas which is odorless, colorless and tasteless but is very toxic. If your Smith boiler is not working properly, or is not vented properly, dangerous levels of CO may accumulate. CO is lighter than air and thus may travel throughout the building. BRIEF EXPOSURE TO HIGH CONCENTRATIONS OF CO, OR PROLONGED EXPOSURE TO LESSER AMOUNTS OF CO MAY RESULT IN CARBON MONOXIDE POISONING.

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