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Smith Cast Iron Boilers 28HE - page 1
SERIES 28HE GAS OR OIL BOILER INST ALLA TION & OPERA TING INSTR UCTIONS DESIGNED AND TESTED A CCORDING T O A.S.M.E. BOILER AND PRESSURE VESSEL CODE, SECTION IV FOR A MAXIMUM ALLO W ABLE WORKING PRESSURE OF: 15 PSI STEAM OR 80 PSI W A TER. W ARNING: If the inf ormation in this manual is not f ollowed exactl y , a fire or e xplosion may result ca ...
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Smith Cast Iron Boilers 28HE - page 2
Page 2 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS CONTENTS Bef ore Y ou Star t ................................................. page 2 Boiler Ratings & Capacities ................................ page 2 Boiler Location ................................................... page 2 Combustion Air & V entilation ............. ...
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Smith Cast Iron Boilers 28HE - page 3
Page 3 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS Figure 1 -Service Clearances to Adjacent Construction W ARNING: Never install a 28HE boiler on top of combustib le flooring without consulting the local building authorities f or proper installation guidelines! A minimum c learance of 6 in, 0.15 m must be maintained between the b ...
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Smith Cast Iron Boilers 28HE - page 4
Page 4 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS All Air From Inside The Buidling If the boiler is to be located in a confined space mini- mum clearances of 24 in , 610 mm must be maintained between the boiler and any adjacent construction. When installed in a confined space, two permanent openings communicating with an additio ...
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Smith Cast Iron Boilers 28HE - page 5
Page 5 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS Chimney Inspection & Sizing If this boiler will be connected to a masonr y chimney , a thorough inspection of the chimney m ust be perf or med. Ensure that the chimney is clean, properly constructed, lined and properly sized, see Figure 2. T able 2 lists the equivalent breech ...
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Smith Cast Iron Boilers 28HE - page 6
Page 6 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS W ARNING: Failure to maintain minimum clearances between vent connector s and any combustib le material can result in a fire causing extensive pr operty damage, se vere per sonal injury or death! COMMON VENT SYSTEMS If an e xisting boiler is remov ed from a common venting system, ...
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Smith Cast Iron Boilers 28HE - page 7
Page 7 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS c) Insof ar as is practical, close all building doors and windows and all doors between the space in which the appliances remaining connected to the common venting system are located and other spaces of the building. T urn on clothes dr y ers and any appliance not connected to th ...
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Smith Cast Iron Boilers 28HE - page 8
Page 8 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS 2 . Carefully place the back section in position on the angles as shown in Figure 4. W ARNING: The section MUST be fully supported to prevent it fr om falling! Failure to comply with this warning may result pr oper ty damage, severe per sonal injury or death! Figure 4 - Section P ...
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Smith Cast Iron Boilers 28HE - page 9
Page 9 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS 5 . Inser t the large por t connector with its steel inner ring into the upper port. 6 . Inser t the two round por t connectors into the lower por ts. NO TE: Appl y the spra y adhesive supplied with the boiler to the port recess to hold the por t connector in place if necessary . ...
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Smith Cast Iron Boilers 28HE - page 10
Page 10 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS 9 . Assemble the rest of the sections f ollowing steps 3 through 8 abov e. 1 0 . Hydrostatically test the boiler by f ollowing the instructions on page 8. 11. While the boiler is being filled confirm that all of the draw r ods are properly tor qued and that there are no leaks. 1 ...
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Smith Cast Iron Boilers 28HE - page 11
Page 11 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS Observation P or t Assembl y , Figure 10 1 . P osition the hinged end of the steel flapper door , item 5, ov er the boss on the obser vation por t cov er , item 4. 2 . Drive the e xpansion pin, item 7, through the hinge bosses to secure the door to the cov er . 3 . Inser t the h ...
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Smith Cast Iron Boilers 28HE - page 12
Page 12 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS Observation P or t Installation 1 . Screw the f our 5/16-18 x 1 1/2" studs into the tapped holes around the obser vation co v er opening in the back section. 2 . Place the obser vation por t cov er assembly ov er the studs and install the washers and nuts . Tighten the nuts ...
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Smith Cast Iron Boilers 28HE - page 13
Page 13 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS T ankless Heater Installation - Optional 1 . Clean the heater flange to remove an y r ust or debris. 2 . Install the f our 7/16" x 1 1/2" studs into the tapped holes in the tankless heater flange on the section, Figure 12. Figure 12 - T ankless Heater Installation 3 . ...
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Smith Cast Iron Boilers 28HE - page 14
Page 14 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS Figure 15 - Back Section T apping Locations T able 5 - Water & Steam T appings Relief & Safety V alve Piping Install the pressure relief or safety v alve in the 3" NPT opening in the top of the back section, Figure 14. W ARNING: The discharge of the pressure relief ...
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Smith Cast Iron Boilers 28HE - page 15
Page 15 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS Figure 16 - Relief & Safel y V alve Piping W A TER BOILER PIPING The supply and retur n connections should be sized to suit the system, see Figures 14, 15, 17, 18 and T ables 5 & 6. Do not pipe the supply from the bottom por t or the return to the top por t, the boiler w ...
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Smith Cast Iron Boilers 28HE - page 16
Page 16 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS Figure 17 - Optional Return Y oke Figure 18 - Boiler Contr ol Locations Piping For Use With Cooling Units The boiler , when used in connection with a refr igeration system, must be installed so the chilled medium is piped in parallel with the boiler . Appropriate valves m ust be ...
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Smith Cast Iron Boilers 28HE - page 17
Page 17 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS Figure 19 - T ypical Single W ater Boiler Piping Figure 20 - T ypical Multiple W ater Boiler Piping ...
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Smith Cast Iron Boilers 28HE - page 18
Page 18 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS Figure 21 - Chilled Medium Diagram Cleaning of Water Boiler s Nor mally the cleaning of water boilers is unnecessary unless there is unusually hea vy contamination of the boiler or system. The burner must be installed and made operational along with the operating, limit and othe ...
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Smith Cast Iron Boilers 28HE - page 19
Page 19 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS Minimum F eed W ater Condensate Receiver Boiler I=B=R Gross Output Ev aporation Rate Pumping Rate Capacity Model MBH kW GPM L/hr GPM L/hr Gallons Liters 28HE-S-4 900 264 1.9 7.3 3.9 14.8 37 140 28HE-S-5 1166 342 2.5 9.5 5.0 18.9 48 182 28HE-S-6 1433 420 3.1 11.7 6.2 23.5 59 223 ...
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Smith Cast Iron Boilers 28HE - page 20
Page 20 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS Figure 23 - T ypical Steam Piping - Gravity Return f or Multiple Boilers Figure 24 - T ypical Steam Piping - Pumped Return f or Multiple Boilers ...
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Smith Cast Iron Boilers 28HE - page 21
Page 21 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS CA UTION: A v oid skin contact with c leaning solution to prevent injury! If e y e or skin contact occur s flush with large quantities of water . NO TE: Some locations do not allo w this solution to be used. Check with the local authority having jurisdiction. 5 . Mix the cleanin ...
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Smith Cast Iron Boilers 28HE - page 22
Page 22 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS W ater Boilers Fill the boiler and all of the radiation with water to the required system pressure. Completely purge the system of air and adjust the system pressure as needed. CA UTION: Thermal shock of water boilers m ust be av oided! W ater circulation must be estab lished be ...
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Smith Cast Iron Boilers 28HE - page 23
Page 23 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS CA UTION: If the flue gas temperature exiting the smoke hood is less than 320 ° F, 160 ° C at full rated input, the number of heat transfer r ods in the boiler must be reduced. Failure to pr otect the boiler from low flue gas temperatures will shorten the life of the boiler an ...
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Smith Cast Iron Boilers 28HE - page 24
Page 24 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS BOILER MAINTENANCE W ARNING: Servicing, inspection and adjustment of the boiler must be done b y a trained technician in accor dance with all applicable local and national codes. Improper servicing or adjustment can result in property damage, severe per sonal injury or death! Th ...
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Smith Cast Iron Boilers 28HE - page 25
Page 25 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS Figure 26 - Boiler Assembl y ...
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Smith Cast Iron Boilers 28HE - page 26
Page 26 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS (1) Smokehood assemb ly includes the smokehood, slide damper , angle brack et and hardware. (2) Cleanout cov er assembly includes the cleanout co v er , insulation, rope and mounting hardware. 1 F ront Section 3621 111111111111111 2 Graphite P or t Connector Set 60375 3456789 1 ...
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Smith Cast Iron Boilers 28HE - page 27
Page 27 SERIES 28HE BOILER INST ALLA TION AND OPERA TION INSTR UCTIONS 33 Obser vation Glass Co ver Plate 3420 1 11111111111111 ns Rear Observation P ort Hardware 71301 1 1 1 1 1 1 111111111 Burner Mounting Plate Assembly , 9" 70641 Burner Mounting Plate Assembly , 10 1/4" 70640 34 (3) Burner Mounting Plate Assembly , 12 1/2" 70510 B ...
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Smith Cast Iron Boilers 28HE - page 28
dizziness headaches nausea vision problems loss of muscle control weakness shortness of breath unclear thinking unconsciousness W ARNING Any appliance that burns natural gas, propane gas, fuel oil, wood or coal is capable of producing carbon monoxide (CO). Carbon Monoxide (CO) is a gas which is odorless, colorless and tasteless but is very toxic. I ...
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