- Insert in the blank spaces provided, the applicable model number, capacity, fuel, and electrical data.
- Delete the items in parentheses, or the items marked *, which are not applicable to the project requirements.
- Insert, where applicable, optional non-standard features desired.
Specification
Boilers:
Furnish and install ___________ forced draft three-pass firetube type full wet back Scotch type factory packaged boilers for ___________ (No. ___________ oil)( ___________ gas)(combination ___________ gas and No. ___________ oil) complete with fuel burning equipment, safety and operating controls, and appurtenances as hereinafter specified. The boiler unit(s) shall be fully assembled and wired at the manufacturer's factory, requiring only connection to power, fuel supply and system piping to be ready for operation.
1. Boiler unit(s) shall be Burnham model number ___________ as manufactured by Burnham Corporation designed for (15 psi steam)(150 psi steam with safety valve(s) set to relieve at ___________ psi)(___________ psi water with relief valve(s) set to relieve at ___________ psi), and shall have a gross output of ___________ MBH or ___________ boiler horsepower. Boiler heating surface measured on the fireside shall be not less than five square feet per boiler horsepower. Furnace heat release rate shall not exceed 150,000 BTUH per cubic foot.
2. Boiler(s) shall be of the three-pass full wet back firetube design, with two passes of fire tubes. Use of cast refractory baffling to provide the second or third pass shall not be permitted. All tubes shall be set with roller expander at each end, and shall be flared. Pressure vessel(s) shall be constructed, tested and marked in accordance with Section IV, Low Pressure Heating Boilers, or Section I, High Pressure Boilers of the ASME Code, as applicable for the working pressure hereinbefore specified, and shall be registered with the National Board of Boiler and Pressure Vessel Inspectors.
3. Boiler(s) shall be mounted on a heavy structural steel base with extension beyond boiler front for protection of burner. The burner shall be mounted at the front of the boiler, with all mechanical equipment mounted on the boiler base, except those items necessarily remote mounted due to size or operational function.
4. Boiler(s) shall be provided with top vent connection at rear of boiler with full size access opening to rear tube sheet, hinged gas tight front flue cleanout doors with refractory lining keyed in place and providing access to front tube sheet without disconnecting any fuel lines or electrical wiring, sixteen inch diameter rear furnace access door with Pyrex observation port, factory installed enameled steel jacket with two inch fiberglass insulation, lifting lugs, and connections for controls, supply and return piping, and bottom lowdown.
5. Trim and controls for steam boiler(s) shall consist of steam pressure gauge, ASME side outlet safety valve(s) set to relieve at ___________ psi, combination pump controller and low water cut-off with integral water column and three try-cocks, operating steam pressure control, manual reset high limit pressure control, [and firing rate controller with (lo-hi-lo) or (modulation) firing sequence.]
6. Fuel Burning Equipment - The burner(s) shall be factory installed and wired, shall incorporate all necessary devices and controls to make a complete fuel burning system for the type of fuel hereinbefore specified, and shall bear the listing of Underwriters Laboratories, Inc. evidencing compliance with requirements of UL-296 for oil burners and UL-795 for gas burners
* Oil burners for No. 2 oil shall be of the forced draft pressure atomizing type, complete with integral motor driven blower, oil pump, oil nozzle(s), oil solenoid valve(s), ignition assembly, combustion safeguard, motor starters, and all necessary controls for safe and efficient operation in accordance with UL requirements (and FM requirements) (and IRI requirements).
Note: insert additional details such as desired combustion safeguard, firing sequence, and/or other features to meet project requirements.
*Oil burners for (No. 2 oil) (No. 4 oil) (No. 5 oil) (No. 6 oil) shall be of the forced draft low pressure air atomizing type complete with integral motor driven blower, air compressor, oil supply pump, atomizing assembly, ignition assembly, combustion safeguard, motor starters, and all necessary controls for safe and efficient operation in accordance with UL requirements (and FM requirements) (and IRI requirements).
Note: insert additional details such as desired combustion safeguard, firing sequence, oil heating equipment for heavy oil, and/or other features to meet project requirements.
*Gas burners shall be of the forced draft multi-jet type suitable for burning ___________ gas with heat content of ___________ BTU per cubic foot and specific gravity of ___________ delivered to the gas train inlet at a pressure of (___________ inches w.c.) (___________ psig). Burner shall be complete with integral motor driven blower, ignition assembly, combustion safeguard, motor starter, complete gas train including gas pressure regulator and dual gas valves, and all necessary controls for safe and efficient operation in accordance with UL requirements (and FM requirements) (and IRI requirements).
Note: insert additional details such as desired combustion safeguard, firing sequence, and/or other features to meet project requirements.
*Combination gas/oil burner shall consist of an integral assembly of a forced draft pressure atomizing oil burner suitable for burning No. 2 oil and a forced draft multi-jet type gas burner suitable for burning ___________ gas with a heat content of ___________ BTU per cubic foot and specific gravity of ___________ delivered to the gas train inlet at a pressure of (___________ inches w.c.) (___________ psig). Burner shall be complete with integral motor driven blower, oil pump, oil nozzle(s), oil solenoid valve(s), ignition assembly, combustion safeguard, motor starters, complete gas train including gas pressure regulator and dual gas valves, and all necessary controls for safe and efficient operation in accordance with UL requirements (and FM requirements) (and IRI requirements). Changeover to either fuel shall be by means of a manual selector switch which shall energize only those circuits necessary to provide the appropriate timing and sequence of events for the fuel selected, except that the oil pump may continue to operate when firing gas. No burner adjustments or re-positioning of control linkage shall be required when changing from one fuel to the alternate fuel.
Note: insert additional details such as desired combustion safeguard, firing sequence, and/or other features to meet project requirements.
*Combination gas/oil burners shall consist of an integral assembly of a forced draft low pressure air atomizing oil burner suitable for burning (No. 2 oil) (No. 4 oil) (No. 5 oil) (No. 6 oil) and a forced draft multi-jet type gas burner suitable for burning ___________ gas with a heat content of ___________ BTU per cubic foot and specific gravity of ___________ delivered to the gas train inlet at a pressure of (___________ inches w.c.) (___________ psig). Burner shall be complete with integral motor driven blower, air compressor, oil supply pump, atomizing assembly, ignition assembly, combustion safeguard, motor starters, complete gas train including gas pressure regulator and dual gas valves, and all necessary controls for safe and efficient operation in accordance with UL requirements (and FM requirements) (and IRI requirements). Changeover to either fuel shall be by means of a manual selector switch which shall energize only those circuits necessary to provide the appropriate timing and sequence of events for the fuel selected, except that the oil pump may continue to operate when firing gas. No burner adjustments or repositioning of control linkage shall be required when changing from one fuel to the alternate fuel.
Note: insert additional details such as desired combustion safeguard, firing sequence, and/or other features to meet project requirements.
7. Electrical supply to the boiler(s) will be ___________ volts ___________ hz ___________ phase. All control circuits shall be 120 volts, 60 hz, 1 phase, with all switches in the ungrounded leg. Fuse protection for the control circuit shall be provided.