Technical Drawing

BURNHAM COMMERCIAL 27 February 2008
MPC Multiple Pass Commercial Boiler – Suggested Specifications
Heating, Ventilating and Air Conditioning
15500-3
the UL (Underwriters Laboratories) logo and comply with all UL795 (gas) and
UL 726 (oil) safety standards. Section assembly shall be hydrostatically pres-
sure tested @ 120 PSI prior to shipment. Packaged boiler shall be shrink
wrapped for protection.
c. [USE FOR FACTORY ASSEMBLED SECTIONS] Cast iron sections shall be
factory assembled and installed as a complete block assembly with boiler
jacket, burner, and controls shipped separately
6. Cast iron burner swing door shall be lined with lightweight refractory insulation and
shall have reversible hinges, allowing a minimum of 90° swing to the left or right side
of boiler, allowing unobstructed access to combustion chamber and flue passages. The
flue passages and combustion chamber shall be accessible from the front of the boiler
for cleaning, and from the back of the boiler to vacuum soot and combustion residue
from the fireside.
7. Rear flue collector, with test tapping, shall be constructed of cast iron and shall be con-
cealed under a highly insulated boiler jacket.
8. Boiler shall be equipped with a flange mounted flame retention type burner. Input,
output and combustion efficiency shall be certified to efficiency test procedures speci-
fied in I=B=R/BTS-2000. Boiler efficiencies must meet ASHRAE 90.1 and the Na-
tional Energy Policy Act of 1992 requirements.
9. Boiler shall be constructed for 80 PSI water working pressure in accordance with the
ASME Section IV Rules for Construction of Heating Boilers. Individual sections shall
have been subjected to a hydrostatic pressure test of 200 PSIG at the factory before
shipment and they shall be stamped or cast with the ASME ‘H’ symbol.
10. The boiler shall be provided with a heavy duty 20 gauge steel jacket with modular 4-
inch thick insulation and have a rust resistant powder coat finish. The boiler jacket
shall contain a concealed electrical chaseway for power and limit circuit wiring within
the top jacket panels, providing a clean finished look when the jacket is installed. Indi-
vidual lift-off jacket side panels may be installed after system piping and allow ease of
access to the boiler sections.
11. Boiler trim shall include:
a. One (1) 3-1/2” inch dia. combination pressure-temperature gauge.
b. Safety high limit aquastat; auxiliary safety high limit aquastat with manual re-
set (must specify on order); low fire hold aquastat (LHL and full modulation
burners only).