Dunkirk Excelsior EXB Series - Manual (Page 5)

5
1.1 OIL FIRED BOILERS
Boiler is low pressure, sectional cast iron constructed
and tested for maximum working pressure of 65 psi in
accordance with A.S.M.E. (American Society of Mechanical
Engineers) Section IV Standards for cast iron heating
boilers. Capacity rated in accordance with AHRI (Hydronics
Institute).
Boiler is pressure fired natural draft (chimney vented)
oil fired hot water boiler comprised of cast iron sections,
available with 4, 5, 6 or 7 sections. Sections are held
together by push nipples and threaded rods.
4,5 and some 6 section boilers may be factory equipped for
direct vent installations. Direct vent instructions are cov-
ered in a separate supplemental instructions document.
Boiler models are capable of firing #2 fuel oil from 0.75
gph up to 1.90 gph.
Boilers include -
• Limit, 220° F maximum, operating control with integral
low water cut off.
• Temperature and pressure gauge
• 30 psi relief valve
• Drain valve
1 - INTRODUCTION
WARNING
Installations of boilers and venting shall be done
only by a qualified expert and in accordance with
this manual. Installing or venting a boiler or any
other oil appliance with improper methods or
materials may result in serious injury or death due
to fire or to asphyxiation from poisonous gases
such as carbon monoxide which is odorless and
invisible.
! NOTICE
Surface rust on cast iron sections may be attributed
to manufacturing process as well as condensation
during storage. Surface rust is normal and does not
affect performance or life of boiler.