CHAPTER!
GENERAL
DESCRIPTION
AND
PRINCIPLES
OF
OPERATION
No. 6 fuel oil, all references
to
this fuel should
be
considered ap-
plicable
to
all grades
of
heavy oil.
The boiler and related equipment installation, by
others,
is
to
be
in compliance with the standards
of
the National Board
of
Fire Underwriters. In-
stallation also should conform
to
state and local
codes governing such equipment.
Prior to instal-
lation, the proper authorities having jurisdiction
are to
be
consulted, permits .obtained, etc. All
boilers in the
above
series
comply,
when
equipped with optional equipment,
to
Industrial
Risk Insurers (I.R.I.), Factory Mutual
(FM), or
other insuring underwriters requirements.
A.
THE
BOILER
The "CBW" Boiler
is
a packaged :firetube boiler
of
welded steel construction and consists
of
a
pressure vessel, burner, burner controls, forced
draft
fan,
damper, air pump, refractory and ap-
propriate boiler trim.
Rated Capacity . .
.100 through 400)-IP
Operating Pressure .Steam 15-250 psig,
or higher if.specified
Hot Water . . . . . . .
.30-250 psig
or
higher if specified
Fuel . .
; . . . . . . . .Oil
or
Gas
or Combination
Ignition
.Automatic
Firing . . . . . . . . . .Full Modulation
Through Operating
Ranges
CHAPTER 1-2
Burner (Oil)
.......
(Low Pressure)
Air Atomizing
Burner (Gas)
......
Non-premix
Otificed Type
Air Damper . . . . . . . Rotary Type
(Electrically
Modulated)
Steam Trim . . . . . . . ASME Code
Water Trim . . . . . . . ASME Code
The horsepower rating
of
the boiler
is
indicated
by
the numbers following the fuel series. Thus,
CBW700-200 indicates a gas fired 200 HP boiler.
B.
THE
BURNER
AND
CONTROL
SYSTEM
The oil burner
is
of
the low pressure, air
atomiz~
ing (nozzle) type. The gas burner
is
of
the non-
premix orifice type. The burners are ignited
by
spark ignited gas pilot. The pilot
is
of
the inter-
rupted type and
is
extinguished after the main
flame
is
established.
NOTE:
A Series 100 boiler
is
usually
equipped with a light oil pilot
al-
though a gas pilot frequently
is
used.
The burners equipped to burn oil and gas include
equipment for each distinct fuel.
Since the burner
uses only one type
of
fuel at a time, a gas/oil
selector switch
is incorporated in a combination
burner.
It
is
important that the burner model and serial
number, shown on the nameplate,
be
included
in
any correspondence
or
parts order.
750-150
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