Crown Series 24 User Manual
■ Cast iron sectional heat exchanger
Commercial, Forced Draft
Hot Water or Steam Boiler
Commercial, Forced Draft
Hot Water or Steam Boiler
For Businesses, Institutions,
Apartments and other
commercial buildings
For Businesses, Institutions,
Apartments and other
commercial buildings
Commercial Hot Water
or Steam Boiler
Commercial Hot Water
or Steam Boiler
and push nipples
■ Vertical flue design
■ Easily assembled with short individual draw rods
■ Optional tankless heater for domestic hot water
■ Top or rear vent connections
■ Side clean out plates
■ Optional Return Temperature Control (RTC)
■ Sizes from 342,000 to 1,852,000 BTU/hr output
Heat exchanger constructed
and tested in accordance with
ASME Section IV standard.
Ten reasons why you need
Commercial Hot Water
or Steam Boiler
Commercial Hot Water
or Steam Boiler
the Series 24 commercial boiler
1. Optimum for large installations –
Available in ten sizes from 342,000 to
1,852,000 BTU/hr output.
2. Gas, oil or combination gas/oil fired –
Customer’s preference in the choice of
fuels for economy and availability may be
an important part of the purchase decision.
3. Hot water or steam – The Series 24
has been designed to meet a wide variety
of installations.
4. Tankless heater available for domestic
hot water – Convenient for small spaces or
difficult installations that preclude a separate
water heater. Finned copper coil heats water
fast, and piping is easier to install.
5. Cast iron construction – Cast iron heat
exchanger sections and push nipples provide
long life. Cast iron resists the effect of
petroleum-based chemicals such as corrosion
inhibitors, pump lubricants and antifreeze. Cast
iron push nipples are important because they
expand and contract at the same rate as the
sections they join, which provides integrity to
the entire assembly.
6. Convenient delivery in sections – Delivery
is available in easily handled sections that can
be maneuvered through doorways and down
stairs making this boiler ideal for installations
where the boiler room is not readily accessible.
7. Easy assembly – Once in place, the sections
are easily assembled using a 3/4-inch drive
ratchet with a 1-1/16-inch-deep socket and
a wrench. Short draw rods pass through the
sections’ reinforced lugs, resulting in fast,
strain-free assembly.
8. Versatile venting options – The Series 24
is a forced draft boiler that eliminates the need
for high chimneys or draft inducers. Uniquely,
the boiler can be vented from either the top or
rear for maximum installation flexibility. Rear
outlet venting requires only 6-1/2 feet of
vertical clearance from floor to ceiling.
9. Hassle-free maintenance – All regular
maintenance access areas are located on the
left side, allowing the Series 24 to be installed
9 inches from the right sidewall. Removable
jacket panels and flue cover plates simplify
access to the heating surfaces.
10. It’s a CROWN! Satisfied customers are
our goal. So, all CROWN boilers employ the
latest technology for performance and safety.
We offer a wide range of products to meet
each customer’s individual needs, and we
offer competitive pricing, attractive warranties
and optional extended coverage.
Top or rear flue outlet
with adjustable lock-type
damper includes
tapping for outlet
pressure readings
Left side jacket
panels and cleanouts
for easy access to
all flue surfaces
Tankless heater
for domestic
hot water
Cast iron vertical
flue design with
p
inned heating
s
urface achieves
maximum heat transfer
Rear cover includes
flame observation
port and plugged
tapping for over-fi
draft readings
R
einforced lugs and
individual draw rods
f
or easy assembly
Wet base
construction for
improved circulation
re
Front mounted
controls for easy
adjustment and
maintenance
Burner mounting
plate with flame
observation port
Your choice
of a Beckett
gas or oil burner
Cast iron nipples
ensure integrity
of section assembly
Standard Equipment
All Boilers – Sections unassembled, flush
insulated jacket, burner mounting plate, burner
adapter plate, rear flue damper (top outlet
optional), flue canopy, rear observation port cover,
target wall (V-903A), and miscellaneous plugs,
bushings and fittings.
Steam Trim – 15 PSI safety valve, L404A
pressuretrol, gauge glass assembly, steam gauge.
Water Trim – 30 PSI safety relief valve, L4006A
high limit, pressure temperature gauge.
Oil Boilers – Flange mounted flame retention
oil burner furnished with 2 stage fuel unit, primary
control and dual oil valves.
Gas Boilers – Flange mounted gas burner
with standard controls meeting the latest UL
requirements, dual gas valves and electronic
ignition.
Optional Equipment
Top outlet flue damper, tankless heaters, 50 PSI
relief valves (water), and combustion and
hydronic controls to meet ASME CSD-1.
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