
THE PARKER DESIGN
The Parker water tube design 
offers an extremely efficient, reliable steam boiler built for the long 
term and ease of maintenance. 
The Parker design offers many 
advantages. Compare ours to the 
competition.
ADVANTAGES
1. Safety
Our ASME tube bundle is extremely flexible and offers a long life 
with a 25 year warranty against 
thermal shock. No Parker Boiler 
has ever been known to experience an internal explosion.
LOW NOx PREMIX
INDUSTRIAL PACKAGED STEAM BOILER
Horizontal Drum Sectional Water Tube
7-25 HP Gas Fired
103L Steam Boilers 7-25 HP
Low NOx Premix
Industrial Packaged
Steam Boiler
Pressures to
250 PSI
2. Low NOx System
Parker was the first manufacturer 
to achieve SCAQMD Rule 1146.2 
NOx Certification. Initial installations began in 1991 and to date 
thousands of Low NOx boilers are 
on-line providing reliable operation for our customers.
3. Durable Low NOx Burners
Parker heavy duty premix metal 
fiber burners not only provide the 
lowest emissions possible but also 
provide long durable service life.
4. VFD
Variable Speed Blowers for electrical energy savings on 2-Stage 
or Modulating units (standard over 
15HP).
5. Low Cost, Efficient Operation
The staggered tubing design provides a multi-baffled heating sur-
face to increase efficiency. The 
Premix system offers precise fuel 
air control for optimum efficiency.
 6. Fast Heat-Up 
Our boiler requires less than ten 
minutes to heat up to 100 PSI from 
a cold start which is a considerable time and fuel saver.
7. Accessible Internal 
Inspection
Cabinet doors can easily be 
removed in a matter of minutes, 
making the internal boiler, drum, 
tubes, and burners readily accessible. Easy to remove gasketed 
access plugs are provided at both 
ends of every tube. Boiler inspections can be accomplished quickly 
and at low costs.
SCAQMD
Certified
to 1146.2
8. Ease of Inspection and Repair
Any boiler may eventually require 
re-tubing depending on care and 
operating conditions. Re-tubing 
does not require special tools, 
skills or welding as is necessary 
on most boilers designed with 
rolled tubes.
103L Steam Boilers 7-25 HP
PARKER BOILER CO.
5930 Bandini Boulevard 
Los Angeles, CA 90040 
Tel (323) 727-9800 
Fax (323) 722-2848 
www.parkerboiler.com
BROCHURE 103L 0E7
"Never a Compromise for Quality or Safety" "Never a Compromise for Quality or Safety"

LOW NOx PREMIX 
INDUSTRIAL PACKAGED STEAM BOILER
Horizontal Drum Sectional Water Tube
7-25 HP Gas Fired
103L Steam Boilers 7-25 HP
Safety Valve
Horizontal steam drum extra 
heavy seamless 1/2” thick 
steel, over 60,000 PSI tensile 
strength
Drum inspection openings 
both heads
Easy to remove access plugs 
on each end of the tube
Sectional tubes removable by 
disconnecting two unions
Tubes: 1-5/16” OD, heavy 1/8” 
thickness, double welded to 
headers
Premix blower/mixer
Pressure gauge
Secondary, M.R. probe type 
low water cutoff
Water level pump control & 
primary low water cutoff
Pre-heater
Staggered tubes flexibly 
designed for free expansion 
and contraction provide 
8-pass self-baffled heating 
surface
Efficient Parker premix 
metal-fiber gas burners 
provide high combustion 
efficiency and uniform heat 
distribution
Heavy Steel Boiler frame for 
setting on concrete floor
THE PARKER DESIGN
A time proven product backed by 
one of the largest and most successful manufacturers of packaged steam boilers whose name 
is synonymous with quality and 
safety. Every boiler is thoroughly 
factory fire tested and is required 
to meet the highest standards in 
all places of mechanical and operating efficiency before shipment.
9. Codes
All boilers are built in accordance 
with the ASME Power & Heating Boiler Codes, Sections I & IV. 
Boilers above 15 PSI are furnished 
with the “S” Stamp and Trim. 
Boilers for 15 PSI are normally 
furnished with the “H” Stamp and 
Trim. All Boilers are inspected 
103L Steam Boilers 7-25 HP
and registered with the National 
Board of Boiler and Pressure Vessel Inspectors. All individual gas 
and electrical controls are Certified or UL Listed. All Low NOx, 
outdoor, propane and natural gas 
fired models are ETL Listed as 
“Industrial and Commercial Gas 
Fired Packaged Boilers” and certified to UL795. 
All units are provided with trim 
and controls to meet ASME CSD-1 
standards for “Controls & Safety 
Devices for Automatically Fired 
Boilers”. In addition, all units also 
meet the standards of the International Conference of Building Officials, the International Association 
of Mechanical & Plumbing Officials and the Uniform Mechanical 
Code.
Parker's Premix Metal Fiber Burner System
Shown burning and achieving better than 12ppm NOx. Standard 
units achieve 20-30ppm NOx as required by SCAQMD.
PARKER BOILER CO.
5930 Bandini Boulevard
Los Angeles, CA 90040
Tel (323) 727-9800
Fax (323) 722-2848
www.parkerboiler.com
BROCHURE 103L 0E7