Saturn Series Boilers

Saturn Series Boilers:

Features and Components | Dimensions and Specifications | User Manual

Compact, Lightweight, Durable and Highly Efficient
Up to 84.12% A.F.U.E. Efficiency Rating
Rugged Industrial Design Steel Fin Tube Heat Exchanger Built to ASME Standards
Ideal for Multiple Unit Installations
Approved for Natural Gas or Propane Gas installations
Approved for Combustible Floors & Closet/Alcove installation
All Controls/Safety Devices are Factory Wired. A simple molex plug is used for vent damper connection

SATURN SERIES boilers offer more than just comfort…
Allied Engineering’s unique energy-efficient DOUBLE PASS design provides the ultimate in quality construction, performance and durability (built to last) along with low operating cost. Ease of installation makes our boilers well-suited for either new construction or renovation.

Exclusive Zone Control Systems on models SG135 to SG270
Our factory installed Zone Control Board simplifies wiring for quick and easy installation. Zones that are in use are displayed via L.E.D. lights. This unique system is ideal for monitoring and instant trouble-shooting. The built-in transformer is sized to accept four separate comfort zones. Additional boards can be installed to increase the zone capabilities in multiples of four.

Welded Steel Fin Tube Heat Exchanger Advantages

Features Advantages
All welded construction.........no problem gaskets or push nipples
Long life expectancy.............exceeds that of other tubular designs
2” dia. steel fin tube.............eliminates most flow problems
Lightweight for handling.......1/3 to ½ that of similar output cast iron

“Package” Convenience available on boilers SG135 to SG270.
For installation convenience our “PS” or Packaged boilers include a number of extra components: circulator wired and mounted on a custom cast iron adapter, air purger, combination fill/pressure regulator valve, automatic air vent, and expansion tank.

Certified A.F.U.E Ratings for Boilers Under 300,000 BTU/H

Model	Input BTU/H	Output BTU/H	AFUE % Continuous Pilot Natural Gas	AFUE % Intermittent Pilot Natural Gas	AFUE % Continuous Pilot Propane	AFUE % Intermittent Pilot Propane
SG-135	135,000	113,670	80.73	83.56	80.56	83.46
SG-180	180,000	151,560	80.94	83.44	81.19	83.64
SG-225	225,000	189,450	81.73	83.61	82.20	84.05
SG-270	270,000	227,340	82.08	83.62	82.60	84.12

A.F.U.E. Certified Boilers Must be Installed with SUPER HOT Automatic Vent Damper
Models over 300,000 Btu/h are not specified to A.F.U.E. ratings

Zone Control Board
Never has zone control wiring been easier with four removable terminal plugs separately labeled for each zone.

Ten Year Warranty Protection
Super Hot SATURN SERIES boilers have been manufactured to the highest standard of quality in material and workmanship. This proven design comes with our guarantee that the heat exchanger will be free from defects in material and workmanship. See printed Warranty for details.

Combustion Efficiency Ratings For Models SG315 and Over

Model No.	Input Btu/h	Output Btu/h	Combustion Efficiency %
SG315	315,000	265,230	84.2
SG360	360,000	303,120	84.2
SG400	400,000	336,800	84.2
SG450	450,000	378,000	84.0
SG495	495,000	415,800	84.0

Save fuel and cost with modular boiler installations