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845-292-6400
135 Chestnut St, New Paltz NY
845-256-6400
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518-438-6433
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Biasi 3Pass Cast Iron Boiler Featured Product
Biasi Oil Fired 3Pass Boiler






A 3-pass boiler design is the most efficient way to get the maximum amount of heat from the fuel, since it contains three times as much interior surface area (compared to a single-pass boiler) to extract heat from.


Technical Advantages
  • Gas or oil burner compatible
  • Easy access swing door
  • May be direct vented with no flue required; can be direct vented outdoors with optional direct vent kit.
  • Low water content boiler heats up faster with less fuel
  • Efficient 3-pass heat exchanger boiler design
  • GG20 cast-iron construction for superior heat retention and durability
  • ASME, UL, and IBR listed
  • 58 psi cast-iron construction

The B-10 boiler systems have been heating residential and commercial buildings throughout the world for years. It has proven its fuel efficiency and durability in countries where fuel can cost up to four times as much as in the U.S. The same fuel saving technology is now available here in North America. With the three pass boiler design and low water content, heat is quickly supplied for your heating zones and hot water needs. Combined with an outdoor reset control, you can achieve a fuel savings of up to 40% over conventional single pass boilers. You will also have peace of mind since the B-10 boiler package complies with ASME and UL standards and is IBR rated. The B-10 boiler system is the cost-competitive heat and hot water system of choice.

Boiler Model #
Heating capacity
Gross Input Burner Capacity
Net Output (MBH)
AFUE Efficiency (%)
Water Content (Gals.)
Length (L) (Inches)
Weight (Lbs.)
   
G.P.H.
MBH
         
B-3
67
0.55
80
58
86.6
3.7
15.5
247
B-4
110
0.90
115
96
85.8
4.7
19.5
307
B-5
124
1.00
140
108
87.2
5.7
23.5
367
B-6
153
1.25
175
133
86.7
6.7
27.5
427
B-7
185
1.50
215
161
86.8
7.7
31.5
486
B-8
211
1.80
257
183
86.8
8.7
35.5
546
B-9
257
2.10
298
223
86.5
9.7
39.5
606

Maximum water working pressure: 58 PSI. (1) The burner input is based on oil with a heat value of 140,000 BTU/Gal.; (2) The net output ratings shown are based on piping and pick-up allowance of 1.15; (3) The efficiency ratings are based on a combustion condition of 12.5% CO2. Warranty: The BIASI B-10 boiler has a limited lifetime warranty. A copy is provided with each boiler or is available from your dealer. Built in accordance with the requirements of ASME boiler and pressure vessel code.

Click here to download a printable .pdf file of this product manual

Click here to download a printable information sheet of this product (.pdf)


RS-44 (R424A)

The new Zero ODP Drop-in Replacement compatible with all lubricants

HCFC 22 is a controlled substance under the Montreal Protocol and European Regulation and will be phased out on a global basis with all other HCFCs. HCFC 22 is already banned in Europe in most new equipment and is subject to a rapidly tightening cutback schedule. It is, therefore, now time to consider the options for replacing HCFC 22 which will become restricted in availability as these cutbacks come into effect.

RS-44 provides a low cost and easy solution to replacing HCFC 22 by avoiding a costly and technically unsatisfactory retrofit situation. By definition, any replacement for HCFC 22 must have no ozone depleting ability so that, in contrast to replacing CFCs (e.g. R12, R502) where there were 'interim' blends available (largely containing HCFC 22) enabling the existing lubricant in the system to be used, this is not an option when seeking to replace HCFC 22. R424A has a zero Ozone Depletion Potential, a similar performance to HCFC 22 and can be used with all types of lubricants.

Comparison with HCFC 22

  • Higher Coefficient of Performance
  • Lower discharge temperature
  • Zero Ozone Depletion Potential
  • Non-flammable
  • Lower discharge pressure
  • Similar capacity
  • Compatible with existing oils
  • No hardware changes needed

More Information and Specifications:

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Honeywell Universal Aquastat






With Reliable Honeywell Solid State Technology

Universal Replaces L8148 and L8124 Universally compatible, easy to install and manufactured with that famous Honeywell reliability, the L7224U allows for quick diagnostics updates through an easy-to-read LED display enhanced with a system of flashing lights. It’s like an express checkout service for every installation. For quality circulator, oil burner and boiler control for today’s systems and tomorrow’s advances, the L7224U Aquastat is a "state-of-the- art" solution. Make the switch from electromechanical to electronic with the universally compatible L7224U.
  • Superior Performance — +/- 2° F accuracy and faster response times
  • Easy Installation — Improved terminal layout and multiple knockouts make change-outs a snap
  • Increased Flexibility — Vertical, Horizontal and Flush-Mount options; configurable for single-function use
  • Multi-Function Display — Get setpoint, temperature reading and diagnostic information at your fingertips

EnviraCON-Enabled

The Honeywell L7224U Aquastats are all EnviraCOM-enabled. EnviraCOM is a low-cost 3-wire communication protocol that allows different devices — such as EnviraCOM communicating thermostats, aquastats and oil primaries — to connect and share information. So, whether you’re replacing old controls or installing new equipment, those customers are ready for Honeywell EnviraLINK™ a communication and remote diagnostic service that links your customers' equipment with your office.

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All Rights Reserved
Last Updated:3/19/2017
yaunco@yaunco.com


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