You owe it to yourself to warm up to our BIASI boiler systems. Our economical and highly efficient 3-pass design offers the flexibility of using either an oil or gas burner. Our unique GG20 cast-iron block, with its 72 PSI rating and easy-access swing door, is unsurpassed in durability and efficiency, providing years of trouble-free operation. There are 7 models ranging from 265 to 658 MBH, which are well-suited for commercial or multi-unit buildings. We have tested our systems extensively to Hydronics Institute Standards. BIASI's foundry is ASME certified.
Boiler Model #

Number
of
Sections
Heating
Capacity
Input
Oil

Input
Gas
Net Output
(MBH)
Efficiency (%)
Water Content
(Gals.)
Length
(L) (Inches)
Weight
(Lbs.)
   
G.P.H.
MBH
          
B-40/6

6
265
2.20
308
230
86.0
17
34.8
902
B-40/7

7
352
2.90
406
305
86.7
20
39.5
1023
B-40/8

8
437
3.60
504
380
86.8
23
44.4
1144
B-40/9

9
524
4.30
602
456
87.0
26
49.2
1265
B-40/10

10
610
5.00
700
532
87.2
28
53.9
1386
B-40/11

11
696
5.70
798
607
87.2
31
58.8
1507
B-40/12

12
783
6.40
896
684
87.4
34
63.8
1628

Maximum Water Working Pressure 72psi

Maximum Relief Valve is 50 psi @ 900 MBH

A 3-pass boiler design is the most efficient way to get the maximum amount of heat from the boiler. The design extracts heat from three times as much interior surface area of the boiler, compared to a single-pass, “pin-type” boiler design.
Technical Advantages
  • GG 20 corrosion resistant cast-iron
  • 72 psi cast-iron construction
  • Easy-access swing door
  • Super efficient, 3-pass flue/heat exchanger
  • Low water volume
  • Multi-fuel capability
  • Extra heavy insulation for low jacket & standby losses
  • ASME and IBR listed

The BIASI B-40's heat exchanger path is up to 15 feet, and the 3-pass design heats more surface area per gallon burned, with 25% less heat loss than pin-type boilers.

©Quincy Hydronic Technology, 10/2002

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