Biasi B40/6 Manual And Installation Instructions page 11

BIASI B/40
The following information applies only to the BIASI B-40 series boilers at a maximum output
for power venters or lined chimneys only.
BURNER MANUFACTURER
Boiler Model
Burner Model
Fuel
Input
Min. Gas Inlet Size
Manifold in w.c.
Air
Head
BURNER MANUFACTURER
Boiler Model
Burner Model
Fuel
Input
Min. Gas Inlet Size
Manifold in w.c.
Air
Head
Good, reliable operation with a minimum of service starts with attention to the small details:
1. Setting the electrode and flame rod settings against manufacturer's specs to insure proper operation.
2. Installing properly sized gas piping according to BTU input required and length of gas line run.
3. Making sure there is proper manifold pressure before and after the gas valve using a calibrated manometer.
4. Checking draft at the breeching to insure it is adequate to overcome flue gas resistance.
5. Setting the air band properly with well maintained instruments. A good target is 9.5% to 10.5% of (CO
to 2.5% of (O ) for natural gas, or 10% to 12% of (CO
2
Note: Oil and Gas burners on B40-series boilers cannot be properly commissioned
To determine how much gas is coming into the
burner, or to set the gas meter correctly, the follow-
ing formula can be used.
3
Ft /hr = [3600/(sec. Per rev.)]*(Size of gas meter)
The chart to the right can be used to determine the
flow rate depending upon the time per revolution and
the size of the gas meter dial.
All manuals and user guides at all-guides.com
8. Burner Setup:
B-406 B-407
SU-3 SU-3
Natural Natural
315 420
1" 1"
1.95" 3"
9.5 14
6 11
B-406 B-407
SU-3 SU-3
Propane Propane Propane
315 420
3/4" 3/4"
1.65" 2.4"
7.25 15
6 10
Heat Wise
B-408 B-409 B-410
SU-4 SU-5 SU-5
Natural Natural Natural
499 577
1" 1"
3.5" 2"
21 7.5
20 2"
Heat Wise
B-408 B-409 B-410
SU-4 SU-5 SU-5
Propane Propane
527 634
1" 1"
2.75"
21.5
18 2"
) or 5% to 2.5% of (O
2
Seconds per
Revolution
20
25
30
35
40
45
50
55
60
B-411 B-412
SU-6 SU-6
Natural Natural
672 847 954
1" 1" 1-1/4"
2.8" 1.16" 1.4"
9 4.25
2" 2-5/8" 2-5/8"
B-411 B-412
SU-6 SU-6
Propane Propane
740 847 954
1" 1" 1"
1" 1.27"
5.2 5.8
2" 2-5/8" 2-5/8"
) for lp gas
2
without instruments and gauges.
Size of Gas Meter Dial
(Cubic Foot)
0.5 1
90 180
72 144
60 120
51 103
45 90
40 80
36 72
33 65
30 60
PAGE 11
5
) or 5%
2
2
360
288
240
206
180
160
144
131
120