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Boiler manual: • Installation • Start-Up • Maintenance • Parts
41Part No. 550-110-275/1018
Ratings
Boiler
model
number
AHRI
Input
Gross
Steam
output
Gross
Water
output Net AHRI ratings
Boiler
H.P.
Steam Water
Net
firebox
volume
Flue
gas
volume
Draft loss
through
boiler
Flue
outlet
diameter
Boiler
water
content
Combustion
efficiency
Thermal
efficiency
Combustion
efficiency
Thermal
efficiency
Light
Oil GPH
Gas
MBH MBH MBH
Steam
Sq. Ft
Steam
MBH
Water
MBH Oil Gas Oil Gas Oil Gas Oil Gas
Cubic
feet CFM
Inches
W.C. Inches Gallons
Notes:
1, 8
2, 32, 455777—%%%%%%%% — 6 — — —
894
17.6 2540 2040
2052
6598 1584
1784
60.6 83.7 81.2 82.7 80.3 84.0 81.4 83.2 80.7 45.40 1088 0.175 20 274.3
994
20.0 2887 2318 2357 7500 1800 2050 69.3 83.8 81.2 82.8 80.3 84.1 81.6 83.4 80.9 51.48 1242 0.215 20 302.0
1094
22.5 3247 2607 2656 8435 2024 2310 78.0 83.8 81.3 82.8 80.3 84.3 81.8 83.6 81.4 57.56 1397 0.255 20 329.8
1194
25.0 3608 2897 2957 9372 2249 2571 86.7 83.9 81.4 82.8 80.3 84.4 81.9 83.3 81.3 63.64 1555 0.295 20 357.5
1294
27.5 3969 3187 3259 10310 2474 2834 95.3 83.9 81.4 82.8 80.3 84.6 82.1 84.0 81.5 69.72 1710 0.335 20 385.2
1394
30.0 4330 3481 3562 11262 2703 3098 104.0 83.9 81.4 82.9 80.4 84.8 82.2 84.2 81.6 75.80 1866 0.375 20 413.0
1494
32.5 4691 3772 3867 12201 2928 3362 112.6 83.9 81.4 82.9 80.4 84.9 82.4 84.3 81.8 81.88 2020 0.415 20 440.7
1594
35.0 5052 4062 4172 13140 3154 3628 121.6 84.0 81.5 82.9 80.4 85.1 82.5 84.5 82.0 87.96 2175 0.455 20 468.4
1694
37.5 5412 4351 4478 14076 3378 3894 130.2 84.0 81.5 82.9 80.4 85.3 82.7 84.7 82.2 94.04 2325 0.485 20 496.2
1794
40.0 5773 4641 4786 15015 3604 4162 138.9 84.0 81.5 82.9 80.4 85.4 82.9 84.9 82.3 100.12 2480 0.525 20 523.9
1894
42.5 6134 4938 5095 15974 3834 4430 147.6 84.0 81.5 82.9 80.5 85.6 83.0 85.1 82.5 106.20 2640 0.565 20 551.6
1994
45.0 6495 5228 5404 16914 4059 4700 156.2 84.0 81.5 83.0 80.5 85.7 83.2 85.3 82.7 112.28 2795 0.605 20 579.4
2094
47.5 6856 5519 5716 17854 4285 4970 164.9 84.0 81.5 83.0 80.5 85.9 83.3 85.4 82.9 118.36 2945 0.650 20 607.1
2194
50.0 7216 5809 6028 18792 4510 5241 173.6 84.0 81.5 83.0 80.5 86.1 83.5 85.6 83.1 124.44 3120 0.750 20 634.8
2294
53.0 7649 6157 6404 19919 4781 5568 182.2 84.0 81.5 83.0 80.5 86.3 83.7 85.8 83.3 130.52 3255 0.850 20 * 662.6
2394
55.0 7938 6390 6655 20672 4961 5787 190.9 84.1 81.5 83.0 80.5 86.4 83.8 86.0 83.4 136.60 3410 0.950 20 * 690.3
2494
58.0 8371 6739 7034 21799 5232 6117 199.6 84.1 81.5 83.0 80.5 86.6 84.0 86.2 83.6 142.68 3565 1.050 20 * 718.0
2594
60.0 8660 6971
7288
22552 5413
6338
208.2 84.1 81.5 83.0 80.5 86.7 84.1 86.4 83.8 148.76 3730 1.150 20 * 745.8
1. See below to specify complete model number.
For T-intermediate sections(s) and tankless heater(s),
add suffix "(number required) TIH"; for T-intermediate
section(s) with cover plates only, add suffix "(number
required) TIP".
2. Burner input based on maximum of 2,000 feet altitude. For
other altitudes, consult Weil-McLain distributor/agent or
sales office.
3. No. 2 fuel oil — Commercial Standard Spec CS75-56. Heating value
of oil = 140,000 Btu per gallon.
No. 4 or No. 5 oil — Commercial Standard Spec CS75-56. Heating
value of oil = 150,000 Btu per gallon.
4. Gas pressure required at burner gas train inlet for rated burner input;
based on 1,000 Btu per cubic foot natural gas, specific gravity of 0.60.
Refer to burner manual for required pressure.
5. Gross AHRI ratings have been determined under the AHRI provision
governing forced draft boiler-burner units.
6. Flue gas volume at outlet temperature.
7. Net AHRI ratings are based on net installed radiation of sufficient
quantity for the requirements of the building.
Nothing need be added for normal piping and pick-up.
Water ratings are based on a piping and pick-up allowance of 1.15.
Steam ratings are based on the following allowance of 1.288.
An additional allowance should be made for gravity hot water systems
or for unusual piping and pick-up loads.
Consult local Weil-McLain distributor/agent or sales office.
8. Water boilers tested for 80 PSIG, ASME water working pressure.
Steam boilers tested for 15 PSIG, ASME steam working pressure.
*
Models 2294–2594 are supplied with 22-inch adapter.
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