Commercial Boilers - Gas Boilers Series TCII™ Boiler

The Series TCII™ cast iron boiler is a steam or hot water commercial boiler for gas, oil or combination gas/oil-fired applications designed for higher efficiencies. The boiler is available in 15 sizes with inputs of 1,143 MBH to 5,553 MBH and thermal efficiencies of up to 85.8%. The superior design of the boiler features flexible graphite port connectors and individual draw rods for easy installation and a tight secure fit between sections. In applications where domestic hot water is required, tankless coils can be added.
Product Details:
Type: Commercial
Construction: Cast Iron
Fuel: Oil, Gas, Gas/Oil-Fired
Input: 1,106 to 5,553 MBH
Output: 931 to 4,622 MBH
Venting: Forced Draft
Trim: Water or steam
Combustion: Power Burner
Series TCII™![]() |
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Boiler Model Number | Oil Input² | Gas Input³ MBH | Gross Output MBH | Net Ratings¹ | Oil | Gas | |||||||||||
GPH | MBH | Steam, sqft | Water², MBH | Steam³, MBH | Combustion Efficiency5, % | Thermal Efficiency5, % | Combustion Efficiency5, % | Thermal Efficiency5, % | |||||||||
TCII-04 TCII-05 TCII-06 |
7.9 10.2 12.2 |
1,106 1,428 1,708 |
1,143 1,458 1,773 |
931 1,194 1,458 |
2,908 3,733 4,625 |
810 1,038 1,268 |
698 896 1,110 |
86.2 86.2 86.1 |
83.9 84.4 84.8 |
83.6 83.6 83.5 |
81.4 81.9 82.2 |
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TCII-07 TCII-08 TCII-09 |
14.4 16.6 18.8 |
2,016 2,324 2,632 |
2,088 2,403 2,718 |
1,722 1,985 2,249 |
5,542 6,421 7,275 |
1,497 1,726 1,956 |
1,330 1,541 1,745 |
86.1 86.1 86.1 |
85.0 85.2 85.3 |
83.5 83.5 83.5 |
82.5 82.6 82.7 |
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TCII-10 TCII-11 TCII-12 |
21.0 23.0 25.5 |
2,940 3,220 3,570 |
3,033 3,348 3,663 |
2,513 2,776 3,040 |
8,129 8,979 9,833 |
2,185 2,414 2,643 |
1,951 2,155 2,360 |
86.1 86.0 86.0 |
85.4 85.5 85.6 |
83.5 83.5 83.5 |
82.8 82.9 83.0 |
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TCII-13 TCII-14 TCII-15 |
27.5 29.5 32.0 |
3,850 4,130 4,480 |
3,978 4,293 4,608 |
3,304 3,567 3,851 |
10,688 11,538 12,392 |
2,873 3,102 3,331 |
2,565 2,769 2,974 |
86.0 86.0 86.0 |
85.6 85.7 85.7 |
83.5 83.5 83.4 |
83.0 83.1 83.1 |
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TCII-16 TCII-17 TCII-18 |
34.0 36.5 38.5 |
4,760 5,110 5,390 |
4,923 5,238 5,553 |
4,095 4,358 4,622 |
13,246 14,100 14,954 |
3,561 3,790 4,019 |
3,179 3,384 3,589 |
86.0 86.0 86.0 |
85.7 85.8 85.8 |
83.4 83.4 83.4 |
83.2 83.2 83.2 |
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Boiler H.P. | Water Content, gal | Furnace Volume, cuft | Water Working Weight, lbs. | Heating Surface, sqft | |
---|---|---|---|---|---|
Water | Steam | ||||
28 36 44 |
123.4 150.3 177.2 |
103.8 125.8 147.8 |
12.04 16.14 20.24 |
4,215 5,038 5,861 |
81.2 105.3 129.4 |
51 59 67 |
204.1 231.0 257.9 |
169.8 191.8 213.8 |
24.34 28.44 32.54 |
6,684 7,507 8,331 |
153.5 177.6 201.7 |
75 83 91 |
284.8 311.7 338.6 |
235.8 257.8 279.8 |
36.64 40.74 44.84 |
9,169 9,992 10,815 |
225.8 249.9 274.0 |
99 107 114 |
365.5 392.4 419.3 |
301.8 323.8 345.8 |
48.94 53.04 57.14 |
11,649 12,467 13,511 |
289.1 322.2 346.3 |
122 130 138 |
446.2 473.1 500.0 |
367.8 389.8 411.8 |
61.24 65.34 69.44 |
14,375 15,239 16,103 |
370.4 394.5 418.6 |
- Net Water Ratings are based on allowance of 1.15. Net Ratings for steam boilers are based on piping and pick-up factor as follows: 4 and 5 section = 1.333, 6 and 7 section = 1.305, 8 section and larger = 1.288.
- Light oil having a heat content of 140,000 BTU/Gal.
- Gas having a heat content of 1,000 BTU/Cu. Ft., 0.60 specific gravity.
- Consult factory before selecting a boiler for installation having unusual piping and pickup requirements, such as intermittent system operation, extensive piping systems, etc.
- Combustion and thermal efficiency determined in accordance with BTS 2000 Testing Standard for Heating Boilers.

Dimensions & Connection Sizes
Boiler Model Number | Overall Length – “A”¹ (inch) | Optional Packaged Base Dimension “K” (inch) | Firebox Length “B”(inch) | Boiler Length “C” (inch) | Riser Tapping Locations | Dia. Vent Conn. “G” (inch) | Height Vent Conn. “H” (inch) | Base Height “J” (inch) | ||||
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Becket | Carlin | Power Flame | “D” (inch) | “E” (inch) | “F” (inch) | |||||||
TCII-04 | 64-1/4 | 62-1/4 | 71-3/4 | 91-1/4 | 23-5/16 | 33 | 12.5 | — | — | 10 | 57.625 | 6 |
TCII-05 | 72-1/4 | 70-1/4 | 83-1/4 | 104-1/4 | 31-5/16 | 41 | 20.5 | — | — | 10 | 57.625 | 6 |
TCII-06 | 80-1/4 | 80-1/4 | 91-1/4 | 112-1/4 | 39-5/16 | 49 | 12.5 | 16 | — | 10 | 57.625 | 6 |
TCII-07 | 88-3/4 | 88-1/4 | 99-1/4 | 120-1/2 | 47-5/16 | 57 | 12.5 | 24 | — | 12 | 56.625 | 6 |
TCII-08 | 96-3/4 | 96-1/4 | 107-1/4 | 128-1/2 | 55-5/16 | 65 | 12.5 | 32 | — | 12 | 56.625 | 6 |
TCII-09 | 104-3/4 | 108-3/4 | 115-1/4 | 136-1/2 | 63-5/16 | 73 | 12.5 | 40 | — | 14 | 55.625 | 6 |
TCII-10 | 116-1/2 | 116-3/4 | 128-1/4 | 144-3/4 | 71-5/16 | 81 | 20.5 | 40 | — | 14 | 55.625 | 6 |
TCII-11 | 124-1/2 | 125-1/4 | 137-1/4 | 157-3/4 | 79-5/16 | 89 | 20.5 | 24 | 24 | 14 | 55.625 | 6 |
TCII-12 | 132-1/2 | 133-1/4 | 145-1/4 | 166-1/4 | 87-5/16 | 97 | 20.5 | 24 | 32 | 14 | 55.625 | 6 |
TCII-13 | N/A | 141-1/4 | 153-1/4 | 173-3/4 | 95-5/16 | 105 | 20.5 | 32 | 32 | 14 | 55.625 | 6 |
TCII-14 | N/A | 149-1/4 | 161-1/4 | 181-3/4 | 103-5/16 | 113 | 20.5 | 32 | 40 | 16 | 54.625 | 6 |
TCII-15 | N/A | N/A | 169-1/4 | 189-7/8 | 111-5/16 | 121 | 20.5 | 40 | 40 | 16 | 54.625 | 8 |
TCII-16 | N/A | N/A | 177-1/4 | 198-1/4 | 119-5/16 | 129 | 20.5 | 48 | 40 | 16 | 54.625 | 8 |
TCII-17 | N/A | N/A | 191-1/4 | 211-1/4 | 127-5/16 | 137 | 20.5 | 48 | 48 | 18 | 54.625 | 8 |
TCII-18 | N/A | N/A | 199-1/4 | 219-1/4 | 135-5/16 | 145 | 20.5 | 56 | 48 | 18 | 54.625 | 8 |