I Product Description
The FCM070, FCM090 and FCM120 are aluminum gas fired condensing boilers designed for use in forced hot water heating systems requiring supply water temperatures of 180°F or less. These boilers are designed for installation on a wall, however they may be floor mounted using an optional pedestal kit available from U.S. Boiler Company, Inc. This boiler may be vented vertically or horizontally with combustion air supplied from outdoors. This boiler is not designed for use in gravity hot water systems or systems containing significant amounts of dissolved oxygen.
II Specifications
Figure 2.1: General Configuration
TABLE 2.2: SPECIFICATIONS
| NO. OF | MAXIMUM | MINIMUM | D.O.E. | IBR NET |
| WATER | APPROX. | |
| HEATING |
| NET | ||||||
MODEL* | INPUT | INPUT | RATING | AFUE (%) | VOLUME | ||||
SECTIONS | CAPACITY | WEIGHT | |||||||
| (BTU/hr) | (BTU/hr) | (BTU/hr) |
| (Gal.) | ||||
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| (BTU/hr) |
| (lb) | |||||
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FCM070 | mono block | 70,000 | 30,000 | 63,000 | 55,000 | 95.4 | 0.41 | 102 | |
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FCM090 | mono block | 90,000 | 30,000 | 80,000 | 70,000 | 94.5 | 0.41 | 102 | |
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FCM120 | mono block | 120,000 | 40,000 | 107,000 | 93,000 | 95.2 | 0.62 | 110 | |
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* Add suffix “N” for natural gas and “P” for propane. Ratings are the same for both fuels.
TABLE 2.3: MAXIMUM VENT LENGTHS
Using 60/100mm Concentric Vent System Supplied with the Boiler | 25 in. |
Using Optional 60/100mm Concentric Vent Components......................................................................................: | 32 ft |
FCM070 | |
FCM090 | 32 ft |
FCM120 | 18 ft |
Using Approved 3” | 55 ft |
See Vent Section for additional venting options and requirements
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