Raypak Raytherm Hot Water Supply Boiler- 54 HP. Model: W-1826A-DCDRDEA. S/N: 1288108674. Nat'l Bd: 72074. Input: 1,825,600 Btuh. Output: 1,497,000 Btuh. Low pressure, indoor boiler. Natural gas operated. MAWP (water): 160 psi. Minimum relief valve capacity: 14660 lbs/hr. Heating surface area: 143 sq. ft. Bell & Gossett Pump, Model: F59. Dayton Motor, 3/4 hp, 1725 rpm, 115 V, 11 amps, 60 Hz, single phase. Features finned copper tubes that provide high thermal efficiency, cutting fuel costs substantially as standby and radiation losses typical with other boilers and tank-type water heaters are eliminated. Inlets: (1) 1-1/2 in. dia. NPT (male, gas), (1) 2-1/2 in. dia. bevel with hex nut (water). Outlets: (1) 3/4 in. dia. pressure relief pipe, (1) 2-1/2 in. dia. bevel with hex nut (water), (1) 20 in. dia. exhaust vent. Overall dimensions: 10 ft. 5 in. L x 36 in. W x 36 in. H. (ACN109a-88).