Seaward Water Heaters With Rear Heat Exchanger Connection, 20 gal. Stainless

All these heaters feature aluminum hold down brackets, ignition protection and your choice marine galvanized or stainless steel exteriors. Tank material is Alclad® coated aluminum alloy. Available capacities are: 6, 11, 18 and 20 gallons, in horizontal and some vertical models. Depending on the model, heat exchanger ports are located either in the front or rear of the unit.
• Combination electric/heat exchanger or electric only (by special order)
• Heat exchanger ports are 5/8" hose
• Potable water ports are 1/2" female pipe
• Inner tanks made from Alcoa Alclad coated aluminum alloy
• Hold down brackets welded to inner tank
• UL (120 V models) or CE (240 V models) approved
• Temperature/pressure relief valve
• All models shown are 20 amps/120 VAC; 240 VAC models are available