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Seaward Products WATER HEATERS OWNER’S MANUAL FOR ELECTRIC HEAT EXCHANGER WATER HEATERS 20 GALLON • VERTICAL MODELS: S1800, S1850, S1900, S1950...
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SAFETY INSTRUCTIONS WARNING: When using electrical appliances, basic safety precautions to reduce the risk of fire, electric shock, or injury to persons should be followed, including: 1. READ ALL INSTRUCTIONS BEFORE USING THIS WATER HEATER. 2. This water heater must be grounded. Connect only to properly grounded outlet. See “GROUNDING INSTRUCTIONS”...
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Small amounts of electric currents may move to your boat through your shore cord, causing galvanic damage to your water heater. To help prevent possible damage, a galvanic isolator is recommended. Galvanic corrosion is not covered under warranty. NOTICE: This temperature/pressure valve may weep during initial operation. This is normal. The valve will seat itself with use.
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INSTALLATION NOTE: DO NOT INSTALL THE WATER HEATER ON ITS SIDE OR UPSIDE DOWN. 1. Locate water heater at engine level as close to engine as possible. 2. Secure mounting brackets to structure with eight #12 minimum screws or ¼-20 minimum cap screws and nuts.
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• Turn power off at main power panel or remote switch • Remove wiring access cover • Depress red button on high temperature limit switch • Replace cover and turn power on • If temperature limit switch reactivates, contact a Seaward Products authorized service center. •...
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