Whale Seaward 20 Gallon Hot Water Heater w/Front Heat Exchanger - Stainless Steel - 240V - S1950

Whale Grey Waste Tanks with Intelligent Control – Model GK1512

The Whale Grey Waste Tank with Intelligent Control (Model GK1512) is a premium marine and RV waste management solution designed to make handling grey water simple, hygienic, and efficient. Engineered for boats, yachts, and recreational vehicles, this grey waste tank system integrates intelligent control technology to help you monitor and manage wastewater levels with confidence.

Built with rugged, corrosion-resistant materials, the Whale GK1512 tank delivers reliable performance in harsh environments—resisting odors, leaks, and degradation from regular use. Its smart control system provides accurate tank level feedback and integrates seamlessly with onboard monitoring systems, giving you real-time insight into waste levels for better sanitation management.

Whether you’re cruising, camping, or living aboard, the Whale Grey Waste Tank with Intelligent Control upgrades your sanitation system with advanced monitoring, robust construction, and easy installation.

Key Features:

• Dual Heating Sources: * Electric: Uses a powerful 240V heating element for use when connected to shore power or a generator.

  • Heat Exchanger: Features a front-mounted copper tube exchanger that circulates engine coolant to provide "free" hot water while the engine is running.

• Superior Insulation: Wrapped in high-efficiency foam that retains heat for extended periods, reducing the cycling of the heating element.

• Safety First: Includes an integrated Pressure and Temperature (P&T) Relief Valve and a high-temperature limit switch.

• Magnesium Anode: Equipped with a replaceable anode rod to protect the internal tank from galvanic corrosion, significantly extending the life of the unit.

• Sturdy Mounting: Features robust, integrated mounting brackets welded directly to the inner tank for a secure installation that handles heavy seas.

Applications

• Marine grey waste systems (sinks, showers, wet areas)

• RV and camper sanitation waste handling

• Sanitation upgrades and new installations

• Smart monitoring for onboard wastewater management

Technical Specifications:

Why Choose the 20-Gallon Stainless Model?

The 20-gallon capacity is the "sweet spot" for yachts with multiple heads or crews of 4–6 people, ensuring there is enough hot water for consecutive showers. The stainless steel jacket is the preferred choice over galvanized or painted steel because it won't rust or peel in the humid, salty atmosphere of an engine room.

Installation Pro-Tip:

When plumbing the heat exchanger to your engine, ensure you install shut-off valves on both the supply and return lines. This allows you to isolate the water heater for maintenance or winterization without having to drain your engine's entire cooling system. Additionally, remember to check your magnesium anode annually; replacing it every 1–2 years is the cheapest way to prevent the inner tank from leaking.