Marine Plumbing & Ventilation - Hot Water Heaters

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

Ships Direct From Manufacturer 

Seaward 20 Gallon Hot Water Heater with Front Heat Exchanger - Stainless Steel - 240V

Whale Electric Water Heaters includes models with the latest technology. All heaters are manufactured from only the highest quality materials and designed to withstand harsh marine conditions specifically.

The Marine Galvanized Steel Cover offers corrosion resistance at an affordable price. This material weighs more than the other case options but is made from a solid and robust material.

Features & Benefits:

• Multiple versions to suit your installation
• Robust Manufacturing
• Safety controls
• Magnesium anodes are available separately
• Sturdy, robust exteriors
• Ignition protected

Raritan 12-Gallon Water Heater w/o Heat Exchanger - 240V [171202]

Ships Direct From Manufacturer 

12-Gallon Water Heater without Heat Exchanger - 240V

A marine water heater is simply a small, insulated tank downstream of the pump. You must have a pressurized water system to operate a water heater. The pump draws water from the storage tank(s) and fills the water heater tank. Inside the water heater is an electrical heating element and usually a coiled tube called a heat exchanger. When AC power is available, the electrical element (controlled by a thermostat) heats the water. Away from the dock, the hot engine coolant is routed through the coiled tube to heat the water in the tank when the engine is running.

Water heaters have four threaded ports. The tank inlet connects via a tee connector to the outlet hose from the pump. A check valve is required in this line or in the heater to prevent hot water from migrating back toward the pump. The outlet connection supplies heated water to the hot side of all faucets, also using tee connectors. The other two ports are for the heat exchanger connection, which varies depending on engine installation. Use only metal fittings to plumb a water heater, never plastic. If a pressure-release valve isn’t integral, the heater will have a fifth port for this essential component.

Raritan’s 1700 Series Water Heaters are built for the long haul. A glass-lined steel tank and a rust-proof jacket keep the Raritan water heater looking great and lasting for many years. Research has shown that glass-lined steel tanks are more durable than tanks made from just stainless steel. To increase longevity and fluctuations in water quality, Raritan includes a sacrificial magnesium anode that ensures a long tank life.

Features:

• High-density non-CFC foam insulation helps the tank to maintain the hot water longer, a plus if you don’t want to run the generator for hot water
• The recovery rate is 13 gallons per hour
• Hot water at 160 degrees F when mixed with cold water can greatly extend the usable capacity of the tank
• Because the heater includes an adjustable thermostat it can be set as high as 160 degrees F 
• All plumbing connections on one side (it retrofits without difficulty to most on-board pressure systems)
• Hot and cold-water fittings are standard 3/4 in. male NPT and the heat exchanger’s 3/4 in. female NPT

Specifications:

• Tank Size: 12-gallon
• Volts: 240

Benefits: 

• Simple installation – retrofits to most on-board pressure systems
• Proven long-life design
• Withstands the rigors of the marine environment
• The glass-lined steel tank is more durable than stainless steel
• The attractive polymer jacket resists corrosion from dampness
• Ignition-protected, adjustable thermostat
• Round tanks are designed to withstand more pressure than square tanks
• Glass-lined steel tank for long life and high efficiency
• Environmentally friendly CFC-free foam insulation
• Replaceable magnesium anode to protect the tank and neutralize acids in the water
• The tank is covered by a five-year Limited Warranty
• Each unit is assembled by hand, individually tested, and backed by Raritan’s two-year Limited Warranty and legendary technical support team

Owner's Manual (pdf)
Brochure (pdf)

Raritan 20-Gallon Water Heater w/Heat Exchanger - 240V [172012]

Ships Direct From Manufacturer 

20-Gallon Water Heater with Heat Exchanger - 240V

A marine water heater is simply a small, insulated tank downstream of the pump. You must have a pressurized water system to operate a water heater. The pump draws water from the storage tank(s) and fills the water heater tank. Inside the water heater is an electrical heating element and usually a coiled tube called a heat exchanger. When AC power is available, the electrical element (controlled by a thermostat) heats the water. Away from the dock, the hot engine coolant is routed through the coiled tube to heat the water in the tank when the engine is running.

Water heaters have four threaded ports. The tank inlet connects via a tee connector to the outlet hose from the pump. A check valve is required in this line or in the heater to prevent hot water from migrating back toward the pump. The outlet connection supplies heated water to the hot side of all faucets, also using tee connectors. The other two ports are for the heat exchanger connection, which varies depending on engine installation. Use only metal fittings to plumb a water heater, never plastic. If a pressure-release valve isn’t integral, the heater will have a fifth port for this essential component.

Raritan’s 1700 Series Water Heaters are built for the long haul. A glass-lined steel tank and a rust-proof jacket keep the Raritan water heater looking great and lasting for many years. Research has shown that glass-lined steel tanks are more durable than tanks made from just stainless steel. To increase longevity and fluctuations in water quality, Raritan includes a sacrificial magnesium anode that ensures a long tank life.

Features:

• A heat exchanger (the heat exchanger allows the user to heat water when underway by circulating engine cooling fluid through the almost 7-foot-long coil within the tank)
• The recovery rate can be as high as 18 gallons per hour
• High-density non-CFC foam insulation helps the tank to maintain the hot water longer, a plus if you don’t want to run the generator for hot water
• Hot water at 160 degrees F when mixed with cold water can greatly extend the usable capacity of the tank
• Because the heater includes an adjustable thermostat it can be set as high as 160 degrees F 
• All plumbing connections on one side (it retrofits without difficulty to most onboard pressure systems)
• Hot and cold-water fittings are standard 3/4 in. male NPT and the heat exchanger’s 3/4 in. female NPT

Specifications:

• Tank Size: 20-gallon
• Volts: 240

Benefits: 

• Simple installation – retrofits to most on-board pressure systems
• Proven long-life design
• Withstands the rigors of the marine environment
• The glass-lined steel tank is more durable than stainless steel
• The attractive polymer jacket resists corrosion from dampness
• Ignition-protected, adjustable thermostat
• Round tanks are designed to withstand more pressure than square tanks
• Glass-lined steel tank for long life and high efficiency
• Environmentally friendly CFC-free foam insulation
• Replaceable magnesium anode to protect the tank and neutralize acids in the water
• The tank is covered by a five-year Limited Warranty
• Each unit is assembled by hand, individually tested, and backed by Raritan’s two-year Limited Warranty and legendary technical support team

Owner's Manual (pdf)
Brochure (pdf)

Raritan 20-Gallon Hot Water Heater w/Heat Exchanger - 4500w/240v [17201203]

Ships Direct From Manufacturer 

20-Gallon Hot Water Heater with Heat Exchanger - 4500w/240v

The "1700 Series" water heater provides hot water for galley and shower. Dense foam insulation provides better and longer heat retention than traditional fiberglass. The tank itself is protected by a 75 PSI T& P (temperature and pressure) relief valve. The cylindrical design of the tank enables it to withstand more pressure than a cube shaped tank.

Heat exchanger models can be connected to the engine cooling system. This provides the added convenience of hot water when underway or generator power is not available. The innovative heat exchanger is over seven feet in length and is evenly coiled throughout the interior of the tank, providing hot water rapidly and efficiently.

Raritan's water heaters use an ignition protected thermostat. Although it is factory set to 120°F, it is adjustable from 110° to 160°F and has a safety shut down limit of 190°F. All models and sizes have the plumbing connections on the same side to simplify installation. Hot and cold water connections are 3/4" male NPT (National Pipe Thread). Heat exchanger connections are 3/4" female NPT.

Benefits:

• Simple installation - retrofits to most on-board pressure systems
• Proven long-life design
• Withstands the rigors of the marine environment
• Glass-lined steel tank is more durable than stainless steel
• Attractive polymer jacket resists corrosion from dampness
• Ignition-protected, adjustable thermostat
• Round tanks are designed to withstand more pressure than square tanks
• Glass-lined steel tank for long life and high efficiency
• Environmentally friendly CFC-free foam insulation
• Replaceable magnesium anode to protect tank and neutralize acids in the water
• The tank is covered by a five-year Limited Warranty
• Each unit is assembled by hand, individually tested and backed by Raritan's two-year Limited Warranty and legendary technical support team

Specifications:

• Gallons: 20
• Heat Exchanger: Yes
• Volts: 240v

Whale Seaward 6 Gallon Hot Water Heater - Stainless Steel - 240V - 1500W [S750E]

Seaward 6 Gallon Hot Water Heater - Stainless Steel - 240V - 1500W

Whale Electric Water Heaters includes model with the very latest technology. All heaters are manufactured from the highest quality materials and designed to specifically withstand harsh marine conditions.

Water Heaters with a Stainless Steel cover offer high levels of corrosion resistance with a modern stainless steel finish. These heaters are a bit lighter than those wearing the galvanized outer cover and heavier than the epoxy coated versions.

Features and Benefits:

• Horizontal Mounting only  
• Robust Manufacturing
• Hold down brackets welded to inner tank
• Double wall heat exchangers  
• Safety controls  
• Integrated pressure relief valve
• Temperature and pressure drain tube included  
• Magnesium anodes available separately
• Recommended to prevent corrosion and ensure a longer Water Heater life  
• Sturdy, robust exteriors
• Ignition protected

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Specifications:

• Gallons: 6
• Volts: 240v
• Box Dimensions: 14"H x 14"W x 22"L WT: 23.6 lbs
• UPC: 766478948281

Brochure (pdf)

Whale Seaward 11 Gallon Hot Water Heater w/Front Heat Exchanger - Stainless Steel - 240V - 1500W [F1250]

Seaward 11 Gallon Hot Water Heater with Front Heat Exchanger - Stainless Steel - 240V - 1500W

Whale Electric Water Heaters includes models with the very latest  technology. All heaters are manufactured from only highest quality materials and designed to specifically withstand harsh marine conditions.

Water Heaters with a Stainless Steel cover offer high levels of corrosion resistance with a modern stainless steel finish. These heaters are a bit lighter than those wearing the galvanized outer cover and heavier than the epoxy coated versions.

Features and Benefits

• Horizontal Mounting only
• Robust Manufacturing
• Hold down brackets welded to inner tank
• Double wall heat exchangers
• Safety controls
• Integrated pressure relief valve
• Temperature and pressure drain tube included
• Magnesium anodes available separately
• Recommended to prevent corrosion and ensure a longer Water Heater life
• Sturdy, robust exteriors
• Ignition protected

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Specifications:

• Gallons: 11
• Heat Exchanger: Yes
• Volts: 240v
• Box Dimensions: 17"H x 17"W x 27"L WT: 32.3 lbs
• UPC: 766478948342

Brochure (pdf)

Whale Seaward 3 Gallon Hot Water Heater - White Epoxy - 240V - 1500W [S350EW]

Seaward 3 Gallon Hot Water Heater - White Epoxy - 240V - 1500W

Whale Electric Water Heaters includes models with the very latest  technology. All heaters are manufactured from only highest quality materials and designed to specifically withstand harsh marine conditions

Whale's 11 ltr (3 US Gal) heaters are the lightest water heater at 14 lbs, saving weight on board. The white epoxy coating blends in well with existing equipment and the coated aluminium material offers corrosion resistance and weight saving.

Features and Benefits 

• Electric Only for ease of installation and use 
• Robust Manufacturing 
• Hold down brackets welded to inner tank
• Double wall heat exchangers
• Safety controls
• Integrated pressure relief valve
• Temperature and pressure drain tube included
• Magnesium anodes available separately
• Recommended to prevent corrosion and ensure a longer Water Heater life
• Sturdy, robust epoxy coated exterior
• Ignition protected Available in The Americas only

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Specifications:

• Gallons: 3
• Volts: 240v
• Box Dimensions: 14"H x 17"W x 17"L WT: 14.2 lbs
• UPC: 766478948137

Brochure (pdf)

Whale Seaward 11 Gallon Hot Water Heater - White Epoxy - 240V - 4500W [S1150EW-4500]

Seaward 11 Gallon Hot Water Heater - White Epoxy - 240V - 4500W

Whale Electric Water Heaters includes models with the very latest  technology. All heaters are manufactured from only highest quality materials and designed to specifically withstand harsh marine conditions.

The White Epoxy Coated Aluminum cases are well-suited to installation in many of today’s engine rooms. Their white appearance blends in well with existing equipment and the coated aluminum material offers corrosion resistance.

Features and Benefits

• Horizontal Mounting only
• Robust Manufacturing
• Hold down brackets welded to inner tank
• Safety controls
• Integrated pressure relief valve
• Temperature and pressure drain tube included
• Magnesium anodes available separately
• Recommended to prevent corrosion and ensure a longer Water Heater life
• Sturdy, robust exteriors
• Ignition protected

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Specifications:

• Gallons: 11
• Heat Exchanger: No
• Volts: 240v
• Box Dimensions: 17"H x 17"W x 26"L WT: 23.5 lbs
• UPC: 766478948380