(Hot Water)
Water is heated by the diesel fired burner
system and circulated
through a closed loop of tubing or hoses to the area requiring heat.
In the area to be heated you can install convection type radiators or the most common marine installation is the fan forced radiator system similar to the heating system in your car.
The fans on each fan radiator unit can be controlled with a thermostat to give you zone heating. They may also be controlled by a 2 speed switch giving you OFF-HIGH-LOW selections.
The hydronic heaters can also be installed with special heat exchanger units to heat domestic hot water for showers or the galley.
The hydronic heater installation can be integrated into the cooling system, using a water to water heat exchanger, of most fresh water cooled engines to automatically utilize the waste heat from the engine. More information on Water to Water heat exchangers
To see more information on specific Espar Hydronic models, just click on the model number.
D4W
13,700 btu's - Ideal for power boats up to 30 feet and sail boats up
to 32 feet
(for Northwest based boats -
for other areas
see the sizing guide)
D5W 17,000
btu's - Ideal for power boats up to 37 feet and sail boats up to 40 feet
(for
Northwest based boats -
for other areas
see the sizing guide)
D10W 32,400
btu's - Ideal for power boats up to 45 feet and sail boats up to 55 feet
(for
Northwest based boats -
for other areas
see the sizing guide)
D16W 55,000
btu's - Ideal for power boats up to 60 feet and sail boats up to 65 feet
(for
Northwest based boats -
for other areas
see the sizing guide)
D30W 103,000
btu's - Ideal for power boats up to 75 feet and
sail boats up to 80 feet
(for
Northwest based boats -
for other areas
see the sizing guide)
D35W 120,000
btu's - Ideal for power boats up to 80 feet and
sail boats up to 90 feet
(for
Northwest based boats -
for other areas
see the sizing guide)
Cabin Heat Exchangers (Fan Forced Air)
