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Webasto AT40 Premium Marine/Boat Heater Kit
The AT40 is the mid-sized air heater offered by Webasto. The unit will heat up to a 34-foot sailboat and 26-foot powerboat. The AT40 utilizes a 90mm and 60mm hot air duct system, a 24mm exhaust system, and a 3/16" fuel system. This diesel-fired heater is rated to 12,000 BTU and is available in 12 or 24 volt.
The Webasto AirTop (AT series) heaters blow hot air through installed duct to various spaces in the boat. The unit is controlled by a central thermostat that shuts the unit down when the boat's interior has reached the desired temperature. Benefits of an air heater are simple installation and operation as well as quick heat .This simple installation allows the heater to blow hot air into the cabin just after startup without a warm-up period.
When choosing a system to heat your boat, installation requirements should be taken into account. A clean, dry location should be chosen for the mounting of the heater. Once this spot is chosen it should be checked against the parameters of the heater's system. Exhaust run and placement should be taken into consideration when choosing a location for the unit. The AT40 uses 24 mm exhaust flex tube that must vent over the side or aft transom of the boat. Location for the thru-hull should be as high (min 36 in.) and far aft as possible to prevent water intrusion into the exhaust system. The AT40 can have a maximum of 10 ft. of exhaust installed with a maximum of 270° of bends. The unit should not have more than 30 ft. of duct installed and should have no sharp turns within 2 ft. of the unit itself. The placement of the heater should conform to these specifications before the installation process begins.
Along with heater placement, placement of the duct for the heater is also important. The AT40 uses 90mm duct that must be installed in such a manner that it cannot be crushed or knocked loose during cruising or boat use.
Once heater placement has been chosen, heat outlet locations should be chosen. All outlets should be located low in the space because heat rises. The main salon should have one 90mm open-only outlet installed and this should be the first outlet in the line. Any other spaces can have an on/off 60mm outlet installed.
If you have any further questions on installation or operation, please contact NavStore (Great Lakes Marine Specialties) for more information.
For further information follow this link.
Additional components may be required and/or desired for your installation. Please contact us for a customer kit quote.
***This kit includes FREE ground shipping within the Lower 48 States of the U.S. For delivery to destinations other than the Lower 48 States, or for expedited shipping, we will contact you via email with the additional shipping charges after you place your online order. Only upon your approval of these quoted shipping charges will we bill your credit card and ship your order.
For heaters being shipped out of the U.S., payment will be required via wire transfer. Place your order online, and we will contact you with our wire transfer information, as well as your shipping quote.
Webasto AT2000ST 7,000 BTU Premium Forced Air Marine Heater Kit w/Surewire Kit Description (Webasto_AT2000-06.pdf, 153 Kb) [Download]