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MARINE DEISEL FURNACE
The heating system is a Hydronic system which uses aWebasto Furnace
which is then pumped throughout the Que Sara to small fan/coil units in various rooms and fan
coil units connected by hose to small flush vents ( such as bathrooms etc.)
There is a digital thermostat in the main salon and Master suite. The other two staterooms each
have a rotary style thermostat.
The furnace can be turned on by simply lifting the pilot house switch to the up position and a
green light will indicate it is on, It is located below and to the right of the computer keyboard
and mouse and above the "NEVER TO BE USED "trolling valves.
Webasto Furnace Switch
The Pilothouse fan coil unit is located under the bridge and supplies heated air to the window
defrosters which can also be operated as just fans using the 3 way manual switch above the Furnace
switch
The Furnace itself is located in the engine room on the port side behind and beyond the port engine.
It exhaust out the port side of the aft portion of the vessel. Be sure no ropes fenders or obstacles are
near the exhaust when operating the furnace as it is very hot.
The system works as follows. When the furnace switch is turned on the furnace fires up and heats a
reservoir of coolant to a prescribed temp. It thereafter turns of and on as required to maintain that
temp. When there is a call for heat from any of the thermostats or pilothouse manual switch, a
circulating pump the heated coolant through the boat in a continuous loop. Each fan coil unit turns on
when a thermostat calls for heat and air is blown over the (radiator) coils into the room , supplying
heated air until the thermostat is satisfied. When the system is switched off the internal furnace fan
will continue to run until the unit cools down.
July 21, 2012
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to heat coolant
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