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Boat central heating - The air heating system

Heater Location

The heater will be mounted in a cockpit locker, lazerette, or engine area. The heater’s miniature size makes it easy to tuck away out of sight.

Fuel System

The fuel metering pump draws fuel from the main boat tank via a purpose designed standpipe. All fuel lines and clips are included in the kit. The Airtronic uses minute amounts of fuel: e.g. D4 Airtronic 0.38 litres/hr on high setting.

Exhaust

The products of combustion are passed to atmosphere through a flexible twin wall stainless tubing, pre lagged and over sleeved and then through a specially designed hull fitting.

Electrics and Switch

The heater requires a 12v or 24v battery supply: usually taken through a suitable fuse from the main auxiliary batteries or suitable auxiliary point. Current draw is minimal (see specification data). All harnesses are pre cut, sleeved, and plugs connected for easy installation. Either a simple On/Off switch with a temperature control dial or digital timer regulate the temperature in the boat.


 

The Duct System

Flexible ducting carries the hot air to outlets in cabin fascias, such as seat or locker fronts. The ducting has been carefully chosen for its layers of integrated insulation and high flexibility without compromising air flow.

 

 

 

How the Airtronic works

A single cabin control switch (1), or a 7 day timer, will start the heater operation. The heater’s motor will operate the fan (4) drawing in air for the combustion chamber (2) to mix with diesel. This is delivered by the remote factory set fuel metering pump (3). This draws the fuel for the heater from the main boat’s tank (or a separate tank in the case of a petrol engined craft).

A glow pin (5) ignites the fuel air mist and combustion is established. This heats the heat exchanger (6), and the products of the combustion (7) are passed out of the heater and on through flexible stainless steel tube to the exhaust outlet; usually located on the transom, or boat’s hull. The heater is not connected in any way to the engine or other boat systems.

The fresh air fan (8) draws in cold air for heating; quite separate from the combustion process. This air passes over the sealed, finned heat exchanger (6) and under pressure, passes through the duct work. This delivers the warm air to the cabins which is automatically controlled to give your desired temperature.

All the components that go to make a full installation are purpose designed to work together reliably and withstand the tough marine environment.

 

AIRTRONIC D2
AIRTRONIC D4
AIRTRONIC D5 D8LC
Fuel
EN590 Diesel or Paraffin
EN590 Diesel or Paraffin
EN590 Diesel or Paraffin EN590 Diesel or Paraffin
Voltage
Volts 12 or 24
12 or 24
12 or 24
12 or 24
Heat Settings
  Power High
Medium
Low Power
High Medium Low Power
High Medium Low High Low
Heat flow
 watts 2,200 1,800 1,200 850 4,000 3,000 2,000 1,000 5,500 4,800 2,700 1,200 8,000 3,500
Air throughput
m3/h 90 75 52 36 150 130 95 55 233 233 137 137 258 250
Electrical power consumption
watts 34 23 12 8 40 24 13 7 80 80 40  40 115 115
Fuel consumption
l/h 0.28 0.23 0.15 0.10 0.51 0.38 0.25 0.13 0.7 0.58 0.34 0.15  1.00 0.40
Weight
kg   2.7 4.5 8 20
Technical Features • Electronic speed control with gentle adjustment, low noise and low power consumption
• Fully integrated microprocessor control
• Continuous monitoring
• Fan function possible for summer operation
• Diagnostic system

 

Heater for Sail Boat:
Boat length:
Heater for Motor Boat:  

 

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