Outline for installation
The simple boat heater
At this cold time of the year we consider the advantage of heating in the boat, whether it is on shore or still afloat. Here we show the suitable types and the installation of the simplest boat heater, the pot-stove, which does not require electricity.
Central heating with water in radiators through a heat-exchanger. The pot-stove is simple, does not use electricity and is suitable for boats.
In the pot-stove diesel oil comes from the tank to the regulator D. It gives a film of oil, which burns at the bottom of the burner. The stove can tolerate rolling but not a constant list, where the oil runs down on one side.
The stove should be situated near to the coldest surface in the boat, e.g. near the companionway, just as radiators are beneath the windows at home. The smallest stoves are only approx. 17 cm in diameter and 45 cm high.
The safety distance from the stove and chimney to combustible wood, fibreglass, etc., is min. 10 cm. over the surroundings with stainless steel plating, E, which reflects the heat. If the distance is close to 10 cm, insulate with “air”, F, and non combustible material, G.
The chimney must be placed free, H. Downdraught from a sail, I, or from a cabin, J, will interfere with and extinguish the stove. The chimney must also be placed so that it does not interfere with sheets and rope work. While sailing the top can be removed and a cover fitted.
First drill a 10 mm hole through the roof or deck to check the position of the chimney inside and outside. The chimney is approx. 7 cm in diameter, but the hole should be approx. 12 cm. It is easiest to cut with an electric or ordinary compass saw.
The stove is fastened at the base on a stainless steel plate with round-headed screws, K. On commercial boats a spillage tray is required, which collects any drips and at the same time holds the stove in place. Elbow pipes can be used to get things to fit into place.
The stainless steel tank is positioned at a suitable distance form the stove, at least 20 cm above the oil level mark on the regulator and maximum 2 metres above. A safety cut-off, M, is placed before the regulator, N is the overflow for surplus oil. O is the air valve.
The normal pot-stoves are approx. 17-35 cm in diameter. Stoves with hotplates, P, can be supplied at additional cost. Most stoves can be supplied with copper spirals for hot water radiators. The fuel for all the stoves is diesel oil (paraffin by special order).
