And if you've laid your boat up for the winter season, stripping out cushions and gear, it will make installing a heater a great deal simpler.
Choosing a heater depends on the dimension of your boat and your spending budget. It's better to have a little heater working hard than a large one ticking more than that can coke up, like an idle diesel engine.
Exactly where to install?
If you've received the abilities, tools, area and time and you want to fit a heater your self, the prime consideration is the ducting route. Where do you want heat? Is there sufficient space to work? If you can, cut ducting holes through wood panels instead than the GRP frames. Not only is drilling easier but, more importantly, you won't compromise the internal structure of the boat.
The ducting route defines exactly where the heater can be fitted. Some heaters specifically require to be mounted horizontally or vertically. Fitting your heater near to the gas tank and batteries will make life simpler.
If you can't use the mounting board provided, devise another to make certain the heater's place allows ducting operates with out sharp angles... each 90° bend loses 5% of the warmth, which is why the secret of a good heating system lies in the ducting.
Lastly, think about the exhaust exit. If you stow fenders on the pushpit, siting the exhaust next to them will soften them in seconds. And remember, the exhaust needs a swan neck to prevent water getting into the heater.
Boat heater set up
It is good practice to operate the ducting along the higher edge of lockers to prevent it from becoming crushed by heavy items while sailing. Boat producers anticipate some retro-fitted heating, as holes in the tightest places are frequently pre-cut at the factory. When putting the vents, usually drill via from the visible side to stop harmful the exterior. Thermostat and manage wiring should be threaded via the new holes before the ducting. The dial manage can be fitted anywhere the wiring will permit, but envision becoming able to switch the heating on and off without having to leave the comfort of a heat bunk. Cover the ducting with a plastic bag to quit its rough edges tearing the Thermoduct insulation, then insert two sleeves of insulation more than the ducting.
The fuel system
Heaters use solenoid fuel pumps so a lift pipe is required, fitted to the tank. As the pump can't lift beyond 1m (3ft 3in), line up the lift pipe and tank, rating and snap the copper pipe before gently bending it to attach to the pump, permitting two spirals in the pipe to compensate for vibration. A second pipe, running from heater to pump, needs the exact same treatment.
Operate a protective sleeve over the stainless metal exhaust tube and bend a swan neck at the top. Drill a pilot gap in the transom and once certain it is in the right place, take the exhaust fitting outdoors and place it towards the transom to gauge the right angle for the gap.
Utilizing a grinding-toothed gap-cutter to prevent the gelcoat cracking, and enough marine sealant to make sure a watertight match, bolt the skin fitting in place.