I’m more and more appreciating the idea of appropriate technology. The story begins with us being unable to change the rear furnace (our RV has two 12V/LPG pushed furnaces. The entrance furnace heats entrance half + rest room and the rear furnace heats the bed room.
From my perspective, the furnace is a black box. As soon as it’s triggered by the thermostat, a 12V fan switches on. After the furnace verifies that the fan is working it mechanically ignites the gasoline. Your LPG heater in your stick home in all probability works a lot the identical (besides it runs on 110V).
On the whole I can repair many issues as soon as I perceive how they function. Fortunately we now have an outdated coach, so it’s outfitted with fixable $25 mechanical thermostats moderately than unfixable $125 digital thermostats. If an digital thermostat stops working, there may be little you are able to do to repair it. Merely throw it away and pay $125 (they’re fairly simple to put in).
Conversely, with a handbook thermostat it’s simple to peel off the duvet (after switching off the present on the circuit breaker panel) and see what’s going on.
The concept could be very easy. There’s a coil of bimetal (two metals fused collectively) that bends in response to the temperature. The reason being that completely different metals broaden to completely different lengths relying on the temperature. These of you residing in international locations the place utility cables nonetheless run overhead may need observed how they’re strung tighter within the winter than in the summertime.
When the temperature will increase, the tip of the coil extends in the direction of a magnet. As soon as it will get shut sufficient the magnet pulls it tight making the connection.
The primary drawback is that if the contact is just not good. Use a mushy brush or my favourite, a can of compressed air (on reflection I’m realizing what a boring life I led earlier than discovering canned air), and blow the mud away. If that doesn’t repair the issue, it’s time to clear the contact. Use some coarse paper from e.g. a brown paper again or an envelope.
The second drawback is the on/off swap. You’ll observe how it is vitally easy (I like this!). This may also be cleaned with the coarse paper technique.
Fortunately I didn’t need to go any additional. The furnace switches on and off once more.
The subsequent step can be to take out the thermostat and sizzling wire the furnace to an on/off swap. This could in all probability lower your expenses in our case on condition that it takes about two minutes to warmth a room. Attempt beating that stick home dwellers! 😛
Perhaps it’s time to take my outdated electronics stuff out of storage. I’ve grand plans, equivalent to wiring an actuator to the black water (human waste) tank valve and connecting it to the fitting flip sign for simple dumping. Or perhaps not 😀
This submit was a part of Everything Home DIY – 11th ed
Initially posted 2008-11-11 07:22:46.