How to Connect a Heat Pump to its Ground Source
Using a heat pump is considered to be environmentally friendly, but you have to go to the effort of connecting it to its ground source. These kinds of heat pump are designed to be used with an underground connection which collects heat from inside the earth, and then transfers it to the building through the use of anti-freeze. If you want to use a heat pump, then you will first have to connect it to the ground source, which often requires some effort and hard work.
Step 1 - Dig a Hole
In order to lay down a ground source, you will need to create a series of tubes through which antifreeze can be pushed. You need to dig deep enough to get to the thermal layer of the earth, even during cold spells, so check with your local authority about this, and discuss frost levels, which can be deeper than most people expect. Dig the hole according to the plan for your ground source, either using direct expansion, a vertical method, or the horizontal method, depending upon what you wish.
Step 2 - Lay the Pipes
You can then lay down the pipes for your heat source. Use PVC pipe and connections, and make sure that the ends are suitably closed off. You should then run these pipes back towards the house. The pipes should be as straight as possible until you get to the house, not forgetting that you have to pull your antifreeze up from the earth, which can be an effort for a heat pump. Once you are close to the house, stop, and take the pipes up to the surface. You will add your compressors and condensers there.
Step 3 - Add Compressors and Condensers
Using the instructions given with your heat pump, arrange the compressor and condenser according to the flow of the antifreeze. These pipes then need to be connected to the heat pump using electrical wires. The heat pump will take the heat which is converted from the compressor, and then use this to power the house. Use electrical wires with a solid insulation, and lay it in more small PVC pipe in order to protect it from the atmosphere. Connect the other end to the heat pump, securing the connections by removing any excess wires.
Step 4 - Running the Heat Pump
Once you are ready, you can start running the heat pump. The connections should all be tight enough that power can pass between them without being discharged elsewhere, so running the heat pump the first few times is an experiment. When you are happy that the heat pump is working correctly, you can then use it to regularly power your home.