A term used to describe a valve seat where the valve seat and valve stem share a common center. In this design, the valve can seal against the seat no matter how it is rotated. cylinder head. The part of the engine that is bolted to the engine block and caps off the top of the combustion chamber.
Heat Pump â The heat pump is built into the AC and works great if you use it correctly. From my experience and mistakes Iâve learned a lot about this little heat pump: 1. The Heat Pump does not work when temperatures are below 45 degrees. 2. Do not attempt to run the heat pump when plugged into a 20a outlet, use the heat pump when youâre plugged into a 30a or 50a plug. 3.
Re: Heat Pump temperature differential. If the heat pump is newer, seer 13 and up with variable speed and R410 the supply temp can be as high as 105 deg. with 70 return.f the heat pump is newer, seer 13 and up with variable speed and R410 the supply temp can be as high as 105 deg. with 70 return.