How to charge a heat pump in the winter?

Answer

First, check for clean coils and filters and proper airflow. When charging a heat pump during the heating mode, you should always use the sub cooling method of charging. Sub cooling is any temperature of a liquid or solid that is below its saturation temperature. The material will continue to lower in temperature as more heat is rejected, or be sub cooled. Then, check the charge using the sub cooling method.
Q&A Related to "How to charge a heat pump in the winter?"
by subcooling.
http://wiki.answers.com/Q/How_do_you_charge_a_heat...
The Heat Pump Process Refrigerant is passed through a circuit of evaporation and condensation, drawing heat from one area and transferring it to another. Refrigerators and air conditioners
http://www.ehow.com/how_4923612_how-heat-pump-work...
In the same way an air conditioner pulls cold air into homes from the surroundings and pushes hot air out to surroundings. It's just in reverse. Kinda like a back-to-front version
http://answers.yahoo.com/question/index?qid=201308...
Trever, The tech is all wet. Degrees above ambient is completely wrong. You need to check the specs for that unit against ambient and check the superheat (fixed orifice) or subcool
http://en.allexperts.com/q/Heating-Air-Conditionin...
Explore this Topic
1. Determine your desired indoor temperature setting for the winter. Note that heat pumps are the most energy efficient when left at one temperature, so it is ...
1. Turn the heat pump off at the thermostat. 2. Remove the service valve caps from both of the refrigerant lines. The service valves connect the outside condensing ...
1. Turn the heat pump off at the thermostat. 2. Remove the service valve caps from both of the refrigerant lines. The service valves connect the outside condensing ...
About -  Privacy -  AskEraser  -  Careers -  Ask Blog -  Mobile -  Help -  Feedback © 2014 Ask.com