Heat Pump ESCO Questions & 100% Verified Answers | Latest Update | Already Graded A+

An air-to-air heat pump has many of the same components as an air conditioning system. The major difference is that a heat pump also has an : Reversing valve What is the difference between "demand defrost" and "timed defrost"? : Demand defrost happens only when needed and timed defrost is based on time/temperature. The thermostat that controls the auxiliary electric heat according to the outdoor temperature is called the; : Outdoor ambient thermostat The outdoor temperature at which the heat pump provides the same amount of heat as the heat loss of the conditioned space without an auxiliary heat is known as the; : Initial balance point At what temperature is an outdoor ambient thermostat normally set? : Slightly above the initial balance point. 2 | P a g e The outdoor coil is frozen solid on a "no heat" service call. The most likely reason is; : The outdoor fan is inoperative. In order to determine a heat pumps' balance point, you must first calculate; : The building's heat load. When a heat pump is used for heating and cooling, the system is sized by the; : Cooling load. A high efficiency heat pump system designed to function from high to low ambient conditions below 10*F, may have? : Two outdoor coils with each one incorporating a dual stage compressor. Room thermostats for heat pumps should be installed; : As near to the main return air grill as possible. When the heat pump compressor has malfunctioned, the customer has the option to switch the system into; : Emergency heat mode. Start up with a night set back digital thermostat requires t