Heat supply apparatus

An apparatus comprising:

• a first heat exchanger configured to allow heat to be exchanged between refrigerant and water flowing through the first heat exchanger;
• a second heat exchanger that is fluidly connected to the first heat exchanger such that the refrigerant flows between the first heat exchanger and the second heat exchanger, the second heat exchanger including a plurality of pipes through which the refrigerant flows within the second heat exchanger to exchange heat with outside air;
• and
• a valve regulating a flow of the refrigerant through one of the pipes,
• wherein the valve blocks the refrigerant from flowing through the one of the pipes when the apparatus is operating to heat the water, and allows the refrigerant to flow through the one of the pipes when the apparatus is operating to cool the water or to defrost the second heat exchanger.

An apparatus comprising:

• a first heat exchanger in which heat is exchanged between a refrigerant and water;
• a second heat exchanger in which heat is exchanged between the refrigerant and outdoor air,
• a compressor that compresses the refrigerant;
• and
• a first valve that directs the compressed refrigerant to one of the first heat exchanger or the second heat exchanger;
• wherein the second heat exchanger includes:
• a plurality of pipes through the which the refrigerant flows to exchange heat with the outside air,
• a plurality of distribution pipes connected to first ends of the plurality of pipes;
• a plurality of connection pipes connected to second ends of the plurality of pipes;
• and
• a second valve provided at one of a lowest one of the plurality of distribution pipes or a lowest one of the plurality of connection pipes,
• wherein the second the valve blocks the refrigerant from flowing through the one of the lowest one of the plurality of distribution pipes or the lowest one of the plurality of connection pipes when the first valve directs the compressed refrigerant to the first heat exchanger.