Question

types of heat pumps include all of the following except
a water - to - water system
a water - to - air system
an air - to - air system
an earth - to - air system
a bivalent system
question 15
the purpose of the emergency heat switch on a heat pump is
to lock out the back - up heat
to bypass the heat pump
to bypass the thermostat

Explanation:

Heat pumps commonly come in water - to - water, water - to - air, air - to - air, and earth - to - air systems. A bivalent system is not a typical type of heat pump. The emergency heat switch on a heat pump is used to bypass the heat pump and use backup heating.

Answer:

Question 14: None of the above (as all the given options are common heat - pump types, and there is no non - heat - pump option).
Question 15: to bypass the heat pump