Heat Pumps Exam Study Guide with Complete Solutions
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Course
ESCO
Institution
ESCO
Heat Pumps Exam Study Guide with
Complete Solutions
reversing valve - Answer️️ -an air to air pump has many of the same
components as an air conditioning system. the major difference is that a
heat pump has a
demand defrost happens only when when needed and timed defrost is
based on timed...
Heat Pumps Exam Study Guide with
Complete Solutions
reversing valve - Answer✔️✔️-an air to air pump has many of the same
components as an air conditioning system. the major difference is that a
heat pump has a
demand defrost happens only when when needed and timed defrost is
based on timed /temp - Answer✔️✔️-what is the difference btw demand
defrost and timed defrost
Outdoor ambient tstat - Answer✔️✔️-The tstat controls the auxiliary electric
heat according to the outdoor temp
Initial balance point - Answer✔️✔️-The outdoor temp at which the heat
pump provides the same amount of heat as the heat loss of the conditioned
space without auxiliary heat is known as the
Slightly above the initial balance point - Answer✔️✔️-At what temp is an
outdoor ambient tstat normally set
The outdoor fan is inoperative - Answer✔️✔️-The outdoor coil is frozen
solid on a no heat service call....most likely reason is
The buildings heating load - Answer✔️✔️-In order to determine a heat
pump balance point,you must first calculate
Cooling load - Answer✔️✔️-Heat pump are sized to handle the
The system will not properly remove humidity from the conditioned space
- Answer✔️✔️-If the indoor fan is operating at excessive speed in cooling
mode
Maintain 500 microns for 15 minutes - Answer✔️✔️-What is the industry
standard for a deep vacuum
By weight - Answer✔️✔️-Most prefered method of charging any system in
the field is
Use heat paste and wet rags while brazing the new valve - Answer✔️✔️-
Good service practice for installation of a reversing valve includes
A duel run capacitor,which allows a small amount of current to flow
through the windings - Answer✔️✔️-Off cycle crankcase heat is provided by
Airflow CFM is within normal range - Answer✔️✔️-You are checking for
proper airflow in CFM on a three ton heat pump system,.....one return grill
measuring 24"×24" ...which has a net free area of 3.4square ft....you could
measure air velocity and calculate an average of 400FPM.....from this info
you can
Second heating stage of indoor tstat - Answer✔️✔️-What control operates1st
stage of secondary heat
A max of 10 minutes - Answer✔️✔️-What is the industry standard for max
duration of defrost
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