UNIT 67 REVIEW QUESTIONS ANSWER KEY GO BACK TO INDEX
67-2) Give a common application for horizontal water source heat pumps.
67-3) Explain the difference between an open loop and a closed loop.
67-5) What are the main considerations when sizing an air source heat pump?
67-6) How does oversizing a heat pump affect its efficiency?
67-7) What are some of the factors that should be considered when choosing a
location for outdoor equipment?
67-8) Explain the following data plate ratings:
RLA – rating load amps of the compressor, gives the approximate operating
compressor amp draw
67-9) Plot the balance point for the following system.
Heating Capacity at 45° = 30,000 BTU/Hr
67-10) How does the staging and sequence of operation for a dual fuel heat pump
system differ from a traditional heat pump with electric strip heat?
67-11) How should fiberboard duct be connected to a heat pump?
67-12) When are condensate pumps necessary?
67-13) How is the tubing used in ground source systems joined?
67-14) Describe how a solar assisted heat pump works.
67-15) List the steps required to fill a ground source water loop for the first time.
Flush debris out with water before connecting to unit
67-16) Use table 52.7 to determine the water flow through a model 038 water source
67-17) Use Table 67.6 to determine the maximum fuse size for model 024 with heat
67-18) How is the water flow through a water source heat pump measured?
67-19) What steps must be taken when installing split system units before opening the
unit installation valves?
67-20) What items should be checked when converting an indoor air handler from
upflow configuration to horizontal configuration?
67-21) How does the Carrier infinity control system differ from traditional low
voltage control systems?
67-22) What type of antifreeze solutions may be used in ground loops?
67-23) Explain the difference between the two uses of the “B” terminal in heat pump
controls.
67-24) What type of heat exchanger coil is best suited to open loop well systems?
202
Chart for Question 67-9
0° 10° 20° 30° 40° 50° 60° 70°
Outdoor Tem
p
erature
Heat Pump Capacity
Balance Point = 33°F
Heat Loss
55,000
50,000
45,000
40,000
35,000
30,000
25,000
20,000
15,000
10,000
5,000
BTUs/Hr