NATE Industry Competency Exam Heat Pumps Questions With Correct Answers.

NATE
Industry
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Competency
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Exam
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Heat Pumps Questions With Correct Answers
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A
/correct


/statement /regarding /the /outdoor /coil /of /a /heat /pump /is /that /damage /may /result /if /the:




a. /Indoor /blower /fails /to /operate.

b. /Defrost /water /does /not /drain /from /the /coil.

c. /Indoor /check /valve /sticks.

d. /Outdoor /metering /device /sticks /open. /- /correct /answer(s) /✔✔ /B



If /this /unit /is /installed /on /208 /volts, /the /transformer /primary /should /be /wired: /



a. /To /the /black /and /red /leads /of /the /transformer.

b. /To /the /black /and /orange /leads /of /the /transformer.

c. /To /the /red /and /orange /leads /of /the /transformer.

d. /To /the /black /and /brown /leads /of /the /transformer. /- /correct /answer(s) /✔✔ /A



During
/the


/initial

, /startup
/of /


a
/heat


/pump /with /a /long /line /set, /which /of /the /following /is /the /most /accurate /method /to /charge /the


/system?




a. /Put /the /unit /into /the /cooling /mode /and /charge /it /by /the /superheat /method.

b. /Weight /in /the /exact /charge.

c. /Charge /to /proper /sub-cooling.

d. /Charge /the /unit /by /the /superheat /method /in /the /heating /mode. /- /correct /answer(s) /✔✔ /B



A
/technician


/has


/just


/installed /


a /heat /pump. /it /heats /satisfactorily /but /will /not /cool. /A /possible /cause /of /this /problem /is /the:



a. /Outdoor /check /valve /is /not /closing.

b. /Indoor /check /valve /is /stuck /closed.

c. /Indoor /check /valve /is /stuck /open.

d. /Outdoor /metering /device /is /not /functioning. /- /correct /answer(s) /✔✔ /C



On /
a
/heat


/pump


/system


/operating


/in


/the