Nate
Heat
/
Pump Test Questions With Correct Answers
/ / / / / /
An /electronic /leak /detector /can /typically /detect /a /leak /rate /as /small /as:
1⁄2 /ounce /per /year
Heat /pumps /are /typically /sized /for /the /conditioned /space /based /on /the:
Cooling /load
Which /of /the /following /is /used /to /make /accurate /residential /load /calculations?
ACCA /Manual /J
When /changing /out /an /indoor /coil /the /installer /must /be /certain /to:
Plumb /the /cabinet /so /its /sides /are /vertical
What /is /the /effect /of /170 /volts /supplied /to /a /208/230 /volts /compressor?
Current /increases /and /the /motor /may /trip /on /overload
Refrigerant /subcooling /is /a /measurement /of /the /difference /between
Condensing /saturation /temperature /and /liquid /line /temperature.
The /voltage /most /often /used /to /power /the /outdoor /unit /in /a /residential /system /is:.
240V /single /phase.
To /properly /set /a /heat /anticipator /it /is /necessary /to /check /the:
Heating /control /circuit /amperage /draw
What /can /cause /a /lower /than /normal /suction /pressure
A /restricted /drier
What /is /a /primary /consideration /when /bending /soft /copper /tubing /into /a /bend /of /any /radius?
The /cross-sectional /are /of /the /tube /must /not /be /significantly /reduced
,When /is /vapor /line /condensation /of /a /residential /heat /pump /in /the /cooling /mode /a /concern?
Routing /refrigerant /line /within /a /wall
Bent /vanes /on /a /direct /drive /blower /wheel /in /an /air /handler /can /cause:
Loss /in /airflow, /excessive /blower /motor /wear, /and /increased /noise
A
/technician
/measures
/the
/return
/air
/temperature /of /a /100,000 /Btu /output /furnace /to /be /65 /F /and /the /supply /side /air /temperature
/is /135 /F. /What /is /the /SCFM /(standard /CFM)?
1323 /SCFM
What /would /cause /a /voltage /reading /across /a /closed /contact /in /a /24V /control /circuit?
Pitted /or /dirty /contacts
A /reason /for /cool /air /complaints /when /a /heat /pump /is /operating /in /the /heating /cycle /is:
Excessive /supply /air /velocitie
The /purpose /of /performing /a /duct /traverse /is /to /determine /the /average /duct:
Airflow
/using
/multiple /CFM /readings /taken /from /several /locations /across /the /cross /section /of /the /duct.
When
/fabricating
/ductboard
/for /
a /horizontal /duct /36" /X /24", /which /of /the /following /is /a /preferred /method /for /preventing /wall
/deflection?
Use /12 /gauge /rods, /both /horizontally /and /vertically /at /a /minimum /of /every /16"
What /is /used /to /measure /duct /static /pressure?
Differential /pressure /gauge
, To
/more
/accurately
/sense
/the
/refrigerant
/temperature
/of
/horizontal
/suction
/line
/that
/are /
1
/1⁄2
/or
/lager, /a /thermostatic /expansion /valve /sensing /bulb /should /be /mounted /at /which /positions?
4 /or /8 /o'clock
What /are /the /first /two /checks /typically /made /on /an /electronic /control?
Presence /of /proper /input /signals /and /proper /output /voltages
The
/technician
/suspects
/that
/an
/outdoor
/thermostat
/used /to /bring /on /auxiliary /heat /may /be /out /of /calibration. /The /thermostat /is /a /close-on-
fall /type /that /is /adjustable. /One /method /for /checking /the /thermostats /calibration /is /to:
Manually
/rotate
/the
/shaft
/until
/the
Heat
/
Pump Test Questions With Correct Answers
/ / / / / /
An /electronic /leak /detector /can /typically /detect /a /leak /rate /as /small /as:
1⁄2 /ounce /per /year
Heat /pumps /are /typically /sized /for /the /conditioned /space /based /on /the:
Cooling /load
Which /of /the /following /is /used /to /make /accurate /residential /load /calculations?
ACCA /Manual /J
When /changing /out /an /indoor /coil /the /installer /must /be /certain /to:
Plumb /the /cabinet /so /its /sides /are /vertical
What /is /the /effect /of /170 /volts /supplied /to /a /208/230 /volts /compressor?
Current /increases /and /the /motor /may /trip /on /overload
Refrigerant /subcooling /is /a /measurement /of /the /difference /between
Condensing /saturation /temperature /and /liquid /line /temperature.
The /voltage /most /often /used /to /power /the /outdoor /unit /in /a /residential /system /is:.
240V /single /phase.
To /properly /set /a /heat /anticipator /it /is /necessary /to /check /the:
Heating /control /circuit /amperage /draw
What /can /cause /a /lower /than /normal /suction /pressure
A /restricted /drier
What /is /a /primary /consideration /when /bending /soft /copper /tubing /into /a /bend /of /any /radius?
The /cross-sectional /are /of /the /tube /must /not /be /significantly /reduced
,When /is /vapor /line /condensation /of /a /residential /heat /pump /in /the /cooling /mode /a /concern?
Routing /refrigerant /line /within /a /wall
Bent /vanes /on /a /direct /drive /blower /wheel /in /an /air /handler /can /cause:
Loss /in /airflow, /excessive /blower /motor /wear, /and /increased /noise
A
/technician
/measures
/the
/return
/air
/temperature /of /a /100,000 /Btu /output /furnace /to /be /65 /F /and /the /supply /side /air /temperature
/is /135 /F. /What /is /the /SCFM /(standard /CFM)?
1323 /SCFM
What /would /cause /a /voltage /reading /across /a /closed /contact /in /a /24V /control /circuit?
Pitted /or /dirty /contacts
A /reason /for /cool /air /complaints /when /a /heat /pump /is /operating /in /the /heating /cycle /is:
Excessive /supply /air /velocitie
The /purpose /of /performing /a /duct /traverse /is /to /determine /the /average /duct:
Airflow
/using
/multiple /CFM /readings /taken /from /several /locations /across /the /cross /section /of /the /duct.
When
/fabricating
/ductboard
/for /
a /horizontal /duct /36" /X /24", /which /of /the /following /is /a /preferred /method /for /preventing /wall
/deflection?
Use /12 /gauge /rods, /both /horizontally /and /vertically /at /a /minimum /of /every /16"
What /is /used /to /measure /duct /static /pressure?
Differential /pressure /gauge
, To
/more
/accurately
/sense
/the
/refrigerant
/temperature
/of
/horizontal
/suction
/line
/that
/are /
1
/1⁄2
/or
/lager, /a /thermostatic /expansion /valve /sensing /bulb /should /be /mounted /at /which /positions?
4 /or /8 /o'clock
What /are /the /first /two /checks /typically /made /on /an /electronic /control?
Presence /of /proper /input /signals /and /proper /output /voltages
The
/technician
/suspects
/that
/an
/outdoor
/thermostat
/used /to /bring /on /auxiliary /heat /may /be /out /of /calibration. /The /thermostat /is /a /close-on-
fall /type /that /is /adjustable. /One /method /for /checking /the /thermostats /calibration /is /to:
Manually
/rotate
/the
/shaft
/until
/the
