NATE ICE Heat Pump exam with correct
answers
A correct statement regarding the outdoor coil of a heat pump is that damage may
result if the: - correct answer -defrost water does not drain from the coil.
A dirty air filter in a heat pump operating in the heating mode could result in: -
correct answer -excessive head pressure.
A dirty air filter on a heat pump system will result in: - correct answer -high head
pressure in the heat mode and low suction pressure in the cool mode.
A fan delay can add cooling efficiency by: - correct answer -operating the indoor
blower after compressor shut-down
A heat pump that uses a piston-type metering device on the indoor coil has a piston
with a larger-than-recommended orifice. This will result in: - correct answer -low
head pressure and high suction pressure in the cooling cycle.
A new 3-ton heat pump installation has an undersized return air duct. In the heating
mode, the unit will most likely: - correct answer -go off on high pressure safety.
A technician has just installed a heat pump. It heats satisfactorily, but will not cool.
A possible cause of this problem is the: - correct answer -indoor check valve is stuck
open
An electric furnace has four 5-kW elements that are rated at 240V. The available
voltage to operate the furnace is 208V. Which of the following indicates the effect
that this will have on the BTUH output of the furnace? - correct answer -it will
reduce the BTUH output of the furnace.
An electric furnace is controlled by a single-stage thermostat. On a call for heat, all
connected circuits function properly; however, the heat rise across the furnace is
much lower than design requirement. Which one of the following actions should the
answers
A correct statement regarding the outdoor coil of a heat pump is that damage may
result if the: - correct answer -defrost water does not drain from the coil.
A dirty air filter in a heat pump operating in the heating mode could result in: -
correct answer -excessive head pressure.
A dirty air filter on a heat pump system will result in: - correct answer -high head
pressure in the heat mode and low suction pressure in the cool mode.
A fan delay can add cooling efficiency by: - correct answer -operating the indoor
blower after compressor shut-down
A heat pump that uses a piston-type metering device on the indoor coil has a piston
with a larger-than-recommended orifice. This will result in: - correct answer -low
head pressure and high suction pressure in the cooling cycle.
A new 3-ton heat pump installation has an undersized return air duct. In the heating
mode, the unit will most likely: - correct answer -go off on high pressure safety.
A technician has just installed a heat pump. It heats satisfactorily, but will not cool.
A possible cause of this problem is the: - correct answer -indoor check valve is stuck
open
An electric furnace has four 5-kW elements that are rated at 240V. The available
voltage to operate the furnace is 208V. Which of the following indicates the effect
that this will have on the BTUH output of the furnace? - correct answer -it will
reduce the BTUH output of the furnace.
An electric furnace is controlled by a single-stage thermostat. On a call for heat, all
connected circuits function properly; however, the heat rise across the furnace is
much lower than design requirement. Which one of the following actions should the
