Heat Pump Test 1 ( week 2)

The purpose of a metering device is to ____.

• regulate the refrigerant flow into the evaporator

• lower the pressure of the liquid refrigerant

• lower the boiling point of the refrigerant

• all of the above

In order to switch the refrigerant flow, a 4-Way valve needs a pressure differential of __________ between the high and low sides of the system.

• 75 psi

• 50 psi

• 25 psi

• 100 psi

Which component switches the heat pump refrigeration cycle from one mode to the other?

• TXV

• Outdoor Thermostat

• Check Valve

• Reversing Valve

The metering device that has no moving parts and does not control evaporator pressure or superheat is known as the:

• Thermostatic Expansion Valve

• Thermostatic Tube

• Capillary Thermostatic Valve

• Capillary Tube

Tags

NGSS.HS-PS3-4

In the heating mode, the refrigerant is metered through the expansion device at the ____________ coil.

• front door

• next-door

• outdoor

• indoor

Tags

NGSS.HS-PS3-4

In the cooling mode, the refrigerant bypasses the expansion device at the ____________ coil.

• indoor

• outdoor

• front door

• next door

Tags

NGSS.MS-PS3-3

This component of a heat pump system protects the compressor from liquid migration during the off-cycle.

• Charge Compensator

• Suction Line Filter Drier

• Suction Line Accumulator

• Crankcase Heater

Tags

NGSS.MS-PS3-3

Defrost controls can be either mechanical or electronic.

• True

• False

The expansion valve that can control the evaporator superheat is called the:

• Thermostatic Capillary Tube

• Thermostatic Expansion Valve

• Capillary Tube

• Fixed Bore Expansion Device

Tags

NGSS.HS-PS3-4

Where would you find the RPM and amperage draw information for a PSC motor?

• Name Plate

• Owner's Manual

• Information sticker next to the electrical controls of the outdoor unit