Mini Split A
On mini-split systems both refrigerant lines must be insulated because they are both:
Low pressure and low temperature in the cooling mode.
Before beginning the installation, the first thing the installing technician should do is:
Read the installation instructions and make a list of materials.
A typical residential split system air conditioner consists of an:
Outdoor condensing unit, an indoor evaporator, and an air handler.
Two common methods for measuring airflow in residential systems are:
Temperature rise or static pressure drop.
The refrigerant lines for single zone mini-split air conditioners are usually connected by:
Flare fittings.
The most reliable source for information regarding system installation is:
The manufacturer's installation manual.
A watertight, flexible electrical cable connecting the system's disconnect to the condensing unit
A Whip
How is the refrigerant charge normally checked on air-conditioning systems that use a fixed orifice expansion device?
superheat
Where are indoor units on mini splits typically mounted?
Wall Mount, Ceiling Mount
What is needed to use your gauges on a mini split system when charging?
5/16 in to 1/4" Adapter
Where is solid 18-gauge copper wire typically used in residential air-conditioning installation?
The thermostat control wire
What is the minimum SEER rating for new systems?
14 Seer
The indoor unit of a mini split is powered from where?
Outside unit.
VRF systems are commercial systems. The outdoor units are normally designed to operate on ________ phase power and the indoor units on ________ phase power.
Three and single
The condensate line from the drain pan of the evaporator is normally constructed of
3/4-inch PVC.
What happens if a system is oversized for its application?
An oversized system will not run long enough to properly dehumidify the structure.
Variable refrigerant flow systems use what type of metering device?
EEV
A type system that allows simultaneous heating and cooling to different parts of a building is the:
Heat recovery system.
What is the standard airflow across the evaporator of a 3-ton residential split-system air conditioner?
1,200 CFM
How is the refrigerant charge normally checked on air-conditioning systems that use has a TXV?
Subcooled