conditioner gauges is chamber device that is design to control the flows ofIt holds both compound and high pressure. refrigeration manifold gauges look like: manifold gauges set have the three chambers: the low pressure chamber (left side), utility chamber (middle), and the high pressure chamber (right side). connect the HVAC manifold gauge to the air conditioner units, he connects the low pressure side of air conditioner unit to low pressure gauge side. to read the pressure in discharge line he connects the high pressure gauge hose to the air conditioner high pressure side. utility port (the middle chamber) is a place where we connect the hose to vacuum pump, recovery units or the port to add or remove refrigerant from ACAir conditioning gauges is used to measure air conditioner units pressure within closed-system to evaluate or troubleshoot theGauges manifold set is the most frequently used item when it comes to refrigerant or pressure.

conditioning gauge set allows the HVAC technician to check central air conditioning unit operating pressures, transfer Ac refrigerant, pressure test system, purge the system with nitrogen, and perform other gauges manifold set includes the hoses, the manifold, the valves, the compound gauge (low pressure gauges) and high pressure gauge. learn how air conditioning gauges work from two-valve gauges (like the AC gauge picture above) and from a R-22 manifold gauge set. air conditioner gauges work is by open and closing the hand valve. can see in AC gauge assembly above, it has needle and small port to the utility chamber from both high and low pressure chamber. needle and small port allow the refrigerant to flow from low pressure chamber to utility chamber or across from low pressure chamber to high pressure the low pressure hand valves, we have to turn it counterclockwise. is the low pressure port to the utility chamber and to close the low pressure

port to the utility chamber we have to turn it clockwise. open and close the high pressure hand valve is similar to compound gauge (lowWe turn counterclockwise to open AC gauge and to close thegas heat and ac unit gauge we turn clockwise.do ac units run on gas connect low pressure hoses to air conditioner low pressure side (suction line),air handling unit price list india we’ll automatically read the pressure in the low pressure gauges withoutIt does the same with the high pressure side. reason we need to open the port to the utility chamber (hose) is to add or remove refrigerant, pull system on vacuum, or transfer refrigerant to cylinder. The utility hose is where these accessories are connected. need to read the pressure and temperature of close-system, we’ll just connected

HVAC gauges to central air conditioner. HVAC gauges videosMake sure to press the Play button in the player controls to watch it. Air conditioner gauge training Videos made by DrZarkloff are numerous manifold gauges, but we’ll be discussion two categories of two-valve gauge manifold set has the two hand valves and three hose ports. hand valves are adjustable. We could adjust the hand valves to monitor the system pressures within the system. Notes: this air conditioning gauges set has the two gauges: the high side gauge and the low side gauges. the high side of the air conditioner units we have to connect the hose to high side ports and to monitor from the low side of central air conditioning units we have to connect the hose to low side ports. advantage a four-valve has over two-valve is it has the two extra valves. two extra valve allows the technician to connect to refrigerant cylinder and vacuum pump without disconnect the service hose (utility hose).

four-valve ports are connected to:Air Conditioner Gauges Part 2What you will learn from this article Air Conditioner Condenser Electrical Components:Brief description of air conditioner condenser electrical componentsCode requirements for the condensing unit feeder circuit, fuse box, and wire running to the condenserWiring inside the condenserDescription of various electrical components inside the condenserLots of resource and related links to help you learn more.Air Conditioner Condenser Electrical ComponentsThere are many electrical components inside an air conditioner unit. From relays to contactors to electric motors and wiring. It all works together to make your air conditioner run smoothly. It is almost like a ballet and the air conditioner sequence of operation follows a specific sequence to work properly.For the purpose of brevity, the focus of this article will be on the condenser and the electrical components in an air conditioner condenser. From the disconnect box on the wall next to the condenser all the way through the control panel and into the components we’ll cover all the various electrical components and how they work together to make your air conditioner work.

Related Link: Read more about condensing units (opens in a new window) Air Conditioner Condenser Electrical Components - Fuse Box or DisconnectThe fuse box or disconnect for the air conditioner condenser is required by NEC code and should be within reach of the condenser. The fuse box should have a way of protecting the circuit for the condenser. Despite the breaker in the main panel, an air conditioner disconnect box needs to be fused or have some sort of trip protection in case an electrical problem occurs inside the condenser with an electrical component. The protection should be sized according to the ampacity of the air conditioner as rated by the manufacturer.This information is available for unit ampacity and fuse size on the nameplate on the side of the condenser. The wire supplying the air conditioner unit should be sized according to NEC tables at 125% of RLA or Run Load Amps which is also rated on the unit plate with other data.NEC and Electrical DataThis information is available for unit ampacity and fuse size on the name plate on the side of the condenser.

The wire supplying the air conditioner unit should be sized according to NEC tables at 125% of RLA or Run Load Amps which is also rated on the unit plate with other air conditioner nomenclature. The fuse should be sized no larger than 175% of RLA of the unit and with exceptions can be raised to no more than a maximum of  225% of RLA. This allows for the fuses to be able to overcome the start amps of the unit. Start amps are usually referred to as LRA or Locked Rotor Amps which can far exceed the RLA for the first split second when the unit starts.Refer to Article 440.22 of the NEC for more information on this but those are the basics for disconnects, fusing, and wiring for the disconnect. On a side note - the fuses used in a fused disconnect should be dual element fuses and often referred to as slow blow fuses. These fuses are designed to handle the inrush current on equipment start-up.Related Link: Read more about the NEC and HVAC including Branch Circuit Conductor Sizing  for air conditioner and heating equipment (opens in a new window)Air Conditioner Condenser Electrical Components - Wiring and Components in the CondenserWiring inside the condenser can be classified as control wire and line voltage wire.

The control wire in residential air conditioner systems originates at the thermostat and is 24 volts. This controls all the relays and contactor(s) in the air conditioner and runs through any safety or limits in the condenser. What type of safeties can be in the condenser? Refrigeration pressure switches are commonly used in the higher rated equipment. Some manufacturers put high-pressure refrigeration switches in all their condensing units. In higher end condensers you will also find low-pressure refrigeration switches.These switches will trip the system shutting it down because extreme high-pressure and low-pressure in the condenser can cause serious issues and it is better to shut the system down as it needs repair to correct the problem. Additionally, an air conditioner condenser can have a delay switch in the control circuit to prevent the condenser from short cycling in various cases. Short cycling is bad for the electrical components in the air conditioner condenser especially the compressor which can be irreparably harmed if short cycling occurs.

Resource Link: Learn about control circuits for air conditioning and heating systems (opens in a new window)Other HVAC Electrical ComponentsThe line voltage wiring carries the voltage and amps to the fan motor and the compressor. It is very important that all the connections in the line voltage circuit are very tight. Lose connections cause problems with build up of heat and corrosion on the connections. Eventually, the heat and the corrosion will cause the wire to break off from the connection altogether and failure of the compressor or fan motor will occur. In the line voltage circuit inside a condenser of a residential air conditioner are a contactor, run capacitors for the compressor and condenser fan motor, and the condenser fan motor and the compressor.If the system requires a start capacitor the start capacitor for the compressor will also be in the circuit for the air conditioner condenser. There will be a potential relay in the circuit that will also be wired to line voltage as the potential relay uses line voltage and not control voltage.

Resource Link: Learn how start capacitors help motors start when extra torque is needed (opens in a new window) Air Conditioner Condenser Electrical Components - Crank Case HeatersMany air conditioners and heat pumps have crankcase heaters to prevent migration of refrigerant to the compressor crankcase in low ambient temperatures outside. The crankcase heater is designed to protect the compressor from liquid refrigerant on start up. Liquid does not compress therefore liquid can and will damage mechanical components inside the compressor. The crankcase heaters keeps the oil in the crankcase hot to prevent the liquid refrigerant from damaging the compressor through liquid slugging.Some crankcase heaters are controlled with a temperature switch so when the temperature outside drops the crankcase heater is switched on while other crankcase heaters remain on all the time with no switching at all except the breaker or disconnect for the condenser.In the event of a power loss, many manufacturers recommend letting the air conditioner sit for 24 hours after power is restored.