Pioneer MUH-GA25VB liquid, R410A tools, Can R22 tools be used?, Description, Refrigerant piping

Conversion chart of refrigerant temperature and pressure

(MPa [Gauge])
	4.0
	3.5
pressure			R410A
	3.0		R22
liquid	2.5
	2.0
	1.5
Saturated
	1.0
	0.5
	0.0
	-0.5
	-30 -20	-10 0 10 20 30 40 50 60

NOTE : The unit of pressure has been changed to MPa on the international system of units(SI unit system).

The conversion factor is: 1(MPa [Gauge]) =10.2(kgf/f [Gauge])

(:)

1.Tools dedicated for the air conditioner with R410A refrigerant

The following tools are required for R410A refrigerant. Some R22 tools can be substituted for R410A tools.

The diameter of the service port on the stop valve in outdoor unit has been changed to prevent any other refrigerant being charged into the unit. Cap size has been changed from 7/16 UNF with 20 threads to 1/2 UNF with 20 threads.

R410A tools	Can R22 tools be used?	Description
		R410A has high pressures beyond the measurement range of existing
Gauge manifold	No	gauges. Port diameters have been changed to prevent any other refrigerant
		from being charged into the unit.
Charge hose	No	Hose material and cap size have been changed to improve the pressure
		resistance.
Gas leak detector	No	Dedicated for HFC refrigerant.
Torque wrench	Yes	6.35 mm and 9.52 mm
Flare tool	Yes	Clamp bar hole has been enlarged to reinforce the spring strength in the tool.
Flare gauge	New	Provided for flaring work (to be used with R22 flare tool).
Vacuum pump	New	Provided to prevent the back flow of oil. This adapter enables you to use
adapter		vacuum pumps.
Electronic scale for	New	It is difficult to measure R410A with a charging cylinder because the
refrigerant charging		refrigerant bubbles due to high pressure and high-speed vaporization

No : Not Substitutable for R410A Yes : Substitutable for R410A

2.Refrigerant piping

1Specifications

Use the refrigerant pipes that meet the following specifications.

Pipe	Outside diameter	Wall	Insulation material
	mm	thickness
For liquid	6.35	0.8 mm	Heat resisting foam plastic
For gas	9.52	0.8 mm	Specific gravity 0.045 Thickness 8 mm

•Use a copper pipe or a copper-alloy seamless pipe with a thickness of 0.8 mm. Never use any pipe with a thickness less than 0.8mm, as the pressure resistance is insufficient.

4