Sanyo XMHX1852 R410A additional charging absolutely must, Be done through liquid charging

1-15. Example of Tubing Size Selection and Refrigerant Charge Amount Additional refrigerant charging

Based on the values in Tables 1-10, 11, 12, 15 and 16-2 use the liquid tubing size and length, and calculate the amount of additional refrigerant charge using the formula below.

	Required additional		= Necessary Amount of Refrigerant Charge Per Unit + 3.93 ⋅ (a) + 2.78 ⋅ (b) + 1.99 ⋅ (c) + 1.38 ⋅ (d) +
	refrigerant charge (oz)		0.602 ⋅ (e) + 0.279 ⋅ (f)
(a) : Liquid tubing		Total length of ø7/8" (ft.)		(d) : Liquid tubing	Total length of ø1/2" (ft.)
(b) : Liquid tubing		Total length of ø3/4" (ft.)		(e) : Liquid tubing	Total length of ø3/8" (ft.)
(c) : Liquid tubing		Total length of ø5/8" (ft.)		(f) : Liquid tubing	Total length of ø1/4" (ft.)

●Charging procedure

Be sure to charge with R410A refrigerant in liquid form.

1.After performing a vacuum, charge with refrigerant from the liquid tubing side. At this time, all valves must be in the “fully closed” position.

2.If it was not possible to charge the designated amount, operate the system in Cooling mode while charging with refrigerant from the gas tubing side. (This is performed at the time of the test run. For this, all valves must be in the “fully open” position. However if only one outdoor unit is installed, a balance tube is not used. Therefore, leave the valves fully closed.)

Charge with R410A refrigerant in liquid form.

With R410A refrigerant, charge while adjusting the amount being fed a little at a time in order to prevent liquid refrigerant from backing up.

●After charging is completed, turn all valves to the “fully open” position.

●Replace the tubing covers as they were before.

1. R410A additional charging absolutely must

Balance tube

CAUTION

be done through liquid charging.

Use a flathead screwdriver

2. The R410A refrigerant cylinder has a gray base color, and the top part is pink.

3. The R410A refrigerant cylinder includes a siphon tube. Check that the siphon tube is present. (This is indicated on the label at the top of the cylinder.)

4. Due to differences in the refrigerant, pres- sure, and refrigerant oil involved in instal- lation, it is not possible in some cases to

and open by turning the part with the screw groove to the right, from " " to " "

Liquid tube

Use a hex wrench (width 5/32 inch) and turn to the left to open.

Discharge tube

Use a flathead screwdriver

Suction tube

Use a flathead screwdriver

Example:

use the same tools for R22 and for R410A.

and open by turning the part with the screw groove to the

and open by turning the part with the screw groove to the

Outdoor unit

09053 09053

model model

right, from " " to " "

right, from " " to " "

B A

LB	LC
LA	2	3	4
1
48 model	48 model	48 model	36 model

●Example of each tubing length

Main tubing	Distribution joint tubing
LA = 131 ft.	Outdoor side	Indoor side
LB = 16 ft.	A = 7 ft.	1 = 98 ft.
LC = 16 ft.	B = 7 ft.	2 = 16 ft.
		3 = 16 ft.
		4 = 65 ft.
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