Sanyo XMHX1252, XMHX1852, CHDZR09053 Header joint system, Tube branching methods horizontal use

Always check the gas density WARNING limit for the room in which the

unit is installed.

1-11. Check of Limit Density

When installing an air conditioner in a room, it is necessary to ensure that even if the refrigerant gas accidentally leaks out, its density does not exceed the limit level for that room. If the density could exceed the limit level, it is necessary to provide an opening between the unit and the adjacent room, or to install mechanical ventilation which is interlocked with a leak detector.

(Total refrigerant charged amount: oz)

(Min. indoor volume where the indoor unit is installed: ft.3)

<Limit density 0.3 (oz/ft.3)

The limit density of refrigerant which is used in this unit is 0.3 oz/ft.3 (ISO 5149).

The shipped outdoor unit comes charged with the amount of refrigerant fixed for each type, so add it to the amount that is charged in the field. (For the refrigerant charge amount at shipment, refer to the unit’s nameplate.)

1-12. Installing Distribution Joint

Pay special attention to any CAUTION location, such as a basement,

etc., where leaking refrigerant can accumulate, since refrig- erant gas is heavier than air.

(1)Refer to “HOW TO ATTACH DISTRIBUTION JOINT” enclosed with the optional distribution joint kit (APR-CHRZP900BAB, RZP224BAB, RZP680BAB, RZP1350BAB).

(2)When creating a branch using a commercially available T-joint (header joint system), orient the main tubing so that it is either horizontal (level) or vertical. In order to prevent accumulation of refrigerant oil in stopped units, if the main tubing is horizontal then each branch tubing length should be at an angle that is greater than horizon- tal. If the main tubing is vertical, provide a raised starting portion for each branch.

[Header joint system]

●Be sure to solidly weld shut the T-joint end (marked by “X” in the figure). In addition, pay attention to the insertion depth of each connected tube so that the flow of refrigerant within the T-joint is not impeded.

●When using the header joint system, do not make fur- ther branches in the tubing.

●Do not use the header joint system on the outdoor unit side.

(3)If there are height differences between indoor units or if branch tubing that follows a distribution joint is connect- ed to only 1 unit, a trap or ball valve must be added to that distribution joint. (When adding the ball valve, locate it within 15 - 3/4" of the distribution joint.)

If a trap or ball valve is not added, do not operate the system before repairs to a malfunctioning unit are completed. (The refrigerant oil sent through the

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tubing to the malfunctioning unit will accumulate and may damage the compressor.)

Minimum indoor volume & floor area as against the amount of refrigerant is roughly as given in the follow- ing table.

	ft.3								ft.2
	10000								1136
indoorMin.volume	9500								1079	indoorMin.floor area	ceilingthe(whenis 8.8 ft. high)
				the density		limit of
	2000								227
	9000	Range below							1022
	8500	the density limit of							966
	8000	0.3 oz/ft.3							909
	7500								852
	7000	(countermeasures							795
	6500	not needed)							738
	6000								682
	5500								625
	5000								568
	4500								511
	4000								454
	3500								398
	3000			Range above					341
	2500								284
				0.3 oz/ft.3
	1500								170
	1000			(countermeasures					114
	500			needed)					57
	0								0
	0	500	1000	1500	2000		2500	3000
									oz

Total amount of refrigerant

Tube branching methods (horizontal use)

					B
		A	Horizontal		A
	B		line	View as seen
				from arrow
		Arrow view
Header joint system (Indoor)
		Install at a
		positive angle
Outdoor		Indoor
					Install at a
Indoor					positive angle
					(15 – 30°)
Horizontal
line
		Indoor
L3	6.56 ft.	Horizontal		Solidly welded
		line		shut (X)
Types of vertical trap specifications
(When using ball valve)
Main tubing
Ball valve	Indoor unit (more than 2 units)
	(If only 1 unit is connected, a ball valve
(BV: purchased
separately)	is also needed on this side.)
Indoor unit (1)
(When not using ball valve)
Main tubing		Horizontal
		Indoor unit		(Each unit is connected
Branch tubing is				to tubing that is either
				level or is directed
directed upward.
				downward.)
	More than
	7–7/8"
Indoor unit is directed downward

W-3WAY_ECO-i_US.indd 15 2008/02/07 10:55:40