Sanyo 85464359982001 Allowable tubing, length, 1, 2, L1+ 1+ 2, Allowable elevation, difference

07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 11

1-5. Tubing Length

Select the installation location so that the length and size of refrigerant tubing are within the allowable range shown in the figure below.

1.Main tubing length LM = LA + LB … ≤ 262 ft

2.Main distribution tubes LC – LG are selected according to the capacity after the distribution joint.

3. The outdoor connection main tubing (B portion) is determined by the total capacity of the outdoor units that are connected to the tube ends.

4.Sizes of indoor unit connection tubing 1 – 40 are determined by the connection tubing sizes on the indoor units.

H3

L5

B

L1

L2

LM

A

Balance tubing		LB	LC	LD
(ø1/4")	LA

L3

H1

Explanation of symbols		4
		For
Distribution joint	LE	extension
	Max. 1.3 ft
(APR: purchased separately)
		For
		extension
Ball valve (field supply)	Max. 1.3 ft	LG
T-joint (field supply)
Solidly welded shut	LF	1
(pinch weld)	L4

5

2

38 39

3

40

H2

R410A distribution joint APR-CHP680BA (for outdoor unit) APR-CHP1350BA (for outdoor unit) APR-P160BA (for indoor unit) APR-P680BA (for indoor unit) APR-P1350BA (for indoor unit)

Note: Do not use commercially available T-joints for the liquid tubing and parts.

* Be sure to use special R410A distribution joints (APR: purchased separately) for outdoor unit connections and tubing branches.

Table 1-8 Ranges that Apply to Refrigerant Tubing Lengths and to Differences in Installation Heights

Item	Mark
	L1
	∆L (L2 – L4)
Allowable tubing	LM
length
	1, 2... 40
	L1+ 1+ 2 ... 39	+
	A+LE+LF+LG
	L5
Allowable elevation	H1
difference	H2
	H3
Allowable length of	L3
joint tubing
L = Length, H = Height

Contents

Actual length

Max. tubing length

Equivalent length

Difference between max. length and min. length from the No.1 distribution joint

Max. length of main tubing (at max. diameter)

Max. length of each distribution tube

Total max. tubing length including length of each distribution tube (only liquid tubing)

Distance between outdoor units

When outdoor unit is installed higher than indoor unit

When outdoor unit is installed lower than indoor unit

Max. difference between indoor units

Max. difference between outdoor units

T-joint tubing (field-supply); Max. tubing length between the first T-joint and solidly welded-shut end point

Length (ft.)

>	492
>	574
>	131
>	262 *3
>	98
>	984
>	32
>	164
>	131
>	49
>	13
>	6.6

NOTE

1:The outdoor connection main tubing ( B portion) is determined by the total capacity of the outdoor units that are connected to the tube ends.

2:If the longest tubing length (L1) exceeds 295 ft. (equivalent length), increase the sizes of the main tubes (LM) by 1 rank for gas tubes and liquid tubes. (Use a field supply reducer.) (Select the tube size from the table of main tube sizes (Table 1-9) on the following page (LA table), and from the table of refrigerant tubing sizes (Table 1-14) on the second following page.)

3:If the longest main tube length (LM) exceeds 164 ft., increase the main tube size at the portion before 164 ft. by 1 rank for the gas tubes. (Use a field supply reducer.)

(For the portion that exceeds 164 ft., set based on the main tube sizes (LA) listed in the table on the following page.)

4:If the size of the existing tubing is already larger than the standard tubing size, it is not necessary to further increase the size.

*If the existing tubing is used, and the amount of on-site additional refrigerant charge exceeds the value listed below, then change the size of the tubing to reduce the amount of refrigerant.

Max. additional charge for 1 outdoor unit: 62 lbs

Max. additional charge for 2 outdoor units: 111lbs

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