Sanyo Classic PAC i SPW-C256VH Instructions D'installation page 12

Table 1-9 Tubing Data for Models (Single)
Tubing Data
Liquid tube mm (in.)
Tubing size outer
diameter
Gas tube
Limit of tubing length
O u t d o o r u n i t i s
Limit of elevation
placed higher
difference between
O u t d o o r u n i t i s
the 2 units
placed lower
Max. allowable tubing length
at shipment
Required additional refrigerant
Refrigerant charged at shipment
No additional charge of compressor oil is necessary.
*1
If total tubing length becomes 30 to 50 m, charge additional refrigerant by 40 g/m.
*2
In case of single connection, limit of tubing length is 50 m.
In case of twin connection, limit of tubing length is 40 m.
Table 1-10 Connection Tube Sizes
Type capacity of indoor unit
Gas tube
Liquid tube
Amount of additional charge per 1 m
Charge with the amount of additional refrigerant calculated using the formula below, based on the values in Table 1-10 and the size and
length of the liquid tubing.
Amount of additional refrigerant charge (g) (Twin, Triple, Double-Twin)
Do not remove refrigerant from the system, even if the result of the calculation is negative.
Additional refrigerant amount (g) = Additional refrigerant for main tubing (g) + Additional refrigerant for distribution tubing (g)
*1
In case of twin connection, 25 type of outdoor unit is 400 g.
(Use with the current refrigerant charge.)
(a) Actual length (m) of main tubing (ø9.52)
(b) Total length of distribution tubing (ø9.52)
(c) Total length of distribution tubing (ø6.35)
Example
● Sample tubing lengths
L = 35 m 1 = 5 m
L1 = 10 m 2 = 5 m
L2 = 5 m 3 = 5 m
4 = 10 m
● Find the liquid tube size from Table 1-10.
L : ø9.52 (48 type)
L1 : ø9.52 (Total type capacity of indoor unit 24)
L2 : ø9.52 (Total type capacity of indoor unit 24)
1 – 4 : ø6.35
● The amount of additional on-site refrigerant charge is found by
subtracting the outdoor unit charge-less refrigerant amount from the
total charge amount for all tube sizes.
ø9.52 → L
: 35 m
ø9.52 → L1 + L2
: (10 + 5) m
ø6.35 → 1 – 4 : (5 + 5 + 5 + 10) m × 20 g / m =
Outdoor unit charge-less refrigerant amount
● The amount of additional on-site refrigerant charge is 1,300 g.
Note: For type 18, the additional refrigerant charge for tubing length (d)
of 30 to 40 m is the following:
Additional refrigerant amount (g) = 20X (d) – 600
Models SPW-C256VH
SPW-C256VH8
9.52 (3/8)
mm (in.) 15.88 (5/8)
(m) 50
*2
30
(m)
15
(m)
3 – 20
(m)
(g/m) 40 *1
(kg) 1.7
Main tubing (L)
25 – 60
ø15.88
ø9.52
40 g
– Outdoor unit charge-less refrigerant amount (g)
= 40X (a) + 40X (b) + 20X (c) – 1200
× 40 g / m = 1400
× 40 g / m =
Total
SPW-C366VH SPW-C486VH
SPW-C366VH8 SPW-C486VH8
9.52 (3/8) 9.52 (3/8)
15.88 (5/8) 15.88 (5/8)
50
30
15
5 – 30
40 *1
2.6
Double-Twin distribution tube (L1, L2)
Total type capacity of indoor unit connected after
the branch
25
ø15.88
ø9.52
40 g
*1
(36, 48 types)
Refrigerant charge per 1 m of actual length = 40 g/m (25 – 60 types)
Refrigerant charge per 1 m of actual length = 40 g/m
Refrigerant charge per 1 m of actual length = 20 g/m
Outdoor unit
1
600
500
–1200
+1300
10
SPW-C606VH8
9.52 (3/8)
15.88 (5/8)
50
50
30
30
15
15
5 – 30
5 – 30
1
40 *
40 *1
2.75
2.75
Indoor unit connection tube
25 – 60
ø15.88
L
L1
2
Indoor unit (12 type × 4)
( 1, 2, 3, 4)
12 – 18
ø12.7
ø9.52 ø6.35
40 g 20 g
L2
4
3