Vrf Additional Refrigerant Charge Calculations - Toshiba RAS-107SKV-E5 Technical Handbook

HP SMMS
4
MCY-MAP0401HT
5
MCY-MAP0501HT
6
MCY-MAP0601HT
5
MAP0501HT8-E
6
MAP0601HT8-E
8
MAP0801HT8-E
10
MAP1001HT8-E
12
MAP1201HT8-E
14
AP1401HT8-E
16
AP1601HT8-E
18
AP1801HT8-E
20
AP2001HT8-E
22
AP2201HT8-E
22
AP2211HT8-E
24
AP2401HT8-E
24
AP2411HT8-E
26
AP2601HT8-E
28
AP2801HT8-E
30
AP3001HT8-E
32
AP3201HT8-E
32
AP3211HT8-E
34
AP3401HT8-E
34
AP3411HT8-E
36
AP3601HT8-E
36
AP3611HT8-E
38
AP3801HT8-E
40
AP4001HT8-E
42
AP4201HT8-E
44
AP4401HT8-E
46
AP4601HT8-E
48
AP4801HT8-E
Page 20 of 78

VRF Additional Refrigerant Charge Calculations

Base Charge kg
7.2
7.2
7.2
8.5
8.5
12.5
12.5
12.5
21.0
25.0
25.0
25.0
33.5
25.0
37.5
25.0
37.5
37.5
37.5
50.0
37.5
50.0
37.5
50.0
37.5
50.0
50.0
50.0
50.0
50.0
50.0
Calculation of Additional Refrigerant Charge Mini SMMS
Liquid Line Pipe Diameter Ø
1/4 - 6.4
3/8 - 9.5
Calculation of Additional Refrigerant Charge SMMS
Liquid Line Pipe Diameter Ø
1/4 - 6.4
3/8 - 9.5
1/2 - 12.7
5/8 - 15.9
3/4 - 19.1
7/8 - 22.2
Additional refrigerant
charge amount at site
Note: if a negative result occurs the additonal refrigerant amount is 0 kg
*** No additional refrigerant charge or change to Factory charge is required ***
Total System Charge = Base Charge + Additional Refrigerant Charge + HP Correction Factor
Mini SMMS
Condenser Combinations
HP
1
4 4
5 5
6 6
5 5
6 6
8 8
10 10
12 12
14 8
16 8
18 10
20 10
22 8
22 12
24 8
24 12
26 10
28 10
30 10
32 8
32 12
34 10
34 12
36 10
36 12
38 10
40 10
42 12
44 12
46 12
48 12
Refrigerant
0.0250 x
0.0550 x
Additional amount of refrigerant =
Refrigerant
0.025 x
0.055 x
0.105 x
0.160 x
0.250 x
0.350 x
Additional amount of refrigerant =
Additional Refrigerant Charge Amount kg/m
= x
Real Length of Liquid Line m
Trim Charge
SMMS
2 3 4
6
8
8
10
8 6
10
8 8
12
8 8
10 8
10 10
8 8 8
10 10
8 8 8
12 10
10 8 8
12 12
10 10 8
10 10 10
10 10 10
12 10 10
12 12 10
12 12 12
Length Additional Amount of
= kg
= kg
kg
Length Additional Amount of
= kg
= kg
= kg
= kg
= kg
= kg
kg
+
HP Correction Factor kg
Correction
Factor kg
-0.8
-0.4
0
0
0
1.5
2.5
3.5
0
0
0
3
0
5
-4
7
-4
-2
0
-6
1
-6
3
-6
4
-6
-5
-4
-2
0
2