Design Technical Manual

Table Of Contents
z
Selection of branch kit
Branch kit
No.
Total cooling
capacity of
downstream indoor
units (kBtu/h)
Model
DX1 - UTP-DX567A
DX2 - UTP-DX567A
BX1 368.0 UTP-BX567A
BX2 332.0 UTP- BX567A
BX3 144.0 UTP-BX180A
AX1 96.0 UTP-AX090A
HD1 56.0 UTR-H0906L
z
Selection of RB unit
RB unit
No.
Total cooling
capacity of
downstream indoor
units (kBtu/h)
Model
RB1 36.0 UTP-RU01BH
RB2 48.0 UTP-RU01BH
RB3 96.0 UTP-RU01CH
RB4
60.0
188.0
(Total)
UTP-RU04BH
36.0
36.0
56.0
z
Selection of pipe size
1) 3pipes
3a 3b 3c 3d 3e 3f 3g 3h 3i 3j 3k
Liquid pipe
in. (mm)
1/2
(12.70)
1/2
(12.70)
1/2
(12.70)
5/8
(15.88)
3/4
(19.05)
3/4
(19.05)
5/8
(15.88)
3/8
(9.52)
1/2
(12.70)
3/8
(9.52)
1/2
(12.70)
Discharge
gas pipe
in. (mm)
3/4
(19.05)
3/4
(19.05)
3/4
(19.05)
7/8
(22.22)
1-1/8
(28.58)
1-1/8
(28.58)
7/8
(22.22)
1/2
(12.70)
3/4
(19.05)
1/2
(12.70)
3/4
(19.05)
Suction gas
pipe
in. (mm)
7/8
(22.22)
7/8
(22.22)
7/8
(22.22)
1-1/8
(28.58)
1-3/8
(34.92)
1-5/8
(41.27)
1-3/8
(*1)
(34.92)
1-1/8
(28.58)
3/4
(19.05)
1-1/8
(28.58)
3/4
(19.05)
7/8
(22.22)
Length ft. (m)
Example
6
(2)
6
(2)
6
(2)
6
(2)
164
(50)
33
(10)
132
(40)
10
(3)
10
(3)
10
(3)
16
(5)
*1: Pipe size "3f" selection : Even though this pipe size might be selected based on downstream
cooling capacity (332.0kBtu/h), This pipe size should not be larger than pipe size "3e". Therefore
select pipe size equal to pipe size "3e".
2) 2pipes
2a 2b 2c 2d 2e 2f 2g 2h 2i 2j
Liquid pipe
in. (mm)
3/8
(9.52)
3/8
(9.52)
1/2
(12.70)
1/2
(12.70)
3/8
(9.52)
3/8
(9.52)
3/8
(9.52)
3/8
(9.52)
3/8
(9.52)
1/4
(6.35)
Gas pipe
in. (mm)
3/4
(19.05)
3/4
(19.05)
7/8
(22.22)
7/8
(22.22)
3/4
(19.05)
3/4
(19.05)
3/4
(19.05)
3/4
(19.05)
3/4
(19.05)
1/2
(12.70)
Length ft. (m)
Example
23
(7)
16
(5)
10
(3)
16
(5)
16
(5)
16
(5)
16
(5)
23
(7)
27
(8)
16
(5)
2k 2l 2m
Liquid pipe
in. (mm)
1/4
(6.35)
1/4
(6.35)
1/4
(6.35)
Gas pipe
in. (mm)
1/2
(12.70)
1/2
(12.70)
1/2
(12.70)
Length ft. (m)
Example
16
(5)
16
(5)
16
(5)
Model Q'ty
UTP-DX567A 2
UTP-BX567A 2
UTP-BX180A 1
UTP-AX090A 1
UTR-H0906L 1
Model Q'ty
UTP-RU01BH 2
UTP-RU01CH 1
UTP-RU04BH 1
- (06 - 55) -
SYSTEM
DESIGN
SYSTEM
DESIGN