Refrigerant Piping Work - Hisense HCHS-N06X Installation Manual

5.2 Refrigerant Piping Work
Provide the refrigerant pipe in the field.
Make sure that the refrigerant pipe is connected to the same refrigerant cycle unit.
(1) Position of Piping Connection
Service Cover for
Electronic Expansion Valve
214
(8-7/16)
Low Pressure
Gas Pipe Connection
( 19.05(3/4) Flare Nut)
φ
Service Cover for
Electrical Box
High/Low Pressure
Gas Pipe Connection
54
(
φ
(2-1/8)
40
(1-9/16)
151 63(2-1/2)
(5-15/16)
Outdoor Unit Connecting Side
(2) Selecting Piping Size
(a) Select the size for the high/low pressure gas pipe, low pressure gas pipe and gas pipe according to
the table 5.1. The size depends on the indoor unit total capacity connected downstream of the
Switch Box .
(b) In case that the piping size from Table 5.1 and the piping connection size for Switch Box from Table
5.2 are different, use an accessory pipe according to the item 5.2(3).
(c) As for the BRANCH PIPE branch or header branch, refer to Technical Catalog for Outdoor Unit.
Model
HCHS-N06X
HCHS-N10X
T: In case that a branch is located downstream of the Switch Box and also the connected indoor unit capacity is
1.5HP or less, use ɸ15.88 for the gas pipe.
Table 5.2 Piping Connection Size for Switch Box
Model
HCHS-N06X
HCHS-N10X
38
(1-1/2)
(3-1/2)
82
(3-1/4)
15.88(5/8) Flare Nut)
Dimension
Model
HCHS-N06X
HCHS-N10X
Table 5.1 Connected Indoor Unit Capacity and Piping Size
Connected Indoor Low Pressure
Unit Capacity
(HP)
1.5HP or less
1.6 to 4.0
4.1 to 6.0
6.1 to 8.0
8.1 to 10.0
Low Pressure
Gas Pipe Pressure Gas Pipe
(mm)
ɸ19.05
ɸ19.05
Upstream
Low Pressure
Gas Pipe
Switch Box
High/Low Pressure
Gas Pipe
376(14-13/16)
301(11-7/8) 38
(1-1/2)
89
301(11-7/8) B
A
15.88(5/8) 89(3-1/2)
19.05(3/4) 96(3-3/4)
High/Low
Gas Pipe Pressure Gas Pipe
(mm) (mm)
ɸ15.88 ɸ12.7
ɸ15.88 ɸ12.7
ɸ19.05 ɸ15.88
ɸ19.05 ɸ15.88
ɸ22.2 ɸ19.05
High/Low
Gas Pipe
(mm) (mm)
ɸ15.88 ɸ15.88
ɸ15.88 ɸ19.05
BRANCH PIPE
Gas Pipe
Indoor
Unit
11
Electrical Box
(Available for
Both Sides)
111
(4-3/8)
Indoor Unit Connecting Side
B
Gas Pipe
(mm)
ɸ12.7
ɸ15.88
ɸ15.88
ɸ19.05
ɸ22.2
Downstream
Indoor
Unit
Unit: mm(inch)
Gas Pipe Connection
( A Flare Nut)
φ
T