LG Hydro Kit ARNH10GK2A4 Installation Manual page 23

Precaution when connecting Heat Recovery systems
PRHR042 / PRHR032 / PRHR022
Ø15.88
Gas pipe
Ø9.52
Liquid pipe
Welding type
DIP S/W setting
Not control
No.1, 2 Valve
Control
No.2, 3 Valve
Control
No.3, 4 Valve
Control
No.1, 2 Valve
/
No.3, 4 Valve
Control
Pipe searching process
1. When Pipe searching process is performed,
- Use 'Mode 1' if water temperature is higher than 30℃(86℉)
- Use 'Mode 2' if water temperature is lower than 30℃(86℉)
2. When Pipe searching process is not performed,
- Check whether 'CH14' error occurs in the Hydro Kit.
For more detailed information, refer to the installation manual of Heat Recovery Unit.
- One connection of refrigerant pipe for HR unit is
insufficient for the flow of refrigerant. Join two pipes with a
branch pipe when connecting the Hydro Kit (Up to
16kW (54kBut/h) capacity model: 10HP).
- The pipe number of the connected gas pipe and liquid
pipe must be same.
- Flow water in the Hydro Kit when pipe-searching
process is performed.
- Pipe-searching process error may occur if the pipe
Hydro kit
temperature does not increase.
Ø22.2
Gas pipe
- It is recommended that Hydro Kit (10HP model) is
Ø9.52
Liquid pipe
connected to No.1 valve and No.2 valve.
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
Example
Indoor Unit
Indoor Unit
Indoor Unit
Indoor Unit
Indoor Unit
Indoor Unit
Hydro Kit
Indoor Unit
Hydro Kit
Indoor Unit
Hydro Kit
Indoor Unit
Indoor Unit
Hydro Kit
(When two Hydro Kit are installed)
Hydro Kit
Hydro Kit Installation Manual 23
Installation