LG Hydro Kit ARNH04GK2A4, Installation Manual, Page: 23 / 63

Hydro Kit
Installation Manual
23
ENGLISH
Gas pipe
Ø15.88
Liquid pipe
Ø9.52
Welding type
Hydro kit
Gas pipe Ø22.2
Liquid pipe Ø9.52
Precaution when connecting Heat Recovery systems
PRHR042 / PRHR032 / PRHR022
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 .
- 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
temperature does not increase.
- It is recommended that
Hydro Kit
(10HP model) is
connected to No.1 valve and No.2 valve.
No.1, 2 Valve
/
No.3, 4 Valve
Control
No.3, 4 Valve
Control
DIP S/W setting
No.2, 3 Valve
Control
No.1, 2 Valve
Control
Not control
Example
Indoor Unit
Indoor Unit
Hydro Kit
Indoor Unit
Indoor Unit
Hydro Kit
Indoor Unit
Indoor Unit
Hydro Kit
(When two Hydro Kit are installed)
Hydro Kit
Hydro Kit
Indoor Unit
Indoor Unit
Indoor Unit
Indoor Unit
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
For more detailed information, refer to the installation manual of Heat Recovery Unit.
Installation