LG ARNH08GK3A2 Installation Manual page 19

Precaution when connecting Heat Recovery systems
Ø15.88
Gas pipe
Ø9.52
Liquid pipe
Welding type
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 ʻMode 1ʼ if water temperature is higher than 30℃(86℉)
- Use ʻMode 2ʼ if water temperature is lower than 30℃(86℉)
2. When Pipe searching process is not performed,
- Check whether ʻCH14ʼ error occurs in the Hydro Kit.
*Refer to the installation manual of HR unit
Recaution when connecting to synchronous type outdoor 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: ARNH08GK3A2).
- The pipe number of the connected gas pipe and
liquid pipe must be same.
- Flow water in the Hydro Kit when pipe-search-
Hydro kit
Ø22.2
Gas pipe
ing process is performed.
Ø9.52
Liquid pipe
- Pipe-searching process error may occur if the
pipe temperature does not increase.
- It is recommended that Hydro Kit is connected
to No.1 valve and No.2 valve.
DIP S/W setting Example
Indoor Unit
4
3 Indoor Unit
2
Indoor Unit
1
Indoor Unit
Indoor Unit
4
3
Indoor Unit
2
Hydro kit
1
Indoor Unit
4
3
Hydro kit
2
1
Indoor Unit
4
Hydro kit
3
Indoor Unit
2
1
Indoor Unit
(When two
Hydro Kit are
installed)
4
Hydro kit
3
2
Hydro kit
1
Hydro Kit Installation Manual 19
Installation