LG Hydro Kit ARNH10GK2A4 Installation Manual page 13

Water cycle
* For the water pipe system, use the closed loop type.
1. For the parts of the water pipe system, use the parts above the design water pressure.
2. For the water pipe, do not use steel pipe.
3. For the drain pipe (1) size, use the same diameter as the product connected or larger.
- Always install a natural drainage so that the drained water does not back flows.
4. To replace the connected device easily, install the union joint (2).
5. Install the service port (3) to clean the heat exchanger at each inlet and outlet of the water pipe.
6. Always install a strainer(4) at the inlet of the water pipe. Do not enter city water into the water
pipe directly during Hydro Kit operation. If the strainer is not installed, component malfunction
of Hydro Kit may occur.
- For the strainer, use one with 50 mesh or above with measurement diameter of 0.4mm or
less. (Exclude other net)
- Always install the strainer on the horizontal pipe.
(When dirt, trash, rusted pieces get into the water pipe system, it can cause problems to the
product by corroding the metallic material.)
7. Install the air vent(5) at the top of the water pipe. If the air vent is not installed at the top of the
water pipe, there would be a lot of bubble in the water pipe. So a plate heat exchanger burst
may happen because of the reduction of water flow rate(CH 14 is displayed in the remote
controller) caused by a lot of bubble in the water pipe.
8. Install a thermometer (6) and pressure gauge (7) at the inlet and outlet of the water pipe.
9. Install the drain valve (8) that can be used for draining the water inside when replacing the part
or providing service.
10. Install the shut-off valve (9) to block the water by closing the valve when replacing the part or
cleaning.
11. Apply insulated treatment on the exterior of the water pipe so that water drops do not form.
12. Install excessive pressure safety valve (10) that meets the design water pressure to prevent unit
or water pipe damage at the pressure increase inside the water pipe system.
13. Install the closed loop water pipe system.
Union joint (2)
Hydro kit
Drain pipe (1)
CAUTION:
Please always make circulate or drain out the water completely when not using it.
On-site installation
air vent (5)
Thermometer (6)
Strainer (4)
P/T service port (3)
Pressure gauge (7)
Shut-off valve (9)
Excessive pressure
safety valve(10)
Drain valve (8)
Hydro Kit Installation Manual 13
Installation
Outlet Water
[Install water tank]
or
[Install floor cooling/heating]
Inlet water