LG MULTI V WATER IV ARWV100DAL4 Installation Manual page 19

Installation of water pipe
1) Water pipe system diagram
• The water pressure resistance of the water pipe system of this product is 1.98MPa
• When the water pipe passes indoors, make sure to execute heat insulation on the pipe so that water drops do not form on
the outer side of the water pipe.
• The size of the drain pipe must be equal to or larger than the diameter of the connecting product.
- Always install a trap so that the drained water does not back flush.
• Always install a strainer (20 Mesh or above) at the entrance of the water pipe. (When sand, trash, rusted pieces get mixed
into the water supply, it can cause problems to the product due to blocking)
- If On/Off valve is applied, by interlocking with outside unit, it can save the energy consumption of pump by blocking the
water supply to the outside unit not operating. Select appropriate valve and install on site if necessary.
• Install a pressure gauge and temperature gauge at the inlet and outlet of the water pipe.
• Flexible joints must be installed not to cause any leakage from the vibration of pipes.
• Install a service port to clean the heat exchanger at the each end of the water inlet and outlet.
• For the components of the water pipe system, always use components above the designed water pressure.
BALL V/V(TYP.)
Flow control valve
Service Port
Flow control valve
On/Off Valve
CAUTION
Do not directly connect the drain outlet to the water pipe outlet.
(It can cause problems to the product.)
2) Water pipe connection
• The water pipe should be the same size of the connection on the product or more.
• If necessary install the insulation material in the water pipe inlet/outlet to prevent water drop, freeze and to save energy.
(Use the above 20mm thickness PE insulation material.)
• Tightly connect the socket to the water pipe refer to below table for recommended specification.
(Too much torque may cause the damage of the facility.)
Air vent
Presssure/Temperature gage
Strainer
Refrigerant piping installation
FLEXIBLE JOINT
SUS(TYP.)(7)
Drain line
Installation Manual 19