Strainer Installation - LG ARNH963K2A2 Installation Manual

rouGHING-IN
Water Piping

strainer Installation

• Be sure to thoroughly flush the water circuit. Continually check and
clean strainers as necessary.
• Continue flushing period until water circuit strainers remain clean.
The guidelines below apply to both models of the Hydro Kit. Refer to
Figure 20.
1. Install the strainer provided with the Hydro Kit.
2. Check the strainer direction and install on the inlet side of the
heat exchanger.
3. Treat threads with joint compound or wrap the pipe threads with
Teflon tape as needed.
4. Access port must be installed downward within 45 degrees of the
vertical plane.
Hydro Kit Circuit 3-way domestic Water diverting Valve - Space Heating (or
Cooling (K2 only)
Refer to valve manufacturer's installation instructions.
Hydro Kit Circuit 2-way Isolation Valve (K2 only) - In-floor Heating
Refer to valve manufacturer's installation instructions.
Solar Heating Kit 3-way diverting Valve (K2 only) - domestic Water Tank
Heating
Refer to valve manufacturer's installation instructions.
freeze Protection flow Switch (optional)
Flow switch should be rated for 208-230V and be normally closed.
Flow switch will perform as the first protection device when heated water is not supplied. If
the required water level is not present after installing the flow switch, the water source unit will
display a cH24 error code and will stop operating.
When setting the flow switch, it is recommended to use the default set value of the water
source unit to satisfy the minimum flow rate.
• Minimum flow rate range is 50%; Reference flow rate: 3-ton - 10.6 gpm, 4-ton - 13.2 gpm, 4.4-ton - 15.9 gpm.
Select a flow switch following the pressure specification of the water supply system.
• If the set value does not satisfy the minimum flow rate, or if the set value is changed by the user arbitrarily, it can result in perfor-
mance deterioration or system failure.
• If the water source unit operates with a hard water supply, the heat exchanger can be damaged or system failure can occur.
• If the water source unit displays a CH24 or CH180 error code, it is possible that the interior of the plate-type heat exchanger is
partially frozen. If this occurs, resolve the partial freezing issue and then operate the water source unit again. (Causes of partial
freezing: Insufficient heat water flow rate, water not supplied, insufficient coolant, foreign particles inside plate-type heat exchanger.)
Valve orientation
Refer to valve manufacturer's installation instructions.
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FLOW
Front
Figure 20: Strainer Installation
Figure 21: Flow Switch Schematic
Water In
Strainer
Side
Cover
Micro-switch
Adjustment screw
Vibration plate
Bellows
1 inch or
3/4 inch
socket
Pad