LG Hydro Kit - Page 37

Accessories Installation
Hydro Kit Installation Manual 37
ENGLISH
• Connect 3way valve, if both floor heating and hot water is used.
• Connect the separately purchased thermostat.
• Dry contact is an accessory supplied by LG and installed by referring to the attached installation
manual.
• 3way valve, thermostat and pump are external parts for installation, which are not supplied by LG.
After checking each part carefully, install external parts respectively.
• Connect the cable of each accessory to the terminal block of the control box in the Hydro Kit.
• Check the label attached on the terminal block to prevent wrong connection.
• Use the pump of 220 ~ 240 voltage and maximum operation current of 3 A or less.
• Select a suitable relay for pump capacity when connecting the pump to the unit.
WARNING
Install the unit after turning off the main power.
Do not connect the products out of range specified in the manual.
Do not work with wet hand.
!
Name Port Electrical Spec Function
3way valve
(Hydro kit)
Terminal Block
- Mid Temp : #8 / #9 / #10
- High Temp : #4 / #5 / #6
230V(output)
- Live : #8 / #9 (#4/ #5)
- Neutral : #10 (#6)
Change the water flow to Water tank or
Floor circuit
2way valve
(Hydro kit)
Terminal Block
- Mid Temp : #14 / #15 / #16
230V(output)
- Live : #14 / #15
- Neutral : #16
Change water flow to FCU or Floor Circuit
Pump
(Hydro kit)
Terminal Block
- Mid Temp : #11 / #12
- High Temp : #1 / #2
230V(output)
- Live : #11 (#1)
- Neutral : #12 (#2)
Water circulation
3way valve
(Solar)
Terminal Block
- Mid Temp : #1 / #2 / #3
230V (output)
- Live : #1 / #2
- Neutral : #3
Change the water flow to
Solar or Water tank circuit
Water Pump
(Solar)
Terminal Block
- Mid Temp : #4 / #5
230V(output)
- Live : #4
- Neutral : #5
Water circulation for solar water piping
system
Thermostat
Terminal Block
- Mid Temp : #17 / #18 / #19 / #20
- High Temp : #7 / #8 / #10
230V or 24V
- Live : #17 (#7)
- Neutral : #18 (#8)
- Signal : #19 / #20 (#10)
Operating with Thermostat
(Mechanical)
Water Tank
Temperature Sensor
CN_TH4 NTC 5 kΩ, 12 m Detect water temperature in water tank
Remote Room
Temperature Sensor
(PQRSTA0)
CN_ROOM NTC 10 kΩ, 15 m Detect Air temperature in Room
Wi-Fi
(PWFMDD200)
CN_WF DC 12 V, 5 m Control with Mobile app
External on/off Control CN_EXT Non-Voltage (Digital input) Operation on/off with external device.
Dry Contact CN_CC Non-Voltage (input) Dry contact connection point
Refrigerant Leak
detection
CN_LEAK_ROOM2 DC 5 V, 35 mA, 10 m Detect refrigerant leakage
Smart Grid TB SG2 , TB SG1 220 ~ 240 V AC [Input]
External pump TB EXT_PUMP Non-Voltage [output] / 1 A Interlock with external pump by relay