Main Pump Connection; Water Tank Temperature Sensor Connection - LG AHNW166T0 Installation Manual

Accessories Installation

Main Pump Connection

Pump
(main)
1 2
L N
Relay
Pump
CAUTION
• Make sure to supply external power with the pump.

Water tank temperature sensor Connection

CN-TH4
Housing
Water tank
thermistor
CAUTION
• If water tank temperature sensor is not connected, error will occur.
(CH08) Exclude the case of using floor heating.
44
• Select the suitable pump by referring to the flow rate table with water tem-
perature difference between the entrance and the exit.
*It is recommended that the flow rate is 23LPM.
• Use the pump with enough capacity to guarantee the loss of entire water
pressure and to supply the Indoor Unit with water.
• Select a suitable relay for pump capacity when connecting the pump to the
unit.
• Connect the relay to the terminal block 11 and 12 of the control box.
• Connect sensor housing to PCB'CN-TH4' connector (red).