How To Install Sanitary Water Tank Kit - LG THERMA V Air-to-Water Heat Pump Installation Manual

Accessories Installation

How to Install Sanitary Water Tank Kit

Follow below procedures Step 1 ~ Step 6.
Step 1. Find a relay contactor and ELB(MCCB) in the kit. Bolt
them into control box. (symbol Ⓐ at picture)
Step 2. Connect ʻCN_B/HEAT(A)ʼ (White Connector) of the
indoor unit PCB with relay contact using included cable
(symbol Ⓑ at the picture). Connect relay contactor port
no. 0 and 1.
Step 3. Connect relay contactor port no. 2 and 6 with
ELB(MCCB) port no. 2 and 4. (symbol Ⓒ at the
picture).
Check Polarity
• Connect relay contact port no. 2 to ELB(MCCB) port no. 2
• Connect relay contact port no. 6 to ELB(MCCB) port no. 4
Step 4. Connect relay contactor port no. 4 and 8 with terminal
block 1 port 6 and 7. (symbol Ⓓ at the picture).
Check Polarity
• Connect relay contact port no. 4 to terminal block 1 port 6
• Connect relay contact port no. 8 to terminal block 1 port 7
Step 5. 1Ø Electric Heater
' Connect ELB(MCCB) port no. 1 and 3 with terminal
block 3 port 3 and 4. (symbol Ⓔ at the picture).
3Ø Electric Heater
' Connect ELB(MCCB) port no. 1 and 3 with terminal
block 3 port 1 and 2. (symbol Ⓔ at the picture).
Check Polarity
1Ø Electric Heater
• Connect ELB(MCCB) port no. 1 to terminal block 3 port 3
• Connect ELB(MCCB) port no. 3 to terminal block 3 port 4
3Ø Electric Heater
• Connect ELB(MCCB) port no. 1 to terminal block 3 port 1
• Connect ELB(MCCB) port no. 3 to terminal block 3 port 2
2
4
6
8
port no. assignment
Note:
Some models are using MCCB instead of ELB
64 Air-to-Water Heat Pump
1
0
1
2
Relay contactor ELB(MCCB) port no.
assignment
3
4
B
A
C D
A
E
1Ø Electric Heater
A
D
A
E
3Ø Electric Heater
C