LG MULTI V Service Manual page 57

2) Selection of the model of the HR unit
(For 2 branches)
Initial
Setting
1 branches
Connected
2 branches
Connected
3 branches
Connected
4 branches
Connected
h Each model is shipped with the switches No.2 and No.3 pre-adjusted as above in the factory.
WARNING
• If you want to use a PRHR022(A) for 2 branches HR unit after closing the 3rd pipes, set the dip switch for 2 branches HR
unit.
• If you want to use a PRHR032(A) for 3 branches HR unit after closing the 4th pipes, set the dip switch for 3 branches HR
unit.
• If you want to use a PRHR042(A) for 2 branches HR unit after closing the 3rd and 4th pipes, set the dip switch for 2
branches HR unit.
• The unused port must be closed with a copper cap, not with a plastic cap.
2
1
PRHR022(A)
3
2
1
(For 3 branches)
PRHR032(A)
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HR Unit PCB
4
3
1 2
(For 4 branches)
PRHR042(A)