LG MULTIV III Service Manual page 22

HR Unit PCB
3) Selection of the model of the HR unit
PRHR021/PRHR021A
Initial
Setting
1 branches
Connected
2 branches
Connected
3 branches
Connected
4 branches
Connected
❈ 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 PRHR031/PRHR031A 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 PRHR041/PRHR041A 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 PRHR041/PRHR041A 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.
Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2
1
(For 2 branches)
3
2
1
(For 3 branches)
PRHR031/PRHR031A
- 22 -
4
3
1 2
(For 4 branches)
PRHR041/PRHR041A
LGE Internal Use Only