LG PQNUD1S40 Owners & Installation Manual page 17

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When connected to RS-485 type wattmeter

• Interlock function with RS-485 type wattmeter is available only for EHP products.

POWER

CAUTION

1. Please read the manual carefully, before using the product.

2. The installation requires expert skills, and it should be installed by the

service or other shops specialized in the installation and recognized by

our company.

3. For all the problems arising after installation by someone who has no

relevant qualiﬁcations, our company will not provide free service

CAUTION

• The color and polarity of the signal wire may be different from the details indicated on the

case depending on the manufacturer of wattmeter. [Black: (-), white: (+)]

• When connecting the 485 communication cable, make sure to check the A, B polarity.

• After connecting the wattmeter, check whether the signal is connected through the LED.

• Power indicator and Pulse Type wattmeter must be installed in same panel.

WHM

SELECT

PQNUD1S40

ODU

WHM CHECK

Central

485-type

control

wattmeter

INSTALLATION METHOD

Remote

reading

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