LG PQNUD1S41 Installation & Owner's Manual page 18

INSTALLATION METHOD
18
Connection of wattmeter, gas meter and communication cable (GHP products)
When connecting the pulse-type wattmeter / gas meter
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.
• Install the power indicator and the pulse-type wattmeter on the same panel.
• Make sure that the pulse lines of the wattmeter and gas meter are connected to the
correct positions (wattmeter: 1-4 ports; gas meter: 5-8 ports).
Pulse type Pulse type
wattmeter wattmeter
WHM
MENU
SELECT
PQNUD1S40
ODU WHM CHECK
Central
controller
Pulse-type Pulse-type
Gas meter Gas meter