LG PPWRDB000 Installation And Owner's Manual page 16

INSTALLATION METHOD
16
Connection of wattmeter, gas meter and communication cable (GHP products)
When connecting the pulse-type wattmeter / gas meter
! 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 : port 1, gas meter : port 2)
Pulse type
wattmeter
POWER
PPWRDB000
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
Outdoor Unit
(Central controller)
Pulse type
gas meter
WHM
MENU
SELECT
ODU WHM CHECK