Terminating Group Controlled Hydro Kits - LG ARNH963K2A2 Installation Manual

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Accessory Installation

terminating Group controlled Hydro Kits

If any of the Hydro Kits were specified to operate in unison, create a group control communications circuit between the Hydro Kits using
optional group control cable kits (purchased separately (PZCWRCG3) consisting of three (3) cables as follows:
— One pigtail cable
— One Y-cable
— One 39 foot long extension cable segment
• Up to 16 Hydro Kits can be members of a group sharing control input from a single Hydro Kit controller.
• Each Hydro Kit group must be connected to the same outdoor unit.
• At the last Hydro Kit Slave unit in the group, a pigtail cable is not required.
• Hydro Kits within the same group must have the same DIP switch settings. The only DIP switch that can differ is the group control setting
switch, where one Hydro Kit will be the Master and the remaining Hydro Kits will be Slaves.
Procedure (Termination)
1. Before proceeding with group control cable terminations, verify power is off at all Hydro Kits effected.
2. Choose one Hydro kit of the group and designate it as the "Master" unit of the group.
— Master designation is achieved by setting DIP switch #1 in the OFF position. Hydro Kits designated as Slave units will need DIP Switch
#1 placed in the ON position.
3. If not already recorded, record the "Master" status of this unit and identify all other units in the group as "Slaves". Record the assigned
identity of each on the "Pre-Commissioning Device Configuration Worksheet" located at the end of this manual.
4. Starting with the Hydro Kit Master unit, plug in the male end of the pigtail cable into the cN-reMo socket.
5. Plug the male end of the extension cable coming from the previous Hydro Kit unit into the cN-reMo socket. Refer back to Figure 36
and Figure 37 for specific location of the cN-reMo sockets on each Hydro Kit chassis' PCB.
6. Plug the Y-cable into the pigtail at each Hydro Kit; except for the last Slave Hydro Kit in the group, at which no Y-cable cable will be
needed (see Figure 44).
7. Connect two extension cable segments to each Y-cable, except for the Y-cable connected to the Master Hydro Kit.
8. At the Master Hydro Kit, connect one extension cable and the communications cable from the Controller to the Y- cable.
Master
Hydro Kit
Controller
46
Slave
Figure 44: Wiring Schematic - Hydro Kit Controller to Multiple Hydro Kits
Due to our policy of continuous product innovation, some specifications may change without notification.
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Slave
Only Connect Serial Signal and GND Lines
Between Slave Hydo Kits
Slave
GND
Signal
12 V