LG MULTI V HYDRO KIT ARNH963K2A4 Installation Manual page 66

WIRING
Connecting Third-Party Accessories
Connecting the Three-Way Diverting Valve
WARNING
• Always have power off before installing accessories. Failure to do so will cause electric shock, physical injury, and / or death.
• Never operate Hydro Kit outside of the operational parameters as outlined in this manual and the product specifications. Failure to do
so will cause electric shock, physical injury, and / or death.
• Never touch wiring or install accessories with wet hands. To do so will cause bodily injury or death.
• Never operate Hydro Kit outside of the operational parameters as outlined in this manual and the product specifications. Failure to do
so will cause product malfunction and damage.
• See the Pre-Commissioning section for function codes and instructions on accessing the Installer mode that will be needed to set up Hydro
Kit accessories.
A three-way (TB 8, 9, 10) diverting water valve is required to alternate the flow of heated water from the Hydro Kit (or Solar Heating System
Interface; TB 1, 2, 3) between the indirect hot water storage tank, and the water loop serving radiant floor heating. Follow the valve manufac-
turer's instructions for wiring connections at the valve.
Table 23:
Type
SPDT Three-Wire (1)
1. SPDT = Single Pole Double Throw. Three wires consist of Live (for selecting
Flow A), Live 1 (for selecting Flow B), and Neutral (for common).
2. Flow A = Water flow from the Hydro Kit unit to domestic water tank.
3. Flow B = Water flow from the Hydro Kit unit to the floor water circuit.
1. Follow manufacturer's instructions for terminating wires at the valve.
2. Remove front panel and control box cover off of the Hydro Kit.
3. Locate terminal block and connect wires as shown in the figures at
right.
• For three-way diverting valve water tank heating applications, power is to
be supplied to wire (W) and wire (N).
• For three-way diverting valve floor heating applications, power is to be
supplied to wire (U) and wire (N).
4. Re-install the control box cover and front panel.
Before the system is fully functioning, check the flow direction and for noise
or water piping vibration while the three-way valve is operating.
1. Flow direction.
• Water must flow from water outlet of the Hydro Kit to the domestic tank
water inlet when domestic tank heating is selected.
• To verify the flow direction, check the temperatures at the water outlet of
the Hydro Kit and water inlet of the domestic water tank.
• If correctly wired, these temperatures must be nearly identical if water pip-
ing insulation is installed properly.
2. Noise or water pipe vibration when the three-way valve is operating.
• Noise or vibration can occur from surging or the cavitation effect.
• Check if the water circuit (both floor and water tank applications) has
enough water. If not, add more water to support the application.
• A valve that operates quickly yields noise and vibration. An appropriate
valve operating time is between sixty (60) and ninety (90) seconds.
66
Power
Select "Flow A" Between "Flow A" and "Flow B" (2)
1~ 230 V
Select "Flow B" Between "Flow A" and "Flow B" (3)
Due to our policy of continuous product innovation, some specifications may change without notification.
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Operating Mode
Figure 65: Three-Way Valve Terminal Connections.
Wire to Terminals 8 to 10
Figure 66:
Connections.
Three-Way Valve
(A)
8 9 10
L L1 N
BR WH BL
(W) (U) (N)
Three-Way Valve
(W): Live signal (Water tank heating) from PCB to three-way valve.
(U): Live signal (Floor heating) from PCB to three-way valve.
(N): Neutral signal from PCB to three-way valve.
Supported
Yes
Yes
Three-Way Valve