LG ARNH963K2A2 Installation Manual page 50

fINIsH uP
Accessory Installation
Hydro Kit thermostats (optional accessories)
Follow Table 10 below to assist with which thermostat options are available for use with each Hydro Kit. Refer to the added information below
the table regarding the Thermostat options.
Table 10: Hydro Kit Thermostats
Type
Mechanical (1)
Electrical (2)
• Heating/Cooling Thermostat models must have "Mode Selection" feature to determine operation mode.
• Thermostat must be a manual changeover design and be able to accept separate heating and cooling temperature setpoints.
• Do not use the thermostat terminals to power external loads such as contactors, relays or any other type of control or electrical device. Doing
so will damage the unit control board.
• Cooling and heating signals must be sent immediately when the temperature condition is met. There can be no delay in trigger timing.
1. Use 1~230 V Thermostat for installation.
2. Some electro-mechanical thermostats have a time delay to protect the compressor, resulting in time lag between mode changes. Users
should refer to the Thermostat Installation Manual for any workarounds.
3. Setting temperature ranges through direct thermostat can be different from direct unit control. The heating set temperature should be
chosen within the setting temperature range of the unit.
Follow the procedure below to connect the thermostat to the Hydro
Kits.
Refer back to Figure 36 and Figure 37 for the Terminal Block con-
nection locations.
Set the DIP switch #8 to the oN Position, otherwise the Hydro Kit will
not recognize the thermostat. The Hydro Kit Controller will display the
Thermostat icon and temperature control adjustment via the Hydro Kit
Controller will be disabled.
1. Disconnect power to the Hydro Kit.
2. Remove front cover of the unit and open the control box.
3. Identify the power specification of the thermostat to install.
• If installing a 208-230 V proceed to step 6.
• If installing a 1~24 V proceed to step 4.
4. Locate connecting cable A and C and disconnect (Figure 49).
5. Connect cable B and C.
6. For Hydro Kit Medium Temperature (K2) Thermostat locate the
terminal block in the Hydro Kit and connect the control wiring
from the thermostat as shown in Figure 36, terminals 17-20.
7. For Hydro Kit High Temperature, locate terminal block and con-
nect wire as shown in Figure 37, terminals 7-10.
50
Power
1~230 V
1~24 V
1~230 V
1~24 V
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG Life's Good" is a registered trademark of LG Corp.
Hydro Kit Unit
High Temperature Only (3)
Medium Temperature (4)
High Temperature Only (3)
Medium Temperature (4)
High Temperature Only (3)
Medium Temperature (4)
High Temperature Only (3)
Medium Temperature (4)
Figure 49: Control Box Cable Connections for Thermostat