Lg Heat Pump To Furnace / A-Coil Wiring Diagram - LG LUU180HV Sales Manual

LG HEAT PUMP TO FURNACE / A-COIL WIRING
DIAGRAM
Heat Pump with Two-Stage Thermostats
S – Indoor and Outdoor Wired Sensors
R, C:
• 24 Voltage Supply for Thermostat and
Communication Kit (Heat Pump)
• 24 VAC Power From the Gas Furnace (R,C)
should be connected to both Heat Pump R,C)
and Thermostat (R,C)
W (Heat Pump) - Gas Furnace Operation Signal
when Heat Pump Enters Defrost Mode (If W
is connected to W1 at Gas Furnace; If W is
connected to W2 at Gas Furnace)
W1 (Gas Furnace) - Heating Stage 1 (75% of
Stage 2)
W2 (Gas Furnace) - Heating Stage 2 (100% per
specifications listed in manufacturer's manual)
Y1 – Compressor Stage 1 (Cooling; Cooling
Target Pressure: 114 psi [780 kPa])
Y / Y2 – Compressor Stage 2 (Cooling; Cooling
Target Pressure: 102 psi [700 kPa])
G (Gas Furnace): Fan Operation at Gas
Furnace
O/B – Reversing Valve for Heat Pump Systems
For Nortek A-Coil and gas furnace specifications, see Nortek
technical materials at www.nortekhvac.com.
WARNING
All power wiring and communication cable installation must be performed by trained service providers working in accordance with local, state, and
National Electrical Code (NEC) / UL / ETL federal regulations related to electrical equipment and wiring, and following the manufacturer product
diagrams, requirements, and instructions in this manual. Failure to do so will lead to electric shock which can cause physical injury or death.
18 | PERFORMANCE DATA
Figure 8: Detailed Two-Stage Wiring Diagram.
To Power Supply
(208-230V / 60Hz / 1 Phase)
1(L1) 2 or N
(L2)
Terminal Block for Heat Pump
Power Supply
LG Heat Pump Outdoor Unit
24V Communication Kit Terminal Block
(Factory-Installed in the LG Outdoor Unit)
R C W Y1 Y / Y2 O / B
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" is a registered trademark of LG Corp.
(115V / 60Hz / 1 Phase)
A-Coil
(Nortek)
Gas Furnace
Dual-Fuel Function)
(Nortek)
24V Communication
Terminal Block in Gas Furnace
Outside Air Sensor
(Required)
To Power Supply
Terminal Block for
Gas Furnace
Power Supply
Third-Party
Thermostat
(Needs to Support