Wire the Indoor Unit for Wall-Mounted SystemsUpdated 17 days ago
Introduction
This article explains how to connect the electrical cables and signal cable to wall-mounted indoor units. This is the third step in the installation process for all wall-mounted indoor units.
This article is for the following systems:
- Diamante Essenza High-Wall (WYT-17)
- Diamante Pro High-Wall (WYT-20)
- Quantum Ultra High-Wall (WYT-24)
- Quantum Hyperformance High-Wall (WYT-25)
- Quantum Fresh High-Wall (WYT-FA)
Electrical Connections
1. Lift the indoor unit's front panel.
2. Remove the cover as indicated in the illustrations.
Diamante Essenza High-Wall, Diamante Pro High-Wall, Quantum Ultra High-Wall, and Quantum Hyperformance High-Wall Systems
Quantum Fresh High-Wall
3. Consult the circuit diagram affixed to the electrical cover.
4. Connect the cables to the wiring terminal by following the numbering. Use wire gauge suitable for the electrical power input. Refer to the Cable Wire Specifications section below for more information.
Notes
- Consult the nameplate on the system for detailed electrical specifications.
- 115V systems take a single-pole breaker for the main circuit panel.
- 230V systems require a double-pole breaker (tandem-type will not work).
Connect the Signal Cable
The indoor unit has three terminals (1, 2, 3) and a ground terminal (g). It is vital that the colors and numbers between the indoor and outdoor units match for each terminal. The color selection does not matter as much as matching number to number does. Do not mix up the wires between each end.
Connect the wires in accordance with the wiring diagrams, then verify that all wire strands are fully inserted and securely clamped at the terminals. All connections must be tight and free of looseness.
Consult the diagram affixed to the indoor and outdoor units respectively for specific wiring instructions.
Cable Wire Specifications
| Diamante Essenza High-Wall | 12K/115V | 12K/230V | 18K | 24K | 36K | |
| Sectional Area (AWG) | ||||||
Power Supply Cable | N(L2) | 12 AWG | 12 AWG | 12 AWG | 12 AWG | 12 AWG |
| L(L1) | ||||||
 | ||||||
| Connection Cable for Communication Between Indoor & Outdoor Units | 3(L) | 16 AWG | 16 AWG | 16 AWG | 16 AWG | 16 AWG |
| 2(N) | ||||||
| 1(S) | ||||||
 | ||||||
| Diamante Pro High-Wall | 9K/12K (115V) | 9K/12K (230V) | 18K | 24K | 30K/36K | |
| Sectional Area (AWG) | ||||||
Power Supply Cable | N(L2) | 12 AWG | 14 AWG | 12 AWG | 12 AWG | 10 AWG |
| L(L1) | ||||||
| ||||||
| Connection Cable for Communication Between Indoor & Outdoor Units | 3(L) | 16 AWG | 16 AWG | 16 AWG | 16 AWG | 16 AWG |
| 2(N) | ||||||
| 1(S) | ||||||
| ||||||
| Quantum Ultra High-Wall | 9K/12K (115V) | 9K/12K (230V) | 18K | 24K | |
| Sectional Area (AWG) | |||||
Power Supply Cable | N(L2) | 12 AWG | 14 AWG | 12 AWG | 12 AWG |
| L(L1) | |||||
| |||||
| Connection Cable for Communication Between Indoor & Outdoor Units | 3(L) | 16 AWG | 16 AWG | 16 AWG | 16 AWG |
| 2(N) | |||||
| 1(S) | |||||
| |||||
| Quantum Hyperformance High-Wall | 9K | 12K | 18K | 24K | |
| Sectional Area (AWG) | |||||
Power Supply Cable | L2 | 14 AWG | 12 AWG | 10 AWG | 10 AWG |
| L1 | |||||
| |||||
| Connection Cable for Communication Between Indoor & Outdoor Units | 3(L) | 16 AWG | 16 AWG | 16 AWG | 16 AWG |
| 2(N) | |||||
| 1(S) | |||||
| |||||
| Quantum Fresh High-Wall | 12K/230V | |
| Sectional Area (AWG) | ||
Power Supply Cable | N(L2) | 14 AWG |
| L(L1) | ||
| ||
| Connection Cable for Communication Between Indoor & Outdoor Units | 3(L) | 16 AWG |
| 2(N) | ||
| 1(S) | ||
| ||