Airthereal 14KW Water Heater Installation Guide
Quick installation guide for Airthereal 14KW tankless water heaters, covering electrical requirements, safety warnings, and wiring procedures.
Table of contents
Quick guide from the manual
This document provides essential installation requirements for the Airthereal 14KW tankless water heater. Installation must be performed by a qualified professional in accordance with all national, state, provincial, and local electrical and plumbing codes.
Safety and Warnings
Warning: Under no circumstances should you attempt to clean, install, inspect, repair, disassemble, or otherwise service this water heater without first shutting off all power to the unit directly at the circuit breaker box. Failure to follow this instruction can result in serious bodily injury or death.
Electrical Requirements
Before installation, confirm that your breaker panel meets the following specifications:
- Voltage: 240V (not 120V)
- Circuit Breaker: 1x 60A Double Pole Circuit Breaker
- Wiring: 1x 6AWG/2 Wire
If you do not have the correct infrastructure, you must have a professional install a new outlet, breaker, and/or wiring.
Installation Steps

- Turn off the power at the main breaker panel.
- Take each wire pair and connect them to one breaker. Ensure that each breaker is connected with one black wire (L2) and one red wire (L1).
- Use a suitable wire gauge that meets all applicable electrical codes for the size of the breakers used. Run the correct sets of wire from the main breaker panel to the tankless water heater.
- A separate ground conductor is required.
- Double-check the electrical connections to ensure they are correct and that all wire connections are tight and secure.
Manufacturer information
Airthereal
Practical help
Common problems
Ensure the unit is connected to a 240V supply; it is not compatible with 120V.
If your panel does not support a 60A double pole breaker and 6AWG wiring, you must hire a professional to upgrade your electrical system.
Before use
- Verify the breaker panel supports a 60A double pole circuit breaker.
- Ensure 6AWG/2 wire is available for the installation.
- Confirm access to a voltage tester to verify power is off.
- Ensure a qualified professional is available for the installation.
- Check that all electrical connections are tight and secure before turning power back on.
Specs in practice
- 60A Double Pole Circuit Breaker
- The specific type of breaker required to handle the unit's power load.
Images and diagrams
- The manual provides visual references for using a voltage tester, screwdrivers, pliers, and wire strippers.
- Images illustrate the correct way to toggle the circuit breaker and identify L1 (red) and L2 (black) wire connections.
Model compatibility
- The unit is designed for 240V electrical systems only.
- Installation requires specific infrastructure (60A breaker and 6AWG wiring) which must be verified before installation.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.