Tankless Hot Water Heater Glossary

Storage Tank Water Heater

Stores large amounts of hot water 24/7, and designed to be replaced over time. This unit constantly tries to
heat the water in the tank at a consistent temperature until it is used.

Tankless Water Heater

This unit heats water on an as-needed basis, with no need for a tank to store all of the hot water.

Burner

Gas-powered mechanism that heats the water in the heater.

Heat Exchanger

Copper piece inside the heater that transfers the heat from the heater to the water.

Quick-Connect Multi-System

Noritz water heater models (All units excluding the NR66 & NR77 series) have the capability being installed together with the Quick-Connect Cord. Two units (installed between 2-18 inches of each other) may be connected together by the Quick-Connect Cord and controlled by a single digital remote thermostat, essentially doubling capacity.

ASME

The American Society of Mechanical Engineers is one of the oldest and most respected standards-developing
organizations in the world that focuses solely on the safety of the public’s health and welfare. The ASME
standards help ensure that manufacturers meet the relevant specifications. In order to be accredited by ASME,
vigorous requirements must be met and demonstrate the implementation of the standards program by the
manufacturer, including a properly trained staff to ensure quality control.