Legacy Tankless series have all been proven with years of use, and are ready to stand up to the rigors of difficult conditions where a Digital Tankless might not dare to tread.
If you can say "yes" to any of the following, you may be a candidate for ownership of a Paloma Legacy Tankless: - Low water pressure, from a well, for example. - No electricity, or you want it to stand up to power outages. - Your installation will involve a long vertical vent run (unlike Digital Tankless, Legacy units are atmospherically vented using less expensive, galvanized “B” vent).
What Is A Modulating Unit? Turn on your hot water faucet and water is heated instantly as it flows through the heating coils. The Paloma modulating control automatically adjusts the flame to the water flow you select. Low water demand equals low flame. Large water demand equals high flame. And Paloma's burners shut off automatically as soon as you turn off the faucet. Paloma produces hot water only when and as much as you need. That's why you can save energy and money.
FEATURES - Endless hot water on demand. - Mechanical modulation to keep output temperatures consistent, even if you change the flow at the tap. - A knob controller to set water temperature rise from 60 to 100 degrees above inlet temperature. - Full performance at water pressure of just 12.9 psi. Minimum working pressure of just 2.4 psi. - Energy-saving design. - Energy efficiency - 80% more efficient than tank-type water heaters. - Compact, space-saving design. - Stainless steel burner. - Gas-pressure regulator. - Drain plug. - Flexible hot and cold water tubes. - Built-in Piezo ignition to easily light the standing pilot (so you can extinguish the pilot light when not in use to achieve greater overall energy efficiency). - Temperature-adjusting spindle. - Water regulator. - Optional freeze protection kit to protect the unit against freezing conditions down to minus 5 degrees F.
SAFETY FEATURES - Overheat limiting device. - Temperature-limiting device. - Thermocouple-magnetic pilot safety device. - A magnetic safety valve to stop gas flow when the pilot is extinguished.
TEMPERATURE AND PRESSURE RELIEF VALVE: The Paloma PH24 tankless water heater requires Zurn TP220-5C-150 temperature and pressure relief valve.
WARRANTY - 5 Year Limited Warranty on Heat Exchanger leakage. - 3 Year Limited Warranty on Parts in residential applications.
Paloma PH-24 Water Heaters 
Legacy Tankless series have all been proven with years of use, and are ready to stand up to the rigors of difficult conditions where a Digital Tankless might not dare to tread.