Paloma Water Heaters PH2-28
(9.5 Series) Review

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Paloma water heaters PH2-28, 9.5 series offer an efficient whole-house heating solution and provide enough hot water for up to three simultaneous applications.


Paloma water heaters PH2-28

Paloma tankless water heaters from PH2-28 or 9.5 series are the most powerful non-condensing units from this manufacturer that give the highest water flow.

They are working with the energy efficiency of 84%, which makes them high efficient appliances and Energy Star compliant.

Because of its tankless technology, PH2-28 heaters are heating water on demand and provide an endless hot water continuously, only when needed. Since they don't have a storage tank, and with the small and compact design, they are ideal for wall mounting.

Models

Paloma 9.5 or PH2-28 series offers two models, both capable of using natural gas or propane.

Indoor model

PH2-28RDVSN is the direct vent model that is designed for the indoor installation. Direct vent model is built with the sealed combustion chamber, and it must use the venting system to move the flue gases outside. As it uses the separate pipe to bring the fresh air inside the heater, these tankless models can be installed almost anywhere inside the house. The exhaust pipe has to be made of the high-temperature resistant stainless steel.

Outdoor model

PH2-28ROFN is the outdoor model that has the built-in electric blower, which is sufficient to move the flue gases from the combustion chamber out.

To prevent damages on the heater's elements, both indoor and outdoor models should be prepared correctly for the long and cold winters.

Features

Power

Paloma water heaters PH2-28 operate between its minimum of 11,000 Btu/hr and maximum of 199,900 Btu/hr. The heater adjusts its power based on the water flow so the gas burner modulates between these two values.

Temperature range

The unit comes with the factory set maximum temperature of 120 F, which can be adjusted on the digital remote control and set between the lowest 85 F and the maximum of 140 F. Paloma gas water heaters can be converted for commercial applications so the maximum temperature can be set to higher 185 F.

For even better temperature control, there is an option to install a bath controller USC1-117 so hot water temperature can always be on a safe side and never above 120 F.

Water flow

Paloma water heaters PH2-28 provide maximum of 9.5 gallons per minute, but if there is a demand for more hot water, this system can be expanded by using the DUOnex cable, so two units are connected into one. By using the multi-unit system controller, there is an option to connect up to 20 units into one system.

ICAD

Another great advantage for PH2-28 direct vent heaters is the ICAD Safety System which is used to optimize gas combustion while shutting down the unit in a case of the increased level of carbon monoxide.

Diagnostic system

Thanks to the intelligent electronics 95 series can increase the energy efficiency, performance and safety while it provides problem diagnostics and shows it on the LCD display.

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Safety devices

  • ICAD - Incomplete Combustion Avoidance Device.

  • Film wrap overheat limiter for fire protection.

  • Anti-boil protector shuts down the water heater if there is not enough water flowing through the unit.

  • Freeze protection system uses the electric heating elements.

Paloma water heaters PH2-28 come with the warranty of 12 years on the heat exchanger and five on other parts and its longevity depends on the proper installation, maintenance and how did you solve the problems.

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I have had the model PH28-R from Paloma since 2008. With 6 people showering every morning, it has performed like a champ. The only issue I have is that …

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