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Tankless Water Heater Paloma PH-28C-OFP
Tankless Water Heater Paloma PH-28C-OFP

Tankless Water Heater Paloma PH-28C-OFP

Brand: Paloma
Mfg Number:
  • Volts: 120 V
  • Dimensions: 25-3/8 x 14-7/8 x 11-1/8
  • Color: Gray
Availability: In Stock Usually ships In 4-6 Business Days
Product Information
Retail: $1,369.29 Price: $1,149.00
You Save: $220.29 (16.1%)


High Volume Tankless Water Heater Outdoor - PH-28C OFP - 28c Series - Commercial

Type of Fuel Propane Gas
Safety Engineering N/A
Heat Exchanger: Film Wrap Overheat Limiter
Flame Failure Safety Monitor: Flame Rod Type
Anti-boil protection
Vent Length Maximum N/A
Rated Gas Input (BTU's/Hr.) 19,000 - 199,900 (modulating)
Dimensions (inches) 14-7/8 (W) x 25-3/8 (H) x 11-1/8 (D)
Net Weight (lbs.) 55
Working Water Pressure 14 psi (minimum); 150 psi (maximum)
Minimum Flow for Ignition 0.66 GPM
Gas Connection 3/4" NPT Male
Thermal Efficiency 0.82
Energy Factor (DOE) 0.82
Electrical Requirement 120 VAC/60 Hz, Less than 2 Amps
Freeze Protection Minus 30° F (including wind chill factor)
Controller/Diagnostic Display Main Unit Remote Control - UMC-117 (included)
Multi-Unit System Controller
(sold separately)
2 to 6 units Controller System: MIC-180 (includes installation box)
7 to 20-unit system: MIC-180 + MICS-180 (contact us for more information)
Factory-set maximum temperature is 120 degrees F
For installations above 3,280 feet, the connector to the PC board must be replaced. Consult factory or your supplier for details.
This heater is also available in different Models
Paloma PH-28R OFN - Outdoor - Natural Gas Tankless Water Heater
Paloma PH-28R OFP - Outdoor - Propane Tankless Water Heater
Paloma PH-28R DVSN - Direct Vent - Natural Gas Tankless Water Heater
Paloma PH-28R DVSP - Direct Vent - Propane Tankless Water Heater
Paloma PH-28C IFSP - Indoor - Propane Tankless Water Heater
Paloma PH-28C OFN - Outdoor - Natural Gas Tankless Water Heater
Paloma Water Heaters Up to $300 Home Energy Improvement Federal Tax Credit

In the commercial hot-water world, the 28c Series may be the only tankless solution you will ever need to know.

With the 28c as your platform, you can solve the needs of a small restaurant kitchen, a school shower facility, or a large National Guard training base. The 28c can be used standalone, or it can be configured into multi-unit systems of 2 to 20 units controlled with Paloma's Manifold Electronic Controller.

Why use Paloma's Expandable Tankless Water Heater instead of conventional hot-water solutions?

  • Standard components - You can standardize your design of hot water systems from 200,000 to 4.0 million BTU's on a single, common component - the Paloma 28c.
  • Scalability - Systems can be designed to be expanded over time to accommodate increasing hot-water requirements.
  • Installation ease - Each unit you carry in weighs just 55 pounds, and you have leeway in designing the installation around space limitations of your mechanical room.
  • Built-in redundancy - Even if one unit requires servicing, other units in your system will continue to provide hot water. It is not necessary to shut down the entire system to service a single unit.
  • Servicing flexibility - You can, in fact, swap units out for offsite servicing if you wish.
  • Smart energy use - Just like a tankless system for home use, commercial applications can also leverage the Paloma's on demand energy-wise performance.

Multi-Unit Systems

A large system of 28c Paloma's can be electronically controlled with the MIC-180 Manifold Controller. For systems of 7 to 20 units, the MIC-180 Controller needs an extended communication board, the MICS-180, which can be fit inside the MIC-180 installation box.

Single-Unit Controller

The UMC-117 Main Controller is used to set temperatures, display error codes and access maintenance information on a single-unit installation. In multi-unit systems, one Main Controller is used as the temperature controller and error display for the entire system. Others continue to be used to display diagnostic information on specific units.


  • Endless hot water on demand
  • Energy efficiency - heats water only when it is needed
  • Compact, and takes no floor space (wall-hung installation)
  • Unmatched Safety Engineering
  • Proprietary ICAD Safety System (on indoor model)
  • Proprietary Film Wrap Overheat Limiter (on heat exchanger)
  • Flame failure and anti-boil protection
  • Freeze protection to minus 30 degrees F
  • Built-in diagnostics and usage record
  • Includes Digital Controller to set temperature and display diagnostics
  • 180-degrees F maximum temperature setting
  • Minimum flow for ignition: 0.66 GPM
  • Power Return: AUTO-ON at last setting after power interruption
  • Low NOx emissions meet SCAQMD Rule 1146 requirements
  • Can be used in circulation systems up to 140 degrees F

Multi-Unit System Features:

  • 1- to 20-unit systems with 199,900 to 3.99 million BTU's/hr. inputs
  • MIC-180 Manifold Controller quickly and tightly calibrates firing, temperature and volume output of each unit in system
  • Control logic distributes heating load to maximize system life
  • Can be delivered and installed in tight locations
  • Built-in system back-up
  • Units can be serviced without shutting down the entire system

Commercial Warranty

  • 3-Year Limited Warranty on Heat Exchanger
  • 1-Year Limited Warranty on Parts

Heater-Store or any of it's affiliates are not responsible for damages or injury caused by wrongful installation or application of this product.

Product PDF's and Other ResourcesDimensions
25-3/8 x 14-7/8 x 11-1/8
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