WaiWela - Quality Tankless Water Heaters - Products

PH-28CIFS N/P Commercial Indoor Gas Tankless Water Heater

Wall mounted space saving features.
Modular expandability allowing up to 20 PH28C modules (4M BTU/HR) to be interfaced into one centrally controlled system.
- Each module is less than 200,000 btu/hour eliminating the need for ASME approval leading to more affordable pricing.
- All modules age together as a result of a rotation in firing order.
High gal/min capacity at temperatures up to 180F and a never ending supply.
Energy efficient tankless concept only uses that amount of gas necessary to fill the demand.
Serviceability without system interruption. Heater modules can be removed from service without taking the system down.
Three year heat exchanger warranty, one year on parts.
Excellent tech support.
Energy Factor of 0.82

Manual (4.21MB, pdf)
Brochure (335KB, pdf)

Technical Specifications and Submittal Sheets

Unique safety features:

Equipped with oxygen depletion system
Film type overheat sensing
Flame failure safety device

Paloma Industries is the #1 gas appliance manufacturer in Japan. The commercial model PH28 incorporates TWO unique safety features not found on competitive tankless gas water heaters.

First is the OXYGEN DEPLETION SENSING system (Indoor Model Only). Emissions from the sampling burner are constantly analyzed for carbon monoxide gas. If necessary, the fan speed is adjusted by the on board CPU. If the fan speed adjustments do not resolve the combustion problem, the burner will be turned off and a potentially dangerous situation avoided. An error message will be displayed.

Second is the FILM TYPE OVERHEAT SENSING. Waiwela alone senses high temperature at all positions surrounding the combustion chamber. Other manufactures only sense at one point on the combustion chamber.

Three remote controls (one main control and two bath remote controls) can be installed together. One main remote control (UMC-117) comes with each unit.

3 Year warranty on heat exchanger.
1 Year warranty on parts.

PH28-C Series Commercial Manifold System

Technical Specifications

SPECIFICATIONS - MODELS AND VENTING FOR ALL PH-28C MODELS
BTU Input Range	19,000 ~ 199,900 (fully modulating)
Maximum Hot Water Output	8.5 GPM (40 degree rise at 30 psi)
Minimum Flow for Ignition	0.66 GPM
Dimensions	14 7/8 (w) x 25 3/8 (h) x 11 1/8 (d)
Working Water Pressure	14 ~ 150 psi
Temperature Range	100 ~ 180 degrees F
Gas Connection	3/4" NPT Female (with included gas shutoff valve)
Water Connection	3/4" NPT Male
Efficiency Rating	84%
DOE Energy Factor	0.82
Gas Inlet Pressure (Indoor and Outdoor Models)	Natural Gas:Min 4.0"W.C.; Max 10.5"W.C. LP Gas:Min 8.0"W.C.; Max 14.0"W.C.
Gas Inlet Pressure (DirectVent Model)	Natural Gas:Min 4.5"W.C.; Max 10.5"W.C. LP Gas:Min 10.0"W.C.; Max 14.0"W.C.
Low NOx Compliant (SCAQMD Rule 1146.2)	Yes
Electrical Requirement	120 V/60 Hz, 2 Amps
Power Cord (Except Outdoor)	10-foot. 3-pin indoor power cord(pre-installed)
Freeze Protection	Minus 30 degrees F (including windchill factor)
Controller/Diagnostic Display	UMC-117
Electronic Manifold Ready	Yes:2 to 20 units (use MIC-180 Controller)
DUOnex™ Ready?	Yes:2 units with DUOnex™ Cable
Gas Shutoff Valve	Included
Vent Requirement (Indoor/DirectVent)	4" Category III stainless steel venting required
Vent Maximum Length	37.5 feet (with three 90-degree elbows)
Air Intake (Direct Vent)	4" stainless steel, PVS or aluminum
Air Intake Maximum Length	37.5 feet (with three 90-degree elbows)
Net Weight	55 lbs.
SAFETY ENGINEERING
Carbon Monoxide Safety	ICAD™-Proprietary system to monitor and optomize combustion (Not on Outdoor version)
Heat Exchanger Overheat Protection	Overheat Limiter Wrap. Resin Film that surrounds the heat exchanger.
Flame Failure	Thee separate flame rods to monitor flame failure
Anti-boil Protection	Temperature sensor
Anti-scald Protection	- Bath Controller maximum temp 120°F. - When on, Bath Controller takes priority over others. - While hot water is running, Bath Controller max. temp. cannot be raised above 112°F.
FEATURES
Continuous hot water on demand Energy-saving design Compact, and takes no floor space (wall hung installation) Unmatched Safety Engineering Proprietary ICAD™ Safety System (on indoor model) Propreitary Film Wrap Overheat Limiter (on heat exchanger) Flame failure and anti-boil protection Freeze protection to minus 30°F Built-in diagnostics and usage record Includes Digital Controller to set temperature and display diagnostics 180°F maximum temperature 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°F
WARRANTY
3 year (Heat Exchanger) / 1 year (Parts)