WaiWela - Quality Tankless Water Heaters - Products

PH2-28RDVS & PH2-28R0F N/P
PH2-25RDVS & PH2-25ROF N/P
PH2-20RDVS & PH2-20ROF N/P
Gas Tankless Water Heaters

These units qualify for the Federal Tankless Tax Credit.
30% of the total cost(including installation), up to $1,500.

Features:

Residential & Commercial Applications
2010 Federal Tax Credit Approved
0.26GPM Minimum Flow Rate / 0.4GPM Activation
Integrated Appliance Adapter & Condensate Drain To Simplify Venting On Indoor Direct Vent Models
Supports Both Horizontal & Vertical Venting
Wired Temperature Remote Control Included
Connect Up To 20 units In Tandem
High Altitude Capable
Self Diagnostic System
Supplied 120V Power Cord On Indoor Direct Vent Models
Freeze Protected to -30°F
Low NOx Burner
Accepts Preheated Water Up To 140°F
Made In Japan

Unique safety features:

ICAD
Incomplete Combustion Avoidance Device // Monitors Combustion For Evidence Of Unsafe Carbon Monoxide
Overheat Limiter Wrap
Resin Film Surrounds The Combustion Chamber, Detecting Overheating
Flame Failure Monitor
Flame Rods Ensure Proper Firing & Detect Flame Failure
Anti-Scald protection
Temperature Controller Can Be Adjusted To Prevent Scalding

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

Convenience:

Digital Controller
Changes Temperature Settings Immediately & Precisely With The Touch Of A Button, And Functions As A Diagnostic Display
Endless Hot Water
Never Run Out Of Hot Water Again

The FILM TYPE OVERHEAT LIMITER 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.

WARRANTY*
12 Year warranty on heat exchanger
5 Year warranty on parts
1 Year warranty on service
*Effective on all water heaters purchased after 07-01-2008

Technical Specifications

SPECIFICATIONS
BTU Input Range	11,000 ~ 199,900 (fully modulating)
Maximum Hot Water Output	9.5 GPM (35° rise at 30 psi)
Minimum Flow for Ignition	0.4 GPM
Dimensions (inches)	Outdoor: 13 7/8 (w) x 23 5/8 (h) x 8 7/8 (d) Indoor DV: 13 7/8 (w) x 25 5/8 (h) x 9 7/8 (d)
Working Water Pressure	14~150 psi
Temperature Range PH2-28RDVS, PH2-28ROF, PH2-25RDVS, PH2-25ROF	85~140°F (or 185°F with hi-temp commercial chip)
Temperature Range PH2-20RDVS, PH2-20ROF	100~140°F
Gas Connection	3/4" NPT Femal (with included gas shutoff valve)
Water Connection	3/4" NPT Male
Efficiency Rating	82%
DOE Energy Factor	0.82
Gas Inlet Pressure (Indoor and Outdoor Models)	Natural Gas : Min 4.5" W.C.; Max 10.5" W.C. LP Gas: Min 10.0" W.C.; Max 14.0" W.C.
Gas Inlet Pressure (Direct Vent 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 (SCAQMD Rule 1146.2)
Electrical Requirement	120 V/60 Hz AC, 2 Amps
Power Cord (Except Outdoor)	6-foot. 3-pin indoor power cord (pre-installed)
Freeze Protection	(-30°F) (including windchill factor)
Controller/Diagnostic Display	UMC-117 (included)
Electric 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 Direct Vent)	3/5" Category III stainless steel venting req.
Vent Maximum Length	23 feet (with three 90-degree elbows)
Net Weight	54 lbs.
WARRANTY*
12 year (Heat Exchanger) / 5 year (Parts) / 1 year (Service) *Effective on all water heaters purchased after 07-01-2008