Waiwela 7.4 Series, PH-28R IFSN, PH-28R IFSP, PH-28R OFN, PH-28R OFP Specifications
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R R
DUOnex
™
ready
R
R
R
R
MULTIready
scalable systems
CO SAFETY
ICAD
™
R
ENGINEERED
$300
Federal Tax Credit
Home Ene rgy Imp rovement
Up to
7.4
series
whole house
residential
gas tankless
water heater
ENERGY EFFICIENCY
Government Tests Show that WaiWela 7.4 Series Tankless •
Water Heaters use:
29% less energy than most 50 gallon tank-type heaters•
40% less energy than most 100 gallon tank-type heaters •
84% Efficiency Rating; DOE Energy factor of 0.82.•
Uses energy only when hot water is demanded.•
HOT WATER PERFORMANCE
cold climate performance*
*2 simultaneous uses in a cold climate
warm climate performance**
FREE
Lifetime Technical Support
1.800.605.6542
RELIABILITY
With an average lifetime of 20 years
or more, you can be sure your
tankless water heater will pay for
itself in energy savings alone.
EASY INSTALLATION
With Tankless Installation Valves •
(TIV)
Compact walL-mounted design •
saves valuable floor space
Versatile venting •
HIGHER STANDARDS
Low NOx Emissions•
Safety Engineered•
Energy Efficient•
Built-in Diagnostics & Usage •
Record
temperature rise (°F) 35 45 50 60 70 77 80 90 100
Gallons Per Minute 8.5 7.4 6.6 5.5 4.7 4.3 4.1 3.7 3.3
Gallons Per Hour 510 444 396 330 282 258 246 222 198
**Up to 3 simultaneous uses in a warm climate
Above estimates are for sizing purposes only
SAFETY ENGINEERING
WaiWela’s 7.4 Series includes safety engineering not found
on other brands, such as:
ICAD•
: Our proprietary safety system that constantly
™
monitors combustion for evidence of unsafe carbon
monoxide (on all indoor and direct vent models).
Overheat limiter Wrap• : Resin film surrounds the
combustion chamber, detecting overheating.
Flame Failure Safety Monitor• : Flame Rods ensure proper
firing and detect flame failure.
Anti-Scald Protection:• Bath Controller maximum
temperature 120°F. When on, Bath Controller takes priority.
While hot water is running, Bath Controller maximum
temperature cannot be raised above 112°F.
Anti-Boil Protection• : Temperature Sensor.
Freeze Protection to -30•
F
°
CONVENIENCE
Digital controller • changes temperature settings
immediately and precisely with the touch of a button and
functions as a diagnostic display.
Endless Hot Water• Never run out of hot water again.
RESIDENTIAL WARRANTY
12 Year • Limited Warranty on Heat Exchanger
5 Year • Limited Warranty on Parts
1 Year • Limited Warranty on Service
Gas Tankless Water Heater
7.4
series
SPECIFICATIONS
MODELS AND VENTING
INDOOR
natural gas
PH-28R IFSN
propane
PH-28R IFSP
BTU Input Range
Maximum Hot Water Output
Minimum Flow for Ignition
Dimensions (inches)
Working Water Pressure
Temperature Range
Gas Connection
Water Connection
Efficiency Rating
DOE Energy Factor
Gas Inlet Pressure
(Indoor and Outdoor Models)
Gas Inlet Pressure
(Direct Vent Model)
Low NOx compliant
Electrical Requirement
Power Cord (Except Outdoor)
Freeze Protection
Controller/Diagnostic Display
Electronic Manifold Ready?
DUOnex™ Ready?
Gas Shutoff Valve
Vent Requirement (Indoor/Direct Vent)
Vent Maximum Length
Air Intake (Direct Vent)
Net Weight
OUTDOOR
natural gas
PH-28R OFN
propane
PH-28R OFP
19,000 ~ 199,900 (fully modulating)
8.5 GPM (35° rise at 30 psi)
0.66 GPM
14 7/8 (w) x 25 3/8 (h) x 11 1/8 (d)
14 ~ 150 psi
100 ~ 140°F
3/4” NPT Female (w/ included gas shutoff value)
3/4” NPT Male
84%
0.82
Natural Gas: Min 4.0” W.C.; Max. 10.5” W.C.
LP Gas: Min. 8.0” W.C.; Max 14.0” W.C.
Natural Gas: Min 4.5” W.C.; Max. 10.5” W.C.
LP Gas: Min. 10.0” W.C.; Max 14.0” W.C.
Yes (SCAQMD Rule 1146.2)
120 V/60 Hz AC, 2 Amps
10-foot. 3-pin indoor power cord (pre-installed)
(-30°F) (including windchill factor)
UMC-117 (included)
Yes: 2 to 20 units (use MIC-180 Controller)
Yes: 2 units with DUOnex™ Cable
Included
4” Category III stainless steel venting required
37.5 feet (with three 90° elbows)
4” stainless steel, PVC, ABS or aluminum
55 lbs.
INDOOR
DIRECT VENT
sealed combustion
natural gas
PH-28R DVSN
propane
PH-28R DVSP
THE WAIWELA STORY
WaiWela* is proud to be affiliated with Paloma Industries, LTD. WaiWela
is represented by Efficient Technology Sales, LLC (ETS) in the USA &
Canada. With over 30 years of tankless experience, we are dedicated to
providing our customers with products high in comfort, economy,
efficiency and reliability.
FEATURES
Endless Hot Water On Demand•
Energy-Saving Design: Heats •
Water Only When Needed
Energy efficiency - 30% more •
efficient than tank-type water
heaters
Compact, space-saving design•
Self-diagnostic program•
UMC-117 Main digital remote •
control
Remote control displays •
adjustable temperature
settings
May be installed as part of a •
circulating water system
Double the performance with •
DUOnex™
2-to-20 unit systems with MIC-•
180 Controller
Supports both horizontal and •
vertical venting
ACCESSORIES
USC1-117• First Bath
Controller
USC2-117• Second Bath
Controller
DUOnex™• Cable for 2-Unit
System
Pipe Cover•
Recessed Box • (outdoor model)
MIC-180• Controller for 2 to 6
Unit Systems
MICS-180• Expansion Board for
7 to 20 Unit Systems
MIC Communication Cable• : 16
foot, 32 foot, 65 foot lengths
High Altitude• Adjustment Chips
Special Vent Terminations•
TIV• Tankless Installation Valves
UN-CLOG-IT• Descaling Kit
IN THE BOX
One WaiWela Tankless Unit•
One Digital Controller•
One Gas Shutoff Valve•
Attached 10ft. Power Cord •
(indoor and direct vent models)
Operating/Installation Manual•
AVAILABLE LOCALLY AT:
Paloma was the first gas tankless water heater manufacturer to enter
the U.S. market more than 30 years ago, and continues to be the leader
in the development of safe gas technology.
* Prounounced “Vi Vela” - Hawaiian for “hot water”
FOR MORE INFORMATION, VISIT WWW.WAIWELA.COM OR CALL 800.605.6542
efficient technology sales | 5350 Joliet St #2, Denver, CO 80239 | WaiWela name, design and related marks are
trademarks of Efficient Technology Sales, LLC. We are constantly working to improve our products and reserve the
right to change specifications at any time without notice. ©2009 Efficient Technology Sales, LLC. All Rights reserved.
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