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A.O. Smith Vertex GPHE-50 User Manual

Residential gas water heaters, Gphe-50

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GAS-FIRED

Residential Gas Water Heaters

90% THERMAL EFFICIENCY

ENDLESS HOT WATER

VERSATILE POWER-VENT DESIGN

ARGSS01306

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GPHE-50

Today’s homes demand more hot water than ever before, and the 90% efficient
Vertex power-vent gas water heater offers unprecedented levels of performance to
meet the need. The 50-gallon Vertex delivers hot water output that rivals a 75-gallon
atmospheric gas water heater. In fact, the fully condensing Vertex design is so
advanced, it can deliver “endless hot water for showers”…a continuous flow of over
3 gallons per minute.* Yet Vertex is easy to install, with height, diameter and
installation requirements similar to standard power-vent units.

HELICAL INTERNAL HEAT EXCHANGER

• Completely surrounded by water in tank, provides much greater heat transfer

surface than standard straight flue tube

• Helps produce 90% thermal efficiency, which saves money on operating costs

compared to a standard 78% efficient gas water heater

POWER VENTS USING PVC PIPE

• Combined vertical and horizontal vent runs terminating through an outside wall,

using Schedule 40 PVC pipe

• 2" pipe, vents up to 25 equivalent feet
• 3" pipe, vents up to 65 equivalent feet
• 4" pipe, vents up to 128 equivalent feet

MODULAR BLOWER

• Equipped with 120 volt, 60 Hz electrical system (rating 5 amps or less), 6-foot

cord with standard 3-prong connector

• 2" PVC pipe, elbows and condensate drain supplied to connect heat exchanger

outlet to blower

• PVC Vent Attenuation Assembly (VAA) supplied

SIDE-MOUNTED HOT AND COLD RECIRCULATING TAPS

• Allows Vertex to be installed as part of combination space heating/water heating

applications or any system requiring a recirculating hot water loop, including
radiant floor heating

INTELLI-VENT GAS CONTROL

• Equipped with nearly indestructible silicon nitride hot surface ignitor —
no standing pilot
• Advanced electronics for more precise control of water temperature and easy
to understand system diagnostics

COMMERCIAL GRADE GLASS LINING

• A. O. Smith PermaGlas

®

Ultra Coat

process provides superior protection

against

corrosion

• Protects all interior tank surfaces including inside and outside of helical
heat

exchanger

TWO HEAVY-DUTY ANODE RODS

• Provide even more protection against corrosion

GREEN CHOICE

®

GAS BURNER

• Patented “eco-friendly” design reduces NOx emissions by up to 33%
and complies with Southern California and Texas requirements

FACTORY-INSTALLED TEMPERATURE AND PRESSURE RELIEF VALVE

MAXIMUM HYDROSTATIC WORKING PRESSURE: 150 PSI

* 3.07 GPM continuous flow, based on 65ºF inlet water temperature, 110º outlet temperature.

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ARGSS01306

August 2007R

182626 ARGSS01306 vertex.indd 1

8/23/07 9:12:24 AM