A.O. Smith GPHE-50 Technical Documents

Residential Gas Water Heaters

VERTEX

TM

90% THERMAL EFFICIENCY
CONTINUOUS HOT WATER
VERSATILE POWER VENT DESIGN

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 more hot water
than a standard 75-gallon atmospheric gas water heater. In fact, the fully
condensing Vertex design is so advanced, it can deliver “continuous hot water
for shower after shower”...a constant 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

■ Spiral heat exchanger keeps hot combustion gases in the tank longer to

lengthen the heat transfer cycle

■ Positioned in the center of the tank for more even heat distribution

■ Operates at 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 runs terminating through an outside wall.

Installations require ULC s636 approved PVC or CPVC pipe for venting.

- 2” pipe, vents up to 45 equivalent feet

- 3” 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

GPHE-50

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

■ Equipped with nearly indestructible silicon nitride hot surface ignitor -

TM**

GAS CONTROL

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 CoatTM process provides superior

SERIES 100

protection against corrosion

■ Protects all interior tank surfaces including inside and outside of

helical heat exchanger

TWO HEAVY-DUTY ANODE RODS

■ Provide maximum protection against corrosion

CSA CERTIFIED AND ASME RATED T&P RELIEF VALVE

MAXIMUM HYDROSTATIC WORKING PRESSURE: 150 PSI

* 3.07 GPM continuous flow, based on 65°F inlet water temperature, 110°F outlet temperature.
**Intelli-VentTM is a registered trademark of Emerson Electric Company

Revised October 2012

CANRG45100

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Residential Gas Water Heaters

VERTEXTM 90% THERMAL EFFICIENCY POWER VENT

CODES AND STANDARDS

■ Design-certified by UL (Underwriters Laboratories) according to ANSI Z21.10.3 - 4.3 CSA Standards

■ Meets the thermal efficiency and standby loss requirements of the current edition ASHRAE/IESNA 90.1.

6-YEAR LIMITED TANK AND PARTS WARRANTY

For complete information, consult written warranty or A. O. Smith Water Products Company.

CAPACITY & DIMENSIONS

MODEL

GPHE 50* 76,000 50 127 92 70-5/8 68-1/4 52 21 9-1/8 12 22 8 15-3/4 27 210

*Natural gas only
Inlet and outlet connections: 3/4” male
Circulation loop connections: 3/4” female

BTU INPUT
PER HOUR

GALLON

CAPACITY

FIRST HOUR

DELIVERY
GALLONS

RECOVERY

90ºF RISE
GALLONS

PER HOUR

DIMENSIONS IN INCHES

A B C D E F G H J K

SHIPPING

WEIGHT

LBS

For Technical Information, call 1-888-479-8324. A. O. Smith reserves the right to make product changes or improvements without prior notice.

Revised October 2012

www.hotwatercanada.ca

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CANRG45100