A.O. Smith W/HOT Burner. Do not try to light the burner by hand, What to do if YOU Smell GAS

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FOR YOUR SAFETY READ BEFORE OPERATING

WARNING: If you do not follow these instructions exactly, a fire or

explosion may result causing property damage, personal injury or loss of life.

BEFORE OPERATING: ENTIRE SYSTEM MUST BE FILLED WITH WATER AND AIR PURGED FROM ALL LINES.

A. This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the

burner. Do NOT try to light the burner by hand.

B.BEFORE OPERATING smell all around the appliance area for gas. Be sure to smell next to the floor because

some gas is heavier than air and will settle on the floor.

WHAT TO DO IF YOU SMELL GAS:

•Do not try to light any appliance.

•Do not touch any electric switch;

Do not use any phone in your building.

•Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

•If you cannot reach your gas supplier, call the fire

department.

C.Use only your hand to push in the gas control buttons. Never use tools. If the control buttons will not push in, don’t try to repair them, call a qualified service technician. Force or attempted repair may result in a fire or explosion.

D.Do not use this appliance if any part has been under water. Immediately contact a qualified installer or service agency to replace a flooded water heater. Do not attempt to repair the unit! It must be replaced!

OPERATING INSTRUCTIONS

1.STOP! Read the safety information above, on this label.

2.Set the thermostat to the lowest setting by first pressing

the COOLER and HOTTER buttons together

and holding for 1 second. Then press the COOLER button until the WARM indicator light appears.

3.Set the “ON/OFF” switch on the blower control box to the “OFF” position.

4.This appliance is equipped with a device which automatically lights the burner.

DO NOT TRY TO LIGHT THE BURNER BY HAND.

5. Wait five (5) minutes to

clear

out any gas.

If you then smell gas,

STOP!

Follow “B” in

the safety information above on this label. If you don’t smell gas, go to the next step.

6.Turn on all electrical power to the appliance.

7.Set thermostat to desired setting by first pressing the

COOLER and HOTTER buttons together and holding for 1 second. Then press the HOTTER button.

8.If the appliance will not operate, follow the instructions “TO TURN OFF GAS TO APPLIANCE” and call your technician or gas supplier.

9.WATER TEMPERATURE ADJUSTMENT

is approximately 120°F.

CAUTION: Hotter water increases the risk of scald injury. Consult the instruction manual before changing temperature.

WARNING: TURN OFF ALL ELECTRIC

POWER BEFORE SERVICING

TO TURN OFF GAS TO APPLIANCE

1.Set the thermostat to the lowest setting by first pressing the COOLER and HOTTER buttons together and

holding for 1 second. Then press the COOLER button until the WARM indicator light appears.

2.Set the ON/OFF switch on the blower control box to the “OFF” position.

3.Turn off all electric power to the appliance if service is to be performed.

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Contents Power Vented GAS Models W/HOT Surface Ignition Commercial GAS Water HeatersSafe INSTALLATION, USE and Service Important DefinitionsGeneral Safety General Safety Table of Contents IntroductionRelief Valve Elbow Access Door Typical InstallationReplacement Parts and Deliming Products Condensate Hose and Drain PAN Capacity and Gas and Electrical Characteristics ROUGH-IN-DIMENSIONSRough-In-Dimensions Mixing Valve Usage Locating the NEW Water Heater Facts to Consider about the LocationInsulation Blankets ALL AIR from Inside Buildings See ALL AIR from Outdoors See Figures 7, 8Water Piping Installing the NEW Water HeaterChemical Vapor Corrosion TEMPERATURE-PRESSURE Relief Valve Valve and Pipe Insulation if suppliedGAS Piping with Flexible Connector GAS PipingFilling the Water Heater Vent Pipe AssemblySediment Traps VentingVent Hoods MAY be Extremely HOT During Operation Horizontal Vent ClearancesCanadian Horizontal Vent Clearances Vent Pipe Termination Planning the Vent System CondensateVent Terminal INSTALLATION, Sidewall Blower Assembly InstallationInstallation of Vent System Power Vent Wiring Schematic Figure Vent Termination FigureInstallation of Vent SYSTEM, Sidewall Installation of Vertical Vent SystemVent Attenuation Assembly Installation Vertical VAA Installations RecommendedInch vent Vertical VAA Installations Inch vent Horizontal VAA InstallationsVent Pipe Preparation Recommended BRUSH* Size for Primer Cement ApplicationsStep F Step BStep E Step GWhat to do if YOU Smell GAS Power Before ServicingBurner. Do not try to light the burner by hand Do not TRY to Light the Burner by HandDisplay Temperature RegulationTemperature Indicators Temperature Adjustment Buttons D E FOperational Conditions For Your InformationStart UP Conditions Venting System Inspection Periodic MaintenanceBurner Cleaning Burner Operation and InspectionDraining TEMPERATURE-PRESSURE Relief Valve OperationAnode ROD Inspection Service Leakage CheckpointsTroubleshooting Guidelines Trouble ShootingD E F Troubleshooting Guidelines Tank Service and Repair ExpensesClaim Procedure ALL Other Parts

W/HOT specifications

A.O. Smith, a leading manufacturer of water heating solutions, has made its mark in the industry with innovative products that combine efficiency, reliability, and advanced technology. Among its standout offerings is the A.O. Smith W/HOT series, designed to meet the diverse needs of residential and commercial customers.

The W/HOT series showcases a variety of tankless water heaters characterized by their ability to provide endless hot water on demand. Unlike traditional tank water heaters, which can run out of hot water during heavy usage, the W/HOT series ensures a constant supply, making it an ideal choice for families and businesses with high hot water needs. This feature not only enhances convenience but also optimizes energy usage by eliminating the standby heat loss associated with storage tanks.

One of the key technologies integrated into the W/HOT series is the microprocessor control system. This intelligent technology allows the unit to monitor water usage patterns and adjust operation accordingly. By optimizing heating cycles based on actual demand, this feature helps improve energy efficiency, resulting in lower utility bills without compromising performance.

The W/HOT series also incorporates advanced heat exchanger technology, enabling rapid heating of water as it passes through the system. This means minimal wait time for hot water and reduced energy consumption, as the unit only heats water when it is needed. The heat exchangers are designed for durability and effective heat transfer, helping to extend the overall lifespan of the unit.

Safety is a top priority in the design of A.O. Smith water heaters. The W/HOT series is equipped with multiple safety features, including a built-in thermal shut-off switch and safety sensors that prevent overheating. Additionally, the units are designed to comply with industry standards and regulations, ensuring peace of mind for users.

Installation flexibility is another defining characteristic of the W/HOT series. These tankless water heaters can be installed in various locations, requiring minimal space compared to traditional units. Their compact design makes them suitable for tight spaces, such as closets or utility rooms.

Overall, the A.O. Smith W/HOT series represents a commitment to innovation and quality in water heating solutions. Its combination of tankless design, advanced technology, and safety features makes it an excellent choice for those seeking efficient and reliable hot water access. Whether for residential or commercial use, A.O. Smith continues to lead the way in delivering top-tier water heating solutions that meet the evolving needs of consumers.
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