— Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. — WHAT TO DO IF YOU SMELL GAS • Do not try to light any appliance. • Do not touch any electrical 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. CAUTION TEXT PRINTED OR OUTLINED IN RED CONTAINS INFORMATION RELATIVE

Irving, Texas Printed in the U.S.A. 596 4575 Series 226-227 Part No. TC-034 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK WORKBOOK INTRODUCTION Purpose The information contained in this workbook is designed to answer situations commonly encountered in the operation of the POWER SHOT and SEALED SHOT Product and is not meant to be all inclusive. If you are experiencing a problem not covered in this workbook, please contact the A.O. Smith Technical Information Department at (800)527-1

34,534; 7,270,087 B2. OTHER U.S. AND FOREIGN PATENT APPLICATIONS PENDING. CURRENT CANADIAN PATENTS: 1,272,914; 1,280,043; 1,289,832; 2,045,862; 2,112,515; 2,108,186; 2,107,012; 2,092,105; 2,409,271. Defender Safety System®, Vitraglas® and Hydrojet® are registered trademarks of Bradford White® Corporation. 103-B-0508-A Residential Direct Vent Water Heater Direct Vent Energy Saver Models Meet or exceed ASHRAE 90.1b (current standard) C.E.C. Listed 80% Recovery Efficiency NATURAL GAS AND LIQUID PRO

FOR USE ONLY WITH VENTING SYSTEMS SUPPLIED WITH THE WATER HEATER WHETHER A NEW INSTALLATION OR A REPLACEMENT INSTALLATION. CANADIAN MANUAL ALL TECHNICAL AND WARRANTY QUESTIONS: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE WATER HEATER WAS PURCHASED. IF YOU ARE UNSUCCESSFUL, PLEASE WRITE TO THE COMPANY LISTED ON THE RATING PLATE ON THE WATER HEATER. KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED. PRINTED IN THE U.S.A 02

[Not seen in picture] Temperature Control Knob set the temperature OO The Temperature Control Knob allows you to set the temperature between 25 C and 75 C. Thermal Cutout cuts off electrical power to the unit if a fault occurs, ensuring safety In case a fault occurs and the water temperature exceeds the highest preset temperature on the thermostat, the breaker rapidly cuts off the live line and the zero line simultaneously to guarantee safety. A. O. Smith ColourMatch SystemTM TMThe A. O. Smith C

Improper installation and/or operation will void the warranty. For indoor installations, as an additional measure of safety, Bradford White strongly recommends installation of suitable Carbon Monoxide detectors in the vicinity of this appliance and in any adjacent occupied spaces. WARNING If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life. Do not store or use gasoline or other flammable vapors and liq

We appreciate your confidence in our products. You should thoroughly read this manual before installation and/ or operation of this water heater. Please pay particular attention to the important safety and operating instructions as well as the WARNINGS and CAUTIONS. GPDH/GPDT/GPDX GAS MODELS with Hot Surface Ignition TABLE OF CONTENTS PAGE GET TO KNOW YOUR WATER HEATER ......................2 GENERAL SAFETY INFORMATION .............................3 INSTALLATION .................................

Smith Technical Information Water Products Co. 78 Irving, Texas FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont. Trouble- shooting cont BLOWER RUNS CONSTANTLY (CALLING FOR HEAT, NO PILOT) First make the Preliminary Checks (see page 71) then perform each of the following tests until cause of the failure is determined: 1. Air Pressure Switch Test 2. Vent High Limit Test 3. Blower Test 4. Cable Test 5. High Limit Test 6. TH Wire Test 7. PV - MV

SMITH PKG. NO. 211480). + PIPING AND FITTINGS BETWEEN GATE VALVES AND BOILERS SHOULD BE BRASS OR BRONZE. OTHER PIPING SHOULD CONFORM TO LOCAL CODES. GATE VALVES ARE SHOWN FOR SERVICING BOILER. HOWEVER, LOCAL CODES SHALL GOVERN THEIR USAGE. PRESSURE RELIEF VALVE RATING SHOULD NOT EXCEED PRESSURE CAPACITY OF ANY COMPONENT IN THE SYSTEM. INSTALL THERMOMETER AND PRESSURE RELIEF IN OPENINGS PROVIDED ON HW-520 & HW-610. USE THIS TABLE FOR CORRECT PUMPAND WATER PIPE SIZE FAIRLYROUGH PIPE Allowable Pres