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Instruction Manual
COMMERCIAL GAS WATER HEATERS
MODELS AHCG3/HCG3 60T 120
THROUGH AHCG3/HCG3 100T 250
SERIES 100 & 101
www.americanwaterheater.com
INSTALLATION - OPERATION - SERVICE
American Water Heater
- MAINTENANCE - LIMITED WARRANTY
Johnson City, TN 37605
WARNING: If the information in these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury or death.
Do not store or use gasoline or other
flammable vapors and liqu
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TABLE OF CONTENTS 3 Gas Line Leak Testing 40 4 Purging 40 4 41 6 41 6 41 42 6 42 7 7 TEMPERATURE REGULATION 43 43 8 43 10 44 11 44 Rough In Dimensions 11 44 12 45 12 47 12 Temperatures Menu 47 13 48 13 49 Insulation Blankets 13 Heater Information 49 14 50 14 50 14 50 14 50 Mixing Valves 15 51 15 52 15 52 Thermal Expansion 15 54 54 Temperature-Pressure Relief Valve 16 55 17 55 18 21 LIGHTING THE WATER HEATER 56 Lighting & Operation Labels 5
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SAFE INSTALLATION, USE AND SERVICE This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death. DANGER indicates an imminently hazardous situation which, if not avoided, DANGER will result in injury or death. WARNING indicates a potentially hazardous situation which, if not avoided, could result WARNING in injury or death. C
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GENERAL SAFETY INFORMATION PRECAUTIONS HYDROGEN GAS FLAMMABLE Explosion Hazard Flammable hydrogen gases may be present. Keep all ignition sources away from faucet when turning on hot water. GROUNDING INSTRUCTIONS Verify the power to the water heater is turned off before performing any service procedures. Read and understand this instruction manual and the safety messages Explosion Hazard her
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GENERAL SAFETY INFORMATION Fire or Explosion Hazard Fire Hazard Do not store or use gasoline or other flammable vapors and For continued protection against liquids in the vicinity of this or any other appliance. risk of fire: Avoid all ignition sources if you smell gas. Do not install water heater on Do not expose water heater controls to excessive gas carpeted floor. pressure. Do not operate water heater if Use only the gas shown on the water heater rating label. flood damaged. Maintain require
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INTRODUCTION ABBREVIATIONS USED NOTE: QUALIFICATIONS QUALIFIED INSTALLER OR SERVICE AGENCY ANSI Z223.1 2006 Sec. 3.3.83: PREPARING FOR THE INSTALLATION
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FEATURES AND COMPONENTS BLOWER/BURNER ASSEMBLY DETAIL BASIC OPERATION INTAKE AIR COMBUSTION (combustion air) BLOWER CONNECTION 3 INCH PVC BLOWER BLOWER FLANGE BURNER ASSEMBLY FLAME SENSOR MAIN BURNER (radial design) INTAKE AIR HOT SURFACE IGNITER (combustion air) CONNECTION 120,000 & 150,000 Btu/hr MODELS 3 INCH PVC MAIN COMBUSTION INTAKE AIR BURNER BLOWER ASSEMBLY (combustion air) (radial design) CONNECTION 3 I
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TOP VIEWS 6 7 120,000 & 150,000 8 9 Btu/hr MODELS 10 2 TOP VIEW 5 11 4 12 13 3 2 14 FRONT 15 16 1 17 Figure 3 A/HCG3 120 & 150 COMPONENTS
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TOP VIEWS (CONT) 199,000 & 250,000 7 Btu/hr MODELS 10 8 9 TOP VIEW 2 6 5 11 4 12 13 3 2 14 FRONT 15 16 1 17 Figure 4 A/HCG3 199 & 250 COMPONENTS
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4 5 5 4 13 6 14 3 2 3 7 8 2 9 15 10 11 1 12 16 LEFT SIDE RIGHT SIDE 120,000 & 150,000 Btu/hr MODELS 199,000 & 250,000 Btu/hr MODELS Figure 5 SIDE VIEWS 10
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I A V DRA N V L E RAIN VALVE D T & P VALVE T & P VALVE INTAKE AIR INTAKE AIR 3 INCH PVC 3 INCH PVC INSTALLATION CONSIDERATIONS ROUGH IN DIMENSIONS SUPPLY GAS INTAKE AIR CONNECTION CONNECTION 3 INCH PVC WATER OUTLET HEIGHT I FRONT BACK T & P VALVE E F B H D VENT CONNECTION CLEANOUT 3 INCH PVC 3/4” NPT DRAIN (exhaust elbow) 1 1/2” NPT WATER INLET CONDENSATE DRAIN CONNECTION 1/2 INCH PVC C A G These designs comply with the current edition of the American National Standard for Gas Water Heaters, V
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GAS LINE CONNECTION SIZE STORAGE CAPACITIES TABLE 1 TABLE 2 † MODEL MODEL 100/101 3/4 "NPT 3/4 "NPT 60 227 100/101 3/4 "NPT 3/4 "NPT 100 379 100/101 3/4 "NPT 3/4 "NPT 100 379 100/101 3/4 "NPT 3/4 "NPT 100 379 GAS PRESSURE REQUIREMENTS TABLE 3 MODEL RECOVERY CAPACITIES TABLE 4 U. S. GALLONS/HR & LITTERS/HR AT TEMPERATURE RISE INDICATED Type of Input
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HARD WATER CIRCULATION PUMPS CLEARANCE TO COMBUSTIBLE MATERIALS NOTE: ALCOVE CLEARANCES TO COMBUSTIBLE AND NON COMBUSTIBLE CONSTRUCTION MATERIALS TOP COVER 0 INSULATION BLANKETS 0 WATER 0 HEATER FRONT FRONT T
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INSTALLATION REQUIREMENTS GAS SUPPLY SYSTEMS POWER SUPPLY
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MIXING VALVES HOT WATER OUTLET Water temperature over 125°F (52°C) can cause severe burns instantly 12” TO 15” resulting in severe injury or death. (30-38 cm) Children, the elderly and the TEMPERED WATER physically or mentally disabled are at OUTLET highest risk for scald injury. Feel water before bathing or CHECK COLD showering. VALVE WATER Temperature limiting devices such as INLET MIXING mixing valves must be installed CHECK VALVE when required by codes and to VALVE ensure safe temperatures a
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TEMPERATURE-PRESSURE RELIEF VALVE CAUTION Explosion Hazard Water Damage Hazard Temperature-Pressure Relief Valve must comply with ANSI Z21.22- CSA 4.4 and ASME code. Temperature-Pressure Relief Valve discharge pipe must terminate at adequate drain. Properly sized temperature- pressure relief valve must be installed in opening provided. T&P Valve Discharge Pipe Requirements: Can result in overheating and excessive tank pressure. Can cause serious injury or
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CONDENSATE DRAIN COMBUSTIBLE MATERIAL STORAGE Fire or Explosion Hazard Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. Avoid all ignition sources if you smell gas. Do not expose water heater controls to excessive gas pressure. Use only the gas shown on the water heater rating label. Maintain required clearan
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UNUSUALLY TIGHT CONSTRUCTION AIR REQUIREMENTS Breathing Hazard - Carbon Monoxide Gas Install water heater in accordance with CONFINED SPACE the Instruction Manual and NFPA 54 or CAN/CSA-B149.1. To avoid injury, combustion and ventilation air must be taken from outdoors. Do not place chemical vapor emitting products near water heater. Breathing carbon monoxide can cause brain dama
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FRESH AIR OPENINGS FOR CONFINED SPACES DO NOT refer to these illustrations for the purpose of vent OUTDOOR AIR THROUGH TWO OPENINGS OUTDOOR AIR THROUGH TWO HORIZONTAL DUCTS Figure 10 Figure 12
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OUTDOOR AIR THROUGH TWO VERTICAL DUCTS AIR FROM OTHER INDOOR SPACES DO NOT refer to these illustrations for the purpose of vent Figure 14 Figure 13 20
