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American Water Heater High Efficiency Commercial Gas HCG Series AHCG3 119T 300 THRU AHCG3 119T 500 Series 200 201 User Manual
American Water Heater High Efficiency Commercial Gas HCG Series AHCG3 119T 300 THRU AHCG3 119T 500 Series 200 201 User Manual
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COMMERCIAL GAS WATER HEATERS Instruction Manual PRINTED 1215 327737-002 PLACE THESE INSTRUCTIONS ADJACENT TO HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE. Thank you for buying this energy efficient water heater. We appreciate your confidence in our products. Read and understand this instruction manual and the safety messages herein before installing, operating or servicing this water heater . Failure to follow these instructions and safety messages could result in death or serious injury. This manual must remain with the water heater . MODELS (A)HCG3 119T 300 (A)HCG3 119T 400 (A)HCG3 119T 500SERIES 200 & 201 INSTALLATION - OPERATION - SERVICE - MAINTENANCE - LIMITED WARRANTY 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 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. Installation and service must be performed by a qualified installer, service agency or the gas supplier.• • • • ANSI/NSF-5LOW LEADCONTENT www. americanwaterheate r.co m American Wa ter Heater Johnson City, TN 37605
2 Power Vent Installation....................................................... 23 Direct Vent Installation ....................................................... 23 Vertical Termination Installation .......................................... 24 Sidewall Termination Installation ........................................ 26 Polypropylene Installations ................................................ 27 AL29-4C® Vent Installations .............................................. 28 Concentric Termination Installation .................................... 29 6 Inch Concentric Termination Installation ......................... 30 Low Profile Vent Installation ............................................... 33 Venting Arrangements ........................................................ 34 Termination Clearances Sidewall Power Vent ....................36 Termination Clearances Sidewall Direct Vent ....................37 WATER HEATER INSTALLATION ...........................................38 Condensate Drain Installation ............................................ 38 Supply Gas Line Installation ............................................... 39 Gas Line Leak Testing ........................................................ 40 Purging ............................................................................... 40 Electrical Wiring ................................................................. 40 Enable/Disable Circuit (For Building Management Systems) ................................. 41 Water Line Connections ..................................................... 41 T&P Valve Discharge Pipe ................................................. 42 TEMPERATURE REGULATION .............................................43 High Temperature Limit Control (ECO) .............................. 43 Thermostat Control ............................................................ 43 CONTROL SYSTEM OPERATION .........................................44 Overview ............................................................................ 44 Control System Navigation ................................................. 44 User Settings & Control System Menus ............................. 47 START UP ............................................................................... 52 Prior to Start up .................................................................. 52 Lighting & Operation Label ................................................. 53 Checking the Firing Rate .................................................... 54 High Altitude Installations ................................................... 55 TROUBLESHOOTING ............................................................ 56 Installation Checklist .......................................................... 56 Sequence of Operation ...................................................... 56 Sequence of Operation Flow Chart .................................... 57 Operational Problems ........................................................ 58 Fault and Alert Conditions .................................................. 59 MAINTENANCE ...................................................................... 62 General .............................................................................. 62 Maintenance Schedule ....................................................... 62 Draining and Flushing ........................................................ 62 Filling the Water Heater ..................................................... 63 Sediment Removal ............................................................. 63 Lime Scale Removal .......................................................... 63 Powered Anode Rods ........................................................ 64 Drain Valve and Access Panels ......................................... 64 Temperature-Pressure Relief Valve Test ............................64 Vent System ....................................................................... 64 DIAGRAMS ............................................................................. 65 CCB - Central Control Board Layout .................................. 65 Wiring Diagram .................................................................. 66 Circulation Pump Wiring Diagrams .................................... 67 Water Piping Diagrams ...................................................... 68 LIMITED WARRANTY ............................................................. 75 SAFE INSTALLATION, USE AND SERVICE .............................3 APPROVALS ............................................................................. 3 GENERAL SAFETY INFORMATION .........................................4 Precautions .......................................................................... 4 Grounding Instructions ......................................................... 4 Hydrogen Gas Flammable ................................................... 4 INTRODUCTION ....................................................................... 6 Abbreviations Used .............................................................. 6 Qualifications ........................................................................ 6 iCOMM™ & BACnet Compatible ......................................... 6 Preparing for the Installation ................................................ 6 FEATURES AND COMPONENTS ............................................7 Basic Operation .................................................................... 7 Modulation ............................................................................ 7 Blower/Burner Assembly Detail ............................................ 7 Top View ............................................................................... 8 Side Views ........................................................................... 9 INSTALLATION CONSIDERATIONS ......................................10 Rough In Dimensions ......................................................... 10 Gas Line Connection Size .................................................. 10 Storage Capacities ............................................................. 10 Recovery Capacities .......................................................... 10 Gas Pressure Requirements .............................................. 10 Minimum Supply Gas Line Size ......................................... 10 Locating the Water Heater ................................................. 11 Extended Vent Terminations .............................................. 11 Optional Direct Vent Terminations ...................................... 12 Hard Water ......................................................................... 12 Circulation Pumps .............................................................. 12 Insulation Blankets ............................................................. 12 INSTALLATION REQUIREMENTS .........................................13 Gas Supply Systems .......................................................... 13 Supply Gas Regulator ........................................................ 13 Power Supply ..................................................................... 13 Mixing Valves ..................................................................... 14 Dishwashing Machines ...................................................... 14 Closed Water Systems ....................................................... 14 Thermal Expansion ............................................................ 14 Temperature-Pressure Relief Valve ...................................15 Condensate Drain .............................................................. 16 Combustible Material Storage ............................................ 16 Contaminated Air ................................................................ 16 Air Requirements ............................................................... 17 Unconfined Space .............................................................. 17 Confined Space .................................................................. 17 Fresh Air Openings For Confined Spaces ..........................18 Outdoor Air Through Two Openings ................................... 18 Outdoor Air Through One Opening .................................... 18 Outdoor Air Through Two Horizontal Ducts ........................ 18 Outdoor Air Through Two Vertical Ducts ............................19 Air From Other Indoor Spaces ...........................................19 INSTALLATION REQUIREMENTS - COMMONWEALTH OF MASSACHUSETTS ................................................................. 20 VENTING INSTALLATION ...................................................... 21 General Venting Information .............................................. 21 General Venting Instructions .............................................. 21 Venting Requirements ........................................................ 22 Venting Installation Sequence ............................................ 23 TABLE OF CONTENTS
3 SAFE INSTALLATION, USE AND SERVICE The proper installation, use and servicing of this water heater is extremely important to your safety and the safety of others. Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and others of a potential injury hazard. Read and obey all safety messages and instructions throughout this manual. It is very important that the meaning of each safety message is understood by you and others who install, use, or service this water heater. All safety messages will generally tell you about the type of hazard, what can happen if you do not follow the safety message, and how to avoid the risk of injury. DANGER W ARNING CAUTION CAUTION DANGER indicates an imminently hazardous situation which, if not avoided, will result in injury or death. 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. WARNING indicates a potentially hazardou s situation which, if not avoided, could resul t in injury or death. CAUTION indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injur y. CAUTION used without the safety aler t symbol indicates a potentially hazardous situation which, if not avoided, could result in property damage. APPROVALS ANSI/NSF-5 LOW LEAD CONTENT NOTE: ASME construction is optional on the water heaters covered in this manual.
4 PRECAUTIONS DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN EXPOSED TO FLOODING OR WATER DAMAGE. Immediately call a qualified service agency to inspect the appliance and to make a determination on what steps should be taken next. If the unit is exposed to the following, do not operate heater until all corrective steps have been made by a qualified service agency. 1. External fire. 2. Damage. 3. Firing without water. GROUNDING INSTRUCTIONS This water heater must be grounded in accordance with the National Electrical Code and/or local codes. These must be followed in all cases. Failure to ground this water heater properly may also cause erratic control system operation. This water heater must be connected to a grounded metal, permanent wiring system; or an equipment grounding conductor must be run with the circuit conductors and connected to the equipment grounding terminal or lead on the water heater. HYDROGEN GAS FLAMMABLE Hydrogen gas can be produced in a hot water system served by this water heater that has not been used for a long period of time (generally two weeks or more). Hydrogen gas is extremely flammable. To reduce the risk of injury under these conditions, it is recommended that a hot water faucet served by this water heater be opened for several minutes before using any electrical appliance connected to the hot water system. If hydrogen is present there will probably be an unusual sound such as air escaping through the pipe as the water begins to flow. THERE SHOULD BE NO SMOKING OR OPEN FLAME NEAR THE FAUCET AT THE TIME IT IS OPEN. GENERAL SAFETY INFORMATION Read and understand this instructio n manual and the safety messages herein before installing, operating or servicing this water heater . Failure to follow these instructions and safety messages could result in death or serious injury. This manual must remain with the water heater . Water temperature over 125°F (52°C) can cause severe burns instantly resulting in severe injury or death. Children, the elderly and the physically or mentally disabled are at highest risk for scald injury . Feel water before bathing or showering. Te mperature limiting devices such as mixing valves must be installed when required by codes and to ensure safe temperatures at fixtures. Explosion Hazard Overheated water can caus e water tank explosion. Properly sized temperature and pressure relief valve must be installed in the opening provided. Verify the power to the water heater is turned off before performing any service procedures. The Enable /Disable switch on front panel disables the 24 volt gas valve\ . Electrical supply must be turned off at circuit breaker serving water heater. Improper installation, use and service may result in property damage. Do not operate water heater if flood damaged . Inspect and anode rods regularly, replace if damaged . Install in location with drainage . Fill tank with water before operation. Properly sized thermal expansion tanks are required on al l closed water systems. Refer to this manual for installation and service . CAUTION Explosion Hazard Flammable hydrogen gases may be present. Keep all ignition sources away from faucet when turning on hot water.
5 GENERAL SAFETY INFORMATION Fire or Explosion Hazard Read instruction manual befor e installing, using or servicing water heater . Avoid all ignition sources if you smell gas . Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. Use only the gas shown on the water heater rating label. Keep ignition sources away from faucets after extended periods of non-use. Maintain required clearances to combustibles. Do not expose water heater controls to excessive gas pressure. Do not obstruct water heater air intake with insulating blanket. Gas and carbon monoxide detectors are available. Install water heater in accordance with the instruction manual. Breathing carbon monoxide can cause brain damage or death. Always read and understand instruction manual. Breathing Hazard - Carbon Monoxide Ga s Property Damage Hazard All water heaters eventually leak.Do not install without adequate drainage. CAUTION Fire and Explosion Hazard Turn of f gas lines during installation. Contact a qualified installer or servic e agency for installation and service. Excessive gas pressure to gas valve ca n cause serious injury or death. Do not use water heater with any gas other than the gas shown on the rating label. Fire Hazard Do not install water heater on carpeted floor . Do not operate water heater if exposed to flooding or water damage. For continued protection agains t risk of fire: Fire and Explosion Hazar d Leak test gas connections before placing the water heater in operation. Disconnect gas piping at main gas shutoff valve before lea k testing heate r. Install sediment trap in accordanc e with NFPA 54 or CAN/CSA 149.1. Use joint compound or Teflon tape compatible with propane gas . Turn of f power at the branch circuit breaker serving the water heate r before performing any service . Electrical Shock Hazard Label all wires prior to disconnecting when performing service. Wiring error s can cause improper and dangerous operation. Ve rify proper operation after servicing. Failure to follow these instructions ca n result in personal injury or death. Jumping out control circuits or components can result in property damage, personal injury or death. Service should only be performed by a qualified service technician using proper test equipment. Altering the water heater controls and/or wiring in any way could result in permanent damage to the controls or water heater and is not covered under the limited warranty . Any bypass or alteration of the water heater controls and/or wiring will result in voiding the appliance warranty .
6 Thank You for purchasing this water heater. Properly installed and maintained, it should give you years of trouble free service. ABBREVIATIONS USED Abbreviations found in this Instruction Manual include :• ANSI - American National Standards Institute • ASME - American Society of Mechanical Engineers • AHRI - Air Conditioning, Heating and Refrigeration Institute • NEC - National Electrical Code • NFPA - National Fire Protection Association • UL - Underwriters Laboratory • CSA - Canadian Standards Association QUALIFICATIONS QUALIFIED INSTALLER OR SERVICE AGENCY Installation and service of this water heater requires ability equivalent to that of a Qualified Agency (as defined by ANSI below) in the field involved. Installation skills such as plumbing, air supply, venting, gas supply and electrical supply are required in addition to electrical testing skills when performing service. ANSI Z223.1 2006 Sec. 3.3.83: “Qualified Agency” - “Any individual, firm, corporation or company that either in person or through a representative is engaged in and is responsible for (a) the installation, testing or replacement of gas piping or (b) the connection, installation, testing, repair or servicing of appliances and equipment; that is experienced in such work; that is familiar with all precautions required; and that has complied with all the requirements of the authority having jurisdiction.” If you are not qualified (as defined by ANSI above) and licensed or certified as required by the authority having jurisdiction to perform a given task do not attempt to perform any of the procedures described in this manual. If you do not understand the instructions given in this manual do not attempt to perform any procedures outlined in this manual. ICOMM™ & BACNET COMPATIBLE This water heater is compatible with the iCOMM™ remote monitoring system. The iCOMM™ system hardware and monitoring service is purchased separately. It allows users to monitor critical operational, diagnostic and energy usage data from a secure web site. The iCOMM™ system can automatically notify selected personnel via email and/or cellular phone text messages if operational problems or user defined Alert Conditions occur. iCOMM™ system hardware is compatible with BACnet compliant supervisory controls and building management systems. For more information call 888-928-3702. PREPARING FOR THE INSTALLATION 1. Read the entire manual before attempting to install or operate the water heater. Pay close attention to the General Safety Information on pages 4 and 5. If you don’t follow the safety rules, the water heater may not operate safely. It could cause property damage, injury and/or death. This manual contains instructions for the installation, operation, and maintenance of the water heater. It also contains warnings throughout the manual that you must read and be aware of. All warnings and all instructions are essential to the proper operation of the water heater and your safety. INTRODUCTION Detailed installation diagrams are also found in this manual. These diagrams will serve to provide the installer with a reference. It is essential that all venting, water piping, gas piping and wiring be installed as shown. Particular attention should be given to the installation of thermometers at the locations indicated in the piping diagrams as these are necessary for checking the operation of the water heater. The principal components of the water heater are identified in Features And Components on page 7 in this manual. Use this reference to locate and identify various components on the water heater. See the Installation Checklist and Troubleshooting page 56. By using this checklist the user may be able to make minor operational adjustments and avoid unnecessary service calls. However, service and diagnostic procedures should only be performed by a Qualified Service Agency. NOTE: Costs to correct installation errors are not covered under the limited warranty. 2. Be sure to turn off power when working on or near the electrical system of the water heater. Never touch electrical components with wet hands or when standing in water. 3. The installation must conform to all instructions contained in this manual and the local code authority having jurisdiction. These shall be carefully followed in all cases. Authorities having jurisdiction should be consulted before installation begins if there are any questions regarding compliance with local, state or national codes. In the absence of local codes, the installation must comply with the current editions of the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and the National Electrical Code, NFPA 70 or CAN/CSA-B149.1, the Natural Gas and Propane Installation Code and CSA C22.1, the Canadian Electrical Code. All documents are available from the Canadian Standards Association, 8501 East Pleasant Valley Road, Cleveland, OH 44131. NFPA documents are also available from the National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02269. 4. If after reading this manual you have any questions or do not understand any portion of the instructions, call the toll free number on the back cover of this manual for technical assistance. In order to expedite your request, please have the full Model, Serial and Series number of the water heater you are working with available for the technician. This information is located on the water heater’s rating label. 5. Carefully plan the placement of the water heater. Examine the location to ensure that it complies with the requirements in Rough In Dimensions on page 10 and Locating the Water Heater on page 11. 6. For installation in California this water heater must be braced or anchored to avoid falling or moving during an earthquake. See instructions for correct installation procedures. Instructions may be obtained from California Office of the State Architect, 1102 Q Street, Suite 5100, Sacramento, CA 95811. 7. Massachusetts Code requires this water heater to be installed in accordance with Massachusetts 248-CMR 2.00: State Plumbing Code and 248-CMR 5. See Commonwealth of Massachusetts on page 20.
7 BASIC OPERATION The water heaters covered in this manual have a helical coil shaped heat exchanger that is submerged in the storage tank. The water heater’s Main Burner is a radial design burner, it is mounted on the top and fires downward through the heat exchanger. This is a forced draft burner; hot burning gases are forced through the heat exchanger under pressure and exit through the exhaust/vent connection located at the bottom of the water heater. See Figure 1 and Figure 2. BLOWER BURNER ASSEMBL Y MAIN BURNER (radial design)HEA T EXCHANGER INT AKE AIR (combustion air) CONNECTION 4 INCH PVC HELICALCOIL VENT (exhaust) OUTLET Figure 1 FEATURES AND COMPONENTS MODULATION The water heaters covered by this manual are capable of modulating their firing rate. The CCB monitors the water temperature in the tank and regulates the firing rate to achieve the target temperature setpoint. The firing rate is dictated by the hot water draw, proximity to the tank temperature setpoint, and various other temperature limitations. Periodically, when the heater is in modulation mode, the CCB will increase the blower speed for a short period of time to clear out any condensation that has accumulated in the heat exchanger then decreases the blower speed back to the modulating firing rate required to maintain the desired tank temperature setpoint. This ramping up and down of the blower speed is considered normal operation of the water heater. BLOWER/BURNER ASSEMBLY DETAIL SP ARK IGNITER COMBUSTION BLOWER FLAME SENSOR MAIN BURNER (radial design) BLOWER FLANGE INT AKE AIR (combustion air) CONNECTION 4 INCH PVC Figure 2 Spark Electrode The control system energizes the spark ignition control with 120 VAC during the ignition period. The spark ignition control then sends a high-voltage electrical current to the spark igniter which in turn ignites the main burner air/gas mixture. Flame Sensor The control system also monitors the flame sensor to confirm a flame is present at the Main Burner. If a flame is not verified during the ignition trial period (3-5 seconds) the control system will immediately de-energize the 24 VAC Gas Valve. See the Sequence of Operation Flow Chart on page 57.
8 gas pressure is above minimum requirements. The control system monitors this switch and will disable heating operation if its contacts are open during a heating cycle. See Table 4 and the Gas Pressure Requirements on page 10. 10. Blower Prover switch. Normally open contacts that close on a rise in pressure. This switch is used to insure the Combustion Blower is operating properly. The control system monitors this switch and will disable heating operation if its contacts are closed before the Combustion Blower is energized or open any time during a heating cycle. See Sequence Of Operation on page 56. 11. Vent connection (exhaust/condensate elbow) - 4 inch aluminum. 12. Combustion Blower Assembly. Includes Gas Valve and Venturi gas feed system. 13. Blocked Exhaust (vent) switch. Normally closed contacts that open on a rise in pressure. This switch is used to insure the Exhaust (vent) piping connected to the water heater is not restricted. The control system monitors this switch and will disable heating operation if its contacts are open during a heating cycle. 14. VFD (variable frequency drive) blower motor drive. 15. Temperature-Pressure Relief Valve. See Temperature- Pressure Relief Valve on page 15. 16. Upper Temperature Probe, 1 of 2 temperature probes. The water heater’s control system monitors this probe to detect water temperature in the upper portion of the storage tank. The Upper Temperature Probe also houses the ECO (energy cut out) switch. This is a non adjustable high temperature limit switch. The ECO switch contacts are normally closed and will open on a temperature rise. See High Temperature Limit Control (ECO) on page 43. 17. Water outlet connection 1 1/2” NPT. 18. UIM (user interface module). The UIM includes the display circuit board, the control system’s LCD display and operational buttons. Used to adjust various user settings and view operational information. See Control System Operation on page 44. 19. Spark Ignition Control. When energized, sends the electrical current to the spark igniter. TOP VIEW COMPONENTS (All Models) IMPORTANT. The Enable/Disable switch listed in this manual is NOT an "on/off" switch and does not disconnect 120 volt power to the CCB and other heater components. 1. Water Heater's Enable/Disable Switch. When in the "Disabled" position the switch removes electrical power from the gas valve so that water heating is disabled. The display, CCB, and other electrical components will still be energized and the display will read "Water Heating Disabled". 2. Powered anode rods. The water heater’s covered in this manual are equipped with two powered (non sacrificial) anode rods. Protective current is fed by the control system to the titanium electrodes at the end of each anode rod. This current flows through the water to the conductive surfaces inside the storage tank which diminishes the corrosive effect of water when it comes in contact with steel. 3. Central Control Board (CCB) enclosure. This enclosure houses the control system’s main circuit board, power supply board, power transformer, and configuration key. The CCB regulates water temperature and controls all water heater functions, see Control System Operation on page 44. 4. 120 VAC junction box. Incoming power supply, ground connections, and other field installed electrical connections are made here. See Power Supply on page 13 and Power Supply Connections on page 40. 5. Intake air connection - 4 inch PVC. 6. Blocked Intake Air switch. Normally closed contacts that open on fall in pressure. This switch is used to insure intake (combustion) air to the water heater is not restricted. The control system monitors this switch and will disable heating operation if its contacts are open during a heating cycle. 7. Water heater's 24 VAC Gas Valve. 8. Supply gas line connection. See the requirements for the Supply Gas Line on page 10. 9. Low Gas Pressure switch. Normally open contacts that close on a rise in pressure. This switch is used to insure supply Figure 3 3 2 4 5 7 9 11 12 2 14 15 17 1 18 19 1610 6 13 8
9 circuit board, the control system’s LCD display and operational buttons. Used to adjust various user settings and view operational information. See Control System Operation on page 44. 11. Temperature-Pressure Relief Valve. See Temperature- Pressure Relief Valve on page 15. 12. Temperature-Pressure Relief Valve discharge pipe - see T&P Valve Discharge Pipe Requirements: on page 15. 13. Lower Temperature Probe, 1 of 2 temperature probes. The water heater’s control system monitors this probe to detect water temperature in the lower portion of the storage tank. 14. Water inlet connection - 1 1/2” NPT connection. 15. Water heater drain valve. 16. Combustion Blower. 17. Vent connection (exhaust/condensate elbow) - 4 inch aluminum. 18. Recirculation loop return connection - 3/4" NPT. 19. Spark Ignition Control, When energized, sends the electrical current to the spark igniter.SIDE VIEWS 1. Cleanout access panel, covers water heater cleanout opening and ASME plate where applicable. 2. CCB enclosure - see Figure 3 on page 8 for description. 3. 120 VAC junction box. Incoming power supply, ground connections, and other field installed electrical connections are made here. See Power Supply on page 13 and Power Supply Connections on page 40. 4. Intake air connection - 4 inch PVC. 5. Supply gas line connection. See Supply Gas Line on page 10. 6. Low Gas Pressure switch, see description under Figure 3 on page 8. See Table 4 and the Gas Pressure Requirements on page 10. 7. Water heater 24 VAC Gas Valve. 8. Water outlet - 1 1/2” NPT connection. 9. VFD (variable frequency drive) blower motor drive - - see Figure 3 on page 8 for description. 10. UIM (user interface module). The UIM includes the display Figure 4 Figure 5 11 12 14 15 1317 3 19 18 2 1 4 6 10 LEFT SIDE 9 8 18
10 GAS INTAKE CLEANOU TT&PDRAI N EXHAUS T 1 1/2 NPT WATER OUTLET FRONT 18° 30° 45° 42° 70°20° TOPRECIRC RETURN CLEANOUT 3/4 NPT T&P 3/4 NPT DRAIN 1 1/2 NPT WATER INLET 4 EXHAUST VENT CONNECTION 52 in132.08c m 32.39cm12-3 /4in4- 3/4in12.07cm 58.43cm23 in 75 -3/4in192.41c m FRONT CONNECTION 1 1/2 SUPPLY GAS BACK4 PVC AIR INTAKE CONNECTION 73-3/4in 33 -1/8 in187.3cm 84.12cm O.D. 69 -1/4 in175.9cm 63 -1/8 in160.35cm WATER OUTLET HEIGHT Figure 6 These designs comply with the current edition of the American National Standard for Gas Fired Water Heaters, Volume III, ANSI Z21.10.3- CSA 4.3. (A)HCG3 119T300 & 400 are Automatic Circulating Tank or Automatic Storage Water Heaters. (A)HCG3 119T500 is Automatic Circulating Tank or Automatic Instantaneous Water Heater STORAGE CAPACITIES TABLE 2 Model U.S. Gallons Liters ASME Standard ASMEStandard All 11 911 9450.96 450.96 ROUGH IN DIMENSIONS GAS LINE CONNECTION SIZE TABLE 1 MODEL SERIESNATURAL GAS PROPANE GAS (A)HCG3 119T300 200/2011 1/2” NPT 1 1/2” NPT (A)HCG3 119T400 200/2011 1/2” NPT 1 1/2” NPT (A)HCG3 119T500 200/2011 1/2” NPT 1 1/2” NPT This table shows connections sizes only. Depending on the installed equivalent length, and/or the number of appliances connected, the supply gas line size may have to be increased beyond the minimum required sizes - see Gas Line Sizing on page 39. RECOVERY CAPACITIES TABLE 3 U.S. GALLONS/HR & LITERS/HR AT TEMPERATURE RISE INDICATED Model Type of Gas Input Thermal Efficiency % °F 30°F 40°F50°F60°F70°F80°F90°F100°F 110°F120°F 130°F140°F Btu/hr kW °C17°C 22°C28°C33°C39°C44°C50°C56°C61°C67°C72°C78°C (A)HCG3 119T300 Natural 300,000 88 96GPH 1164 873698582499436388349317291269249 Propane LPH4404 33032643220218881652146813211201 11011016 944 (A)HCG3 119T400 Natural 399,900 11 7 95GPH 1535 1151 921767658576512460419384354329 Propane LPH5810 43573486290524902179193717431585145213411245 (A)HCG3 119T500 Natural 499,900 146 95GPH 1919 1439 1151 959822720640576523480443 4 11 Propane LPH7263 544743583631 31132724 242121791981181616761556 GAS PRESSURE REQUIREMENTS TABLE 4 MODEL *MANIFOLD PRESSURE MINIMUM SUPPLY PRESSURE MAXIMUM SUPPLY PRESSURE NATURAL GAS PROPANE GAS NATURAL GASPROPANE GAS NATURAL GASPROPANE GAS (A)HCG3 119T300 0” W. C. (0 kPa)0” W. C. (0 kPa)4.8" W .C. (1.19 kPa) 8.5” W. C. (2.12 kPa) 14” W. C. (3.49 kPa)14” W. C. (3.49 kPa) (A)HCG3 119T400 0” W. C. (0 kPa)0” W. C. (0 kPa)4.8" W .C. (1.19 kPa) 8.5” W. C. (2.12 kPa) 14” W. C. (3.49 kPa)14” W. C. (3.49 kPa) (A)HCG3 119T500 0” W. C. (0 kPa)0” W. C. (0 kPa)4.8" W .C. (1.19 kPa) 8.5” W. C. (2.12 kPa) 14” W. C. (3.49 kPa)14” W. C. (3.49 kPa) * The manifold pressure is the factory setting and is not adjustable. A negative pressure will be seen with just the blower running without the Gas Control Valve open. MINIMUM SUPPLY GAS LINE SIZE TABLE 5 MODEL *NATURAL GAS PROPANE GAS (A)HCG3 119T300 1 1/4" NPT1 1/4" NPT (A)HCG3 119T400 1 1/4" NPT1 1/4" NPT †(A)HCG3 119T500 1 1/2" NPT1 1/4" NPT † Note that (A)HCG3 119T500 natural gas models require a 1 1/2" minimum supply gas line size. Depending on the installed equivalent length, and/or the number of appliances connected, the supply gas line size may have to be increased beyond the minimum required sizes shown in this table - see Gas Line Sizing on page 39. INSTALLATION CONSIDERATIONS