On-Demand Water Heater Installation Manual and Owner’s Guide R D R ANSI Z21.10.3・CSA 4.3 510C model only Models • 110C • 310C • 510C If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, WARNING personal injury or death. Gas Tankless Water HeaterTM Suitable for combination potable water heating and space-heating. Please refer to local codes for space-heating compliance.
Contents CONTENTS Installation Manual SPECIFICATIONS........................................................................................................................... 4 INTRODUCTION........................................................................................................................... 5 SAFETY GUIDELINES..................................................................................................................... 6 INSTALLATION..............................................
Installation Manual Installation Manual CONGRATULATIONS Congratulations and thank you for choosing our tankless water heater. Before use, we recommend that you read through this safety manual carefully. Please refer to the back of the manual for details about the warranty. Keep this manual for future reference. If you lose the manual, contact the manufacturer or your local distributor or download from the manufacturer's website.
Installation Manual Specifications SPECIFICATIONS Model Natural Gas Input (Operating Range) BTU/h 110C 310C 510C Min.: 15,000 Max.: 140,000 Min.: 15,000 Max.: 190,000 Min.: 15,000 Max.: 199,000 Gas Connection 3/4" NPT Water Connections 3/4" NPT Water Pressure* Natural gas Inlet Pressure Weight Dimensions psi (Mpa) " W.C. (kPa) 15 - 150 (0.1 - 1) Min. 5.0 (1.24) Max. 10.5 (2.61) lbs. (kg) 51 (23) inch mm H 20.5 x W 13.7 x D 10.
Installation Manual Introduction INTRODUCTION • This manual provides information necessary for the installation, operation, and maintenance of the water heater. • The model description is listed on the rating plate which is attached to the side panel of the water heater. • Please read all installation instructions completely before installing this product. • If you have any problems or questions regarding this equipment, consult the manufacturer or its local representative.
Installation Manual Safety Guidelines SAFETY GUIDELINES SAFETY DEFINITION DANGER WARNING CAUTION Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. Indicates an imminently hazardous situation which, if not avoided, could result in death or serious injury. Indicates an imminently hazardous situation which, if not avoided, could result in minor or moderate injury. GENERAL 1. 2. 3. 4. 5.
Installation Manual Installation INSTALLATION GENERAL 1. Follow all local codes, or in the absence of local codes, follow the current edition of the National Fuel Gas Code: ANSI Z223.1/NFPA 54 in the USA or CAN/CSA B149.1, Natural Gas and propane installation code in Canada. 2. All gas water heaters require careful and correct installation to ensure safe and efficient operation. This manual must be followed exactly. Read the “Safety Guidelines” section. 3.
Installation Manual Installation • Installation and service must be performed by a qualified installer (for example, a licensed plumber or gas fitter). Otherwise, the warranty will be WARNING void. • The installer (licensed professional) is responsible for the correct installation of the water heater and for compliance with all national, state / provincial, and local codes. • The manufacturer does not recommend installing the water heater in a pit or location where gas and water can accumulate.
Installation Manual Installation CLEARANCES Top Side Maintain all clearances around the water heater. Model Top 110C 310C 510C Bottom Front Back Front Back Side Sides 12 in. 12 in. 4 in.* 1 in. (305 mm) (305 mm) (102 mm) (25 mm) 3 in. (76 mm) Bottom *24 inches (610 mm) recommended for maintenance. INCLUDED ACCESSORIES Check that these items below are included with the water heater.
Installation Manual Installation 2. Concentric Sidewall Termination Kit 1. Condensate Collector and Trap 11 1/2" (292mm) (100266115) 21" (533 mm) (100266117) Collector (100266140) Trap (100266139) It includes: One Sidewall Termination, One 87° Elbow, Two Wall Plates. 3. Concentric Roof Termination 4. Elbow 38" (965 mm) Roof Termination (100266118) 45° Elbow (100266119) 5. Straight Pipe 87° Elbow (100266132) 6. Roof Flashing Flatroof Flashing (100266187) 10" (254 mm) Straight Pipe :(100266133) 19.
Installation Manual Installation WARNING FOR INSTALLATIONS FOR YOUR SAFETY, READ BEFORE INSTALLATION: Prohibited • Do not install the water heater and its termination where water, debris or flammable vapors may get into the water heater and flue terminal. This may cause damage to the heater and void the warranty. • Do not have the vent terminal pointing toward any opening into a building. • Do not locate your heater in a pit or location where gas and water can accumulate. 1 ft. (30 cm) min.
Installation Manual Installation HIGH-ALTITUDE INSTALLATIONS Check the altitude where your water heater is installed. Set DIP switches shown in the table below. The DIP switch settings are depending on the altitude. WARNING • The black squares indicate the positions of the DIP switches for high altitude installation. The 110C and 310C : Only adjust DIP switch No. 3, No. 4, and No.5. The 510C : Only adjust DIP switch No. 2, No. 3, and No. 4 on the lower bank.
Installation Manual Installation VENTING INSTRUCTIONS -General• Improper venting of this appliance can result in excessive levels of carbon monoxide which can result in severe personal injury or death. • Improper installation can cause nausea or asphyxiation, severe injury or death from carbon monoxide and flue gases poisoning. Improper installation will DANGER void product warranty. When installing the vent system, all applicable national and local codes must be followed.
Installation Manual Installation -Vent length and No. of ElbowsThis is a Category III appliance and must be vented accordingly. For best results, a vent system should be as short and straight as possible. • This water heater is a Category III appliance and must be vented accordingly with concentric vent approved for use with Category III or Special BH type gas vent. • Follow the vent pipe manufacturer's instructions and the instructions in this manual when installing the vent pipe.
Installation Manual Installation Venting Illustrations- For the 110C, 310C and 510C models For details of the venting installation, refer to the Centrotherm Eco Systems Direct Vent APNC35 concentric venting installation manuals. Horizontal Installation Standard Sidewall kit 11.5" (292 mm):100266115 21" (533 mm):100266117 Straight Pipe 10" (254 mm) : 100266133 19.
Installation Manual Installation -Vent termination clearancesINSIDE CORNER DETAIL V Vent terminal X Air supply inlet V Area where is not permitted G H A D E V B B B C V V L F V FIXED ED CLOS E BL A OPER V ED ABLE FIXLOSED C OPER V B B V X I M V X K J A Gas meter / regulator B A Clearance above grade, veranda, porch, deck, or balcony B Clearance to window or door that may be opened C Clearance to permanently closed window Vertical clearance to ventilated soffit located above D
Installation Manual Installation -For sidewall terminations2 ft. (61 cm) min. 1 ft. (30 cm) min. 1 ft. (30 cm) min. Concentric termination For multiple-unit, concentric wall terminals space each concentric wall terminal at least 1 ft. (30 cm) away from each other, no matter the orientation. A concentric wall terminal must also be at least 2 ft. (61 cm) away from an inside corner. (If the adjacent wall is less than 2 ft.
Installation Manual Installation GAS SUPPLY AND GAS PIPE SIZING -General• Do not use this water heater with any gas other than the one listed on the rating plate unless the water heater has been properly converted. • Ensure that any and all gas regulators used are operating properly and providing gas pressures within the specified range shown below. Excess gas WARNING inlet pressure may cause serious accidents.
Installation Manual Installation -Natural Gas Supply PipingMaximum delivery Capacity of Cubic Feet of Gas per Hour of IPS Pipe carrying Natural Gas with 0.60 Specific Gravity Based on Pressure Drop of 0.5" W.C. Based on Energy Content of 1,000 BTU/Cubic ft.: The water heater requires 140 Cubic ft./hr for the 110C, 190 Cubic ft./hr for 310C, and 199 Cubic ft./hr for the 510C model. Unit: Cubic feet per hour Pipe Size Diameter: 10' (3.0) in. 1/2" 172 3/4" 360 1" 1 1/4" 1 1/2" 2" 20' (6.
Installation Manual Installation -Measuring inlet gas pressure- WARNING 1. Turn off all electric power to the water heater if service is to be performed. 2. Turn the manual gas valve located on the outside of the unit clockwise to the off position. The water heater cannot perform properly without sufficient inlet gas pressure. Below are instructions on how to check the inlet gas pressure. THIS IS ONLY TO BE DONE BY A LICENSED PROFESSIONAL. 1. Shut off the manual gas valve on the gas supply line. 2.
Installation Manual Installation -Pressure relief valveThe water heater has a high-temperature shutoff switch built in as a standard safety feature (called a Hi-Limit switch). Therefore, a “pressure only” relief valve is required. • This unit does not come with an approved pressure relief valve. • An approved pressure relief valve must be installed on the hot water outlet. • The pressure relief valve must conform to the current edition of ANSI Z21.22 or CAN 1-4.4 and installation must follow local codes.
Installation Manual Installation TEMPERATURE REMOTE CONTROLLER -Optional itemVerify that the items listed below are included with the remote controller. Temperature remote controller* Screws Qty: 1 Manual Qty: 2 Qty: 1 *9009069005 (TM-RE42) -INSTALLATIONThis remote controller is NOT waterproof. The water heater can only have one remote controller. Do not install in high temperature environments, high humidity conditions outCAUTION doors, in direct sunlight, or within the reach of children.
Installation Manual Installation 3. Crimp the "Fork terminals" to the cable. (Fig. C) 4. Tighten the two "Fork terminals" beneath the two "Remote controller terminal" screws on the back of the main body. (Fig. D-1) 5. Cut out the inlet for the remote controller cable from the bottom of the main body. (Fig. D-2) 6. Place the "Main body" back on the "Back plate", with the "Remote controller cable" running out of the bottom inlet. Fig. C 1-3/8 Inch (35 mm) Fork Terminals Fig.
Installation Manual Installation EASY-LINK SYSTEM (Available on the 510C model only) -General- The 510C model water heaters can be connected together to work as a multiple-unit manifold system. • The Easy-Link System allows up to 4 units to manifold together (connected with communication Gas In cables). • A communication cable (gray color) comes with each 510C model. Cold In Hot Out You can manifold from 2 to 4 units without the need for a multi-unit controller.
Installation Manual Installation 9. Turn on power to the “PARENT” unit. Next, turn on “CHILD-1”. When the built-in controller installed in “CHILD-1” unit displays a number, turn on “CHILD-2”. When the built-in controller installed in the “CHILD-2” unit displays a number, turn on “CHILD-3”. Make sure the built-in controller installed in each child unit displays each unit #. (Refer to p.40.) The numbering system automatically allocates the unit No.
Installation Manual Installation MULTI-UNIT SYSTEM Multiple 510C models can be combined for a Multi-Unit System, along with the multi-unit controller (Part 9008300005 (TM-MC02)). Each multi-unit/remote controller set can control from 2 to 20 units for commercial or residential applications. For a 20-unit system, the computer can modulate between the usages of 15,000 BTU/h to 3.98 million BTU/h.
Installation Manual Applications APPLICATIONS -Space-Heating Applications• This water heater is suitable for combination water (potable) heating and space heating and not suitable for space heating applications only. • In order to purge air in water pipes within a closed-loop system, an air vent and air separator should be installed in the system. Required circulation flow rates are labeled next to each application diagram. These flow rate requirements must be WARNING followed.
Installation Manual Installation -Dual-purpose hot water heating(Domestic and Space Heating): Diagrammatic layout of radiant heating and domestic water heater per Massachusetts code. All water piping should be insulated in accordance with 780 CMR (Massachusetts energy code) Atmospheric vacuum breaker Thermostatic mixing valve Heating Coil (used with air-handler) Check valves 50’-0” maximum distance from water heater to fan coil.
Installation Manual Initial operation INITIAL OPERATION FOR YOUR SAFETY, READ BEFORE OPERATING • Check the GAS and WATER CONNECTIONS for leaks before firing unit for the first time. • Open the main gas supply valve to the unit using only your hand to avoid any spark. Never use tools. If the knob will not turn by hand, do not try to force it; call a qualified service technician. Forced or attempted repair may result in a fire or explosion due to gas leaks.
Owner's Guide Owner's Guide CONGRATULATIONS Congratulations and thank you for choosing our tankless water heater. Before use, we recommend that you read through this safety manual carefully. Please refer to the back of the manual for details about the warranty. Keep this manual for future reference. If you lose the manual, contact the manufacturer or your local distributor or download from the manufacturer's website.
Owner's Guide Operating Safety OPERATING SAFETY 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. A. This water heater does not have a pilot. It is equipped with an ignition device that automatically lights the burner. Do not try to light the burner by hand. B. BEFORE OPERATING smell all around the water heater area for evidence of leaking gas.
Owner's Guide Operating Safety DANGER Vapors from flammable liquids will explode and catch fire causing death or severe burns. Do not use or store flammable products such as gasoline, solvents or adhesives in the same room or area near the water heater. Keep flammable products: 1. Far away from heater 2. In approved containers 3. Tightly closed 4. Out of children's reach Vapors: 1. Cannot be seen 2. Vapors are heavier than air 3. Go a long way on the floor 4.
Owner's Guide Normal Operation NORMAL OPERATION BUILT-IN CONTROLLER and REMOTE CONTROLLER The illustrations below show examples of the displays of the controller. The exact display may differ from examples. Remote controller Built-in controller Display for Temperature When the STAND BY LED is ON, the hot water temperature will be displayed. "INFO" Button Each time the button is pressed, the operation mode is selected in the sequence of the following.
Owner's Guide Normal Operation TEMPERATURE SETTINGS -Set temperatureScreen on the controller Operation Built-in controller 1. Turn on the 120 VAC power supply to the unit (the water heater or the multi-unit controller). 2. Press the "ON/OFF" button on the controller in order to turn the controller on. 3. When ON, the STAND BY LED is lit. 4. It shows the set temperature on its display as shown in the picture on the right. (EX.: 120 °F) Remote controller (EX.
Owner's Guide Normal Operation ADDITIONAL FEATURES -Information mode- You can get some information about the water heater condition by pressing the "INFO" button. For more information, follow the procedures below: Screen on the controller INFO Button Operation 1st. press Inlet water temperature will be displayed on the remote controller by pressing the "INFO" button. Inlet water temperature 2nd.
Owner's Guide Normal Operation TEMPERATURE SETTINGS ON THE PCB (WITHOUT CONTROLLER) There are 2 preset temperatures, 120 °F (50 °C) and 140 °F (60 °C), that you can select from by changing the DIP switch settings on the computer board without the controller. See the table below. When the controller is in normal operation, the set temperature of the controller is given priority over the set temperature of the DIP switch settings. • The temperature has been preset at the factory to 120 °F (50 °C).
Owner's Guide Normal Operation FLOW • The flow rate through the water heater is limited to a maximum of 6.6 GPM (25 L/min) for the 110C model, 8.0 GPM (30 L/min) for the 310C model, and 10.0 GPM (38 L/min) for the 510C model. • The temperature setting, along with the supply temperature of the water will determine the flow rate output of the unit. • Please refer to the temperature vs. gallons per minute charts on p.
Owner's Guide Normal Operation MAINTENANCE AND SERVICE WARNING Turn off the electrical power supply and close the manual gas shutoff valve and the manual water control valve before servicing. • • • • • Clean the cold-water inlet filter. (Refer to Unit draining and filter cleaning section on this page.) Be sure that all openings for combustion and ventilation air are not blocked. The venting system should be checked annually for any leaks, corrosion, blockages or damage.
Owner's Guide Troubleshooting TROUBLESHOOTING GENERAL TEMPERATURE and AMOUNT OF HOT WATER PROBLEM SOLUTIONS It takes a long time to • The time it takes to deliver hot water from the water heater to your get hot water at the fixtures depends on the length of piping between the two. The longer fixtures. the distance or the bigger the pipes, the longer it will take to get hot water.
Owner's Guide Troubleshooting EASY-LINK SYSTEM 510C model only Buit-in controller and remote controller WATER HEATER PROBLEM Unit does not ignite when water goes through the unit. SOLUTIONS • • • • • Is the flow rate over 0.5 GPM (1.9 L/min)? (p. 33) Check the filter on cold water inlet. (p. 38) Check for reverse connection and cross connection. If you use the remote controller, is the power button turned on? Check if the inlet water temperature is too high.
Owner's Guide Troubleshooting ERROR CODES -General- • The units have self-diagnostic functions for safety and convenience when troubleshooting. • If there is a problem with the installation or the unit, the error code will be displayed on the temperature controller and remote controller. • Consult the table on the following pages for the description of each error code.
Owner's Guide Troubleshooting -Fault Analysis of Error Codes- If the error code is displayed on the computer board of the water heater or remote controller, please check the following. After checking, consult with the manufacturer.
Owner's Guide Troubleshooting Remote Green LED 651* Four Times 661* Four Times 701* 711* One Time One Time 721* Six Times 741 N/A 751 N/A 761 N/A 991 Five Times Malfunction description Diagnosis Flow adjustment • Inspect the flow adjustment valve (Part #402), for valve fault (Only connection/breakage of wires, locked motor drive due to Easy-Link & Multi-Unit scale buildup, and/or water leakage.
Owner's Guide Components Diagram COMPONENTS DIAGRAM Case assembly 003 001 052 005 003 052 463 002 004 051 710 704 053 Built-in temperature controller 722 721 056 44 Page
Owner's Guide Components Diagram Computer board assembly 110C and 310C models 711 510C model 711 701 708 701 705 705 709 708 408 407 103 714 709 403 103 402 402 402 713 402 714 707 721 061 713 707 721 712 712 Surge box assembly 121 063 703 704 705 706 705 45 Page
Owner's Guide Components Diagram Burner assembly 401 004 115 116 064 053 105 122 104 054 108 709 103 120 106 109 063 107 119 101 110 065 065 111 711 102 112 053 113 114 063 708 711 150 118 055 151 117 057 062 707 702 714 LP Conversion Kit 052 510C model 130 46 Page 131
Owner's Guide Components Diagram Water Way assembly 110C & 310C model Bypass section (510C model) 401 418 403 458 456 460 A 462 451 451 414 414 413 D To Water inlet section 452 B 453 060 To Water outlet section 458 462 C 401 453 058 412 414 418 A 416 460 456 053 B 459 454 411 D 451 414 450 462 To Water 451 inlet section 053 417 414 510C model 458 458 461 C Water outlet section 454 To Water outlet section Water inlet section 461 456 059 C 402 460 408 D
Owner's Guide Parts List PARTS LIST Item # 001 002 003 004 005 051 052 053 054 055 056 057 058 059 060 061 062 063 064 065 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 130 131 150 151 401 402 403 404 405 Part # Description Case assembly Front cover Bracket Duct unit Duct unit cover Screw M4×12 (W/Washer) Screw M4×10 (Coated) Screw M4x10 Hex head screw M4×12 (W/Washer) Hex head screw M4x8 Pan Screw M4x20 Tap tight screw M4x12 FEZN Screw M3x6 Screw M4x6 Screw M4x8
Owner's Guide Parts List Item # 406 407 408 409 410 411 412 413 414 415 416 417 418 450 451 452 453 454 455 456 457 458 459 460 461 462 463 701 702 703 704 705 706 707 708 709 710 711 712 713 714 721 722 N/A * Part # Description Inlet water filter Inlet thermistor for 110C and 310C models Inlet thermistor for 510C model Outlet thermistor for 110C and 310C models Outlet thermistor for 510C model Water outlet Outlet drain plug Heat exchanger thermistor for 510C model Hi-Limit switch for 110C and 310C models
Owner's Guide Output Temperature Chart OUTPUT TEMPERATURE CHART Chart is based on properly sized gas line Output Temperature vs. GPM (Max. 6.6 GPM) with Various Inlet Water Temperature Incoming Temp. 8.0 Output Hot Water GPM 110C 40°F(4°C) 6.0 50°F(10°C) 60°F(16°C) 70°F(21°C) 4.0 2.0 0.0 Set Temp. °F (°C) 100 (38) 105 (40) 110 (43) 115 (45) 120 (50) 125 (52) 130 (55) 135 (57) 140 (60) 40°F(4°C) 3.7 3.4 3.1 2.9 2.8 2.6 2.4 2.3 2.2 50°F(10°C) 4.4 4.0 3.7 3.4 3.1 2.9 2.
Owner's Guide Warranty LIMITED WARRANTY 1. The manufacturer warrants this product against defects in materials or workmanship as described in this document if installed within the United States or Canada.
Owner's Guide Warranty • Freeze damage that occurs without taking proper preventive measures as described in the installation manual. • Condensate damage due to improperly installed or lack of a condensate trap (drain). • Any product not installed in compliance with all applicable local & provincial codes, ordinances, and good trade practices.
