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On-Demand Water Heater
Installation Manual and Owner's Guide
ANSI Z21.10.3 • CSA 4.3
Model
160X3P
180X3P
199X3P
Gas Tankless Water Heater
Suitable for water (potable) heating only.
FEATURING
• INTEGRATED RECIRCULATION PUMP
• ENDLESS HOT WATER
• ON-DEMAND USAGE
• COMPACT, SPACE SAVING
• ENERGY CONSERVATION
• COMPUTERIZED SAFETY
• NO PILOT LIGHT
• Complies with SCAQMD Rule 1146.2 for natural gas
NOx emissions of 14 ng/J or 20 ppm.
• EASY-LINK SYSTEM
• X3™ TECHNOLOGY
Keep this manual near the water heater for future reference whenever maintenance, adjustment or service is required.
R
D
R
™
If the information in these
instructions is not followed
exactly, a fire or explosion may
result causing property damage,
WARNING
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 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.
– Installation and service must be performed
by a qualified installer, service agency or
the gas supplier.
If you have any questions,
please call or write to
USA: 500 Tennessee Waltz Parkway
Ashland City, TN 37015
1-877-737-2840
CANADA: 599 Hill Street West
Fergus, ON N1M 2X1
1-888-479-8324
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Table of Contents
Related Manuals for Takagi 160X3P
Summary of Contents for Takagi 160X3P
- Page 1 On-Demand Water Heater Installation Manual and Owner’s Guide ANSI Z21.10.3 • CSA 4.3 Model If the information in these instructions is not followed 160X3P exactly, a fire or explosion may 180X3P result causing property damage, WARNING personal injury or death.
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Page 2: Table Of Contents
CONTENTS On-Demand Water Heater Installation Manual and Owner's Guide SPECIFICATIONS ..........4 14 Electrical connection .......45 DIMENSIONS ..........5 15 Temperature remote controller ....46 Installation ..........46 SAFETY GUIDELINES........6 16 High altitude settings ......48 SAFETY DEFINITION ........6 17 Freeze protection system ......49 INTRODUCTION ..........7 18 Easy-Link System ........50 INSTALLATION ..........8 Easy link connection procedures ....51... -
Page 3: Installation Manual And Owner's Guide
Installation Manual and Owner's Guide CONGRATULATIONS Congratulations and thank you for choosing our tankless water heater. Before use, we recommend that you read through this installation manual carefully. Keep this manual for future reference. If you need an additional manual, contact the manufacturer or your local distributor. -
Page 4: Specifications
SPECIFICATIONS 160X3P 180X3P 199X3P Model (A/JT-H5JP) (A/JT-H5SP) (A/JT-H5P) Natural Gas Input Min: 9,000 Min: 9,000 Min: 9,000 BTU/h (Operating Range) Max.: 160,000 Max.: 180,000 Max.: 199,000 Propane Input Min: 9,000 Min: 9,000 Min: 9,000 BTU/h (Operating Range) Max.: 160,000 Max.: 180,000 Max.: 199,000... -
Page 5: Dimensions
DIMENSIONS Unit: Inch (mm) 6-1/4 (158.5) 17-11/16 (450) 16 (406.4) 11-3/4 (298.3) 5 (125.8) φ2.4 (60.9) φ2.4 (60.9) 5-13/16 (147) 11-1/4 (285) COLD 3-3/8 4-5/8 (85.1) (118.1) RETURN DRAIN 5-7/16 (137.6) (152) PRV HOT 5-15/16 (151.3) On-Demand Water Heater Installation Manual and Owner’s Guide... -
Page 6: Safety Guidelines
SAFETY GUIDELINES SAFETY DEFINITION Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. DANGER Indicates an imminently hazardous situation which, if not avoided, could result in death or serious injury. WARNING Indicates an imminently hazardous situation which, if not avoided, could result in minor or moderate injury. -
Page 7: Introduction
INTRODUCTION • This manual provides information necessary for the Recirculation with Dedicated Return line, On-Demand installation, operation, and maintenance of the water mode, and Crossover Valve Mode. See page 36 for addi- heater. Please read all installation instructions complete- tional information. ly before installing this product. -
Page 8: Installation
INSTALLATION Step 1: Read this section before you start... Step 1: Read this section before you start... • Installation and service must be performed by a qualified installer (for example, a licensed plumber or gas fitter). Otherwise, the warranty will be void. •... - Page 9 INSTALLATION Step 1: Read this section before you start... heater can be direct vented. WARNING! • • Do not install the unit where the exhaust vent is pointing • Follow all local codes, or in the absence of local into any opening in a building or where the noise may codes, follow the current edition of the National disturb your neighbors.
- Page 10 INSTALLATION Step 1: Read this section before you start... Do not have the vent terminal pointing toward any Do not install the heater where water, debris or flamma- ble vapors may get into the flue terminal. This may cause opening into a building. Do not locate your heater damage to the heater and void the warranty.
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Page 11: Familiarize Yourself With The Components
INSTALLATION Step 2: Familiarize yourself with the components. Step 2: Familiarize yourself with the components. Included items Communication LP gas conversion Wall mounting Screws for Manual cartridge Pressure relief valve ™ cable bracket vent ports Qty: 2 Optional items Indoor Outdoor Model √... -
Page 12: Installation Environment And Unit Clearances
INSTALLATION Step 3: Installation environments and unit clearances Step 3: Installation environment and unit clearances Installation environment Unit clearances Warning! Do not store or use flammable Warning! Maintain all clearances around the materials, vapors, or liquids in the same location water heater. -
Page 13: Mounting The Water Heater
INSTALLATION Step 4: Mounting the water heater Step 4: Mounting the water heater 1. Secure the wall mounting bracket with 4 screws to 3. Secure the water heater firmly fastening the wall studs. Make sure to level the bracket. appropriate screws into the upper bracket/bottom brackets of the water heater and wall. -
Page 14: General Instructions Of Venting
INSTALLATION Step 5: General instructions of venting Step 5: General instructions of venting • 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. -
Page 15: How To Install Venting Into The Water Heater
INSTALLATION Step 5: General instructions of venting How to install venting into the water heater • When inserting the pipe into the exhaust/intake port, make sure that the pipe end is cut straight and positioned properly under the o-ring to seal the connection firmly. •... -
Page 16: Dip Switch Settings For The Vent Style
INSTALLATION Step 5: General instructions of venting DIP switch settings for the vent style Set the DIP switch as shown in the following for your vent style. If your vent style is out of the range of the upper table, change the DIP switches as shown in the lower table. WARNING! Before changing the DIP switches, make sure that there is no power supply, gas supply, and water supply. -
Page 17: Combustion Air Supply
INSTALLATION Step 6: Combustion air supply Step 6: Combustion air supply This gas water heater requires an adequate source of clean air for combustion and ventilation. Without sufficient air, your water heater may not operate properly and may emit excessive and abnormal amounts of carbon monoxide which may result in carbon monoxide poisoning or WARNING death. - Page 18 INSTALLATION Step 6: Combustion air supply Your water heater’s BTU/h rating is on the rating plate. The BTU/h ratings should be on the other appliances’ rating plates. If you have trouble determining the BTU/h ratings, contact the manufacturer or have a qualified person determine the ventilation requirements.
- Page 19 INSTALLATION Step 6: Combustion air supply Determine type of ventilation There are several types of ventilation that can be used. The various options are listed below. See also the illustra- tions on the next page. 1. Direct to outdoors (See Figures 1&2) 2.
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Page 20: Combustion Air Supply Options
INSTALLATION Step 6: Combustion air supply Combustion air supply options Gable vent to outdoors Install above insulation 12” (305 mm) Outlet air to Confined maximum attic 1 in (6.5 cm Space per 4,000 btu/h Two permanent Openings Confined Alternate 1 in (6.5 cm Space Inlet air from... -
Page 21: Direct Vent Air Intake Moisture Protection
INSTALLATION Step 6: Combustion air supply Direct vent air intake moisture protection The air intake piping in a direct vent system will normally not have any moisture accumulation in it. However, in certain cases, moisture may build up and needs to be drained. Typical situations include, but are not limited to: •... -
Page 22: Exhaust Vent For Indoor Installation
INSTALLATION Step 7: Exhaust vent for indoor installation Exhaust vent for indoor installation Step 7: ❶ ABS, PVC, CPVC or polypropylene vent The Indoor model can be vented with ABS, PVC, CPVC, or polypropylene (temperature rated up to 149°F). In Canada, plastic venting must be certified to ULC S636 standards. -
Page 23: Direct Vent Installation Examples
INSTALLATION Step 7: Exhaust vent for indoor installation ❶-1 Direct Vent installation examples Horizontal Installation Vertical Installation Hanger Roof flashing Fire stop ❶-2 Power Vent installation examples Vertical Installation Horizontal Installation Roof Hanger flashing Fire stop On-Demand Water Heater Installation Manual and Owner’s Guide... -
Page 24: Vent Terminations
INSTALLATION Step 7: Exhaust vent for indoor installation ❶-3 Vent terminations Low profile termination If it is used in vertical position, the exhaust port should be placed in the upper side. IPEX System 1738® Vent Pipe Size PVC Kit Number IPEX PVC Part Number PVC Part Number 2"... - Page 25 INSTALLATION This page is intentionally blanked. On-Demand Water Heater Installation Manual and Owner’s Guide...
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Page 26: Clearance
INSTALLATION Step 8: Clearances Clearances Step 8: -Vent termination clearances- Inside corner = Vent terminal detail = Air supply inlet = Area where the terminal is not permitted Fixed Operable Fixed closed closed Operable Regulator/Gas meter vent outlet Canada Installations US Installations Direct vent and other than direct vent Direct vent Other than direct vent... -
Page 27: Clearances For Sidewall Terminations
INSTALLATION Step 8: Clearances -Clearances for sidewall terminations- Improper installation can result in carbon monoxide poisoning or death. Follow all local and national codes in regards to proper termination clearances. In the absence of such codes, the clearances below can be used as guidelines. Local codes supersede these guidelines. WARNING Multiple Sidewall Terminations An exhaust termination must be at least:... -
Page 28: Clearances For Rooftop Terminations
INSTALLATION Step 8: Clearances -Clearances for rooftop terminations- Follow all local and national codes in regards to proper termination clearances. In the absence of such codes, the clearances below must be met. Local codes supersede these clearances. Failure to observe this warning may result in severe personal injury or death. WARNING Canadian requirements differ from the guidelines in this section. -
Page 29: Outdoor Installation
INSTALLATION Step 9: Outdoor installation Step 9: Outdoor installation 2. Turn the rain guard panel (inside the water heater). Without recess box Remove the front cover and remove the built-in controller panel from the holder. Outdoor Vent Cap 100320424 (TH-VC05) is required. Included items 100320424 (TH-VC05) Locate the rain guard panel at the bottom of the unit as... - Page 30 INSTALLATION Step 9: Outdoor installation Secure the rain guard panel with the two screws diagonally 4. Junction box replacement from outside of the case. (Save the left over screw.) The provided junction box will be installed in the location show in the figure below. See the Electrical Connections sec- tion in your manual for the steps necessary for the complete outside installation.
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Page 31: Gas Supply And Gas Pipe Sizing
INSTALLATION Step 10: Gas supply and gas pipe sizing Step 10: Gas supply and gas pipe sizing • Check that the type of gas matches the rating plate first. • Ensure that any and all gas regulators used are operating properly and providing gas pressures within the specified range shown below. -
Page 32: Natural Gas Supply Piping
Based on Energy Content of 1,000 BTU/Cubic ft: The water heater requires 199 ft /h for the 199X3P, 180 ft /h for the 180X3P, 160 ft /h for the 160X3P. The following tables are from ANSI Z223.1/NFPA 54. Unit: Cubic feet per hour Length... -
Page 33: Lp Gas Conversion
INSTALLATION Step 11: LP gas conversion Step 11: LP gas conversion This water heater is configured for Natural Gas from the factory. However, if a field conversion to Propane Gas is neces- sary, the conversion kit supplied with the water heater must be used and installed by a qualified service agency*. Before you install the components in this Propane Gas conversion kit, verify the type of gas that will be used to fuel the unit. - Page 34 INSTALLATION Step 11: LP gas conversion 8. Install the LP orifice plate and gasket on the gas solenoid valve assembly as shown in Figure 5. Secure the orifice plate by hand tightening the 2 screws. Ensure that the orifice, gasket and two screws are in good condition and not compromised in any way.
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Page 35: Check Combustion Status
(Go back to the step 21 of Gas conversion procedure.) - CO value - Models for 160X3P 180X3P 199X3P Propane 10.2 ± 0.5 10.2 ±... -
Page 36: Water Connections
INSTALLATION Step 12: Water connections Water connections Step 12: 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! WARNING Do not reverse the hot outlet and cold inlet connections to the water heater. -
Page 37: Recirculation Pump Modes
INSTALLATION Step 12: Water connections RECIRCULATION PUMP MODES: The X3P water heater comes with an integrated recirculation pump. The water heater has 3 recirculation mode options; Recirculation with a dedicated return line (default), On-Demand mode compliant with California’s Title 24, and Crossover recir- culation mode. -
Page 38: Standard Recirculation
INSTALLATION Step 12: Water connections • Check valves must be installed on both of the cold water line and return line. Please refer to NOTICE the diagram below. • Check valves aren't necessary for the crossover install. • Insulate the hot water supply line and dedicated return line to prevent heat loss. •... -
Page 39: Recirculation With Cross Over Valve
INSTALLATION Step 12: Water connections STANDARD NON-RECIRCULATION MULTIPLE UNIT SIDE VIEW PIPING CONFIGURATION CARTRIDGE ™ COLD NOT SHOWN WATER FOR CLARITY) SUPPLY EXPANSION TANK HOT WATER TO FIXTURES -Recirculation with cross over valve- STANDARD RECIRCULATION WITH CROSS OVER VALVE SINGLE UNIT PIPING CONFIGURATION VENT SIDE VIEW CARTRIDGE... - Page 40 INSTALLATION Step 12: Water connections • Before changing pipes and DIP switch settings, make sure that electrical power and gas service and water supply to the water heater are turned OFF. Failure to do so may result in bodily injury, death, or property damage. •...
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Page 41: Installation W/O Recirculation
INSTALLATION Step 12: Water connections 7. Reattach Joint "B" using the image below as a reference guide. 9. Locate and remove the sheet metal panel and screw securing Note the orientation of Joint"B", one side of the pipe is longer the printed circuit board. -
Page 42: X3 Tm Technology
INSTALLATION Step 12: Water connections Technology- ™ This water heater is equipped with X3 Scale Reduction Technology to inhibit scale formation within the heat ™ exchanger tubing of this unit. Part of the X3 Technology’s anti-scale protection comes from the special X3 ™... -
Page 43: Pressure Relief Valve
• The discharge capacity must be at least 199,000 BTU/h for the 199X3P model, 180,000 BTU/h for the 180X3P model,160,000 BTU/h for the 160X3P model, • The pressure relief valve needs to be rated for a maximum of 150 psi (1 MPa). -
Page 44: Condensate Drain
INSTALLATION Step 13: Condensate drain Step 13: Condensate drain • An accessory Neutralizer assembly (100112159/TH-NT01) is sold separately. (Refer to p. 11.) • In the absence of applicable local codes and regulations, the manufacturer recommends that condensate be disposed of into a drain. Connect a drain tube from the condensate drain port (shown below) located on the bottom of the water heater to a standard drain. -
Page 45: Electrical Connection
INSTALLATION Step 14: Electrical connections Step 14: Electrical connections • Follow the electrical code requirements of the local authority having jurisdiction. In the absence of such requirements, follow the current edition of the National Electrical Code ANSI/NFPA 70 in the U.S. or the current edition of CSA C22.1 Canadian Electrical Code Part 1 in Canada. •... -
Page 46: Temperature Remote Controller
INSTALLATION Step 15 Temperature remote controller Temperature remote controller (100276687/TM-RE43) Step 15: The remote control is an optional accessory that can be installed remotely, to allow for temperature adjustment • without having to go to the heater. When installed, the remote will take priority over the built-in controller of indoor models. •... - Page 47 INSTALLATION Step 15: Temperature remote controller Fig. D-1 Open the Plastic cover and tighten the two Fork terminals beneath the two Remote controller terminal screws on the back of the Main unit (Fig. D-1). Cut out the inlet for the cable from the Plastic Back side of the remote bottom of the main unit (Fig.
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Page 48: High Altitude Settings
INSTALLATION Step 16: High altitude settings Step 16: High altitude settings • The maximum certified or allowable installed altitude is 10,100 ft (3,078 m). • To adjust high altitude settings, adjust only the No. 2, No. 3, and No. 4 DIP switches in the MIDDLE bank of DIP switches. -
Page 49: Freeze Protection System
INSTALLATION Step 17: Freeze protection system Step 17: Freeze protection system • To set pump operation for freeze protection, adjust only the No. 4 DIP switch in the UPPER bank of DIP switches. (See below.) DO NOT adjust the other DIP switches. •... -
Page 50: Easy-Link System
The water heater can be connected to the same or a specified model in an Easy-Link System as shown in the table below. • The built-in Easy-Link System allows up to 2 units (160X3P and 180X3P) or 4 units (199X3P) to manifold together. The table below shows the allowable combinations. -
Page 51: Easy Link Connection Procedures
When the 160X3P/180X3P/199X3P model is the “PARENT” unit, the only controller that can be used is the 100276687 (TM-RE43). 3. Select a 160X3P/180X3P/199X3P unit to be the “PARENT” unit. The “PARENT” unit should be one of the end units. -
Page 52: Getting Started
GETTING STARTED 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;... - Page 53 GETTING STARTED Initial Operation (cont.) Steps 6-8 are only for standard recirculation installations. Go to step 9 for applications using the cross over valve or when the pump will not be used. Start pump operation test by built-in controller or remote controller. If your water heater is installed outdoors without the optional remote controller, remove the front cover to operate the built-in controller after removing the four screws when operation on the controller is required.
- Page 54 GETTING STARTED Initial Operation (cont.) After finishing the pump operation test, complete the following procedures. (Refer to pp. 58 to 62): • Set outlet water temperature • Setting the time • Pump operation timers • Setting pump timers • Selecting a pump timers On-Demand Water Heater Installation Manual and Owner’s Guide...
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Page 55: 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 appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner. - Page 56 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: Vapors: 1.
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Page 57: Operation
OPERATION Controller settings Controller settings The illustration below shows an example of the controllers. When it is installed outdoors without the optional remote controller, remove the front cover to operate the built-in controller if necessary. We would strongly recommend that the optional remote controller should be installed when it is installed outdoors. Built-in controller Remote controller Description... -
Page 58: Set Outlet Water Temperature
OPERATION Controller settings -Set outlet water temperature- Controllers Operation Built-in controller Remote controller Turn on the 120 VAC power supply to the unit. Press the "ON/OFF" button on the controller in order to turn the controller on. When ON, the STAND BY LED is lit. It shows the set temperature of output water on its (EX.: 120°F) display as shown in the picture on the right. -
Page 59: Setting The Time
OPERATION Controller settings -Setting the time- Controllers Operation Built-in controller Remote controller Turn on the 120 VAC power supply to the unit. Press the "TIME" button on the controller in order to set the time. This operation is available regardless of ON/ OFF setting of the controller. -
Page 60: Setting Pump Timers & Operation
OPERATION Controller settings - Setting pump timers & operation - Controllers Operation Built-in controller Remote controller Turn on the 120 VAC power supply to the unit. Press and hold the "PUMP" button on the controller for at least 3 seconds to enter the pump timer setting mode. - Page 61 OPERATION Controller settings Controllers Operation Built-in controller Remote controller Press the "HOT" button or "COLD" button to select the time. Press and hold the "HOT" or "COLD" button to adjust the time more quickly. NOTICE: The time is displayed in twenty-four hour clock time. For example, 11:00 is 11:00 a.m.
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Page 62: Selecting A Pump Timer
OPERATION Controller settings Controllers Operation Built-in controller Remote controller The following steps will set the temperature drop that must occur before the recirculation pump will turn off °F Temperature drop below set temp. at which pump turns off °C *Preset at the factory. (Default) Press the "HOT"... -
Page 63: Display Example
OPERATION Controller settings -Display example- The display on the controller indicates which PUMP TIMER is set by displaying a number below the time: 1, 2, or 12. (12 indicates PUMP TIMER 1 and PUMP TIMER 2.) The arrow to the right of ON or OFF indicates the current status of the PUMP TIMER(s). If the current time falls within the time range set for a PUMP TIMER, the arrow will point toward ON. -
Page 64: On-Demand Pump Operation
OPERATION Controller settings -On-Demand Pump Operation- The On-Demand pump operation complies with California's Title 24. This operation runs the pump and fires the water heater each time the “PUMP” button on the heater's built-in controller or optional remote controller is pushed. -
Page 65: Information Mode
OPERATION Controller settings -Information mode- You can get some information about the water heater condition by pressing the "INFO" button. For more informa- tion, follow the procedures below: Controllers Operation Built-in controller Remote controller Press the "INFO" button on the controller to enter the information mode. -
Page 66: Pcb Settings
OPERATION PCB settings PCB settings -SETTING THE TEMPERATURE ON THE PCB- (WITHOUT BUILT-IN CONTROLLER or REMOTE CONTROLLER) • To set the temperature, adjust only the No. 5 DIP switch in the MIDDLE bank of DIP switches. (See below.) DO NOT adjust the other DIP switches. •... -
Page 67: Maintenance And Service
MAINTENANCE AND SERVICE -Regular maintenance- • Turn off the electrical power supply and close the manual gas shutoff valve and the manual water control valve before servicing. • Failure to do so could result in severe personal injury, or death. WARNING •... -
Page 68: Water Filter Cleaning
MAINTENANCE AND SERVICE Pressure port Figure 1 Figure 2 Figure 3 Figure 4 4. Remove the screw from the pressure port which is located on the gas inlet of the water heater. (Figure 2) 5. Connect the manometer to the pressure port and zero the manometer. (Figure 3) 6. -
Page 69: Rain Protection Tray Cleaning
-Rain protection tray cleaning- Rain protection tray The rain protection tray has a screen to prevent lint or dust from entering into the water heater. Lint and dust built up on the screen can reduce the air supply for com- bustion. -
Page 70: Troubleshooting
TROUBLE SHOOTING PROBLEM SOLUTIONS It takes a long time to • Check to see if a pump operation timer of recirculation is active. If not, it will take get hot water at the time for the hot water to get from the heater to the fixture. (pp. 59 to 62) fixtures. -
Page 71: Error Code
TROUBLE SHOOTING Error code Error code • 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 built-in controller or remote controller. -
Page 72: How Error Codes Display In An Easy-Link System
TROUBLE SHOOTING Error code -How error codes display in an Easy-Link System- Error codes will be displayed differently with units installed in an Easy-Link System. It will show both the error code and which unit has the error code. Below is an example of how the error code of "321" is displayed in an Easy-Link System. -
Page 73: Fault Analysis
TROUBLE SHOOTING Fault analysis Fault analysis The following list contains error codes, their descriptions, and items to check. If you are not qualified or com- fortable performing any of the checks below, contact a qualified service agent or the manufacturer’s Technical Assistance Line. - Page 74 TROUBLE SHOOTING Fault analysis Green Malfunction Remote Diagnosis description Flame rod failure • Check for connection/breakage of wires (Part #709) and/or soot on the Flame rod (Part #108). Flashes Flow sensor failure • Check for connection/breakage of wires (Part #402, 715). •...
- Page 75 TROUBLE SHOOTING Fault analysis Green Malfunction Remote Diagnosis description Communication • Check if the connections between the parent unit and the child units are cor- rect. Refer to pp. 50 and 51. error in Easy-Link • Check the Child units for power. Troubleshoot any Child units without power. •...
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Page 76: Repair Parts
REPAIR PARTS Component diagram Component diagram Case assembly Surge box assembly Built-in controller On-Demand Water Heater Installation Manual and Owner’s Guide... - Page 77 REPAIR PARTS Component diagram Computer board assembly 715 715 Flow Flow Adjust Sensor Valve Pressure Sensor Bypass Valve Increase bu�on MAX bu�on MIN bu�on Air damper Decrease bu�on Exhaust thermistor DIP switches Pump Remote controller Built-in controller limit Return thermistor Igniter Ground Heat exchanger...
- Page 78 REPAIR PARTS Component diagram Gas line Fan motor assembly 123 455 Gas inlet Burner assembly On-Demand Water Heater Installation Manual and Owner’s Guide...
- Page 79 REPAIR PARTS Component diagram Water way 1 Hi-limit switch Heat exchanger 136 434 458 462 Exhaust duct assembly On-Demand Water Heater Installation Manual and Owner’s Guide...
- Page 80 REPAIR PARTS Component diagram Water way 2 Bypass valve Pump & return inlet X3™ connection Water outlet Water inlet On-Demand Water Heater Installation Manual and Owner’s Guide...
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Page 81: Parts List
100320379 SCM manifold assembly 100314460 Venturi body 100320520 3 way connection - Bypass, heat exchanger 100320517 Oval ring NBR 100320381 Computer board 160X3P 100320425 Orifice gasket 100320382 Computer board 180X3P 100320426 Gas solenoid valve assembly 100320383 Computer board 199X3P 100320427... -
Page 82: Output Temperature Chart
The chart is based on a properly sized gas line and installation at 0-2,000 ft (0-610 m). The water heater will de-rate 4% per 1,000 ft (305 m) of elevation increase above 3,000 ft (914 m.) 160X3P Output Temperature vs. GPM (Max. 6.6 GPM) with Various Inlet Water Temperature (L/M) 30.0... - Page 83 OUTPUT TEMPERATURE CHART 199X3P Output Temperature vs. GPM (Max. 10.0 GPM) with Various Inlet Water Temperature (L/M) 12.0 45.0 10.0 30.0 15.0 Set temp °F (°C) (38) (40) (43) (45) (50) (52) (55) (57) (60) 40°F (4°C) (24.1) (22.2) (20.7) (19.3) (18.1) (17.0)
- Page 84 7J8071-1 2000570774 (REV. B)
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