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Installation Manual and Owner’s Guide ANSI Z21.10.3 ・ CSA 4.3 540H only Models If the information in these instructions is not followed 140H exactly, a fire or explosion may 240H result causing property damage, WARNING personal injury or death. 340H...
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Contents CONTENTS Installation Manual Owner's Guide SPECIFICATIONS ..........4 OPERATING SAFETY ........47 INTRODUCTION ..........5 NORMAL OPERATION ........49 SAFETY GUIDELINES........6 BUILT-IN CONTROLLER SAFETY DEFINITION ........6 AND REMOTE CONTROLLER ....49 GENERAL ............6 GENERAL ............49 INSTALLATION ..........7 OUTLET WATER TEMPERATURE GENERAL ............7 SETTING .............50 CLEARANCES ..........9 TEMPERATURE TABLE OF CONTROLLER .50 INCLUDED ACCESSORIES ......9...
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Owner's Guide 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 owner's guide carefully. Keep this manual for future reference. If you need an additional manual, contact the manufacturer or your local distributor.
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 appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner.
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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. Do not install water heater where flammable products will be stored or used unless the main burner is at least 18”...
Normal Operation NORMAL OPERATION BUILT-IN CONTROLLER AND REMOTE CONTROLLER The illustration below shows an example of the controllers. The exact display may differ from examples. 140H built-in controller display is same orientation as remote controller image as shown below. Built-in controller...
The remote will emit a beep and change to 145 °F (63 °C). 4. Press the "HOT" button to set up to 160 °F (70 °C). TEMPERATURE TABLE OF CONTROLLER a) For 140H, 240H and 340H models °F 100 105 110 115 120* 125 130 135 140 °C...
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 Operation Button Built-in controller Remote controller Inlet water temperature will be Inlet water temperature 1st.
FLOW Household Flow Rates • The flow rate through the water heater is limited to a maximum of 7.0 GPM (26.5 L/min) for the 140H model, a Flow rate Appliance/Use maximum of 6.6 GPM (25 L/min) for the 240H model, 8.0...
Owner's Guide Normal Operation FREEZE PROTECTION SYSTEM • This water heater comes equipped with heating blocks to protect it from damage associated with freezing. When the freeze protection thermostat senses air temperature below 36.5 °F (2.5 °C), the blocks will heat up to prevent freezing of the unit.
Owner's Guide Maintenance and service MAINTENANCE AND SERVICE • 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 The following maintenance is required for the proper operation of water heaters.
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Unscrew this drain plug to drain the water line as well. 8. Securely screw the drain plugs back into place. Hand- tighten only. 140H 240H/340H/540H Drain plug Drain plug...
Measure gas supply pressure at minimum heater operation: Reduce water flow so the heater is running at minimal operation. Press the MIN button on the computer board. (Refer to the diagrams below.) Take a supply gas pressure reading and verify that it is within the specified inlet gas pressure range. 140H/240H/340H 540H MIN button...
Owner's Guide Troubleshooting TROUBLESHOOTING PROBLEM SOLUTIONS It takes a long time to • The time it takes to deliver hot water from the water heater to your fixtures get hot water at the depends on the length of piping between the two. The longer the distance or fixtures.
The green LED on the computer board will flash in a pattern shown on the next page. • Consult the table on the following pages for the description of each error code. 140H/240H/340H 540H Error code indicator on the built -in...
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Owner's Guide Troubleshooting -Single unit Installation- Example: If your unit has a “321” error code (which signifies an inlet thermistor failure) • Indicator on the built-in controller or remote controller : “321” will be displayed on the screen. Error code •...
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421, 423). • Ensure that any horizontal drain line runs are sloped downward. Removal any sags in the drain line. 311* 140H/240H/340H: Outlet Thermistor Failure Flashes 540H: Heat Exchanger • Check for connection/breakage of wires and/or debris on thermistor (Part Thermistor Failure #407, 408, 411, 715).
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Owner's Guide Troubleshooting Controller Green Malfunction Diagnosis description 331* Outlet thermistor fail- ure (540H only) Flashes • Check for connection/breakage of wires and/or debris on thermistor (Part 341* Exhaust thermistor failure #407, 408, 411, 715, 718 721). (Indoor models only) Flashes 391* Air-fuel ratio rod fail-...
Owner's Guide Components Diagram Computer board assembly Surge box assembly 140H 140H Indoor model Outdoor model Wiring diagram Indoor only Heater (for the secondary heat exchanger) Heaters (for the heat exchanger and water pipes) 140H (for the drain hose) (for the water pipes)
Owner's Guide Parts list PARTS LIST Model Item # Description 140H 240H 340H 540H Case assembly Indoor Case assembly Outdoor Front cover Indoor 100074663 100074665 Front cover Outdoor 100074664 100074666 Intake air port assembly 100076311 100074667 Bracket Junction box 100074668...
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100337321 100074672 Fan motor for Indoor model 100074606 Fan motor for Outdoor model 100074228 Burner gasket 100074216 Fan damper for Indoor model (140H: Outdoor) 100074466 Fan damper for Indoor model (140H) 100076511 Burner window 100074218 Rod holder gasket 100074219 Flame rod...
4% per 1,000 ft (305 m) of elevation increase above 2,000 ft (914 m). To reduce the risk of scalding, install Thermostatic Mixing Valves (temperature limiting valves) at each point of use. 140H model Output Temperature vs. GPM (Max. 7.0 GPM) with Various Inlet Water temperature (L/M) 30.0...
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Owner's Guide Output Temperature Chart 340H model Output Temperature vs. GPM (Max. 8.0 GPM) with Various Inlet Water temperature (L/M) 10.0 40°F(4°C) 50°F(10°C) 60°F(16°C) 70°(21°C) Set temp.°F(°C) (38) (40) (43) (45) (50) (52) (55) (57) (60) 40°F(4°C) (21.6) (19.9) (18.5) (17.3) (16.2) (15.2)
C O M M E R C I A L - G R A D E RESIDENTIAL / COMMERCIAL GAS WATER HEATERS TANKLESS CONDENSING HIGH EFFICIENCY Ultra-Low NOx gas tankless water heaters with condensing technology featuring up to 0.95 INDOOR MODELS Uniform Energy Factor (UEF) which lowers operating costs and is environmentally friendly.
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C O M M E R C I A L - G R A D E RESIDENTIAL / COMMERCIAL GAS WATER HEATERS Gas Consumption Input Inlet Gas Pressure Dimensions in Inches Approx Ship- Maximum Hot/Cold Model Number Type ping Weight Minimum Maximum Minimum in.
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C O M M E R C I A L - G R A D E RESIDENTIAL / COMMERCIAL GAS WATER HEATERS FLOW RATE vs TEMPERATURE RISE PRESSURE LOSS 240 MODEL 240H 340H 240H Pressure Loss Flow Rate vs. Temperature Rise Flow Rate vs.
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C O M M E R C I A L - G R A D E RESIDENTIAL / COMMERCIAL GAS WATER HEATERS TANKLESS CONDENSING HIGH EFFICIENCY SPECIFICATIONS The fully modulating, on-demand, condensing gas fired tankless water heater(s) shall be State model GTS540, having a maximum input rating of 199,000 Btu/h and available in NG or LP.
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For Residential and Commercial Applications Job Name Engineer / Architect Job Location Wholesaler Submittal Date Contractor TWV30 /TWV3S Tankless Water Heater Hot/Cold Service Valves Use: For use in potable water distribution systems for water flow control.
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TWV30 /TWV3S Tankless Water Heater Hot/Cold Service Valves Standard Part Listing: TWV30 3/4” IPS x 3/4” IPS Hot/Cold Service Valves Only TWV30R 3/4” IPS x 3/4” IPS Hot/Cold Service Valve Kit w/ 200K Pressure Relief Valve TWV3S 3/4” Sweat x 3/4” IPS Hot/Cold Service Valves Only TWV3SR 3/4”...
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provide vertical concentric vent kits. STALLAT TION IN NSTRU UCTION ‐CVPVC 3” Sid dewall D Direct‐Ve ent Conc centric Te erminat ion Kit Conc centric termina ation Included d Items 1” minimum ...
INSTALLATION INSTRUCTIONS Concentric vent kit assembly 1. Once the proper location has been determined, cut a hole in the wall large enough to accommodate the outer pipe. 2. Solvent cement the inner pipe to the concentric Y‐fitting. 3. Solvent cement the outer pipe to the concentric Y‐fitting. 4. Slide the assembly through the wall penetration. 5. To permanently affix the termination cap, it should be solvent cemented to the inner pipe. For installations where removal of the cap may be required for service or cleaning, it can be fastened mechanically with the supplied screw & nut set. For either installation method, the outer pipe is only a ...
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C O M M E R C I A L - G R A D E RESIDENTIAL / COMMERCIAL GAS WATER HEATERS TANKLESS CONDENSING HIGH EFFICIENCY Ultra-Low NOx gas tankless water heaters with condensing technology featuring up to 0.95 INDOOR MODELS Uniform Energy Factor (UEF) which lowers operating costs and is environmentally friendly.
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C O M M E R C I A L - G R A D E RESIDENTIAL / COMMERCIAL GAS WATER HEATERS Gas Consumption Input Inlet Gas Pressure Dimensions in Inches Approx Ship- Maximum Hot/Cold Model Number Type ping Weight Minimum Maximum Minimum in.
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C O M M E R C I A L - G R A D E RESIDENTIAL / COMMERCIAL GAS WATER HEATERS FLOW RATE vs TEMPERATURE RISE PRESSURE LOSS 240 MODEL 240H 340H 240H Pressure Loss Flow Rate vs. Temperature Rise Flow Rate vs.
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C O M M E R C I A L - G R A D E RESIDENTIAL / COMMERCIAL GAS WATER HEATERS TANKLESS CONDENSING HIGH EFFICIENCY SPECIFICATIONS The fully modulating, on-demand, condensing gas fired tankless water heater(s) shall be State model GTS540, having a maximum input rating of 199,000 Btu/h and available in NG or LP.
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For Residential and Commercial Applications Job Name Engineer / Architect Job Location Wholesaler Submittal Date Contractor TWV30 /TWV3S Tankless Water Heater Hot/Cold Service Valves Use: For use in potable water distribution systems for water flow control.
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TWV30 /TWV3S Tankless Water Heater Hot/Cold Service Valves Standard Part Listing: TWV30 3/4” IPS x 3/4” IPS Hot/Cold Service Valves Only TWV30R 3/4” IPS x 3/4” IPS Hot/Cold Service Valve Kit w/ 200K Pressure Relief Valve TWV3S 3/4” Sweat x 3/4” IPS Hot/Cold Service Valves Only TWV3SR 3/4”...
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provide vertical concentric vent kits. STALLAT TION IN NSTRU UCTION ‐CVPVC 3” Sid dewall D Direct‐Ve ent Conc centric Te erminat ion Kit Conc centric termina ation Included d Items 1” minimum ...
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INSTALLATION INSTRUCTIONS Concentric vent kit assembly 1. Once the proper location has been determined, cut a hole in the wall large enough to accommodate the outer pipe. 2. Solvent cement the inner pipe to the concentric Y‐fitting. 3. Solvent cement the outer pipe to the concentric Y‐fitting. 4. Slide the assembly through the wall penetration. 5. To permanently affix the termination cap, it should be solvent cemented to the inner pipe. For installations where removal of the cap may be required for service or cleaning, it can be fastened mechanically with the supplied screw & nut set. For either installation method, the outer pipe is only a ...
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Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials with- out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
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