Westinghouse Premium WGRT 199 Series Installation, Start-Up, Maintenance, Parts, Warranty
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Westinghouse Premium WGRT 199 Series Installation, Start-Up, Maintenance, Parts, Warranty

Residential tankless water heaters
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Installation
Start-Up
Maintenance
Parts
Warranty
WGRT**150 / WGRT**199 Models
** "NG" Denotes Natural Gas; "LP" Denotes Propane Gas
This manual must only be used by a qualified installer / service technician. Read all instructions in this manual before installing.
Perform steps in the given order. Failure to do so could result in substantial property damage, severe personal injury, or death.
Improper installation, adjustment, alteration, service, or maintenance could void product warranty and cause property
damage, severe personal injury, or death.
California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth
defects, or other reproductive harm.
The manufacturer reserves the right to make product changes or updates without notice and will not be held liable for
typographical errors in literature.
The surfaces of these products contacted by potable (consumable) water contain less than 0.25% lead by weight as required
by the Safe Drinking Water Act, Section 1417.
NOTE TO CONSUMER: PLEASE KEEP ALL INSTRUCTIONS FOR FUTURE REFERENCE.
www.westinghousewaterheating.com
Residential
Tankless Water Heaters
whl-004 Rev. 000 Rel. 013 Date 5.1.18

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  • Page 1 Residential Tankless Water Heaters Installation Start-Up Maintenance Parts Warranty WGRT**150 / WGRT**199 Models ** “NG” Denotes Natural Gas; “LP” Denotes Propane Gas This manual must only be used by a qualified installer / service technician. Read all instructions in this manual before installing. Perform steps in the given order.
  • Page 2 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 •...
  • Page 3 Foreword For the Installer This manual is intended to be used in conjunction with other This water heater must be installed by qualified and licensed personnel. literature provided with the water heater. This includes all related The installer should be guided by the instructions furnished with the control information.

  • Page 4: Table Of Contents

    Table of Contents Part 9 - Controls Part 1 - General Safety Information A. Control and Display Overviews A. Operation and Installation Warnings B. Start-Up Sequence B. Improper Combustion C. Changing the DHW Set-Point C. Gas D. Changing the Temperature Indicator D.
  • Page 5 DO NOT alter or modify the water heater or water heater controls. in or out of the vent system. Altering any Westinghouse water heater with parts not manufactured DO NOT store or place newspapers, laundry, or other combustible by Westinghouse WILL INSTANTLY VOID the water heater warranty items near the water heater or the exterior exhaust gas outlet and/ and could result in property damage, personal injury, or death.

  • Page 6: Improper Combustion

    Damages resulting from incorrect installation or from • To avoid severe burns, allow water heater and associated use of products not approved by Westinghouse ARE NOT covered equipment to cool before servicing. by warranty. • Do not use petroleum-based cleaning or sealing compounds in a water heating system.

  • Page 7: Water Temperature Adjustment And Scalding

    H. High Elevation Installations G. Water Temperature Adjustment and Scalding This water heater can deliver scalding water. Be careful whenever using Natural gas at high elevation might contain less heating value than hot water to avoid scalding typical 1,000 BTU/cu ft and therefore can cause improper air / gas injury.

  • Page 8: Part 2 - Before You Start

    2 screens (3” Mesh included with 199 Models - 7850P-085) Table 4 - Included with the Water Heater B. Optional Equipment Optional equipment available from Westinghouse (and Part #): Optional Parts Cascade Communication Cable (7850P-093) 150 PSI Pressure Relief Valve (7850P-103) 3/4”...

  • Page 9: Part 3 - Prepare The Water Heater Installation

    Part 3 - Prepare the Water Heater Installation Remove all sides of the shipping crate to allow the heater to be moved into its installation location. The service life of the water heater’s exposed metallic surfaces, such as the casing, as well as internal surfaces, such as the heat COLD WEATHER HANDLING - If the water heater has been stored exchanger, are directly influenced by proximity to damp and salty in a very cold location (BELOW 0...

  • Page 10: Leveling

    B. Leveling D. Residential Garage and Closet Installations Check with your local Authority Having Jurisdiction for In order for the condensate to properly flow out of the collection requirements when installing the water heater in a garage or closet. system, the area where you locate the heater must be level. Location Please read the entire manual before attempting installation.

  • Page 11: Power Venting, Indoor Combustion Air In Confined Or Unconfined Space

    Different vent terminals can be used to simplify and eliminate a hard wired carbon monoxide detector with an alarm and battery multiple penetrations in the building structure (see Optional back-up is installed on each additional level of the dwelling, building, Equipment in Venting Section).

  • Page 12: Removing A Heater From A Common Vent System

    Products to Avoid Areas Likely to Have Contaminants Spray cans containing fluorocarbons Dry cleaning / laundry areas and establishments Permanent wave solutions Swimming pools Chlorinated waxes / cleaners Metal fabrication plants Chlorine-based swimming pool chemicals Beauty shops Calcium chloride used for thawing Refrigeration repair shops Sodium chloride used for water softening Photo processing plants...

  • Page 13: Technical Specifications

    I. Technical Specifications Model Installation Indoor, Wall Hung, Fully Condensing Minimum / Maximum Input (Btu/Hr) 15,000 / 150,000 19,900 / 199,000 F Rise 8.1 GPM 11 GPM Hot Water Capacity F Rise 6.3 GPM 8.5 GPM F Rise 3.7 GPM 5 GPM Flue System Category IV, Sealed Combustion Direct Vent, Power Vent...
  • Page 14 Figure 2 - 150 Model Dimensions Description Diameter Exhaust Outlet Adapter 2” Air Intake Adapter 2” Gas Inlet Adapter 3/4” NPT DHW Outlet Adapter 3/4” NPT DHW Inlet Adapter 3/4” NPT Condensate Adapter 1/2” NPT DHW Inlet Filter Table 9 - 150 Model Adapter Specifications How the Water Heater Operates The control can regulate the output of multiple water heaters through Condensing technology intelligently delivers water heating while...
  • Page 15 Figure 3 - 150 Model Components Number Component Description Number Component Description Number Component Description Exhaust Vent Adapter Mixing Valve Secondary Heat Exchanger Assembly Air Inlet Pipe DHW Outlet Adapter Gas Valve Ignition Transformer Condensate Trap Burner Case Igniter Gas Inlet Adapter AGM (Air Gas Mixer) Flame Detection Sensor Cold Water Inlet...

  • Page 16: Wall-Mounting

    Figure 4 - 199 Model Dimensions Description Diameter Exhaust Outlet Adapter 3” Air Intake Adapter 3” Gas Inlet Adapter 3/4” NPT DHW Outlet Adapter 3/4” NPT DHW Inlet Adapter 3/4” NPT Condensate Adapter 1/2” NPT DHW Inlet Filter Table 11 - 199 Model Adapter Specifications Field Wiring and Power Switch –...
  • Page 17 Figure 5 - 199 Model Components Number Component Description Number Component Description Number Component Description Exhaust Vent Adapter Water Adjustment Valve Freeze Protector Air Inlet Pipe Main Controller DHW Outlet Adapter Secondary Heat Exchanger AGM (Air Gas Mixer) Condensate Trap Assembly Ignition Transformer Gas Inlet Pipe 1...

  • Page 18: Part 4 - Water Piping

    Part 4 - Water Piping • Isolation (shutoff valves) should be used to ease future servicing. Westinghouse offers isolation valves (Part #7850P- 090). These optional parts may be purchased separately. Failure to follow the instructions in this section WILL VOID the •...

  • Page 19: Piping The Water Heater

    2. The expansion tank must be located as shown in Applications, this manual, or following recognized design methods. See expansion tank manufacturer’s instructions for details. D. Piping the Water Heater Use at least the MINIMUM pipe size for all water heater loop piping This is to avoid the possibility of inadequate flow through the water heater.
  • Page 20 Figure 8 - DHW Piping, Single Water Heater Figure 9 - DHW Piping, Single Water Heater with Recirculation Figure 10 - DHW Piping with Storage Tank Figure 11 - DHW Piping with Storage Tank and Recirculation NOTES: 1. Minimum pipe size should match connection size. Upsize pipe accordingly if greater flow is required. 2.
  • Page 21 Figure 12 - Cascaded Water Heaters Figure 13 - Cascade Water Heaters with Recirculation NOTES: 1. Minimum pipe size should match connection size. Upsize pipe accordingly if greater flow is required. 2. A thermal expansion tank suitable for potable water must be sized and installed within this piping system between the backflow preventer and the cold water inlet.
  • Page 22 Figure 14 - Cascaded Water Heaters with Storage Tank Figure 15 - Cascaded Water Heaters with Storage Tank and Recirculation NOTES: 1. Minimum pipe size should match connection size. Upsize pipe accordingly if greater flow is required. 2. A thermal expansion tank suitable for potable water must be sized and installed within this piping system between the backflow preventer and the cold water inlet.
  • Page 23 Figure 16 - Water Heater with Air Handler - NOTE: There is a Built-In Flow Check in the Air Handler Loop NOTES: 1. Minimum pipe size should match connection size. Upsize pipe accordingly if greater flow is required. 2. A thermal expansion tank suitable for potable water must be sized and installed within this piping system between the backflow preventer and the cold water inlet.

  • Page 24: Circulator Sizing

    F. Circulator Sizing Figure 17 - Pressure Drop through the Heat Exchanger ∆T = 77 ∆T = 45 ∆T = 35 Number of Water Water Water Flow Rate Pipe Dia. Flow Rate Pipe Dia. Flow Rate Pipe Dia. Units Velocity Velocity Velocity (GPM)

  • Page 25: Filling The Heater

    required. DO NOT operate this water heater before the supplied pressure relief valve is installed with sufficient relieving capacity in accordance with the rating plate on the water heater. RE-INSPECTION OF RELIEF VALVES: Valves should be inspected Pressure relief valves must be installed as close to the water heater AT LEAST ONCE EVERY THREE YEARS, and replaced if necessary, as possible.

  • Page 26: Approved Materials For Exhaust Vent And Intake Pipe

    1. Installation should be made in accordance with the regulations of the Authority Having Jurisdiction, local code authorities, and utility Due to the extreme flammability of most glues, cements, solvents, companies which pertain to this type of water heating equipment. and primers used to join plastic exhaust vent and intake pipes, 2.

  • Page 27: Additional Requirements For Installation In Canada

    DO NOT mix components from different venting systems. The vent system could fail, causing leakage of flue products into the living space. Use only the approved pipe and fitting materials, and primer and cement specifically designed for the material used, as listed in the above table.

  • Page 28: Exhaust Vent And Intake Pipe Location

    D. Exhaust Vent and Intake Pipe Location INSIDE CORNER DETAIL FIXED OPERABLE CLOSED FIXED CLOSED OPERABLE LP-179-CC 03/28/17 Exhaust Vent Terminal Intake Pipe Terminal Area Where Intake Terminal Is Not Permitted Figure 19 - Exit Terminals for Direct Vent Systems - ANSI Z223.1 / NFPA 54 for US and CAN/CSA B149.1 for Canada DESCRIPTION CANADA Clearance above grade, veranda, porch, deck, or balcony...

  • Page 29: Exhaust Vent And Intake Pipe Sizing

    collar. See Figure 20 for additional details. E. Exhaust Vent and Intake Pipe Sizing NOTE: Clean and dry the appliance connection. DO NOT use primer 1. The exhaust vent and intake pipe size is 2” for 150 models, and 3” for or cement on the appliance connection.

  • Page 30: Applications

    4 foot intervals to prevent sagging of the pipe where This table lists optional exhaust/intake terminations available from condensate may form. Westinghouse: 13. Do not use the heater to support any piping. Description Stock Code 14. A screened straight coupling is provided with the heater for use as 2”...
  • Page 31 Two Pipe Sidewall Venting Two Pipe Roof Venting EXTERIOR WALL with Elbow (Intake) with Elbow (Intake) and Coupling (Exhaust) and Coupling (Exhaust) 1" MIN. 12" MIN. EXHAUST INSERT EXHAUST SCREEN MAINTAIN 12" MINIMUM CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL OR GRADE, WHICHEVER IS GREATER (TYP) LP-505-A 06/23/15...
  • Page 32 EXHAUST AIR INTAKE FRONT VIEW EXHAUST AIR INTAKE LP-325-PP 03/31/11 SIDE VIEW Figure 24 - Horizontal (Snorkel) Venting NOTES: A. For every 1” of overhang, the exhaust vent must be located 1” vertical below overhang (overhang means top of building structure and not two adjacent walls [corner of building]).

  • Page 33: Venting Through An Existing System

    NOTE: The following instructions refer only to venting through an existing vent system, and not to venting with Westinghouse’s optional concentric vent kits. Refer to Concentric Vent Kit installation manual (LP-166) for further information on venting with the optional...

  • Page 34: Power Venting, Indoor Combustion Air In Confined Or Unconfined Space

    3. Power Venting, Indoor Combustion Air in Confined or Unconfined Space This heater requires fresh, uncontaminated air for safe operation considered part of the space. Confined space is space with volume less than 50 cubic feet per and must be installed in a mechanical room where there is adequate combustion and ventilating air.

  • Page 35: Common Vent Piping - 199 Model Only

    I. Common Vent Piping - 199 Model Only! DO NOT ATTEMPT to common vent 150 model water heaters! Doing so will result in property damage, severe personal injury, or death. Common Vented units must be direct vented, with an exhaust vent and intake air pipe vented to the outdoors.

  • Page 36: Recommended Exhaust Pipe Transitions

    2. Recommended Exhaust Pipe Transitions Figure 29 - Recommended Exhaust Pipe Transitions 3. Two (2) Pipe Common Direct Vent Systems the vent system. Possible configurations are not limited to the following diagrams. See Table 20 for trunk line sizing when common DO NOT ATTEMPT to common vent 150 model water heaters! venting multiple heaters.
  • Page 37 Figure 30 - Common Vented Units – Unbalanced Venting Figure 31 - Common Vented Units – Roof Venting NOTE: This drawing is meant only to demonstrate system venting. The installer is responsible for all equipment and detailing required by local codes. For sidewall applications, terminate the outlet on the All vent pipes must be glued, properly supported, and the exhaust exterior wall at least 12”...

  • Page 38: Part 6 - Installing The Condensate Drain

    (p/n 7450P-212 available 2. Condensate line must be pitched at least ¼” per foot to properly from Westinghouse). Follow all the installation instructions included drain. If this cannot be done, or a very long length of condensate hose is used, increase the condensate line to a minimum of 1”...

  • Page 39: Part 7 - Connecting Electrical Service

    Part 7 - Connecting Electrical Service 3. The wiring diagrams in this manual are to be used for reference purposes only. 4. Refer to these diagrams and the wiring diagrams of any external Install wiring and electrically ground water heater in accordance controls used with the installation when wiring the water heater.

  • Page 40: Wiring A Cascaded System

    C. Wiring a Cascaded System When wiring the water heater for Cascade operation, select one as the Master water heater. The remaining water heaters will be designated Followers. See “Setting Up a Cascade System” for more When installing a cascaded system, it is important that the water details.
  • Page 41 Figure 39 - 150 Model Electrical Wiring Diagram whl-004 Rev. 000 Rel. 013 Date 5.1.18...
  • Page 42 Figure 40 - 150 Model Ladder Diagram whl-004 Rev. 000 Rel. 013 Date 5.1.18...
  • Page 43 Figure 41 - 199 Model Electrical Wiring Diagram whl-004 Rev. 000 Rel. 013 Date 5.1.18...
  • Page 44 Figure 42 - 199 Model Ladder Diagram whl-004 Rev. 000 Rel. 013 Date 5.1.18...
  • Page 45 Connector Description HT Selv No. of Location Board Silk UNUSED Power Supply Line UNUSED Ignitor Power Supply L/HT Ceramic Heater (Freeze Protection) 65001WS-12 HT (120V~) Gas Valve Power Supply GROUND Power Supply (Neutral) 9-12 AC Power COM Line RS-485 + RS-485 SELV (5V) SMW250-03...
  • Page 46 Connector Description HT SELV No. of Location Board Silk Flame Sensor OP.S Outlet Operating Water Temperature Sensor DH.S DHW Temperature Sensor Inlet Water Temperature Sensor SELV (5V) LWD1140-14 BG.S Exhaust Temperature Sensor ST.S UNUSED SP.S UNUSED AGM Stepper Motor Coil / Y Phase SELV (24V) AGM Stepper Motor Coil / X Phase CN12...

  • Page 47: Part 8 - Gas Connections

    Part 8 - Gas Connections FIRE AND/OR EXPLOSION HAZARD To avoid serious injury or death, the gas line installation and the gas line inlet pressure test must be done by a licensed professional. Ensure the gas on which the water heater will operate is the same type specified on the rating plate (natural gas or LP gas). This water heater must be converted into propane operation unless specifically manufactured for use with propane.

  • Page 48: Additional Precaution For Excess Flow Valve (Efv)

    combustion values. Repeat this procedure until the values obtained C. Additional Precaution for Excess Flow Valve (EFV) on the calibrated combustion analyzer agree with those stated in Table If an excess flow valve (EFV) is in the gas line, check the manufacturer’s minimum and maximum flow capacity ratings.

  • Page 49: Part 9 - Controls

    Part 9 - Controls A. Control and Display Overviews Figure 47 - Control Panel Detail Figure 48 - LCD Display After start-up, the display appears as follows. LCD also features a backlit lamp that will illuminate: • When a user action is detected (a button is pressed) •...

  • Page 50: Changing The Dhw Set-Point

    C. Changing the DHW Set-Point D. Changing the Temperature Indicator NOTE: The setpoint cannot be changed if water is flowing through the To change the temperature indicator from Fahrenheit to Celsius, unit. Ensure there is no demand on the water heater when changing press and hold the button for more than five (5) seconds when the setpoint.

  • Page 51: Status Display

    E. Status Display Status Display will activate when button is pressed and held for five seconds at Standby Mode. Figure 51 - Status Display Screens Display Display Detail Description (Main Menu) (Sub Menu) A:GA or A:LI Flow Unit Current Flow Unit (LI: Liters/min, GA: Gallons/min) b:Fr Fan Speed (RPM) Current Fan Speed (RPM)

  • Page 52: Installer Mode

    F. Installer Mode Installer Mode will activate when button is pressed and held for five seconds while the water heater display is powered Off. Figure 52 - Installer Mode Screens Display Default Detail Description 1:EH E0.00 Error history up to 10 Check ten most recent Error Codes (H0 - H9) 2:cE Clear Error History...

  • Page 53: Setting Up A Cascaded System

    • The Master appliance rotates after a cumulative combustion of G. Setting Up a Cascaded System 10 hours Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 A maximum of eighteen (18) 199 models may be installed in a Sequence Before CA 01 CA 02...

  • Page 54: Part 10 - Troubleshooting

    Part 10 - Troubleshooting A. Error Code When the water heater encounters an error, the display will flash “Er” followed by a numerical code. The water heater shall enter a soft lockout condition if the error is such that it can return to normal operation once the condition relieves itself (overheat conditions, NTC open or shorts, etc.).
  • Page 55 Error Code Error Code Description Possible Remedies This Error Code will go away when outlet water temperature decreases. If Error happens again: Water Outlet Sensor Open or Er:32 1. Check DHW outlet temperature sensor. Ensure connections are secure. Short 2. Check sensor resistance. If resistance is zero, replace the sensor. 3.
  • Page 56 Error Code Error Code Description Possible Remedies Press the Power button to clear the Error Code. If Error happens again: 1. Turn power OFF and ON at the main power switch internal to the water heater. 2. Ensure fan inlet hole is completely open after turning the power OFF and ON. Er:67 AGM Error 3.

  • Page 57: Error Tree Analysis

    B. Error Tree Analysis 1. Flame Detection Figure 54 - Flame Detection Error Analysis Tree 2. Air Pressure Switch Detection Figure 55 - Air Pressure Switch Analysis Tree whl-004 Rev. 000 Rel. 013 Date 5.1.18...

  • Page 58: Inlet / Dhw / Operating Temperature / Exhaust Sensors

    3. Inlet / DHW / Operating Temperature / Exhaust Sensors Figure 56 - Inlet / DHW / Operating Temperature Sensors Error Analysis Tree C. Suggested Corrective Actions Problem Possible Causes Possible Remedies 1. Is the plug on the power supply cord unplugged 1.
  • Page 59 DIAGNOSTICS AND SUGGESTED CORRECTIVE ACTIONS The water heater control is able to record information about the water heater’s condition at the time of the ten previous faults or errors. This information is available to view in the Installer Mode under the History screen. The following screens may be displayed when reviewing the water heater history.

  • Page 60: Part 11 - Installation Checklist

    DHW Inlet Temperature Sensor DHW Outlet Temperature Sensor (7850P-015) (7850P-019) Exhaust Temperature Sensor HX (OP) Temperature Sensor (7850P-070) (7850P-081) Temperature ( Resistance (Ω) Temperature ( Resistance (Ω) 62162 28409 48440 22152 38045 17408 30107 13782 23998 10990 19261 8824 15562 7131 12655 5800...
  • Page 61 Install Exhaust Vent and Intake Piping Have venting lengths been minimized? Are terminations properly spaced from windows, doors, and other intake vents? Have all vent terminations been installed at least one foot above exterior grade and one foot above normal snow accumulation level? Is vent piping properly supported? Has vent piping been checked for leaks?

  • Page 62: Part 12 - Maintenance

    Part 12 - Maintenance The water heater must be inspected and serviced annually, Failure to inspect the venting system and have it repaired by a preferably at the start of the heating season, by a qualified installer qualified installer / service technician can result in vent system / service technician.
  • Page 63 7. Dry the filter completely. Then reinsert the filter into the plastic assembly. 8. Replace the front cover of the water heater cabinet. Reconnect power supply to the water heater. 9. Press the Power button on the control panel to turn on the water heater.
  • Page 64 Maintenance Report In unusually dirty or dusty conditions, care must be taken to keep water heater cabinet door in place at all times. Failure to do so VOIDS WARRANTY! Allowing the water heater to operate with a dirty combustion chamber will hurt operation. Failure to clean the heat exchanger as needed by the installation location could result in water heater failure, property damage, personal injury, or death.
  • Page 65 INSPECTION ACTIVITIES DATE LAST COMPLETED 1 st YEAR 2 nd YEAR 4 th YEAR* 3 rd YEAR PIPING Near water heater Check water heater and system piping for any sign of leakage. piping Leaking pipes could cause property damage. Make sure all piping is properly supported.

  • Page 66: Part 13 - Replacement Parts

    Part 13 - Replacement Parts Figure 61 - 150 Model Cabinet Replacement Parts NUMBER DESCRIPTION PART NUMBER NUMBER DESCRIPTION PART NUMBER Exhaust Assembly 7850P-117 Water Leak Detector 7850P-215 Exhaust and Intake Packing 7850P-118 Power Cord 7850P-123 Air Intake Assembly 7850P-119 Air Pressure Switch 7850P-047 Water Inlet Valve Assembly...
  • Page 67 Figure 62 - 150 Model Heat Exchanger Replacement Parts NUMBER DESCRIPTION PART NUMBER NUMBER DESCRIPTION PART NUMBER Burner Fixing Bracket 7850P-133 Flame Detector Sensor Bracket 7850P-030 Blower Connector Packing 7850P-225 Flame Detector Sensor 7850P-031 Burner Assembly 7850P-134 Exhaust Pipe Assembly (Upper) 7850P-139 Ignition Rod 7850P-008...
  • Page 68 Figure 63 - 150 Model Combustion System Replacement Parts NUMBER DESCRIPTION PART NUMBER NUMBER DESCRIPTION PART NUMBER Fan and AGM Assembly NG 7850P-150 Gas Valve Plug Bracket 7850P-157 Fan and AGM Assembly LP 7850P-151 Gas Valve Adapter -90 7850P-079 7850P-002 1/2”...
  • Page 69 Figure 64 - 199 Model Cabinet Replacement Parts NUMBER DESCRIPTION PART NUMBER NUMBER DESCRIPTION PART NUMBER Exhaust Assembly 7850P-021 Air Pressure Switch 7850P-047 Case 7850P-044 Display Bracket 7850P-065 Door Assembly 7850P-025 Display 7850P-057 Front Cover 7850P-062 PCB (Control Board) 7850P-058 Display Panel Bracket 7850P-024 Control Board Bracket...
  • Page 70 Figure 65 - 199 Model Heat Exchanger Replacement Parts NUMBER DESCRIPTION PART NUMBER NUMBER DESCRIPTION PART NUMBER Heat Exchanger Assembly 7850P-032 Flame Detector Sensor 7850P-031 31-1 Exhaust Pipe Assembly (Upper) 7850P-033 Mixing Valve 7850P-054 31-2 Exhaust Temperature Sensor 7850P-070 HX Temperature Sensor 7850P-081 31-3 Exhaust Gasket 1...

  • Page 71: Limited Warranty For Tankless Water Heaters

    A. During the first year after the original date of installation, WARRANTY EXCLUSIONS Westinghouse warrants that it will repair or replace, at its option, any This limited warranty will not cover: defective or malfunctioning component of the water heater with 1.
  • Page 72 Contaminant Level Westinghouse for warranty analysis will become the property of Total Hardness Westinghouse and will not be returned, even if credit is denied. 200 mg/l (Residential Use - Below 140 F water If all warranty conditions are satisfied, Westinghouse will provide...

  • Page 73: Notes

    Notes whl-004 Rev. 000 Rel. 013 Date 5.1.18...

  • Page 74: Customer Installation Record Form

    Customer Installation Record Form The following form should be completed by the installer for you to keep as a record of the installation in case of a warranty claim. After reading the important notes at the bottom of the page, please also sign this document. Customer’s Name Date of Installation Installation Address...

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