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NOTICE: Westionghouse reserves the right to make product changes or updates without notice and will not be held liable for
typographical errors in literature.
NOTE TO CONSUMER: PLEASE KEEP ALL INSTRUCTIONS FOR FUTURE REFERENCE.
The surfaces of these products contacted by consumable water contain less than 0.25% lead by weight, as required by the Safe
Drinking Water Act, Section 1417.
IF THE INFORMATION IN THIS MANUAL IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT, CAUSING
PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE. DO NOT STORE GASOLINE OR OTHER FLAMMABLE VAPORS
AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER WATER HEATER.
Do not try to light any water heater.
Do not touch any electrical switch.
Do not use any phone in your building.
Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions.
If you cannot reach your gas supplier, call the fire department. Installation and service must be provided by a qualified installer,
service agency, or the gas supplier.
WHAT TO DO IF YOU SMELL GAS
Residential
Tankless
Water Heater
INSTALLATION
MAINTENANCE
WHL-004 REV. 12.17.14
START-UP
PARTS
Models*
WGRTNG199
WGRTLP199
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Table of Contents
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Summary of Contents for Westinghouse WGRTNG199
- Page 1 START-UP MAINTENANCE PARTS Models* WGRTNG199 WGRTLP199 NOTICE: Westionghouse reserves the right to make product changes or updates without notice and will not be held liable for typographical errors in literature. NOTE TO CONSUMER: PLEASE KEEP ALL INSTRUCTIONS FOR FUTURE REFERENCE.
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Page 2: Safety Instructions
The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels, or to important product information. DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. -
Page 3: For The Installer
In some circumstances, the property owner or his/her agent assumes the role, and at government installations, the commanding officer or departmental official may be the AHJ. NOTE: Westinghouse reserves the right to modify product technical specifications and components without prior notice. FOR THE INSTALLER This manual must only be used by a qualified heating installer/service technician. -
Page 4: Table Of Contents
INSTALLATIONS MUST COMPLY WITH: Local, state, provincial, and national codes, laws, regulations and ordinances. The latest version of the National Fuel Gas Code, ANSI Z223.1, from American Gas Association Laboratories, 8501 East Pleasant Valley Road, Cleveland, OH 44131. In Canada – CGA No. B149 (latest version), from Canadian Gas Association Laboratories, 55 Scarsdale Road, Don Mills, Ontario, Canada M3B 2R3. - Page 5 3. Screen Installation ..................................20 PART 6 – INSTALL THE CONDENSATE DRAIN ........................21 PART 7 – GAS PIPING ................................21 A. GAS PIPE SIZING TABLES ..............................21 1. Gas Pipe Sizing ..................................21 2. Natural Gas Pipe Sizing ................................21 3.
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Page 6: Part 1 - Items Shipped With The Water Heater
PART 1 – ITEMS SHIPPED WITH THE WATER HEATER ITEM DESCRIPTION QUANTITY Residential Tankless Water Heater WGRTNG199 WGRTLP199 Quick Reference Guide, User, 1 Each and Installation Manuals Condensate Hose Anchors and Wall Mounting Bracket Spare Parts Kit (Gaskets and O-Rings) Vent Screens (3”) - Page 7 Certain local codes require additional temperature limits. In addition, certain types of systems may operate at temperatures below the minimum set point of the limit provided with the water heater. Contact Westinghouse for additional overheat controls.
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Page 8: Improper Combustion
Table 2 – Water Quality Specifications G. FREEZE PROTECTION Consider water heater piping and installation when determining water heater location. NOTE: Damages resulting from incorrect installation or from use of products not approved by Westinghouse ARE NOT covered by warranty. WHL-004 REV. 12.17.14... -
Page 9: Part 3 - Technical Specifications
PART 3 – TECHNICAL SPECIFICATIONS MODEL WGRTNG199 / WGRTLP199 Installation Indoor, Wall Hung, Fully Condensing Minimum / Maximum Input (Btu/Hr) 19,900 / 199,000 F Rise 11 Gal Hot Water Capacity F Rise 8.5 Gal F Rise 5 Gal Flue System Sealed Combustion Direct Vent 2”... - Page 10 Figure 1 – Specifications and Dimensions DESCRIPTION DIAMETER 3” Exhaust Outlet Pipe Air Intake 3” ¾” Gas Inlet ¾” DHW Outlet Adapter ¾” DHW Inlet Adapter ½” Condensate Adapter DHW Inlet Filter Table 4 – Adapter Specifications WHL-004 REV. 12.17.14...
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Page 11: Part 4 - Prepare Water Heater Location
Figure 2 – Components NUMBER COMPONENT DESCRIPTION NUMBER COMPONENT DESCRIPTION Exhaust Vent Adapter Exhaust Duct Air Inlet Pipe Gas Valve AGM (Air Gas Mixer) Gas Inlet Pipe 2 Ignition Transformer BLDC Fan Igniter Air Intake Pipe Adapter Flame Detection Sensor Gas Inlet Adapter Primary Heat Exchanger Assembly Freeze Protector... -
Page 12: Before Locating The Water Heater
The water heater should be located near a floor drain, or installed in proximity to an adequately drained drain pan. Westinghouse WILL NOT be held liable for leakage damages. To conserve water and energy, insulate all water piping, especially the hot and recirculation water lines. -
Page 13: Leveling
Do not use this water heater for space heating applications. Circulators suitable for DHW applications must be used. 6. Clean and flush system when reinstalling a water heater. NOTE: When installing in a zero clearance location, it may not be possible to read or view some product labeling. It is recommended to make note of the water heater model and serial number. -
Page 14: Prevent Combustion Air Contamination
Exhaust vent and intake pipe may be vented vertically through the roof or out a side wall. Venting methods are detailed in the Venting Section. Do not attempt installation using any other means. Be sure to locate the water heater so exhaust vent and intake piping can be routed through the building and properly terminated. -
Page 15: Uncrating The Water Heater
5. Test for spillage at the draft hood relief opening after 5 minutes of main burner operation. Use the flame of a match or candle or smoke from a cigarette. 6. After it has been determined that each appliance remaining connected to common venting system properly vents when tested as outlined, return doors, windows, exhaust fans, fireplace dampers and any other gas burning appliance to their previous condition of use. -
Page 16: Part 5 - Venting
PART 5 – VENTING Vent this water heater in accordance with these instructions. Failure to do so will result in property damage, severe personal injury, or death. DO NOT mix vent systems or materials unless specifically told to do so in this manual. DO NOT thermally insulate the exhaust vent or intake pipes. - Page 17 Ensure the vent is located where it will not be exposed to prevailing winds. In all roof venting applications, exhaust discharge must point away from the pitch of the roof. To prevent water leakage, install adequate roof flashing where the pipe enters the roof. ...
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Page 18: Approved Vent Materials
When installing AL29-4C vent piping, install a PVC-to-stainless adapter at the water heater vent connection, and at the termination when using an Westinghouse PVC termination kit. DO NOT mix AL-29-4C piping from different manufacturers unless using adapters specifically designed for the purpose by the manufacturer. -
Page 19: Tightening Water Heater Collar To Exhaust Vent And Intake Pipe
D. TIGHTENING WATER HEATER COLLAR TO EXHAUST VENT AND INTAKE PIPE This appliance uses 2” or 3” diameter pipe for exhaust vent and intake pipe. In order to use 2” pipe, it is required to reduce pipe size in a vertical length of pipe with a reducing coupling (not included). Follow the steps below to install 3” pipe into the appliance collar. See Figure 6 for additional details. -
Page 20: Direct Vent, Optional Horizontal And Vertical Vent Kits
2. Direct Vent, Optional Horizontal and Vertical Vent Kits Figure 9 – Direct Vent, Vent Terminations (With Optional Kits) All vent pipes must be glued, properly supported, and the exhaust must be pitched a minimum of ¼” per foot back to the appliance to allow drainage of condensate. -
Page 21: Part 6 - Install The Condensate Drain
SAFETY INSTRUCTIONS Do not connect any other appliance vents to the water heater exhaust vent or intake pipes. PART 6 – INSTALL THE CONDENSATE DRAIN 1. Due to its efficient design, the water heater produces condensate (water) as a normal by-product. This condensate is acidic, with a pH level between 3 and 4. This condensate must be drained away from the water heater and disposed in accordance with all local regulations. -
Page 22: Lp (Liquid Propane) Gas Pipe Sizing
Maximum Natural Gas Delivery Capacity – Length of Corrugated Stainless Steel Pipe in Feet Cubic Feet per Hour (0.60 Specific Gravity, 0.5 WC Pressure Drop) Pipe Size ½” ¾” 1” 1 ¼” 1 ½” 1260 2” 2930 2080 1700 1470 1320 1200 1040... - Page 23 5. To facilitate any future maintenance, it is also recommended that an approved gas union fitting be installed in the supply line between the shut-off valve and the ¾” female NPT connection on the water heater. Figure 12 – Gas Line With Shut-Off Valve Detail 6.
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Page 24: Adjusting Gas Pressure At The Water Heater
C. ADJUSTING GAS PRESSURE AT THE WATER HEATER NOTE: Refer Figure 15 when adjusting gas pressure. Loosen the bolts before checking the gas inlet pressure. 1. The water heater and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of the system at test pressures greater than ½... -
Page 25: Piping Diagram
D. PIPING DIAGRAM Figure 16 – DHW Piping Figure 17 – Piping with Recirculation E. PRESSURE RELIEF VALVE An external pressure relief valve must be installed on this water heater. When installing, observe the following guidelines. Failure to comply with these guidelines can result in substantial property damage, personal injury, or death. -
Page 26: Part 9 - Connect Electrical Power / Initial Startup
maximum BTU/H rating on the pressure relief valve is equal to or greater than the maximum input BTU/H rating of the combination water heater. To avoid water damage or scalding due to relief valve operation: Discharge line must be connected to relief valve outlet and run to a safe place of disposal. Terminate the discharge line in a manner that will prevent possibility of severe burns or property damage should the relief valve discharge. -
Page 27: Dip Switches
3. The wiring diagrams contained in this manual are to be used for reference purposes only. 4. Refer to these diagrams and the wiring diagrams of any external controls used with the installation when wiring the water heater. Read, understand, and follow all wiring instructions supplied with the controls. 5. - Page 28 Figure 21 – Electrical Wiring Diagram WHL-004 REV. 12.17.14...
- Page 29 Figure 22 – Ladder Diagram WHL-004 REV. 12.17.14...
- Page 30 CONNECTOR DESCRIPTION HT SELV NO. OF LOCATION BOARD SILK UNUSED Power Supply Line UNUSED Ignitor L(HT) Ceramic Heater (Freeze Protection) 65001WS-12 HT (120V~) Gas Valve EARTH GROUND Power Supply Neutral 9-12 AC Power COM Line RS485 + RS-485 SELV (5V) SMW250-03 RS485 - Unused...
- Page 31 CONNECTOR DESCRIPTION HT SELV NO. OF LOCATION BOARD SILK Flame Detect Sensor OP.S 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) CN12 AGM Stepper Motor Coil / X Phase...
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Page 32: Part 10 - Operating System Instructions
PART 10 – OPERATING SYSTEM INSTRUCTIONS A. CONTROL PANEL Figure 23 – Water heater Control Panel Detail B. LCD DISPLAY DESCRIPTIONS Figure 24 – LCD Display Detail LCD also features a backlit lamp that will illuminate: When a user action is detected (a button is pressed) ... -
Page 33: Changing The Dhw Set-Point
The Control System can operate through user and service modes that have specific LCD outputs and dedicated controls, including: Changing the Set-Point Temperature Error Mode Status Display Mode Installer Mode NOTE: The Control System will not allow changes if Lock Mode is activated unless the B button is pressed for more than 5 seconds. D. -
Page 34: Installer Mode
Figure 27 – Status Mode Screens Parameter Detail Description A: Li or A: GA Flow 1 Current Flow Value (Li: Liters/min, GA: Gallons/min) b: Fr Fan rpm Current Fan RPM Value Lock Mode is In Use (ON) or Unused (OFF) C: Lc Lock Mode Allows user to lock out any temperature change. -
Page 35: Error Mode
Figure 28 – Installer Mode Screens Index Default Parameter Description Most Recent History Error Codes (H0 – H9) 1: EH E0:00 History 2: cE Clear Error History Clears Error History Restores System to Default Settings (Burner operation time, Ignition cycles, and Supply 3: In System Reset power time will not be reset) - Page 36 Error Code Error Code Description Possible Remedies Press the Power button to clear the Error Code. If Error happens again: 1. Monitor the gas pressure to the water heater while in operation. Ensure pressure is between 3.5 and 14” WC. Flame has Extinguished 8 2.
- Page 37 Error Code Error Code Description Possible Remedies IMPORTANT: If you smell gas, STOP! Follow the instructions on page 2, this manual, and call a qualified service technician or the fuel gas utility. Gas Leakage is Detected Press the Power button to clear the Error Code. in 10 Minutes, or three If Error happens again: Er:40...
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Page 38: Error Tree Analysis
Error Code Error Code Description Possible Remedies This Error Code will go away when the condition is remedied. If Error happens again: 1. Check if dip switch High Fire setting is ON. Switches 6 and 7 should be OFF for normal operation. Exhaust NTC detects Vent 2. -
Page 39: Gas Detection
2. GAS DETECTION Figure 31 – Gas Detection Error Analysis Tree 3. AIR PRESSURE SWITCH Figure 32 – Air Pressure Switch Analysis Tree 4. Inlet / DHW / Operating Temperature SENSORS Figure 33 – Inlet / DHW / Operating Temperature Sensors Error Analysis Tree WHL-004 REV. -
Page 40: Part 11 - Final Installation Checklist
PART 11 – FINAL INSTALLATION CHECKLIST Is there enough space to ensure proper installation? Does installation location allow for proper service clearances? BEFORE Are water and gas lines properly sized and set at proper pressures for the installation? INSTALLING Is water heater location as near the exhaust vent / intake pipe terminations as possible? Have combustible materials been cleared from the installation location? Is there a drain close to the water heater? Does water heater loop piping meet the minimum sizing requirements listed? -
Page 41: Part 12 - Troubleshooting
Figure 34 – Flame Sight Glass PART 12 – TROUBLESHOOTING TROUBLESHOOTING CHART PROBLEM POSSIBLE CAUSES POSSIBLE REMEDIES 1. Is the plug on the power supply cord unplugged 1. Reset the plug. from the electrical outlet? 2. Reset the circuit breaker. No electrical power 2. -
Page 42: Part 13 - Maintenance Procedures
PROBLEM POSSIBLE CAUSES POSSIBLE REMEDIES White “smoke” can be seen coming out Depending on the outside temperature, water vapor This is normal operation – no action is required. of the exterior can be produced as the exhaust is vented. exhaust gas vent. Table 24 –... - Page 43 Combustible/Flammable Materials Do not store combustible materials, gasoline, or other flammable vapors or liquids near the water heater. If found, remove these materials immediately. Air Contaminates If allowed to contaminate combustion air, products containing chlorine or fluorine will produce acidic condensate that will cause significant damage to the water heater.
- Page 44 Figure 35 – Cleaning the Air Intake Filter 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. Check Primary and Gas Piping ...
- Page 45 If relief valve seats properly, restore power to the water heater. Observe operation for five minutes and ensure it operates properly. Check the Burner Clean the exterior of the burner. Cleaning the Cold Water Inlet Filter (Draining the Water Heater) 1.
- Page 46 5. Open service valves (V3 and V4) on the hot water outlet and cold water inlet lines. 6. Turn on the circulation pump. Operate the pump and allow the cleaning solution to circulate through the water heater for at least 1 hour at a rate of 4 gallons per minute.
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Page 47: Replacement Parts
REPLACEMENT PARTS Figure 38 – Cabinet Replacement Parts NUMBER DESCRIPTION PART NUMBER NUMBER DESCRIPTION PART NUMBER EXHAUST ASSY 7850P-021 AIR PRESSURE SWITCH 7850P-047 CASE 7850P-044 DISPLAY BRACKET 7850P-065 DOOR ASSY 7850P-025 DISPLAY 7850P-057 FRONT COVER 7850P-062 CONTROL 7850P-058 DISPLAY PANEL BRACKET 7850P-024 CONTROL BRACKET 7850P-066... - Page 48 Figure 39 – Heat Exchanger Replacement Parts NUMBER DESCRIPTION PART NUMBER NUMBER DESCRIPTION PART NUMBER HEAT EXCHANGER ASSY 7850P-032 35-6 METAL FIBER 7850P-075 31-1 EXHAUST PIPE ASSY (UP) 7850P-033 FLAME DETECTOR SENSOR 7850P-031 31-2 EXHAUST TEMPERATURE SENSOR 7850P-070 MIXING VALVE 7850P-054 7850P-071 WATER TEMPERATURE...
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Page 49: Limited Warranty For Residential Tankless Water Heaters
B. If Westinghouse is unable to repair or replace the water heater or part(s) so as to conform to this warranty after a reasonable number of attempts, Westinghouse will then provide, at its option, a replacement water heater. - Page 50 NO OTHER WARRANTIES This Westinghouse Warranty gives you specific legal rights, and you may also have other rights that vary from state to state. Some states do not allow the exclusion or limitation of incidental or consequential damages so this limitation or exclusion may not apply to you.
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Page 51: Maintenance Report
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 52 FINAL INSPECTION Check list Verify that you have completed entire check list. WARNING: FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY OR DEATH. Homeowner Review what you have done with the homeowner. TECH SIGN OFF Table 28 - *Continue annual maintenance beyond the 4 year as required.
- Page 53 WHL-004 REV. 12.17.14...
- Page 54 WHL-004 REV. 12.17.14...
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Page 55: Maintenance Notes
MAINTENANCE NOTES WHL-004 REV. 12.17.14... -
Page 56: Customer Installation Record Form
Customer: Please only sign after the installer has reviewed the installation, safety, proper operation and maintenance of the system. In the case that the system has any problems, please call the installer. If you are unable to make contact, please contact your Westinghouse Sales Representative. Distributor/Dealer: Please insert contact details.