Gas Fired Residential Combi Boiler Wall Mount Models INSTALLATION / START-UP MAINTENANCE / PARTS WARRANTY Models WBRCNG140W WBRCLP140W Heat Exchanger Bears the ASME “H” Stamp NOTICE: Westinghouse 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.
WHL-012 REV. 12.17.
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.
FOREWORD This manual is intended to be used in conjunction with other literature provided with the appliance. This includes all related control information. It is important that this manual, all other documents included with this system, and additional publications including the National Fuel Gas Code, ANSI Z223.1-2002, be reviewed in their entirety before beginning any work.
E. WATER QUALITY .................................................................................................................................................................... 10 F. FREEZE PROTECTION ........................................................................................................................................................... 10 PART 3 – TECHNICAL SPECIFICATIONS ...............................................................................................................
B. LCD DISPLAY DESCRIPTIONS .............................................................................................................................................. 42 C. START-UP SEQUENCE .......................................................................................................................................................... 42 D. CHANGING THE DHW SET-POINT ...............................................................................................................................
PART 1 – ITEMS SHIPPED WITH THE APPLIANCE ITEM DESCRIPTION QUANTITY Wall Hung Combi Boiler 1 Installation and User’s Information Manuals, H2 Document 1 Each Condensate Hose 1 CH Pressure Relief Valve With ¾” X 1” Bushing (CH Line ¾” 30 psi) 1 Each.
ITEM OPTIONAL PARTS (Not Included) DESCRIPTION QUANTITY PART NUMBER Threaded 1” CH Tankless Isolation Valves (Without Pressure Relief Valve) 2 7850P-089 Threaded ¾” DHW Tankless Isolation Valves (With Pressure Relief Valve) 2 7850P-090 Vent Screens (2” Mesh) 2 Screens 7850P-088 Table 1 – Items Included with the Appliance PART 2 – SAFETY REGULATIONS A. OPERATION AND INSTALLATION WARNINGS To avoid serious injury or death, read, understand, and follow all the precautions listed here.
DO NOT use spray paint, hair spray, or any other flammable spray near the appliance or near the exterior fresh air intake port. DO NOT place any items in or around the exterior exhaust gas outlet port and/or fresh air inlet port that could restrict or block the flow in or out of the vent system. DO NOT store or place newspapers, laundry, or other combustible items near the appliance or the exterior exhaust gas outlet and/or fresh air inlet port.
C. GAS Should overheating or gas supply fail to shut off, do not turn off or disconnect electrical supply to the circulator. Instead, shut off the gas supply at a location external to the appliance. D. WHEN SERVICING THE APPLIANCE To avoid electric shock, disconnect electrical supply before performing maintenance. To avoid severe burns, allow appliance to cool. Do not use petroleum-based cleaning or sealing compounds in a appliance system.
PART 3 – TECHNICAL SPECIFICATIONS MODEL Installation Minimum / Maximum Input (Btu/Hr) AFUE o 35 F Rise o Hot Water Capacity 45 F Rise o 77 F Rise Flue System Combined Vent Length Shipping Weight (lbs est.
Figure 1 –Specifications and Dimensions DESCRIPTION A Automatic Air Vent B Intake Pipe Connection C Exhaust Vent Connection D CH Supply Adapter E CH Return Adapter F DHW Outlet Adapter G DHW Inlet Adapter H Gas Connection Adapter I Condensate Adapter Table 4 – Adapter Specifications DIAMETER (ALL NPTM) 3” 3” 1” NPT 1” NPT ¾” NPT ¾” NPT ½” NPT (1/2” X ¾” Bell Coupling Provided to Upsize Gas Line) - WHL-012 REV. 12.17.
Figure 2 – Components NUMBER COMPONENT DESCRIPTION 1 Air Vent 2 Air Intake Adapter 3 Air / Gas Mixing Pipe 4 Gas Valve 5 Internal Storage Tank 6 Main PCB 7 Manual ON/OFF Power Switch 8 Internal Recirculation Pump (DHW) / CH Internal Primary Pump 9 CH Supply Adapter 10 CH Return Adapter 11 CH Pressure Gauge 12 DHW Outlet Adapter 13 Gas Inlet Adapter 14 DHW Inlet Adapter With Filter and Flow Restrictor Table 5 – Component List NUMBER 15 16 17 18 19 20 21 22 23 24 25 26 27 28 COMPONENT DESCRIPTION Conden
o Cold weather handling – If appliance has been stored in a very cold location (below 0 F) before installation, handle with care until the plastic components come to room temperature. Remove all sides of the shipping crate to allow the appliance to be lifted into its installation location. Carefully consider installation when determining appliance location. Please read the entire manual before attempting installation.
4. Gas control system components must be protected from dripping water during operation and service. 5. If the appliance is to replace an existing appliance, check for and correct any existing system problems, such as: System leaks Location that could cause the system and appliance to freeze and leak. Incorrectly-sized expansion tank Do not connect the appliance to any heating systems or components that have been previously used for non-potable applications.
Always take future maintenance into consideration when locating the appliance. If the appliance is located in an installation location with limited clearances, it may be necessary to remove the appliance from the space to perform maintenance. Failure to consider maintenance when determining installation location could result in property damage. E.
PRODUCTS TO AVOID Spray cans containing fluorocarbons Permanent wave solutions Chlorinated waxes/cleaners Chlorine-based swimming pool chemicals Calcium chloride used for thawing Sodium chloride used for water softening Refrigerant leaks Paint or varnish removers Hydrochloric or Muriatic acid Cements and glues Antistatic fabric softeners used in clothes dryers Chlorine-type bleaches, laundry detergents, and cleaning solvents Adhesives used to fasten building products Table 7 AREAS LIKELY TO HAVE CONTAM
I. WALL-MOUNTING THE APPLIANCE The appliance must be installed on a wall that can bear its weight (more than 110 lbs. when fully plumbed and full of water). Installing the appliance on a wall which cannot support its weight could result in property damage, personal injury, or death. The appliance may be installed on any suitable internal wall (suitable sound-proofing may be required when installing onto a stud partition wall). This appliance is too heavy for one person to lift.
4. Reinstall the DHW inlet filter. 5. Reinstall the two pins. Figure 6 – A – Removing the DHW Inlet Filter, B – Removing the Flow Restrictor Figure 7 – Water Pressure vs. Flow Through the Restrictors WHL-012 REV. 12.17.
PART 5 – VENTING Vent this appliance 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. DO NOT use an electric damper, vent damper, or draft hood with this appliance. DO NOT locate the exhaust vent or intake pipe terminations where exposed to prevailing winds.
Figure 8 – Vent Termination Detail A B C D E F G H I J K DESCRIPTION Clearance above grade, veranda, porch, deck, or balcony Clearance to window or door that may be opened Clearance to permanently closed window Vertical clearance to ventilated soffit located above the terminal within a horizontal distance of 2 feet from the center line of the terminal Clearance to unventilated soffit Clearance to outside corner Clearance to inside corner Clearance to each side of center line extended above meter / reg
Item Exhaust vent or Intake pipe and fittings Pipe cement/primer APPROVED EXHAUST VENT AND INTAKE PIPE MATERIAL Standards for Installation in: Material United States Canada CPVC schedule 40 ASTM-D2846 PP, CPVC, and PVC venting must be ULC-S636 Certified. IPEX is an approved PVC schedule 40 ANSI/ASTM D1785 manufacturer in Canada, supplying vent Polypropylene ULCS636 material listed to ULC-S636.
Vent adaptors are not designed as load-bearing devices, and must not be used to support exhaust vent piping. All vent pipes must be properly connected, supported, and the exhaust must be pitched a minimum of ¼” per foot back to the appliance to allow drainage of condensate. Failure to properly support vent piping and follow the information in this statement could result in product damage, severe personal injury, or death. D.
E. VENT TERMINATION 1. Two Pipe Roof and Sidewall Vent Terminations Figure 11 – Direct Vent, Roof and Sidewall Vent Terminations 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. When placing support brackets on vent piping, the first bracket must be within 1 foot of the appliance and the balance at 4 foot intervals on the vent pipe.
2. Direct Vent, Optional Horizontal and Vertical Vent Kits Figure 12 – 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. When placing support brackets on vent piping, the first bracket must be within 1 foot of the appliance and the balance at 4 foot intervals on the vent pipe.
PART 6 – INSTALL THE CONDENSATE DRAIN 1. Due to its efficient design, the appliance 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 appliance and disposed in accordance with all local regulations. 2. Use corrosion-resistant materials approved by the Authority Having Jurisdiction (AHJ) to drain condensate.
If using a condensate pump, select one approved for use with condensing boilers and furnaces. The pump should have an overflow switch to prevent property damage from condensate spillage. It is very important that the condensate piping be no smaller than ¾”. To prevent sagging and maintain pitch, condensate piping should be supported with pipe supports, and pitched ¼” per foot to allow for proper drainage. The condensate line must remain unobstructed, allowing free flow of condensate.
3. LP (Liquid Propane) Gas Pipe Sizing The following is intended for use for piping between a Single or Second Stage (Low Pressure) Regulator and the appliance. The following tables list maximum capacity of pipe in cubic feet of gas per hour for an inlet pressure of 11 inches water column and specific pressure drop of 0.5 inches water column based on 1.5 specific gravity for liquid propane.
Figure 16 – Gas Line with Shut-Off Valve Detail Figure 17 – Natural Gas Piping Installation – NOTE: Capacity to be Not Less than Total Capacity of Connected Appliances Figure 18 – LP Gas Piping Installation – NOTE: Capacity to be Not Less than Total Capacity of Connected Appliances PART 8 – WATER PIPING A. GENERAL PLUMBING CONNECTION GUIDELINES Pipe material must be suitable to meet local codes and industry standards.
To ease future maintenance isolation valves are recommended on both the CH and DHW loops. All piping should be insulated. Figure 19 – Piping Legend WHL-012 REV. 12.17.
B. DHW PIPING Use both thread tape and pipe dope to connect to the ¾” domestic water inlet and outlet. A shut off valve between the city water supply and DHW inlet is recommended for ease of service. Westinghouse offers threaded ¾” DHW tankless isolation valves with DHW pressure relief valve for ease of installation and future service. See Optional Equipment, this manual, for part numbers. It may be recommended to use a back flow preventer – check local codes.
Figure 20 – CH and DHW Piping NOTES: 1. This drawing is meant to show system piping concept only. Installer is responsible for all equipment and detailing required by local codes. 2. All closely spaced tees shall be within 4 pipe diameters center to center spacing. 3. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees. 4. The minimum pipe size of DHW piping should be ¾” diameter and CH piping should be 1” in diameter. 5.
Figure 21 – CH Piping – Zoning with Pumps NOTES: 1. This drawing is meant to show system piping concept only. Installer is responsible for all equipment and detailing required by local codes. 2. All closely spaced tees shall be within 4 pipe diameters center to center spacing. 3. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees. 4. The minimum pipe size of DHW piping should be ¾” diameter and CH piping should be 1” in diameter. 5.
Figure 22 – DHW Priority with Outdoor Reset and Recirculation NOTES: 1. This drawing is meant to show system piping concept only. Installer is responsible for all equipment and detailing required by local codes. 2. All closely spaced tees shall be within 4 pipe diameters center to center spacing. 3. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees. 4.
D. CH AND DHW PRESSURE RELIEF VALVES An external pressure relief valve must be installed on this appliance for both the CH and DHW loops. When installing, observe the following guidelines. Pressure relief valves must be installed as close to the appliance as possible. No other valves should be placed between the pressure relief valve and the appliance. Failure to comply with these guidelines can result in substantial property damage, personal injury, or death.
ELECTRICAL SHOCK HAZARD – To ensure safety, turn off electrical power supply at service entrance panel before making any electrical connections to avoid possible electric shock hazard. Failure to do so could result in property damage, serious personal injury, or death. A. GENERAL OPERATING CONDITIONS Temperature o o o Operating Ambient Temperature Range: 14 – 140 F (-10 to 60 C) o o o Operating Relative Humidity: Up to 90% at 104 F (40 C) B. WIRING INFORMATION 1.
Figure 25 – Dip Switch Detail DIP SWITCH GROUP DIP SWITCH 1–3 4 5 6 7 Table 15 – DIP Switch Group OFF DO NOT MOVE Vent Size Gas Type High Fire Low Fire SYSTEM CONTROL SETTINGS MAXIMUM FLAME DETECTING VOLTAGE PRE-PURGE TIME (Tp) SAFETY TIME (IGNITING TIME) (Ts) IGNITING INTERVAL TIME POST-PURGE TIME (Tip) OVER-HEATING 1,2,3 PROTECTION DETECTION TIME PUMP 1 POST CIRCULATING TIME (T1pv) PUMP 2 POST CIRCULATING TIME (T2pv) HIGH AND LOW WATER LEVEL DETECTION TIME HIGH AND LOW WATER LEVEL RECOVERY TIME Tabl
Figure 26 – Electrical Wiring Diagram WHL-012 REV. 12.17.
Figure 27 – Ladder Diagram WHL-012 REV. 12.17.
CONNECTOR PIN 1 2 3 4 CN9 5 65001WS-12 6 7 8 9-12 CN6 1 LW6A4-03 3 1 CN1 2 SMW250-03 3 1 2 CN4 3 LWD1140-06 4 5 6 1 CN8 2 SMW250-04 3 4 1 8 2 10 3 11 4 CN11 12 LWD1140-16 5 13 6 14 7 15 8 16 Table 17 – Appliance Wiring 1 NO.
CONNECTOR NO. OF LOCATION PIN 1 8 2 9 3 10 CN7 4 LWD1140-14 11 5 12 6 13 7 14 1 2 3 4 CN14 5 SMW250-09 6 7 BOARD SILK F.S Flame Detect Sensor OP.S Operating Water Temperature Sensor DH.S DHW Temperature Sensor I.S NOT USED BG.S Exhaust Temperature Sensor ST.S NOT USED SP.
PART 10 – OPERATING SYSTEM INSTRUCTIONS A. CONTROL PANEL Figure 29 – Appliance Control Panel Detail B. LCD DISPLAY DESCRIPTIONS Figure 30 – LCD Display Detail LCD also features a backlit lamp that will illuminate: When a user action is detected (a button is pressed) The display has timed out for approximately 2 minutes C. START-UP SEQUENCE After the appliance is powered ON, the LCD display shows a sequence of information.
NOTE: The initial display screen will differ depending on a number of factors, including whether the appliance detects a call for heat or hot water. The Control System can operate through user and service modes that have specific LCD outputs and dedicated controls, including: Changing the Set-Point Temperature Lock Mode Error Mode Status Display Mode Outdoor Temperature Mode Installer Mode D. CHANGING THE DHW SET-POINT The display shows the icon when the DHW set-point can be changed.
Figure 33 – CH Set-Point Screen o o o o Factory CH Set-Point is 180 F (82 C). CH Set-Point range is 86 – 180 F (30 – 82 C). Turn the dial counterclockwise to lower and clockwise to raise the current CH set-point. After changing the temperature, press the button to save the setting. G. STORAGE MODE Storage Mode indicates that the appliance is heating stored water in the internal storage tank. When Storage Mode is operating the display appears as follows. Figure 34 – Storage Mode Screen H.
Press the button again to return to Operation Mode. NOTE: The Control System will not allow the changes if Lock Mode is activated. Lock Mode will have to be turned off before making further changes.
Display Default Detail Stored water heating function “ON”, “OFF” 5: St ON 6: OH 68 F Maximum Outdoor Temperature 7: OL 5F Minimum Outdoor Temperature 8: FH 00 Maximum Fan speed 9: FL 00 Minimum Fan speed 10: dr NO Initialized burner operation time 11: dI NO Initialized ignition cycle 12: bt 0 Boost Function 13: Ft 1 CH Anti-Frequency time 14: bo 27 F Set differential temperature to turn burner “ON” 15: OF 68 F Warm Weather Shutdown 16: cH 180 F Maximum supply temperat
Display Default Detail Internal CH Pump Post27:PE 1 Purge Time, T/T Satisfied 28: HA HA 0 N/A Internal CH Pump and AP: cP 5 Internal DHW Storage Pump Test Mode 29: AP cP: off Internal CH Pump and or OFF Internal DHW Storage cP: on Pump Test Mode Table 20 – Installer Mode Descriptions Description Allows the user to set the appliance pump post purge time once the appliance CH setpoint and thermostat are satisfied.
Error Code Error Code Description Er:29 APS Open Er:32 DHW Sensor Open or Short Er:33 CH Temperature Sensor Open or Short Er:35 Exhaust Sensor Open or Short Er:36 Abnormal Supply Voltage Er:37 Abnormal Supply Frequency Er:38 Error Appears When Control Stores Data, but Data is not Saved Er:40 Gas Leakage is Detected for Greater than 5 seconds, or three times within 10 minutes Er:41 Fan Speed too High with Flame On Er:42 Jumped Wire Disconnected Er:43 Burner Overheat Switch Open Er:
Error Code Error Code Description Er:66 Mixing Valve Initial Value Error (Mixing Valve Cannot Return to Initial Position) Er:68 Mixing Valve Operation Error (Mixing Valve Stuck in Initial Position) Er:70 Register, Ram, Rom, I/O Port, AD Abnormal, Important EPROM Data or Safe Data Abnormal Er:72 Flame Signal Detected before Ignition Er:76 Poor Communication Er:80 Low Water Level Sensor (Low Water Level Detected Four (4) Consecutive times) Er:81 Low Water Level Circuit Er:85 Freeze Protec
K. ERROR TREE ANALYSIS 1. FLAME DETECTION Figure 38 – Flame Detection Error Analysis Tree 2. GAS DETECTION Figure 39 – Gas Detection Error Analysis Tree WHL-012 REV. 12.17.
3. APS / BURNER OVERHEAT LIMIT / CONDENSATE BLOCK SWITCH Figure 40 – APS / Burner Overheat Limit / Condensate Block Switch Error Analysis Tree 4. DHW / OP / CH OVERHEAT / EXHAUST OVERHEAT SENSORS Figure 41 – DHW / OP / CH Overheat / Exhaust Overheat Sensors Error Analysis Tree L. OUTDOOR TEMPERATURE MODE (OPTIONAL) NOTE: If the system requires a fixed operating temperature, the outdoor sensor is not required and should not be installed.
Figure 42 – Outdoor Reset Curve – See Installer Mode for Curve Setting Descriptions M. 0-10 VOLT INPUT 1. A signal from a building management system may be connected to the appliance to enable remote control. This signal should be a 010 volt positive-going DC signal. When this input is enabled, a building control system can be used to control the set point temperature of the appliance. The control interprets the 0-10 volt signal as follows; when the signal is between 0 and 1.
PART 11 – START-UP PREPARATION Thoroughly clean and flush any system that has used glycol before installing the appliance. A. CHECK / CONTROL WATER CHEMISTRY Chemical imbalance of your water can cause severe damage to your appliance and associated equipment, and may also affect efficiency. You may have to have your water quality professionally analyzed to determine whether you need to install a water softener.
FOR YOUR OWN SAFETY READ BEFORE OPERATING 1. This appliance does not have pilot. It is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand. 2. BEFORE OPERATING: smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor. WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance.
D. PURGE AIR FROM CH AND INTERNAL STORAGE TANK IMPORTANT! While commissioning the system, the air vent on top of the appliance must remain fully open to allow the appliance to properly fill. Failure to keep the air vent open could lead to improper appliance and system operation. To purge air from the system: a. Connect a hose to the purge valve and route hose to an area where water can drain and be seen. b.
G. CONDENSATE REMOVAL 1. This is a high efficiency condensing appliance. Therefore, the appliance has a condensate drain. Condensate fluid is nothing more than water derived from combustion products, similar to that produced by an automobile when it is initially started. Condensate is slightly acidic (typically with a pH of 3 to 5) and must be piped with the correct materials. Never pipe the condensate using steel, copper, brass or other materials that will be subject to corrosion.
LP GAS Minimum Pressure Maximum Pressure Table 23 – Gas Pressure Requirements NATURAL GAS Minimum Pressure Maximum Pressure 3.5” WC 14” WC 3.5” WC 14” WC 6. Remove the manometer. Close the screw on the gas inlet pressure tap. J. SETTING AND VERIFYING THE COMBUSTION SETTING 1. After the appliance has fired, flip DIP switch seven (7) to the ON position (low fire). Proceed to check appliance combustion values.
PART 12 –INSTALLATION AND START-UP CHECKLIST LIGHT OFF ACTIVITIES 1) Fill the Heating System with Water 2) Exhaust Vent and Intake Piping 3) Condensate Piping / Tubing and Components 4) Gas Piping 5) Pressure Relief Valves 6) Wire the Appliance 7) Start-Up, Adjust, and Test DATE COMPLETED YES NO Has the system been cleaned and flushed? Does water chemistry meet requirements? If water chemistry does not meet requirements, have treatment measures been put in place? Check all water piping and conn
Figure 45 – Flame Sight Glass PART 13 – TROUBLESHOOTING PROBLEM No electrical power to the appliance No water available when a faucet is opened Hot water is not available when the faucet is opened. The water temperature is not hot enough or turns cold during use. It takes a long time before hot water flows from the faucet. TROUBLESHOOTING CHART POSSIBLE CAUSES POSSIBLE REMEDIES 1. Is the plug on the power supply cord unplugged 1. Reset the plug. from the electrical outlet? 2.
DIAGNOSTICS AND SUGGESTED CORRECTIVE ACTIONS The appliance control is able to record information about the appliance’s condition at the time of the five 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 appliance history. The table below also includes diagnostic information and possible corrective actions.
Ensure the Appliance Cabinet is Closed Ensure the appliance cabinet is closed. Tighten the two upper and lower screws to secure it. The cabinet must be closed while the appliance is running. Check the Power Source Make sure the power cord is properly connected. The main power line is connected to the manual switch box inside the appliance. Check the Status of the Control Panel Observe the Control Panel to ensure the appliance is powered on, and to check for any error codes.
Have leaks fixed at once by a qualified service technician. Failure to comply could result in substantial property damage, severe personal injury, or death. Operate Pressure Relief Valve Before proceeding, verify that the relief valve outlet has been piped to a safe place of discharge, avoiding any possibility of scalding from hot water. To avoid water damage or scalding due to relief valve operation, a discharge line must be connected to the valve outlet and directed to a safe place of disposal.
7. Rinse the cleaning solution from the heat exchanger as follows: a. Remove the free end of drain hose D1 from the bucket. b. Close service valve V4 and open shutoff valve V2. c. Do not open shutoff valve V1. d. Allow water to flow through the appliance for 5 minutes. e. Close shutoff valve V2. 8. Disconnect hoses from lines. Properly dispose of used cleaning solution. 9. Remove the CH filter from the appliance and clean out any residues. 10. Repeat process on the DHW loop of the appliance.
10. Remove the DHW inlet filter from the appliance and clean out any residues. Cleaning the CH and DHW Inlet Filters (Draining the Appliance) 1. Place a bucket under the appliance to collect the residual water inside the appliance. 2. Press the Power button on the control panel to turn off the electrical power to the appliance. Then turn off the gas valve. 3. Valve off the appliance from the system. If the appliance cannot be isolated from the system, turn off the main water valve. 4.
condensate hose from the heat exchanger. Remove the clear plastic hose from the hose barb. Remove the condensate hose clamp to detach the condensate trap from the drain tube. Remove the condensate trap from the appliance. 3. Remove the bottom cap from the condensate trap. 4. Flush trap with fresh water to remove debris from the trap. NOTE: Ensure the float moves freely within the trap. If the float does not move, DO NOT reinstall the trap. 5.
REPLACEMENT PARTS Figure 52 – Cabinet Replacement Parts NUMBER DESCRIPTION Exhaust Duct Air Intake Cap Exhaust and Air Intake Pipe Adapters Main Control Board (PCB) Front Cover Air Pressure Switch Ignition Transformer Control Panel Bracket Power Switch Bracket Display Panel Manual Power Switch Table 28 – Cabinet Replacement Parts 1 2 3 4 5 6 7 8 9 10 11 PART NUMBER 7855P-002 7855P-003 7855P-004 7855P-217 7855P-218 7855P-262 7855P-007 7855P-219 7855P-220 7855P-012 7855P-014 NUMBER DESCRIPTION 12 13
Figure 53 – Combustion System Replacement Parts NUMBER DESCRIPTION 24 25-A 25-B 26 26-1 26-2 26-3 26-4 26-5 26-6 Air Intake Pipe Gas Orifice Nozzle (NG) 6.5mm Gas Orifice Nozzle (LP) 5.
Figure 54 – Water Piping Replacement Parts NUMBER 39 40 41 42 43 44 45 DESCRIPTION Air Vent CH Supply Upper Pipe Internal DHW Storage Tank DHW Inlet Pipe DHW Outlet Pipe CH Return Pipe CH Supply Lower Pipe Internal CH Primary Pump and DHW 46 Storage Pump 47 Pump Clip 48 Three Way Valve 49 CH Return Block with Filter 50 Clip (DHW Inlet) Table 30 – Combustion System Replacement Parts PART NUMBER 7855P-238 7855P-239 7855P-240 7855P-241 7855P-242 7855P-243 7855P-244 NUMBER DESCRIPTION PART NUMBER 51
Limited Warranty for Combination Appliances Westinghouse warrants each instantaneous appliance and its parts to be free from defects in materials and workmanship according to the following terms, conditions, and time periods. The replacement appliance will be warranted for the unexpired portion of the applicable warranty period of the original appliance. The number of replacement appliances is limited to one (1) per original appliance purchased. Replacement parts will be warranted for 90 days.
17. Any damage or failure resulting from improper water chemistry, or heating anything other than potable water. DEFINITION OF POTABLE WATER - Potable water is defined as drinkable water supplied from utility or well water in compliance with EPA secondary maximum contaminant levels (40 CFR Part 143.3) as shown in the table. Westinghouse will warrant the heat exchanger coil for hardness up to 12 Grains per gallon. 18.
START-UP REPORT LIGHT OFF ACTIVITIES 1) Fill the heating system 2) Electrical 3) Check gas pipe 4) Venting 5) Condensate piping / tubing FINAL DATE COMPLETED ________________ Yes No Check all piping and gas connections, verify all are tight Has the system been cleaned and flushed? Has the boiler and the system been purged of all air? Refer to Start-Up Preparation, this manual. Has the auto air purge feature been used / set? Refer to Start-Up Preparation, this manual.
MAINTENANCE REPORT In unusually dirty or dusty conditions, care must be taken to keep appliance cabinet door in place at all times. Failure to do so VOIDS WARRANTY! The appliance requires minimal periodic maintenance under normal conditions. However, in unusually dirty or dusty conditions, periodic vacuuming of the cover to maintain visibility of the display and indicators is recommended.
WHL-012 REV. 12.17.
WHL-012 REV. 12.17.
MAINTENANCE NOTES WHL-012 REV. 12.17.
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.
