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User’s Gas-Fired Water Boilers Information Manual With or without Companion Water Heater Available option: Matching High Performance Companion Water Heater (Unit sold separately) 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 or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
— User’s Information Manual fired water boiler Please read this page first WM97+ Boiler components To . . . Read and use . . . Page (WM97+70/110 shown) Learn Piping to system See Hazard Definitions, below precautions Pressure/temperature Locate boiler...
WM97+ — User’s Information Manual fired water boiler STOP!! — Read before proceeding Have this boiler serviced/ • Should overheating occur or gas supply fail inspected by a qualified to shut off, DO NOT turn off or disconnect electrical service technician, at least annually.
WM97+ — User’s Information Manual fired water boiler Prevent combustion air contamination Air contamination Combustion air contamination: Common household and hobby products often contain Ensure that the combustion air will not contain any of fluorine or chlorine compounds. When these chemicals the contaminants in Figure 1 pass through the boiler, they can form strong acids in Combustion air supply openings or intake terminations...
WM97+ — User’s Information Manual fired water boiler Annual startup and general maintenance Figure 2 Service and maintenance schedules OWNER MAINTENANCE (see the following pages for instructions) Contact your boiler service technician to inspect, service and start up your boiler. You must have an annual start-up performed by BEGINNING OF SEASON a qualified service technician to ensure reliable operation of the boiler and system.
WM97+ — User’s Information Manual fired water boiler User maintenance procedures The boiler should be inspected and started annually, at the beginning of the heat- Boiler must ing season, only by a qualified service technician. In addition, the maintenance and care of the boiler designated on page 5 and explained on the following pages be serviced must be performed to assure maximum boiler efficiency and reliability.
WM97+ — User’s Information Manual fired water boiler User maintenance procedures (continued) Check vent & air piping 5. Have vent replaced if it does not operate MONTHLY correctly. 1. Visually inspect the flue gas vent piping and air piping for any signs of blockage, Maintenance leakage or deterioration of the piping.
WM97+ — User’s Information Manual fired water boiler User maintenance procedures (continued) Check boiler piping 3. Lift the relief valve top lever slightly, al- EVERY lowing water to relieve through the valve 1. Check all gas lines and smell for gas and discharge piping.
WM97+ — User’s Information Manual fired water boiler OPERATING INSTRUCTIONS Figure 5 Operating instructions (see page 2 for location of manual gas valve) Part number 550-142-086/0113...
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WM97+ — User’s Information Manual fired water boiler The WM97+ control display Figure 6 WM97+ boiler control display states — press the RIGHT ARROW button to see the INFORMATION screen Part number 550-142-086/0113...
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WM97+ — User’s Information Manual fired water boiler The WM97+ control display (continued) Figure 7 WM97+ boiler control MAINTENANCE notice screens (alternates between wrench screen and maintenance screen) Figure 8 WM97+ boiler control display LOCKOUT SCREEN — screen turns red when boiler locks out — highlight and select MANUAL RESET to reset boiler as shown below.
WM97+ — User’s Information Manual fired water boiler The WM97+ control settings (without CWH) Date and time Maintenance information USER Menu 1. Set year, month, date, hour and minute 1. Obtain installer information, installation functions on the five screens shown below. date and maintenance schedule (last and next dates).
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WM97+ — User’s Information Manual fired water boiler WM97+ Boiler with Companion Water Heater (CWH) See the next three pages for information on control settings and adjustments for boilers with CWH units. WM97+ Boiler Hot Water Can Scald! • Water heated to temperature for clothes washing, dish washing and other sanitizing needs can scald and cause permanent injury.
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WM97+ — User’s Information Manual fired water boiler CWH Date, Time & Maintenance USER Menu functions Date and time 1. Set year, month, date, hour and minute on the five screens shown at right. 2. Keep date and time cur- rent to ensure that mainte- nance information, control fault history and schedule...
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Not ECONOMY recommended for showering with 70°F temperature rise (except for the WM97+155 model). Ideal setting in schedule mode for low-use periods. Maintains tank temperature above 50°F to deter freezing in tank. This VACATION mode will not supply hot water to the user.
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WM97+ — User’s Information Manual fired water boiler Vacation mode quick access Vacation mode access 1. Use the sequence shown below for quick access to enable VACATION mode. 2. When VACATION mode is turned OFF, the WM97+ control reverts to the Performance Mode previously selected. ATTENTION CWH USER! Have the water heater serviced at least once annually by a qualified...