Weil-McLain WM97+ User's Information Manual

Gas-fired water boilers
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User's
Information Manual
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.
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any telephone in your building.
• Immediately call your gas supplier from a neighbor's telephone. Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire department.
Installation & service must be performed by a qualified installer, service technician or the gas supplier.
— WHAT TO DO IF YOU SMELL GAS —
Gas-Fired Water Boilers
With or without Companion Water Heater
Matching High Performance
Companion Water Heater
Part number 550-142-086/0113
Available option:
(Unit sold separately)

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Summary of Contents for Weil-McLain WM97+

  • Page 1 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.
  • Page 2: Hazard Definitions

    — 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...
  • Page 3: Boiler Operation

    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.
  • Page 4: Prevent Combustion Air Contamination

    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...
  • Page 5: Annual Startup And General Maintenance

    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.
  • Page 6: User Maintenance Procedures

    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.
  • Page 7: Check Automatic Air Vents

    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.
  • Page 8: Check Boiler 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.
  • Page 9: Operating Instructions

    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...
  • Page 10 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...
  • Page 11 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.
  • Page 12: Date And Time

    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).
  • Page 13 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.
  • Page 14 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...
  • Page 15 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.
  • Page 16 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...

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