Weil-McLain GV90+ User's Information Manual
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Weil-McLain GV90+ User's Information Manual

Gas-fired water boilers
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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
Part number 550-142-055/0411

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Summary of Contents for Weil-McLain GV90+

  • Page 1 ® User’s Information Manual Gas-Fired Water Boilers 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 GV90+ — User’s Information Manual fired water boiler Please read this page first How to use this To . . . Read/use . . . Page . . . manual . . . Learn Warnings and definitions precautions Laundry room or pool — make sure boiler air is Prevent air piped to boiler per manual.

  • Page 3: Hazard Definitions

    GV90+ — User’s Information Manual fired water boiler STOP!! — Read before proceeding Failure to adhere to the guidelines on this page can result User — Have this boiler serviced/ in severe personal injury, death or substantial property inspected by a qualified service tech- damage.

  • Page 4: Prevent Combustion Air Contamination

    GV90+ — 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 the vent system or boiler.
  • Page 5 GV90+ — User’s Information Manual fired water boiler Perform maintenance per schedule below Figure 2 Service and maintenance schedules Service technician Owner maintenance (see Boiler Manual for instructions) (see following pages for instructions) • Check boiler area Daily • Check air openings • Check pressure gauge • Check boiler interior piping • Check venting system Monthly...

  • Page 6: Boiler Must Be Serviced And Maintained

    GV90+ — 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 GV90+ — User’s Information Manual fired water boiler User maintenance procedures (continued) Check boiler interior piping MONTHLY 1. Remove boiler jacket top. Maintenance 2. Visually inspect for leaks around internal piping, circulators, relief valve and other fittings. Immediately call a qualified service technician to repair any leaks. Have leaks fixed at once by a qualifed service technician.

  • Page 8: Check Condensate System

    GV90+ — User’s Information Manual fired water boiler User maintenance procedures (continued) Check condensate system MONTHLY 1. NOTICE — To improve clarity, this illustration of the condensate trap is Maintenance shown with no air inlet pipe attached. If your boiler has an air pipe connected here, DO NOT tamper with it.
  • Page 9 GV90+ — User’s Information Manual fired water boiler User maintenance procedures (continued) Oil blower motor Figure 4 Blower motor EVERY 1. Remove the jacket top panel to access the blower motor. 6 MONTHS 2. Use only Anderol 465. DO NOT use household universal oils.

  • Page 10: How It Works

    GV90+ — User’s Information Manual fired water boiler How it works . . . 1 Integrated boiler control The integrated boiler control (IBC) responds to signals from the room thermostat, air LEGEND pressure switch, inlet water sensor and boiler limit circuit to operate the circulators, gas valve, igniter and blower.

  • Page 11: Water Boiler Overview

    GV90+ — User’s Information Manual fired water boiler GV90+ Water Boiler Part number 550-142-055/0411...

  • Page 12: Operating Instructions

    GV90+ — User’s Information Manual fired water boiler Operating instructions check the boiler pressure temperature gauge. Before attempting to start the boiler, If boiler and system are full of water and properly pressurized, the gauge should read at least 12 psig on most systems. Operating the boiler without proper water content will damage boiler and controls and could result in severe personal injury, death or substantial property damage.

  • Page 13: Common Problems And Solutions

    GV90+ — User’s Information Manual fired water boiler Common problems and solutions Symptom Common Causes Possible Corrections Rapid cycling — boiler Thermostat installed where drafts Locate thermostat on inner wall away from or heat affect reading heat sources or cool drafts. turns on and off frequently Heat anticipator in thermostat Adjust thermostat per manufacturer’s...
  • Page 14 GV90+ — User’s Information Manual fired water boiler Common problems and solutions (continued) Symptom Common Causes Possible Corrections Popping or percolating Mineral deposits in sections due Call qualified service technician to de- to constant use of makeup water lime boiler, if necessary. In some cases, noise heard in boiler deposits will be too heavy to remove with de-liming procedures.
  • Page 15 GV90+ — User’s Information Manual fired water boiler NOTES Part number 550-142-055/0411...
  • Page 16 GV90+ — User’s Information Manual fired water boiler...

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