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HIGH EFFICIENCY CONDENSING
TANKLESS WATER HEATER
199,000 Btu/hr Model
WARNING: 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 or other
combustible materials in the vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a nearby phone. Follow the gas
supplier's instructions.
• If you cannot reach your gas supplier, call the fire department.
Installation and service must be performed by a qualified licensed
service agency or the gas supplier.
(Natural Gas or Propane)
licensed installer,
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Summary of Contents for Rheem 199,000 Btu/hr
- Page 1 HIGH EFFICIENCY CONDENSING TANKLESS WATER HEATER 199,000 Btu/hr Model (Natural Gas or Propane) WARNING: 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 or other combustible materials in the vicinity of this or any other appliance.
- Page 2 TANKLESS WATER HEATER 199 SAFETY CONSIDERATIONS WARNING Installation, start-up and servicing of this unit must be done with due care If the information in this and attention, and should only be performed by competent, qualified, manual is not followed licensed and trained heating technicians. Failure to read and comply with exactly, a fire or explosion all instructions and applicable national and local codes may result in may result causing property...
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Page 3: Table Of Contents
TANKLESS WATER HEATER 199 CONTENTS UNIT’S CONTROLLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 INSTALLER INTERFACE . - Page 4 TANKLESS WATER HEATER 199 WARNING DANGER WARNING HOT WATER CAN SCALD! Should overheating occur Do not use this unit if any or the gas supply fails to part has been under water. Water Temperatures over shut off, do not turn off or Immediately call a qualified 125°F / 52°C can cause severe disconnect the electrical...
- Page 5 150psi of domestic water pressure and a minimum relieving capacity of 199,000 Btu/hr with 3/4" NPT threads. For safe operation of the unit, the relief valve must not be removed from its designated point of installation or plugged.
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Page 6: Unit's Controller
TANKLESS WATER HEATER 199 UNIT’S CONTROLLER ICON FUNCTION Numerical Display Main Display Plus & Minus Temperature Adjustment Flame Burner ON Indicator White Dot Power ON Indicator Faucet DHW Indicator Wrench Service / Reset Return Arrow Enter / Save Numerical Display Service Display Table 1: Controller Indicators and Buttons INSTALLER INTERFACE... -
Page 7: Programming Mode
TANKLESS WATER HEATER 199 Programming Mode NOTE The domestic hot water thermostat is adjusted Adjusting the domestic hot water temperature to its lowest temperature To adjust the DHW: position (120°F/49°C) (120°F/49°C) when shipped from the factory. 1 . Touch the area above the white dot . It’s recommended to set the domestic hot water thermostat to 120°F/49°C as... -
Page 8: Tankless Domestic Hot Water Modes
TANKLESS WATER HEATER 199 TANKLESS DOMESTIC HOT WATER MODES Tankless Domestic Hot Water - Standard and ECO Comfort Modes Standard Mode (OFF): The heat exchanger will not maintain its domestic hot water temperature between demands for hot water . Comfort Mode (ON): The heat exchanger is maintained at the DHW temperature . -
Page 9: Sequence Of Operation
TANKLESS WATER HEATER 199 SEQUENCE OF OPERATION NOTE The unit is equipped with a When the unit is powered up the controller enters a self-diagnostic mode, and Frost Protection feature. This displays the controller software version in the main display . feature will operate the unit’s burner to help protect the unit The Sequence of Operation is as follows:... - Page 10 TANKLESS WATER HEATER 199 This page is intentionally left blank. USER’S INFORMATION MANUAL...
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Page 11: Lighting & Shutting Down The Unit
TANKLESS WATER HEATER 199 LIGHTING & SHUTTING DOWN THE UNIT (LP) USER’S INFORMATION MANUAL... -
Page 12: Maintenance
TANKLESS WATER HEATER 199 MAINTENANCE General Care • Keep combustible materials and flammable liquids and vapors away from the unit. • Keep vent terminals clear of obstructions (snow, dirt, etc .) . Regular Regular Maintenance • Check the domestic hot water temperature at the faucet to ensure the temperature is not too hot . -
Page 13: Relief Valve - Maintenance And Testing
TANKLESS WATER HEATER 199 Relief Valve - Maintenance and Testing CAUTION The field-supplied relief valve manufacturer requires that under normal operating Before testing the relief valve, conditions a “try lever test” must be performed once a year . once a year . Under severe service make certain the discharge conditions, or if corrosion and/or deposits are noticed within the valve body, you pipe is properly connected to... -
Page 14: Service Record
TANKLESS WATER HEATER 199 SERVICE RECORD DATE LICENSED CONTRACTOR DESCRIPTION OF WORK DONE USER’S INFORMATION MANUAL... - Page 15 TANKLESS WATER HEATER 199 This page is intentionally left blank. USER’S INFORMATION MANUAL...
- Page 16 Rheem Sales Co Montgomery, AL. (833) 212-9276 IBC Technologies Inc . 8015 North Fraser Way Burnaby, BC Canada V5J 5M8 (844) HEAT-IBC / (844) 432-8422 IBC Technologies USA Inc . 121 Walter A Gaines Way Lawnside, NJ 08045 (856) 887-0544 84161403 April 2022 ©...