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4.3.3 Internal (Indoor) Water 4.3.4 External Water Heaters <br /> Heaters and Vent Terminations <br /> • Install the water heater as far away as • Install the water heater as far away as <br /> possible from any air inlet vents. Corro- possible from exhaust vent hoods and <br /> sive fumes, sometimes found in hair/ nail dryer vents. <br /> salons, spas, or other industries exposed • In coastal regions, the water heater should <br /> to toxic fumes, may be released through be installed so that it is sheltered/protected <br /> these vents when not in operation. Chemi- from exposure to sea breeze. Exposure to <br /> cals that are corrosive in nature should not salty spray or breeze can cause corrosion <br /> be stored or used near the water heater or of the water heater. <br /> vent termination. This requirement applies <br /> to internal (indoor) and external (outdoor) Damage and repair due to corrosive <br /> water heater. compounds in the air is not covered by <br /> • In coastal regions, the water heater should warranty. <br /> be installed so that it is sheltered/protected • Install the water heater as far away as <br /> from exposure to sea breeze. Exposure to possible from any air inlet vents. Corro- <br /> salty spray or breeze can cause corrosion sive fumes, sometimes found in hair/nail <br /> of the water heater. salons, spas, or other industries exposed <br /> to toxic fumes, may be released through <br /> • DO NOT install the water heater in areas these vents when not in operation. Chemi- <br /> cals that are corrosive in nature should not <br /> nated with chemicals. be stored or used near the water heater or <br /> • DO NOT use room air in applications vent termination. This requirement applies <br /> where the indoor air is corrosive. Install to internal (indoor)and external (outdoor) <br /> the water heater as direct vent in a sealed water heaters. <br /> closet so that it is protected from the po- <br /> tential of contaminated indoor air <br /> • Install the water heater as far away as <br /> possible from any air inlet vents. Corro- <br /> sive fumes, sometimes found in hair/ nail <br /> salons, spas, or other industries exposed <br /> to toxic fumes, may be released through <br /> these vents when not in operation. Chemi- <br /> cals that are corrosive in nature should not <br /> be stored or used near the water heater or <br /> vent termination. This requirement applies <br /> to internal (indoor) and external (outdoor) <br /> water heaters. <br /> Rinnai Tankless Water Heater Installation and Operation Manual 20 <br />