Installation Sheet

56 Rinnai Tankless Water Heater Installaon and Operaon Manual
CONDENSATE DRAIN YES NO
If the condensate pump is installed, is it wired to deacvate the tankless water heater in the event of
failure? For more informaon, refer to the “Condensate Pump Safety Switch Wiring” secon of the manual.
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Did you verify the condensate drain pipe is as short as possible and has a downward pitch toward the drain
or condensate pump?
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Is all condensate drained and disposed of as per local codes?
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Did you use ONLY corrosion resistant materials for the condensate drain lines?
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Did you verify the condensate drain pipe along its enre length is at least the same diameter as the drain
line (1/2 in. NPT)?
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Did you check to ensure the condensaon drain lines are protected from freezing?
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If a oor pump is not available or the drain is above the level of the condensate drain, did you install a
condensate pump?
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Have you veried the condensate drain line is not plumbed with the pressure relief valve?
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Have you conrmed the condensate drain line is not connected with an air condioning evaporator coil
drain?
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Have you veried an external condensate trap is not installed? (This tankless water heater has an integrated
condensate trap.)
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Have you conrmed the end of the condensate drain pipe is open to atmosphere?
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GAS SUPPLY YES NO
Did you verify the gas system is appropriately sized?
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Did you verify the water heater is rated for the gas type supplied?
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Have you performed a gas line and connecon leak test?
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Did you install a manual gas control valve in the gas line to the water heater?
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Is the inlet gas pressure within limits?
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Did you purge the gas line of any debris before connecng the water heater?
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3.14 Post-Water Heater Installaon Checklist Connued
PRESSURE RELIEF VALVE (PRV) YES NO
Does the PRV comply with the standard for Relief Valves and Automac Gas Shuto Devices for Hot Water
Supply Systems ANSI Z21.22, and/or the standard Temperature, Pressure, Temperature and Pressure Relief
Valves and Vacuum Relief Valves, CAN1-4.4?
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Did you verify the PRV is rated up to 150 psi and (at least) the maximum BTU/hr of the tankless water
heater?
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Is the discharge from the PRV piped to the ground or into a drain system as per local codes?
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Is the discharge line from the PRV pitched downward and does it terminate 6 in. (152 mm) above the
drains?
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Is the discharge end of the line plain (unthreaded) and a minimum of 3/4 in. diameter?
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Is the discharge line material suitable for at least 180° F water?
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Did you take measures to protect the PRV and PRV discharge line from freezing?
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Have you veried the PRV is not plumbed with the condensate drain line?
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Have you veried the PRV is not plugged and that reducing ngs, valves, or other restricons are not
installed in the relief line?
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