Gas Supply - Navien NR-180 Installation Manual

Navien Gas Water Heater Installation
 Pressure Relief Valve
 Is there an approved pressure relief valve installed on the hot water outlet?
 Does the rating plate on the pressure relief valve indicate a BTU level equal to
the maximum BTU rating of the water heater?
 Is the pressure relief valve ¾"?
 Has the pressure relief valve been installed on the hot outlet pipe close to the
exit of the water heater?
 Has a discharge drain tube been installed from the pressure relief valve to within
6~8" of the floor?
 Gas Supply
 Does the gas supply match the water heater's gas type indicated on the rating
plate?
 Is the gas line a minimum of ¾"ID (inner diameter)?
 Is the gas supply line length and diameter sufficient to deliver the required
BTUs?
 Has the gas supply line pressure been measured?
 Is the gas supply pressure sufficient for proper operation (within the ranges
indicated in the specifications section of this manual)?
 Is the gas line is equipped with manual shut-off valve?
 Has the gas line been pressure tested and/or have all fittings been checked for
leaks?
 Has the gas company inspected the installation (if required)?
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