Pressure Relief Valve - Navien CH-180 Installation Manual

Pressure Relief Valve

Is there an approved pressure relief valve installed on the hot water outlet and
space heating outlet?
Does the rating plate on the pressure relief valve indicate a BTU level equal
to the maximum BTU rating of the combination Water Heater / Heating Boiler?
Is the pressure relief valve 3/4" on the hot water outlet?
Is the pressure relief valve 1" on the space heating outlet?
Has the pressure relief valve been installed on the hot outlet pipe and space
heating outlet close to the exit of the combination Water Heater / Heating Boiler?
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 combination Water Heater / Heating Boiler's gas
type indicated on the rating plate?
Is the gas line a minimum of 3/4" 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 equipped with a 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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