Appendixes 65
5.6 Installation Check list
After installing the water heater, review the following checklist. You should be able to answer “Yes” to all of the items in the checklist. If not,
review the appropriate sections to complete the installation. To troubleshoot any operational problems refer to “Troubleshooting” in the
Owner’s Manual.
If you have additional questions or need assistance with installation, contact Technical Support at 1-800-519-8794 or 1-949-420-0420, or refer
to the technical support section of Navien’s website (www.navien.com).
Installing the Water Heater Ye s N o
Have you maintained the required clearances from building openings and intake air vents?
Have you minimized the distance between the water heater and the vent termination?
Have you minimized the distance between the water heater and major fixtures?
Have you maintained the proper service and maintenance clearances?
Is the make-up air supply sufficient for proper operation?
Is the make-up air supply free from dust, dirt, corrosive elements, and flammable vapors?
Is the water heater and vent piping clear of combustible materials, including clothing, cleaning materials, and rags?
Connecting the Gas Supply Ye s N o
Does the gas supply match the type specified on the water heater’s rating plate?
Is the gas line at least
1
/
2
in or
3
/
4
in ID (Inner Diameter)?
Is the gas supply line sufficient in length and diameter to deliver the required BTUs?
Have you measured the pressure of the gas supply line?
Is the gas supply pressure within the recommended ranges specified in this manual?
Is the gas supply line equipped with a manual full port valve?
Have you tested the gas line pressure and all fittings for leaks?
Has the gas company inspected the installation, if required?
Connecting the Water Supply Ye s N o
Is the water supply pressure sufficient (greater than 40 PSI)?
Have you installed shut off valves on the inlet and outlet to facilitate cleaning of the inlet water filter?
Have you bled the air out at each fixture?
Have you checked each fixture to ensure hot water is being supplied?
Have you cleaned the inlet water filter?
If you installed a recirculation line, have you insulated the hot water pipes and the return line?
Connecting a Pressure Relief Valve Ye s N o
Have you installed an approved pressure relief valve on the water heater?
Does the rating of the pressure relief valve match or exceed the maximum BTU rating of the water heater?
Is the pressure relief valve at least
3
/
4
in in diameter?
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