98 Installation Checklist
After installing the boiler, 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.navieninc.com).
Installing the boiler Yes No
Have you maintained the required clearances from building openings and intake air vents?
Have you minimized the distance between the boiler 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 boiler and vent piping clear of combustible materials, including clothing, cleaning
materials, and rags?
Connecting the Gas Supply Yes No
Does the gas supply match the type specified on the boiler’s rating plate?
Is the gas line at least
1
/
2
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 shut-off valve?
Have you tested the gas line pressure and all fittings for leaks?
Has the gas company inspected the installation, if required?
Connecting the Domestic Water Supply Yes No
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?
10. Installation Checklist
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