NSS Installation and Setup Procedures

Question 1

What is a key step before mounting a Navien unit?

Accepted Answer

Check wall clearance and support

Answer

Connect gas line first

Answer

Install venting first

Answer

Fill with water

Question 2

What type of venting must be used with condensing models?

Accepted Answer

PVC, CPVC, or stainless steel

Answer

Copper

Answer

Rubber hose

Answer

Aluminum duct

Question 3

Which component must be flushed before finalizing setup?

Accepted Answer

Water lines

Answer

Gas regulator

Answer

Control panel

Answer

Thermostat

Question 4

What is a key requirement for gas line connection?

Accepted Answer

Correct pipe sizing

Answer

Flexible hose use

Answer

Thread seal only

Answer

Install timer

Question 5

Why is electrical grounding important?

Accepted Answer

To prevent electrical hazards

Answer

To reduce pressure

Answer

To lower water temperature

Answer

To increase voltage

Question 6

Which test ensures leak-free gas connections?

Accepted Answer

Soap bubble test

Answer

Visual check

Answer

Pressure gauge

Answer

Thermal scan

Question 7

When should vent lengths be verified?

Accepted Answer

Before powering on the unit

Answer

After installation

Answer

After 1 week

Answer

During maintenance

Question 8

How should condensate be drained?

Accepted Answer

Slope line downward to a drain

Answer

Use upright pipe

Answer

Close vent

Answer

Add more vents

Question 9

What is configured last in setup?

Accepted Answer

Set operational parameters

Answer

Mount bracket

Answer

Connect exhaust

Answer

Fill gas tank