Navien NPE-180A2 Installation Manual page 136

Connecting a Pressure Relief Valve
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
Have you installed the pressure relief valve on the hot water outlet pipe near the water
heater?
Have you installed a discharge drain tube from the pressure relief valve to within 6–12 in.
(150–300 mm) of the floor?
Connecting the Condensate Drain
Have you installed a condensate drain line from the water heater to a suitable drain? Is the
discharge point clearly visible?
If a condensate pump is used, have you checked if it was operational?
Venting the Water Heater
Have you vented the water heater with 2 in. or 3 in. PVC, CPVC, Polypropylene, Stainless
Steel, UL-1738, Type BH Special Gas Vent (ULC-S636) for Category IV Water Heaters
(Canada), or in accordance with all local codes and the guidelines in this manual?
Have you ensured that PVC cellular core pipe has not been used as venting for the water
heater?
Is the vent sloped upward toward the vent termination at a rate of
grade)?
Are all vent runs properly supported?
Have you properly supported the vent termination?
Have you properly sealed all air intake and exhaust joints, from the flue collar to the vent
termination screens?
Have you installed vent termination screens on the exhaust and intake pipes?
Have you checked the venting for leaks?
Is the vent termination at least 12 in. (300 mm) above the exterior grade?
Have you ensured that sufficient make-up air is available?
Is the total vent length within the maximum vent length restriction?
Is there adequate clearance between the intake and exhaust termination?
Connecting the Power Supply
Is the supplied voltage 110-120 V AC?
Is the water heater plugged into a properly grounded outlet?
136 Appendixes
/ in. in diameter?
3
4
/ in. per foot (2 %
1
4
Yes No
Yes No
Yes No
Yes No