Instructions / Assembly

1
Installation Manual
NORITZ AMERICA
CORPORATION
Potential dangers from accidents during installation and use are divided into the following three categories.
Closely observe these warnings, they are critical to your safety.
DANGER indicates an imminently hazardous situation which, if not avoided,
will result in death or serious injury.
WARNING indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury.
Installation must conform with local codes, or in the absence of local codes, the National Fuel Gas Code, ANSI Z223.1
/NFPA54-latest edition.
Noritz America reserves the right to discontinue, or change at any time, the designs and/or specifications of its
products without notice.
DANGER
 Never use this Vent Kit other than for the Applicable Model (including the model manufactured by others)
designated in this manual.
WARNING
 If the information in this manual is not followed exactly, a fire or explosion may result causing property
 damage, personal injury or death.
 Do not install only with the EZTR Start-up Guide. Read this manual also before installation.
Requests to Installers
 This manual is for the vent components for the designated tankless water heater. For the installation
of the Tankless Water Heater itself, read the installation manual packed with it.

In order to install this vent kit correctly, read this installation manual carefully, and follow the installation instructions.
 Failures and damage caused by erroneous work or work not as instructed in this manual are not covered by the warranty.
 Check that the installation was done properly in accordance with this installation manual upon completion.
 After completing installation, place this installation manual in a plastic pouch and attach it to the side of the
water heater, or hand it to the customer to retain for future reference.
Vent Kit for Condensing Tankless Gas Water Heater
EZ2FVK-1-LT
Rev. 01/17
SBB80TX
[Applicable Model]
•
[EZTR40] NRC663-FSV
• [EZTR50] EZ98DV (GQ-C2859WX-FF US)
• [EZTR75] EZ111DV (GQ-C3259WX-FF US)
Model: EZ2FVK-1 (Flex Vent 2" Kit 25 feet)
DANGER
WARNING
CAUTION
CAUTION
Prohibited
Be sure to do