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Vent Kit for Condensing Tankless Gas Water Heater
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
WARNING
CAUTION
DANGER
• Do not connect this vent kit to any appliance not listed in this manual.
• Do not connect this vent kit to any other manufacturer's appliance.
WARNING
If the information in this manual is not followed exactly, a fire or explosion may result causing property
damage, personal injury or death.
CAUTION
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 that comes with the tankless water heater.
• 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.
Installation must conform with local codes, or in the absence of local codes, the National Fuel Gas Code, ANSI
Z223.1 / NFPA54 - latest edition and/or the Natural Gas and Propane Installation Code CSA B149.1 - latest
edition.
The manufacturer reserves the right to discontinue, or change at any time, the designs and/or specifications of its
products without notice.
Refer to the installation procedure video by scanning the two-dimensional barcode on the right.
(https://help.noritz.com/index.php/knowledge-base/nrk-1installation/)
NRK-1
Rev. 06/23
Installation Manual
Model: NRK-1
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.
[Applicable Model]
• EZ98DV, EZ111DV
• NRCR92DV, NRCR111DV
SBB81HS
1
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Table of Contents
Related Manuals for Gorenje NRK-1
Summary of Contents for Gorenje NRK-1
- Page 1 Installation Manual Vent Kit for Condensing Tankless Gas Water Heater [Applicable Model] Model: NRK-1 • EZ98DV, EZ111DV • NRCR92DV, NRCR111DV 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.
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Page 2: General Information
• Do not install in areas with minimum temperatures below 32°F (0°C) as condensation will form inside the B-Vent causing corrosion. • Do not use for anything other than designated tankless water heater (including models manufactured by others). • Appliances can be started up immediately after NRK-1 is installed and inspected. - Page 3 2. Included Accessories and Parts Lists The following accessories are included. Check for any missing items before starting installation. Part Shape Q'ty Part# Diffuser EZ2FVD-NRK Base Junction Support EZ2FVBJS-1 Base Junction Adapter Set EZ2FVBJADS-1 3″ Diffuser Gasket EZ2FVDG-1 Diffuser Items 4″...
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Page 4: General Safety
• If similar vent has already been installed, it must be replaced with this designated new one. • NRK-1 is designed only for installation inside of the B-Vent wall. Do not use it for other installation method. • Make sure the B-Vent rain cap is attached before installation. Do not use this kit if the B-Vent rain cap or B-Vent itself is corroded and damaged. -
Page 5: Before Installation
(Check the condition of installation site) Before installing the NRK-1 vent kit, verify that the installation location is suitable. All checkpoints (1-8) must be verified to be in the “Suitable” column. If any item is found to be in the “Not Suitable” column, STOP and the Flex Vent 2”... - Page 6 Mark “ ” if each condition is Check point Suitable Not Suitable matched. More than 8.5 ft 8.5 ft or less (no turn) There is a turn 6. Vent length from the top of unit to the B-Vent rain 8.5 ft or less No turn from the B-Vent rain cap to the ceiling...
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Page 7: General System Overview
5. General System Overview For 3″ B-Vent B-Vent Rain Cap Spacer Diffuser 3 Diffuser Gasket 2 Polypropylene Pipe (Straight) Roof 3 B-Vent (Straight) Ceiling Base Junction Support PVC Items (Elbows, Straight Pipes) Polypropylene-PVC adapter 2 Air Intake Filter For 4″ B-Vent B-Vent Rain Cap Spacer Diffuser... -
Page 8: Installation
6. Installation If the B-Vent rain cap falls off from the roof due to the installation work, access to the roof for replacement of the rain cap may be required. Any work done incorrectly or not described in this manual can leave parts in the B-Vent and be difficult to remove. In this case, access to the roof to remove or replace parts may be required. - Page 9 Necessary Installation Procedure Accessories and Tools Remove the B-Vent between bottom of ceiling and tank type water heater. • Do not leave the B-Vent elbow. Only straight piping from the B-Vent rain cap to the bottom of the ceiling. • Make sure the bottom edge of the B-Vent is below the ceiling. •...
- Page 10 Necessary Installation Procedure Accessories and Tools 4: This section details how to measure then cut the polypropylene pipes to the required length needed for the measured B-Vent. NOTE: Refer to the table (on pages 12-13) before cutting the polypropylene pipe, Female to prevent the female end from interfering with the base junction support and the base junction adapter attached to the bottom end of the B-Vent.
- Page 11 Necessary Installation Procedure Accessories and Tools 4-3 Cut the polypropylene pipe in accordance with the table with a hacksaw. Example of B-Vent length: 66 1/4″ [Excerpt from the table on page 12] Measure B-Vent Polypropylene pipe length [inch] length Pipe-#1 Pipe-#2 Pipe-#3 Mark...
- Page 12 For B-Vent length from 12″ to 29″ For B-Vent length from 38″ to 65″ B-Vent Polypropylene pipe length [inch] B-Vent Polypropylene pipe length [inch] length length Pipe-#1 Mark Pipe-#2 Pipe-#3 Pipe-#1 Pipe-#2 Mark Pipe-#3 [inch] [inch] 18 or more 12 3/4 or more 4 3/4 19 or more 13 3/4 or more...
- Page 13 For B-Vent length from 74″ to 102″ B-Vent Polypropylene pipe length [inch] length Pipe-#1 Pipe-#2 Pipe-#3 Mark [inch] 40 1/4 12 3/4 or more 4 3/4 40 1/4 13 3/4 or more 5 3/4 40 1/4 14 3/4 or more 6 3/4 40 1/4 15 3/4 or more...
- Page 14 Necessary Installation Procedure Accessories and Tools Attach the diffuser and the 3″ diffuser gasket to the cut side of the pipe-#1. 3″ Diffuser Gasket Diffuser 3″ Diffuser Gasket 4″ Diffuser Gasket (only for 4″ B-Vent) Too Much Fix the diffuser and the 3″ diffuser gasket to the pipe-#1 by 3 screws. •...
- Page 15 Necessary Installation Procedure Accessories and Tools Peel off the release paper of the double sided tape attached on the diffuser top and attach the spacer. Release Paper Spacer for 3″ B-Vent [For 3″ B-Vent] [For 4″ B-Vent] Use spacer for 3″ B-Vent. Use spacer for 4″...
- Page 16 Necessary Installation Procedure Accessories and Tools Pass the pipe-#1 in the B-Vent very carefully. B-Vent Do not insert Push completely as it will connect with other polypropylene pipes. Pipe-#1: Spin Polypropylene pipe with diffuser Connect next polypropylene pipe. Make sure that it is firmly inserted all the way in with Centrocerin, then fix it by using aluminum tape.
- Page 17 Necessary Installation Procedure Accessories and Tools Connect the base junction support with end of the B-Vent. When passing the base junction support through the polypropylene pipe, hold the polypropylene pipe firmly and be careful not to push the polypropylene pipe up the Screwdriver B-Vent rain cap.
- Page 18 Necessary Installation Procedure Accessories and Tools Make PVC pipe route to the water heater by using elbows (90 or 45 degree), straight pipes (short sections). Screwdriver (Example of 3″ B-Vent) (Flat head) PVC items (Elbows, Straight pipes) Polypropylene-PVC adapter You can move the water heater left or right to adjust the PVC pipe.
- Page 19 Necessary Installation Procedure Accessories and Tools Insert the air intake filter into the intake. Follow the instruction in the SV conversion kit installation manual to install the SV conversion kit. Screwdriver Air Intake Filter (Flat head) Box wrench (5/16″) Adjust the exhaust type setting to single vent (SV). Example of GQ-C3260 series Remove the front cover and adjust the DIP switch.
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Page 20: Maintenance
7.Maintenance Periodically check the following to ensure proper operation of the water heater. • The venting system must be examined periodically by a qualified service technician to check for any leaks or corrosion. • Check and confirm that there is no tension to the polypropylene and PVC pipe by hanging or suspending of anything.
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