Navien NR-180 Installation Manual
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Navien NR-180 Installation Manual

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Gas Water Heater Operation
WARNING
If not followed this Installation Manual exactly, a fire or explosion may
result causing property damage, personal injury or death.
- Do not store or use gasoline or other flammable vapors and liquids in
the vicinity of this or other appliance.
- WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance.
Do not touch any electrical switch: do not use any phone in your building.
Immediately call your gas supplier from a neighbor's phone. Follow the
gas supplier's instructions.
If you cannot reach your gas supplier, call the fire department.
- Installation and service must be performed by a qualified installer,
service agency or the gas supplier.
CAUTION
This product warranty is valid only used in the
automatically be voided for other countries. (for
unit standard only)
Please return the "Installation Manual" to the customer after installing.
America and Canada
but
America and Canada
3

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Summary of Contents for Navien NR-180

  • Page 1 Gas Water Heater Operation WARNING If not followed this Installation Manual exactly, a fire or explosion may result causing property damage, personal injury or death. - Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or other appliance. - WHAT TO DO IF YOU SMELL GAS ...

  • Page 2: Table Of Contents

    Navien Gas Water Heater Operation █ Installation Manual - Contents Accessories Included with the Water Heater -------------------------- 3 Optional Accessories --------------------------------------- 4 Specifications -------------------------------------------------------------------- 5 Components & Dimensions Key Components : NR-A ----------------------------------- 6 Key Components : NP-A ----------------------------------- 7...

  • Page 3: Included With The Water Heater

    Navien Gas Water Heater Installation █ Accessories: 1. Included with the Water Heater Item Description Navien Gas Water Heater Remote Controller Owner’s Operation and Installation Manual Wall Mounting Bracket Condensate Drain Hose Tapping Screws & Anchors Vent terminators Wall Flanges Check that you have received all of the above parts before installing the Water Heater.

  • Page 4: Optional Accessories

    Gas Water Heater Installation █ Optional Accessories: 2. Optional Accessories: Item Description Navien Plumb Easy Valve Set Navien Pressure Relief Valve Navien condesate Neutralizer Navien Ready-Link Communication Cable Contact your Navien Water Heater supplier for optional accessories.

  • Page 5: Accessories

    █ Specifications: Please review these specifications before installation to confirm proper unit selection: As Navien is dedicated to continuous product improvement, Navien reserves the right to change specifications and/or design and/or discontinue any model or feature without prior notice and without incurring obligations.

  • Page 6: Key Components : Nr-A

    Gas Water Heater Installation █ Key Components: NR-A Description Navien Part No. Description Navien Part No. Intake Air Duct BH2505400B NCVM9EX00005 Fan Motor NAFA9GLPCT01 Transformer BH1205008A Buffer Tank PASNCWBFTANK_001 Exhaust Limit Switch BH1401027A Flow Sensor BH1406004F Secondary H/E PCB Board...

  • Page 7: Key Components : Np-A

    Navien Gas Water Heater Installation █ Key Components: NP-A Description Navien Part No. Description Navien Part No. Intake Air Duct BH2505400B Transformer BH1205008A Fan Motor NAFA9GLPCT01 Exhaust Limit Switch BH1401027A Buffer Tank PASNCWBFTANK_001 Secondary H/E Flow Sensor BH1406004F Primary H/E...

  • Page 8: Dimensions : Nr-A,Np-A

    Gas Water Heater Installation █ Dimensions: NR-A, NP-A NR-A , NP-A Description Diameter 3” Exhaust 3” Air Intake ¾” DHW Supply ¾” Recirculation Inlet ¾” Cold Water Inlet ¾” Gas Inlet NR-A , NP-A Type Dimensions ① ② ③ ④ Model 14”...

  • Page 9: Key Components : Nr

    Navien Gas Water Heater Installation █ Key Components: NR Description Navien Part No. Description Navien Part No. Intake Duct BH2505400B Transformer BH1205008A Fan Motor NAFA9GLPCT01 Exhaust Limit Switch BH1401027A Flow Sensor BH1406004F Secondary H/E Power Switch BH1426003A Primary H/E PCB Board...

  • Page 10: Key Components : Np

    Gas Water Heater Installation █ Key Components: NP Description Navien Part No. Description Navien Part No. Intake Air Duct BH2505400B Transformer BH1205008A Fan Motor NAFA9GLPCT01 Exhaust Limit Switch BH1401027A Flow Sensor BH1406004F Secondary H/E Power Switch BH1426003A Primary H/E PCB Board...

  • Page 11: Dimensions : Nr, Np

    Navien Gas Water Heater Installation █ Dimensions: NR, NP NR, NP Description Diameter 3” Exhaust 3” Air Intake ¾” DHW Supply ¾” Cold Water Inlet ¾” Gas Inlet NR, NP Type Dimensions ① ② ③ ④ Model 14” 29.2” 13.7” 17.3”...

  • Page 12: Installation Warnings

    The appliance should be located in an area where leakage within the unit or at its connections will not result in damage to the surrounding area. Navien will not be responsible for any damage resulting from leaking if adequate drainage is not provided.

  • Page 13: Getting Started

    █ Getting Started: CHECK THE RATING PLATE Navien units come from the factory configured for use with either Liquid Propane (LP) or Natural Gas (NG). Before starting the installation, check the rating plate located on the backside of the front cover of the Water Heater to ensure the unit matches gas type, gas pressure, water pressure and electrical supply.

  • Page 14: Rating Plate

    Max. Water Pressure, *Pression d’eau max. 150 Psi *lb/po2 ANSI Z21. 10. 3b – CSA 4.3B-2004 DO NOT install the Navien Water Heater in areas with excessively high humidity:  DO NOT install the unit in a location where there is excessively high humidity such as bathrooms, damp crawl space and other areas such as this.

  • Page 15: Location Selection

    In addition, as with any water heating appliance, the potential for leakage at some time in the life of the product does exist. If there is no drain, Navien will not be responsible for any water damage that may occur.

  • Page 16: Mounting The Unit To The Wall

    █ Mounting the Unit to the Wall: 1. All Navien units come with an upper mounting bracket pre-drilled at 16” on center for easy installation on standard stud walls. Affix the bracket to the wall securely, ensuring that it is level and that is can support the weight of the Water Heater.

  • Page 17: Plumbing

    Navien Water Heaters required and the header pipe sizing needs to be properly sized to meet the total hot water demand. A water pressure of 40 PSI is recommended for each Water Heater for proper operation of the Water Heaters.

  • Page 18: Water Piping Guidelines

    Gas Water Heater Installation █ Plumbing: Water Piping Guidelines NR, NP Series NR-A, NP-A Series Y-Strainer Y-Strainer NOTICE : If using mixing valves on the outlet, choose one which prevents cold water pressure from overcoming hot water line pressure. The flow rate of hot water may vary when more than two faucets(appliances, fixtures, etc.) are being used simultaneously.

  • Page 19: Pressure Relief Valve

    Please see below for more information on approved pressure relief valves.  Each Navien Water Heater has a high-temperature shut off switch built in as a standard safety feature (called a temperature high limit switch) therefore a “pressure only”...

  • Page 20: Disposal Of Condensate

    Water Heater is installed below height level of laundry tub). ▶ All Navien’s NR & NP Series Water Heaters are condensing gas appliances. A condensate trap comes factory installed inside each Water Heater. ▶...

  • Page 21: Condensate Drain & Cleaning

    Navien Gas Water Heater Installation █ Condensate Drain & Cleaning:  A condensate drain tube is included with the Navien Water Heater. This tube must be connected to the port at the bottom of the unit (see below). The end of the tube should drain to a laundry tub or to a floor drain.

  • Page 22: Gas Piping

     Use the charts on the following pages to properly size the gas supply line.  The gas connection fitting on all Navien units is ¾”. DO NOT use less than ¾” piping.  When using flexible gas line, ensure the pipe’s inner diameter is sufficient to supply the required BTUs, also ensure that the flexible line has no crimps or tight bends this will restrict gas flow.

  • Page 23: Gas Piping Sizing Chart

    Navien Gas Water Heater Installation █ Gas Pipe Sizing Chart: Referenced from Uniform Plumbing Code 1997 Maximum Natural Gas Delivery Capacity in Cubic Feet (ft ) per Hour (0.60 Specific Gravity, 0.5" WC Pressure Drop) Pipe Length in Feet Size...

  • Page 24: Measuring Inlet Gas Pressure

    6. Open multiple fixtures that have high flow rates (bathtub, showers, kitchen sink) to ramp the Water Heater up to its maximum burn. 7. When the Navien Water Heater is at maximum burn, check the inlet gas pressure reading on the manometer; it should read between 5.0” and 10.5” WC for Natural gas between 8.0”...

  • Page 25: Venting

    B149.1 Natural Gas and Propane Installation Code in Canada and in accordance with all applicable local building codes. This Navien Water Heater can be vented with PVC or CPVC. PVC Vent can be used in all cases up to Exhaust flue Temperature 149°F (65°C). Plastic vent can be used in all cases EXCEPT when the incoming or recirculation return water temperatures exceed 160°F (70°C).
  • Page 26  All Navien Water Heaters use 3” diameter exhaust and 3” diameter intake air duct. To ensure the draw and exhaust of air directly to and from the outside, the exhaust vent and air intake vent must be sealed airtight from unit collar to terminator.
  • Page 27 Combustion Air Supply Requirement for Non-Direct Vent  When a Navien Water Heater is installed without a dedicated intake air pipe (non- Direct Vent) communicating directly with the outdoors, combustion air must be supplied to the space. The opening sizes below are Navien’s minimum requirements.

  • Page 28: Contaminated Make-Up Air Will Damage The Unit

    Category IV appliances (typically Type BH Special Gas Vent approved to UL1738-S636)**  Navien does NOT recommend the use of cellular core ABS as venting on any of its products.  When using stainless steel BH type gas vent, the exhaust vent system must be sealed air tight and must be male-to-female in the direction of the flow of condensate.

  • Page 29: Venting Clearances

    Navien Gas Water Heater Installation █ Venting Clearances: All clearance requirements are in accordance with ANSI Z21.10.3 and the National Fuel Gas Code, ANSI Z223.1 / NFPA 54 and CAN/CGA B149.1 National Gas and Propane Installation Code. ANSI Z223.1 / NFPA 54 CAN/CGA B149.1 National Gas and Propane Installation Code.

  • Page 30: Allowable Vent Lengths

    Gas Water Heater Installation █ Venting: Allowable 3" Venting MAX # of MODEL EQUIVALENT LENGTHS LENGTH ELBOWS Reduce the maximum vent length 100’ accordingly for each elbow used: 100’ Each 90˚elbow equates to 5 linear feet of vent. 100’ Each 45˚elbow equates to 2 linear feet of vent. NOTE: The maximum lengths listed above are for the exhaust pipe section only.

  • Page 31: Vent Configuration Options

    Navien Gas Water Heater Installation █ Venting: Indoor Installation Vent Configuration Options: The following diagrams represent some typical venting configurations and are included to assist you in your designing your vent system. Possible configurations are not limited to these diagrams.
  • Page 32 Gas Water Heater Installation █ Venting: Option #3: 3” 2-pipe Vertical Vent Termination Exhaust 12” minimum from any obstruction (above, below, left or right) Intake 12” Min...
  • Page 33 Navien Gas Water Heater Installation █ Venting: CONCENTRIC VENT TERMINATION "A" "B" "C" "D" DIMENSION 38-7/8" 3" 4-1/2" 21-1/8" 1. Sidewall Installation COMBUSTION AIR COMBUSTION AIR VENT VENT MAINTAIN 12" MIN. CLEARANCE ABOVE HIGHEST ANTICIPATED 1" MINIMUM NOW LEVEL OR GRADE, WHICHEVER IS GREATER.

  • Page 34: Outdoor Venting

    Bottom < Clearance > <Venting Disassemble> Venting Clearance  When Navien Water Heater is installed outdoor, water heater installed location should be in open unroofed area with following clearance table below. Bottom of water heater Min. 12” Min. 0.5” Back of water heater Side of water heater Min.
  • Page 35 Read all safety warnings in the “Owner’s Operation Manual”. The additional safety issues outlined below must also be followed completely when installing this Navien Water Heater: Follow all local codes and/or the most recent edition of the National Fuel Gas Code (ANSI Z223.1/NFPA 54) in the USA or the Natural Gas and Propane...

  • Page 36: Electrical Connections

     The electrical supply required by the Water Heater is 110~120VAC at 60 Hz with a maximum 2 A rating.  Do not connect 220~240V AC to this Navien Water Heater. It will damage the Water Heater and this damage is not covered under warranty.

  • Page 37: Remote Controller Installation

    Navien Gas Water Heater Installation █ Remote Controller Installation: Remote Controller NR-10DU The following are considerations for determining the location of the remote controller:  Disconnect the power to the water heater before installing the remote controller.  The wire on the reserve of a remote controller is connected to the orange wire on the PCB board which is located on bottom of the Water Heater.

  • Page 38: Pcb Board Settings

    Hot water temperatures over 125°F can cause severe burns instantly or death from scalding.  With the Navien Water Heaters, the temperature has been preset at the factory to 120ºF (NR, NR-A), 140ºF (NP, NP-A). The PCB board will electronically control this temperature.

  • Page 39: Cascade Connection And Set-Up Procedures

    Navien Gas Water Heater Installation █ Cascade Connection and Set-up Procedures: Step 1: Plumbing The Water Heater unit can be connected with other units up to 16 units for user’s purpose. CAUTION This drawing can be a useful guideline when installing a unit. However, installation may vary depending on the location circumstances, local building codes or state regulation.
  • Page 40  Install Check valve in either “A” or “B”.  Navien recommends to use "A" Series for recirculation.  Because NR/NP models don't have circulation pumps inside, external pump shall be installed to use recirculation function, additional pump could be installed out of the unit.
  • Page 41 Navien Gas Water Heater Installation 3.Case III NR, NP + NR-A, NP-A Model Recirculation Remote Controller (NR-10DU) Slave n-15 Slave n-14 Slave n-1 Master Unit SYMBOL Union Communication Cable Ball Valve Cold Cold Cold Cold Check Valve "B" "B" "C"...
  • Page 42 Gas Water Heater Installation Step 2: The Common Vent A “combined” vent is a venting system for two or more appliances at one level that are attached to a common vent. Least Total Height is the vertical distance from the highest appliance flue outlet in the system to the top of the vent.
  • Page 43 Navien Gas Water Heater Installation Exhaust “D” “H” “W” Blind Intake Condensate Drain Caution: One short radius elbow = 8 feet, One long radius elbow = 5 feet Total length (L) = H + W Required Model Total length(L: Max. ft) D= 3”...
  • Page 44 Gas Water Heater Installation 5. Cascade system Plumbing Pipe Size (@ NR/NP-240(A)) △T=86 ºF △T=86 ºF Velocity Pipe Velocity Pipe Q’ty Flowrate of Water Diameter Q’ty Flowrate of Water Diameter (GPM) (ft/s) (mm/in) (GPM) (ft/s) (mm/in) 3/4” 7.19 4.78 115.07 5.44 3”...

  • Page 45: Dip Switch Settings

    Navien Gas Water Heater Installation Step 3: Cable connection and DIP switch change The water heater unit can be connected with other units up to 16 units using communication cables. After choosing one of the units as the master unit, connect the cables and change the DIP switch 2 on the PCB as below.
  • Page 46 Gas Water Heater Installation -The diagram above displays the master unit and slave unit connected with the ready link communication cable. - The Dip SW6(KDC-324-xM PCB Board), which is used only for organizing cascade system, Be switched ON if the corresponding unit is the first or the last unit of Cascade connection. CN12 FND 1 Dip S/W 6...
  • Page 47 Navien Gas Water Heater Installation Slave set-up After the master set-up, push the SW3 and SW4 of slave 1 unit simultaneously for more than 3 seconds. FND1 of the slave 1 unit will be changed to “S001”. Slave 2 unit also can be set-up as above.
  • Page 48 Gas Water Heater Installation Unit Master Unit Slave 1 Unit Slave 2 Unit Slave 3 Unit FND1 FND1 display: Master set-up (slave unit addition) Slave unit set-up This procedure is same as the 2.2 Slave set-up of the 3. Step 3: Communication set-up. After the slave set-up, each FND1 will be changed on the PCB as below: Unit Master Unit...

  • Page 49: Installation Checklist

    Navien Gas Water Heater Installation █ Water Heater DIP Switch Settings: There are two sets of DIP switches; one set has 6 switches and the other has 8 switches. Set of Dip Switch #1. (6 Switches): Description Function Operation Select 1...
  • Page 50 Gas Water Heater Installation 5 & 6: Model Selection DIP S/W Model NR/NP-180, NR/NP-180A NR/NP -210, NR/NP -210A NR/NP -240, NR/NP -240A Set of 8 Switches: Operating Mode Selection: Description Function Ready-Link Ready-Link Single Unit Operation or Multi-System Select Multi-System Master Multi-System Slave Location select Korea...
  • Page 51 DIP Switch # Description With Pump Normal (NR-180A, NR-210A, NR-240A, External Recirculation NP-180A, NP-210A, NP-240A) Internal Recirculation Without Pump (NR-180, NR -210, NR -240, NP-180, NP -210, NP -240) 7 & 8: Temperature Selection Temperatures Regular Premium DIP Switch # Models Models...
  • Page 52 Gas Water Heater Installation █ Installation Checklist:  Selecting the location and installing the Water Heater:  Are the proper clearances from windows, doors and other intake air vents maintained?  Is the distance between the Water Heater and point of vent termination minimized? ...

  • Page 53: Gas Supply

    Navien Gas Water Heater Installation  Pressure Relief Valve  Is there an approved pressure relief valve installed on the hot water outlet?  Does the rating plate on the pressure relief valve indicate a BTU level equal to the maximum BTU rating of the water heater? ...

  • Page 54: Electrical Wiring

    Gas Water Heater Installation  Venting  Has the water heater been vented with 3” ABS (except cellular core ABS), 3” PVC, 3” CPVC, Concentric Vent kit or Type BH Special Gas Vent (S636 PVC or stainless steel) for Category IV appliances or in accordance with this manual and/or your local code? ...
  • Page 55 Navien Gas Water Heater Installation  DIP Switch Settings  For the set of 6 DIP switches:  Are switch #1 and #2 in the down (off) position?  Is switch #3 properly set for the gas supply type?  Is switch #4 in the down (off) position? ...

  • Page 56: Factory Setting Of Dip Switch

    For any troubleshooting issue, see the “Error Codes” section of the Owner’s Operation Manual. For any questions or problems during the installation, contact Navien’s technical department toll-free at 1- 800-519-8794 (714-258-9005) or visit the technical support section of the website at: •...

  • Page 57: Wiring Diagram

    Navien Gas Water Heater Installation █ Wiring Diagram: NR-A If any of the original wires as supplied with the heater must be replaced, they must be replaced with their equivalent.

  • Page 58: Wiring Diagram

    Gas Water Heater Installation █ Wiring Diagram: NP-A If any of the original wires as supplied with the heater must be replaced, they must be replaced with their equivalent.

  • Page 59: Wiring Diagram

    Navien Gas Water Heater Installation █ Wiring Diagram: If any of the original wires as supplied with the heater must be replaced, they must be replaced with their equivalent.
  • Page 60 Gas Water Heater Installation █ Wiring Diagram: If any of the original wires as supplied with the heater must be replaced, they must be replaced with their equivalent.

  • Page 61: Ladder Diagram

    Navien Gas Water Heater Installation █ Ladder Diagram: NR-A NEUTRAL Relay 1 120VAC Relay 2 Power SGV 1 Relay 3 Switch SGV 2 Relay 4 Igniter Relay 6 Transformer Primary Pump Relay 7 Secondary AC150V Speed Control Water Adjustment AC19V...
  • Page 62 Gas Water Heater Installation █ Ladder Diagram: NP-A NEUTRAL Relay 1 120VAC Relay 2 Power SGV 1 Relay 3 Switch SGV 2 Relay 4 Relay 6 Igniter 2-Way V/V Relay 9 Transformer Primary Pump Relay 7 Secondary AC150V Speed Control Water Adjustment AC19V DC15V...
  • Page 63 Navien Gas Water Heater Installation █ Ladder Diagram: NEUTRAL Relay 1 120VAC Relay 2 Power SGV 1 Relay 3 Switch SGV 2 Relay 4 Igniter Relay 6 Transformer Primary Mixing Valve Mixing Control Secondary AC150V AC19V DC15V Speed Control Water Adjustment...
  • Page 64 Gas Water Heater Installation █ Ladder Diagram: NEUTRAL Relay 1 120VAC Relay 2 Power SGV 1 Relay 3 Switch Relay 4 SGV 2 Igniter Relay 6 2-Way V/V Relay 9 Transformer Primary Mixing Valve Mixing Control Secondary AC150V AC19V DC15V Speed Control Water Adjustment AC26V...

  • Page 65: Components Diagram & Parts List

    Navien Gas Water Heater Installation █ Components Diagram & Parts List: 1-1. Case Disassemble : NR-A, NR, NP-A, NP...
  • Page 66 Gas Water Heater Installation 1-2. Case Part List : NR-A, NR, NP-A, NP Description Navien Part No. Remark BBK05011117 180 A BBK05011118 210/240 A Case BBK05011137 BBK05011138 210/240 A Cover BBR15012151 Navien Logo BH2603009A Case upper bracket BH2505277A Case lower bracket...
  • Page 67 Navien Gas Water Heater Installation 2-1. Burner Disassemble : NR, NR-A NP, NP-A 19-1 18-2 18-4 18-1 20-1 18-3 13-1 Detail 'A'...
  • Page 68 Gas Water Heater Installation 2-2. Burner Part List : NR-A, NR, NP-A, NP Description Navien Part No. Remark BH2507510B 210/240 NG BH2507509B 180 NG Gas pipe BH2507512B 210/240 Propane BH2507511B 180 Propane BH2507359B 180 NG BH2507360B 210/240 NG GPS venturi...
  • Page 69 Navien Gas Water Heater Installation Description Navien Part No. Remark Tube BH2203001A BH2202023A Tube BH2202024A 210/240 BH2202022A Tube BH2202025A 210/240 BH2202036A Tube BH2202041A 210/240 O-ring BH2421003A O-ring BH2421008A Screw (D4 x 8L) BH1705007A Screw (D4 x 10L) BH1705001A Bolt (M4 x 12L)
  • Page 70 Gas Water Heater Installation 3-1. Water Way Disassemble : NR-A 28-1 28-3 28-2...
  • Page 71 Navien Gas Water Heater Installation 3-2. Water Way Disassemble : NP-A 28-1 28-3 28-2...
  • Page 72 Gas Water Heater Installation 3-3. Water Way Disassemble : NR 28-1 28-3 28-2...
  • Page 73 Navien Gas Water Heater Installation 3-4. Water Way Disassemble : NP 28-1 28-3 28-2...
  • Page 74 Gas Water Heater Installation 2-2. Water Way Part List : NR-A, NP-A, NR, NP Description Navien Part No. Remark Flow sensor BH1406004F Water adjustment valve NCVM9EX00005 Heat exchanger packing BH2406048A BBM20341018 NR-180A BBM20341017 NR-210/240A BBM20341019 NP-180A BBM20341020 NP-210/240A Heat exchanger ass’y...
  • Page 75 Navien Gas Water Heater Installation Description Navien Part No. Remark Inlet water filter BH1303013A “A” Series 3-Way valve BH2507467C “A” Series BH2507348B DHW Supply adapter “Non-A” Series BH2507572A BH2507528B NR-A BH2507530B NP-A BH2507574A NR-180 Cold water inlet pipe BH2507575A NR-210/240...
  • Page 76 Gas Water Heater Installation Description Navien Part No. Remark Packing ring (3/4") BH2406032A Bolt M4 x 12L (STS) BH1612007A Screw D4 x 6L BH1705006A Bolt D4 x 10L (STS) BH1611006A Bolt M3 x 5L BH1603002A Bolt M4 x 14L (STS)
  • Page 77 Navien Gas Water Heater Installation █ Service GENERAL TROUBLESHOOTING PROBLEM POSSIBLE SOLUTIONS It takes a long time to get hot water to the fixtures.  Circulation pump is in freeze protection mode. Circulation pump needs to change hot water circulation mode.
  • Page 78 Gas Water Heater Installation Printed Date: xx(Month). xx(Day). xxxx(year)

This manual is also suitable for:

Nr-240aNp-180Np-180aNp-210Nr-180aNr-210 ... Show all

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