Navien NR-180(A) Operation & Installation Manual
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Navien NR-180(A) Operation & Installation Manual

Navien nr-180(a); np-180(a); nr-210(a); np-210(a); nr-240(a); np-240(a) condensing water heater
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See also: Service Manual , Owner's Operation Manual
Navien Condensing Water Heater Manual
If the information in these instructions is not followed 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.
This product warranty is valid only used in the
but automatically be voided for other countries. (for
Canada
unit standard only)
- Please return the "Manual" to the customer after installing.
NR-180(A)
NP-180(A)
NR-210(A)
NP-210(A)
NR-240(A)
NP-240(A)
America and Canada
America and

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Summary of Contents for Navien NR-180(A)

  • Page 1 Navien Condensing Water Heater Manual NR-180(A) NP-180(A) NR-210(A) NP-210(A) NR-240(A) NP-240(A) If the information in these instructions is not followed 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.

  • Page 2: Table Of Contents

    Contents Safety Instruction Accessories and Optional Accessories Specification Component & Dimensions - Key Components : NR-A - Key Components : NP-A - Dimensions : NR-A, NP-A - Key Components : NR - Key Components : NP - Dimensions : NR, NP Installation Operation Maintenance...

  • Page 3: Safety Instruction

    Safety Instructions: Safety-related information and instructions have been provided in this manual and on the Navien water heater to warn any person(s) of potential hazards. Read and follow all safety information and instructions throughout this manual. It is very important to understand the safety instructions before installing, operating or servicing Navien Water Heater.

  • Page 4: Safety Precautions

    DO NOT turn on the water heater if cold water supply shut-off valve is closed. DO NOT use this Navien Water Heater for other than its intended purpose as described in this manual. DO NOT attempt to repair or replace any part of your water heater unless it is specifically recommended in this manual.
  • Page 5 Safety Instructions: this...
  • Page 6 Safety Instructions: DANGER WHAT TO DO IF YOU SMELL GAS If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death. DO NOT OPERATE THE WATER HEATER. DO NOT OPERATE ANY FAUCETS.

  • Page 8: Accessories And Optional Accessories

    Accessories and 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 9: Specification

    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 13: Key Components: Nr

    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 AASS9EXFS003C Secondary H/E Power Switch BH1426003A Primary H/E PCB Board NACR1GS32401 Ignition Trans BH1201045A Heater...

  • Page 14: Key Components: Np

    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 AASS9EXFS003C Secondary H/E Power Switch BH1426003A Primary H/E PCB Board NACR1GS32401 Ignition Trans BH1201045A...

  • Page 16: Installation

    Installation - Contents Installation Warnings Getting Stated Check Rating Plate Locating the Water Heater Mounting the Unit to the Wall Plumbing - Plumbing and Water Connection Guidelines - Water Piping Guidelines Pressure Relief Valve Disposal of condensate Condensate Drain & Cleaning Gas Piping Measuring Gas Pressure Venting...

  • Page 18: Getting Started

    Getting Started: The appliances comply with SCAQMD 2012 requirements. NOx emission level of less than 14 nanograms of NOx (calculated as NO ) per joule of heat output or less than or equal 20 ppm of NOx emissions (at 3% O , dry).

  • Page 20: Locating The Water Heater

    Locating the Water Heater: or follow local codes.

  • Page 22: Plumbing

    Plumbing and Water Connection Guidelines and Recirculation water inlet(Only “A” Model) are recommended. Navien water heater is to be used for suitable for water (potable) heating and space heating shall also include the following apply. Piping and components connected to the Water Heater for the space heating application shall be suitable for use with potable water.

  • Page 24: Pressure Relief Valve

    Pressure Relief Valve: Pressure Relief Valve Shut-off Valve...

  • Page 27: 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 28 3. Until pressure testing of the main gas supply line is completed, ensure the gas line to the Navien Water Heater is disconnected to avoid any damage to the Water Heater. 4. The appliance must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than ½...
  • Page 29 Gas Pipe Sizing Chart: Referenced from Uniform Plumbing Code 1997 3/4" 1" 1 1/4" 1,404 1 1/2" 2,103 1,445 1,161 2" 4,050 2,784 2,235 1,913 1,696 1,536 1,413 1,315 1,234 1,165 1,033 2 1/2" 6,455 4,437 3,563 3,049 2,703 2,449 2,253 2,096 1,966...

  • Page 30: Measuring 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”(9.0”) to 13.5”...

  • Page 32: Venting

    Venting: ground or local codes.
  • Page 33 Venting:...

  • Page 35: Venting Clearances

    Venting Clearances: Natural Natural...

  • Page 36: Allowable

    Venting: Navien does allow the reduction from 3” to 2” diameter venting up to 2,000 feet above sea level. Installations above 2,000 feet all require 3” venting. 24’...

  • Page 37: Indoor Installation

    Venting: Indoor Installation...

  • Page 38: Vertical Vent Termination

    Venting: Exhaust 12” minimum from any obstruction (above, below, left or right) Intake 12” Min...

  • Page 39: Concentric Vent Termination

    Venting: CONCENTRIC VENT TERMINATION 1. Sidewall Installation 2. Roof Installtion...

  • Page 40: Outdoor Installation

    Venting:...
  • Page 41 The additional safety issues outlined below must also be followed completely when installing this Navien Water Heater: Vent terminal should not be pointing toward any opening of the building or windows. Do not install the Water Heater in crevices to prevent gas from accumulating.

  • Page 44: Pcb Board Settings

    PCB Board Settings:...

  • Page 45: Cascade Connection And Set-Up Procedure

    Cascade Connection and Set-up Procedures:...
  • Page 48 5.Case V. DHW Storage Tank Mode Install the storage tank and pump in the exterior, and when it comes to exterior circulation pump control system(Aqua-stat) that are controlled by the temperature of the tank, setup to exterior DHW storage tank usage mode. [Example: DHW Storage Tank Installation] Hot Water Supply Line Remote Controller...
  • Page 49 May vary according to user’s environment changes mentioned below. 1) DHW Storage tank’s stoppage. -. Able to change cascade connected water heater’s stoppage temperature. -. Combustion stoppage temperature = DHW setup temperature – R/C combustion stoppage setup value If combustion stoppage temperature isn’t changed, combustion will stop at the DHW setup temperature.
  • Page 51 Exhaust Blind Intake Condensate Drain Caution: One short radius elbow = 8 feet, One long radius elbow = 5 feet Total length (L) = H + W Model Total length(L: Max. ft) Required Load (Btuh) NR-180(A) NR-210(A) NR-240(A) D=3” D=4” D=5”...
  • Page 52 6. Cascade system Plumbing Pipe Size (@ NR/NP-240(A)) T=86 ºF Velocity Pipe T=86 ºF Velocity Pipe Flowrate of Water Q’ty Diameter Q’ty Flowrate of Water Diameter (GPM) (ft/s) (mm/in) (GPM) (ft/s) (mm/in) 7.19 4.78 3/4” 115.07 5.44 3” 14.38 5.61 1”...
  • Page 53 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 54 - The diagram above displays the master unit and slave unit connected with the ready link commnication cable - The Dip SW6(KDC-324-xM PCB Board), which is used only for organizing cascade system, Is to be switched Down if the corresponding unit is the first or the last unit of Cascade connection.

  • Page 60: Operation

    Set of 4 Switches (No.5 Switch): DIP S/W #4 Model DHW Storage Tank or Normal Operation Solar System DHW Storage Tank or Solar System Mode Select Factory Setting of Dip Switch:...

  • Page 62: Pressure Relief Valve

    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? Is the pressure relief valve ¾”? ●...
  • Page 64 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 66 Safety Instructions: This Navien Water Heater is factory set at 120°F (NP Series: 140°F ) for your safety and comfort. Increasing the set temperature increases the risk of accidental scalding. Consult the chart below before you decide to adjust the set temperature.

  • Page 67: Navien Warranty

    Applicable Warranty Period. At its option, Navien will replace the defective component part(s), in accordance with the terms of this Limited Warranty, if it fails in normal use and service during the Applicable Warranty Period.
  • Page 68 Navien America, Inc. Limited Warranty: (12 Grains of hardness may)
  • Page 69 Model Description & Legend:...

  • Page 70: General Parts

    General Parts: Condensate Water...
  • Page 71 General Parts: Condensate Water...

  • Page 72: Remote Controller

    Remote Controller: Hot Water ‘In Use’ Indicator...
  • Page 73 Remote Controller Set-Up Instructions: Turning the Remote Controller On/Off To turn the remote controller “ON”, To turn the remote controller “OFF”, press the Power button. press the Power button again. Model without the clock indication function Will have the clocks turn off as well when the power is turned off.

  • Page 74: Setting The Clock

    Setting the Clock: Hour : Minute...
  • Page 75 (Up) or (Down) button to scroll until the desired temperature is displayed on the LCD Monitor. To operate the Navien Water Heater, press the “Power” button and use (Up) and (Down) buttons on the remote controller until the desired temperature is displayed on the screen.
  • Page 76 Hot Water Temperature Adjustment: When the power is “ON”, the set temperature will be displayed on the remote controller. When the power is “OFF”, only the time will be displayed on the remote controller. Press the (Up) or (Down) button to scroll until the desired temperature is displayed on the LCD Monitor.
  • Page 77 Hot Water Temperature Adjustment: Each time (Up) Key is pressed for 3 seconds, temperature increases by 5°F. When the desired temperature is reached, leave alone and it will automatically set. Each time (Down) Key is pressed, temperature decreases by 5°F. For Temperatures Above 140°F (140~185°F) (Only “NP-A &...
  • Page 78 Once a temperature is selected, the unit will operate at that selected temperature until that temperature is changed. A Navien Water Heater will not provide hot water instantly at the hot water fixture unless an “A” series unit in used with “external recirculation” mode.
  • Page 79 “A” Series Recirculation Timer Setting:...
  • Page 80 When you press the function button at a desired recirculation start time, a ‘ ’ mark will appear meaning, that you are setting that time period for a circulation. After the black box mark appears, it will automatically go to the next time period, asking you if you want a circulation at that time, and so forth.
  • Page 81 Lock Function Setting:...
  • Page 82 Well Pump setting function:...
  • Page 83 Function to set the number of initial activating water heaters when cascade is used: This is a function to decide the number of initial activating water heaters when multiple water heaters are connected together in a cascade.
  • Page 84 Pump activation setting function when hot water is used: This function allows the internal pump to turn on or off (A series models only) when hot water is being used.
  • Page 86 4. Press the “ ” or “ ” button to 5. Press the “ ” button and “Lock” adjust to desired values. button together for 3 seconds *S tt : Setting temp-gap of storage tank When you press the “ ” button and Press the “...
  • Page 87 Applications: On all “A” series, there are two pre-heating modes the unit can operate in: internal recirculation mode or external recirculation mode. The desired mode is selected by manually adjusting a 3-way valve inside the unit and adjusting the DIP switches on the PCB board.
  • Page 88 “A” Series Internal Recirculation Mode: Location of the 3-way valve Dip-switch setting for Internal Recirculation mode...
  • Page 89 “A” Series External Recirculation Mode:...

This manual is also suitable for:

Np-180(a)Np-240(a)Nr-210(a)Np-210(a)Nr-240(a)Nr-180 ... Show all

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