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Navien NR-180A, Operation & Installation Manual

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Navien NR-180A Operation & Installation Manual Download Page 2

Contents

CONTENTS

Safety Instruction 

3

Accessories and Optional Accessories 

7

Specification

9

Component & Dimensions

-   Key Components : NR-A 

10

-   Key Components : NP-A 

11

-   Dimensions : NR-A, NP-A 

12

-   Key Components : NR 

13

-   Key Components : NP 

14

-   Dimensions : NR, NP 

15

Installation

16

Operation

65

Maintenance

90

Troubleshooting 

100

Wiring Diagram 

104

Components Diagram & Parts List 

113

Summary of Contents for NR-180A

Page 1: ...ation and service must be performed by a qualified installer service agency or the gas supplier Please return the Manual to the customer after installing If the information in these instructions is no...

Page 2: ...ification 9 Component Dimensions Key Components NR A 10 Key Components NP A 11 Dimensions NR A NP A 12 Key Components NR 13 Key Components NP 14 Dimensions NR NP 15 Installation 16 Operation 65 Mainte...

Page 3: ...essages that follow this symbol to avoid possible injury or death Indicates an imminent hazardous situation which if not avoided could result in injury or death Indicates a potential hazardous situati...

Page 4: ...r 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...

Page 5: ...SAFETY Safety Instructions 5 this...

Page 6: ...onoxide never operate the water heater unless it is properly vented to outside and has an adequate air supply for proper operation Be sure to inspect the vent terminator and the air intake pipe annual...

Page 7: ......

Page 8: ...ssories 8 Contact your Navien Water Heater supplier for optional accessories 2 Optional Accessories Description Item Navien Plumb Easy Valve Set Navien Pressure Relief Valve Navien condesate Neutraliz...

Page 9: ...5 9 WC 0 6 WC 3 7 WC 1 0 WC 5 9 WC 8 WC 13 5 WC 0 GPM for A models no minimum flow rate requirement 0 5 GPM for non A models Connection Sizes Cold Water Inlet 3 4 NPT Hot Water Outlet 3 4 NPT Gas Inle...

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Page 13: ...r BH1501047B 22 APS Venturi BH2501413A 7 Heater Clip BH2507447A 23 Manifold PABCR180AMF_001 8 DHW Supply Adapter BH2507348B 24 Burner PABNCN30KDBN_003 9 DHW Inlet Adapter AAVC9EX00016B 25 APS NASS9EX0...

Page 14: ...22 APS Venturi BH2501413A 7 Heater Clip BH2507447A 23 Manifold PABCR180AMF_001 8 DHW Supply Adapter BH2507348B 24 Burner PABNCN30KDBN_003 9 DHW Inlet Adapter AAVC9EX00016B 25 APS NASS9EX00009 10 Sypho...

Page 15: ......

Page 16: ...27 Measuring Gas Pressure 30 Venting Warning 31 Venting Guidelines 31 Venting Clearances 35 Allowable 36 Indoor Installation 37 Vertical Vent Termination 38 Concentric Vent Termination 39 Outdoor Ins...

Page 17: ......

Page 18: ...g Started 18 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 emiss...

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Page 20: ...INSTALLATION Locating the Water Heater 20 or follow local codes...

Page 21: ......

Page 22: ...eating circuit The effect that toxic chemicals such as used for boiler treatment shall not be introduced into the potable water used for space heating The effect that a water heater which will be used...

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Page 24: ...INSTALLATION Pressure Relief Valve 24 Pressure Relief Valve Shut off Valve...

Page 25: ......

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Page 27: ...the gas supply line and the water heater When using rigid pipe Navien recommends the installation of a union on the gas supply pipe close to the water heater to facilitate any future maintenance and s...

Page 28: ...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 psi 3 5 kPa 5 The...

Page 29: ...7 237 217 196 185 173 162 146 132 112 1 1 071 732 590 504 448 409 378 346 322 307 275 252 213 1 1 4 2 205 1 496 775 663 588 532 490 456 428 404 358 511 440 1 1 2 3 307 2 299 1 161 993 880 798 734 683...

Page 30: ...ect a manometer to the pressure port and reset it to zero 5 Re open the manual gas valve Check to see that there are no gas leaks 6 Open multiple fixtures that have high flow rates bathtub showers kit...

Page 31: ......

Page 32: ...INSTALLATION Venting 32 ground or local codes...

Page 33: ...INSTALLATION 33 Venting...

Page 34: ......

Page 35: ...INSTALLATION 35 Venting Clearances 1 Natural Natural...

Page 36: ...2 24 INSTALLATION Venting 36 6 3 6 3 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...

Page 37: ...INSTALLATION 37 Venting Indoor Installation...

Page 38: ...INSTALLATION Venting 38 12 Min Exhaust 12 minimum from any obstruction above below left or right Intake...

Page 39: ...INSTALLATION 39 Venting CONCENTRIC VENT TERMINATION 1 Sidewall Installation 2 Roof Installtion...

Page 40: ...INSTALLATION Venting 40...

Page 41: ...from accumulating Prevent debris liquid or flammable gas from entering the Water Heater intake air pipe terminal It may cause damage to the Water Heater and warranty will be avoided Install the Water...

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Page 44: ...INSTALLATION PCB Board Settings 44...

Page 45: ...INSTALLATION 45 CascadeConnectionandSet upProcedures...

Page 46: ...INSTALLATION 46...

Page 47: ...INSTALLATION 47...

Page 48: ...by the temperature of the tank setup to exterior DHW storage tank usage mode Example DHW Storage Tank Installation Remote Controller NR 10DU Cold Water Supply Line Gas Supply Line Aquastat Hot Water S...

Page 49: ...de ON unit setup value 3 Cascade OFF unit temperature setting when using DHW storage tank Able to adjust cascade connected individual water heater s initiation temperature Cascade ON unit temperature...

Page 50: ......

Page 51: ...0 100 Till 559 000 2 1 60 90 100 Till 578 000 1 2 60 90 100 Till 597 000 3 60 90 100 D 5 D 6 D 7 D 8 Till 739 000 3 1 70 100 Till 758 000 2 2 70 100 Till 777 000 1 3 70 100 Till 796 000 4 70 100 Till...

Page 52: ...9 64 72 4 39 65A 21 2 24 172 60 4 65 100A 4 10 71 92 4 75 65A 21 2 25 179 79 4 85 100A 4 11 79 11 5 34 65A 21 2 26 186 98 5 05 100A 4 12 86 30 5 84 65A 21 2 27 194 17 5 24 100A 4 13 93 49 6 33 65A 21...

Page 53: ...nits 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 During step 1 the power supply shou...

Page 54: ...set up the communication set up should be done Master set up After the power ON each FND1 will display on the PCB as below FND1 display Master set up The Dip SW6 KDC 324 xM PCB Board which is used onl...

Page 55: ...INSTALLATION 55...

Page 56: ...INSTALLATION 56...

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Page 60: ...ON Factory Setting of Dip Switch 60 Set of 4 Switches No 5 Switch 1 2 3 4 ON 1 2 3 4 ON No Model DIP S W 4 ON OFF 1 DHW Storage Tank or Solar System Mode Select DHW Storage Tank or Solar System Normal...

Page 61: ......

Page 62: ...pressure relief valve to within 6 8 of the floor Does the gas supply match the water heater s gas type indicated on the rating plate Is the gas line a minimum of ID inner diameter Is the gas supply li...

Page 63: ......

Page 64: ...and 6 set for the proper model number For the set of 8 DIP switches Unless using multiple units is switch 1 in the down off position Are switch 2 and 3 in the down position If using NR NP series swit...

Page 65: ......

Page 66: ...er outlet temperature is above 125 F a thermostatically controlled mixing valve or temperature limiting valve should be considered to reduce the risk of scalding Contact a licensed plumber or the loca...

Page 67: ...Residential Combi DHW and Space heating application is Ten 10 years from the Effective Date For any Commercial application or Residential Combi application a NP series unit is recommended If a NR seri...

Page 68: ...OPERATION Navien America Inc Limited Warranty 68 12 Grains of hardness may...

Page 69: ...OPERATION 69 Model Description Legend...

Page 70: ...OPERATION General Parts 70 Condensate Water...

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

Page 72: ...OPERATION Remote Controller 72 Hot Water In Use Indicator...

Page 73: ...the Remote Controller On Off To turn the remote controller ON press the Power button To turn the remote controller OFF press the Power button again Model without the clock indication function Will hav...

Page 74: ...OPERATION OPERATION Setting the Clock 74 Hour Minute...

Page 75: ...ater Heater press the Power button and use Up and Down buttons on the remote controller until the desired temperature is displayed on the screen Then simply open any hot water faucet This will automat...

Page 76: ...e Up or Down button to scroll until the desired temperature is displayed on the LCD Monitor When the power is ON the set temperature will be displayed on the remote controller When the power is OFF on...

Page 77: ...Key is pressed temperature decreases by 5 F Each time Pro Key is pressed for 5 seconds in high temperature adjustment mode temperature increases by 10 F 140 180 F or 5 F 180 185 F When the desired te...

Page 78: ...in the hot water lines must be purged before hot water can reach the hot water fixtures When a hot water faucet is opened the unit will automatically start The GREEN LED indicator will illuminate indi...

Page 79: ...OPERATION 79 A Series Recirculation Timer Setting 74...

Page 80: ...tomatically go to the next time period asking you if you want a circulation at that time and so forth You can manually press or to scroll to the time period that you want altered Tip If you have made...

Page 81: ...OPERATION 81 Lock Function Setting...

Page 82: ...OPERATION Well Pump setting function 82...

Page 83: ...ion 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 tog...

Page 84: ...OPERATION 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 85: ......

Page 86: ...button and Lock button together for 3 seconds S tt will appear near the clock and the desired stoppage time for the storage tank will be shown near the temperature value Press the or button to adjust...

Page 87: ...here 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 a...

Page 88: ...OPERATION A Series Internal Recirculation Mode 88 Dip switch setting for Internal Recirculation mode Location of the 3 way valve...

Page 89: ...OPERATION 89 A Series External Recirculation Mode...

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