Navien NPE-180A Installation Manual Download Page 49 | Manualshive

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5.4 Ladder Diagram

HOT

NEUTRAL

VENTURI

Relay 1

Relay 2

Relay 3

Relay 4

IGNITER

PUMP

Speed Control

Primary

MCU 1

MCU 2

DC24V

Flow Sensor

APS

DC12V

FAN

Water Adjust

Valve

Flow Control

DC15V

UART

Communication

Interface

Ready Link

Interface

Ready Link

Fan

Hall Sensor

Outlet

Thermistor 2

Inlet

Thermistor 1

Inlet

Thermistor 2

Outlet

Thermistor 1

Exhaust

Thermistor

EXT_PUMP

FRONT

PANEL

Communication

Interface

Relay 3

Relay 2

Relay 4

Driving Circuit

MGV1

MGV2

Relay 1

FSA Power

Switch

Flame Rod

200V

PWM

EMI

FILTER

DC5V

H.T.L

WD-PSS

SMPS

Primary

Secondary

3.

15

A

[NPE-180A/ 210A/ 240A]

Appendixes 49

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Summary of Contents for NPE-180A

Page 1: ...ormed by a qualified installer service agency or the gas supplier The installation must conform with local codes or in the absence of local codes the National Fuel Gas Code ANSI Z223 1 NFPA 54 and or...

Page 2: ...Supply 15 3 4 Connecting the Water Supply 19 3 5 Connecting the Condensate Drain 25 3 6 Venting the Water Heater 26 3 7 Connecting the Power Supply 33 3 8 Setting the DIP Switches 33 4 Installing a Ca...

Page 3: ...se landline phones From a neighbor s phone call your gas provider and follow their instructions If you cannot reach your gas provider call the fire department Do not use or store flammable products su...

Page 4: ...line that could obstruct the air flow in or out of the water heater This water heater has been approved for use in the USA and Canada only Using the water heater in any other country will void the man...

Page 5: ...allation Manual Wall Mounting Bracket Tapping Screws Anchors 2 Vent Termination Caps 2 Wall Flanges Conversion Kit Spare Parts 2 2 Accessories The following optional accessories are available for the...

Page 6: ...on Type Indoor or Outdoor Wall Hung Venting Type Forced Draft Direct Vent Ignition Electronic Ignition Water Pressure 15 150 PSI Natural Gas Supply Pressure from source 3 5 10 5 WC Propane Gas Supply...

Page 7: ...Error g Master Unit A code will appear on the display Cascade operation b Hot Water Recirculation h Display Recirculation Mode c Diagnostics button i Up button For installers only Increases the temper...

Page 8: ...Temperature Sensor Exhaust Body Ignition Transformer Burner Primary Heat Exchanger Secondary Heat Exchanger Flow Sensor Condensate Trap Front Panel PCB Box Water Adjustment Valve Water Inlet Filter C...

Page 9: ...Heat Exchanger Secondary Heat Exchanger Flow Sensor Condensate Trap Front Panel PCB Box Mixing Valve Water Inlet Filter Condensate Drain Fitting Condensate Drain Lid Fan Motor Dual Venturi Gas Pipe AP...

Page 10: ...iption Diameter A Air Intake 2 B Exhaust Gas Vent 2 C Hot Water Outlet 3 4 D Recirculation Inlet 3 4 E Cold Water Inlet 3 4 F Gas Inlet 3 4 G Condensate Outlet 1 2 OverheadView 3 77mm 6 7 170mm 4 5 11...

Page 11: ...s Vent 2 C Hot Water Outlet 3 4 D Cold Water Inlet 3 4 E Gas Inlet 3 4 F Condensate Outlet 1 2 OverheadView 3 77mm 6 7 170mm 4 5 115mm 0 4 10mm 1 5 38mm 14 3 364mm 2 6 67mm A B Supply Connections 13 2...

Page 12: ...nstructions at altitudes higher than 4 500 ft please contact Navien Cet appareil est certifi pour une utilisation des altitudes de 0 4 500 pieds 1 370 m conform ment aux toutes les proc dures d instal...

Page 13: ...sate Drain on page 25 The water heater should be located in an area where leakage of the unit or connections will not result in damage to the area adjacent to the appliance or to lower floors of the s...

Page 14: ...d on the installation location ensure the following clearances are maintained Clearance from Indoor Installation Outdoor Installation Top 9 inches 229mm minimum 36 inches 900mm minimum Back 0 5 inches...

Page 15: ...to the rating plate Use only the same gas type indicated on the rating plate Using a different gas type will result in abnormal combustion and malfunction of the water heater Gas supplies should be co...

Page 16: ...flow When using rigid pipe Navien recommends the installation of a union on the gas supply line close to the water heater to facilitate any future maintenance or service CAUTION Prior to using an exce...

Page 17: ...230 2 080 1 950 1 840 1 630 3 11 300 7 780 6 250 5 350 4 740 4 290 3 950 3 670 3 450 3 260 2 890 4 23 100 15 900 12 700 10 900 9 660 8 760 8 050 7 490 7 030 6 640 5 890 in Cubic Feet ft3 per Hour 0 60...

Page 18: ...Inlet Gas Pressure WARNING The water heater cannot function properly without sufficient inlet gas pressure Measuring the inlet gas pressure should be performed by a licensed professional only The inle...

Page 19: ...short as possible to deliver hot water to the fixtures more quickly To conserve water and energy insulate all water piping especially the hot and recirculation water lines Never cover the drain or pre...

Page 20: ...on the front panel and set the position of the 2 way valve inside the water heater By default the DIP switches are set to OFF When you use a recirculation mode there will be some minor ciency loss as...

Page 21: ...rculation Mode To use the external recirculation mode Connect the water supply to support recirculation Refer to the 1 NPE 180A 210A 240A diagram on page 20 Set the 2 way valve inside the water heater...

Page 22: ...tion 150W 1 5A Length 6 ft 183 cm When using a pump with larger power requirements than the listed specication above a relay should be used to ensure proper operation Remove the water heater front cov...

Page 23: ...irculation Using External Pump Only Remove the 2 screws holding the PCB box in place and remove 3 the PCB box from the system Remove Screws here Connect the external pump wiring connector to the conne...

Page 24: ...s equal to or greater than the maximum input BTU H rating of the water heater Direct the discharge piping of the pressure relief valve so that hot water will not splash on anyone or any nearby equipme...

Page 25: ...gent must be replaced periodically Depletion of the neutralizing agent will vary based on the usage rate of the water heater During the first year of operation the neutralizer should be checked every...

Page 26: ...aust plumes away from buildings as long as the total allowable vent lengths maximum number of elbows and distances to air intake restrictions are observed Do not store hazardous or flammable substance...

Page 27: ...or vent outlet 3 ft 91 cm J Clearance to nonmechanical air supply inlet to building or the combustion air inlet to any other appliance 36 in 91 cm 12 in 30 cm K Clearance to a mechanical air supply in...

Page 28: ...However building codes in most jurisdictions disallow negative pressures in residences In a home with a well balanced air supply the heat exchanger should not be in danger of freezing Because the cau...

Page 29: ...regulator vent outlet 36 in 91 cm J Clearance to nonmechanical air supply inlet to building or the combustion air inlet to any other appliance 36 in 91 cm 48 in 120 cm below or to side of opening 12 i...

Page 30: ...commended Vent Materials USA PVC Schedule 40 Solid Core CPVC Schedule 40 or 80 Solid Core Approved Polypropylene Canada Type BH Special Gas Vent Class IIA PVC Type BH Special Gas Vent Class IIB CPVC T...

Page 31: ...es The following are some possible indoor venting options 2 or 3 Two pipe Sidewall Venting 12 300mm min 12 300mm min Exhaust Gas Exhaust Gas InteriorView ExteriorView Intake Air Intake Air Non concent...

Page 32: ...tdoors maintain clearances from building openings as described in the Non Direct Venting Single Pipe section on page 28 Outdoor installation areas should be in an open unroofed area and should allow f...

Page 33: ...nd gas piping is complete and the water heater has been filled with water Do not connect the water heater to a 220 240V AC power supply Doing so will damage the water heater and void the warranty All...

Page 34: ...N 2 OFF 3 OFF External Recirculation 1 OFF 2 ON 3 OFF Intelligent Preheating 1 ON 2 ON 3 OFF Recirculation Mode External Pump Connected External Pump Only 1 OFF 2 OFF 3 ON Internal Recirculation A mod...

Page 35: ...aters to meet high volume hot water demands Some possible connection options include the following Recirculation via Internal Pumps A model only Communication Cable DHW Supply Line Recirculation Line...

Page 36: ...ter heater is set as the master 4 1 1 Piping Sizes and Considerations When plumbing a cascading system consider the following pipe diameters and flow rates Note that flow rates above 6 6 ft s may caus...

Page 37: ...he master water heater press and hold the 4 Diagnostic and Up buttons for more than 5 seconds All the display screens on the configured water heaters will return to the temperature display Note To add...

Page 38: ...utilization equipment or accessories who is experienced in such work familiar with all precautions required and has complied with all of the requirements of the authority having jurisdiction In Canada...

Page 39: ...as ONLY Once the front cover is removed place it in a safe location to 3 prevent accidental damage With the internal components exposed locate the gas inlet pipe and the Gas Valve near the left side o...

Page 40: ...el Dip switch according to the gas type 9 WARNING Be sure to turn off the power before changing the DIP switch setting 1 2 NG 1 2 LP 1 2 3 1 2 4 5 6 7 8 9 10 ON ON DANGER When conversion is required b...

Page 41: ...to page 43 Measure the CO2 value at low fire If the CO2 value is not within 0 5 of the value listed in Table 2 the gas valve set screw will need to be adjusted If adjustment is necessary locate the se...

Page 42: ...ure 10 Note The set screw is located behind the screw on cover This must be removed first d At high fire do not check the offset value and never adjust the gas valve DANGER Improper gas valve settings...

Page 43: ...OPR 2 Press the Information Button once to acess the Operation 3 Mode menu Press the Up button once to set the water heater to 4 opearate at 1 stage MIN MIN 1 To set the water heater to operate at 2...

Page 44: ...45 50 0 1 2 3 4 5 6 7 8 9 10 Pressure Loss psi Water Flow GPM NPE 240A 240S 0 5 10 15 20 25 30 35 40 45 50 0 1 2 3 4 5 6 7 8 9 10 Pressure Loss psi Water Flow GPM NPE 210A 210S 0 5 10 15 20 25 30 35 4...

Page 45: ...0 5 0 6 0 7 0 8 0 9 0 10 0 11 0 0 30 60 90 120 150 Flow GPM 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 10 0 0 30 60 90 120 150 Flow GPM Note At altitudes above 2 000 ft 610m the outlet flow will be reduc...

Page 46: ...1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 10 0 11 0 12 0 13 0 0 30 60 90 120 150 Flow GPM T Temperature Rise NPE 240S T Temperature Rise NPE 210S 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 10 0 11 0 12 0 0 30...

Page 47: ...nt Valve Feedback M WAV BR O R B Y R W BK Pump Y W M Dual Venturi W BR B IG Spark Electrode Flame Rod BR B BK FM Fan Motor R OW Y BK MGV Main Gas Valve W Y R BK Neutral W Hot BK Ground GY GY Power Cor...

Page 48: ...Venturi W BR B IG Spark Electrode Flame Rod BR B BK FM Fan Motor R OW Y BK MGV Main Gas Valve W Y R BK Neutral W Hot BK Ground GY GY Power Cord W Fuse 5A GY GY Ground Pump Y W Ground External Color Co...

Page 49: ...munication Interface Ready Link Interface Ready Link Fan Hall Sensor Outlet Thermistor 2 Inlet Thermistor 1 Inlet Thermistor 2 Outlet Thermistor 1 Exhaust Thermistor EXT_PUMP FRONT PANEL Communication...

Page 50: ...ace Ready Link Fan Hall Sensor Outlet Thermistor 2 Inlet Thermistor 1 Inlet Thermistor 2 Outlet Thermistor 1 Exhaust Thermistor EXT_PUMP FRONT PANEL Communication Interface Relay 3 Relay 2 Relay 4 Dri...

Page 51: ...Appendixes 51 5 5 Component Assembly Diagrams and Parts Lists 5 5 1 Case Assembly 12 7 13 8 9 10 18 2 1 3 4 6 5 17 16 15 14 11...

Page 52: ...6 Cover 30008678A 30011694A 7 Case Lower Bracket 20007643B 8 PCB 30011969A 9 Power Switch 30009482A 10 Front Panel 30008333A 11 Case Bracket 20007609A 12 Exhaust Pipe Assembly 30008673A 13 Rubber Ring...

Page 53: ...Appendixes 53 5 5 2 Burner Assembly NPE 180A 210A 240A 7 6 18 13 3 7 1 10 9 12 8 14 11 12 4 1 6 1 4 12 17 1 11 1 12 12 1 15 17 12 6 6 1 14 5 2 17 6 1 6 1 6 1 6 1...

Page 54: ...240A 6 1 O Ring 17 5x2 7t 20006947A 7 WPA A Clip 20018344A 7 1 Thermistor 30008366A 8 WPA B 20018343A 9 H Ex Middle Pipe 30009126A NPE 180A 30010803A 30008439A NPE 210A NPE 240A 10 Hot Water Outlet Pi...

Page 55: ...Appendixes 55 5 5 3 Burner Assembly NPE 180S 210S 240S 10 4 10 5 3 2 13 12 1 18 17 10 15 23 9 10 10 14 6 20 9 10 7 10 9 24 16 21 10 17 15 10 6 9 10 25 19 22 8 9 10 11...

Page 56: ...006947A 11 Cold Inlet Pipe 30011521A NPE 180S 30011665A NPE 210S 30011517A NPE 240S 12 Fan Damper 30008825A 13 Fan Packing 20022744A 14 Fan Bracket F 20022095A 15 Backup Ring 20018744B 16 High Limit S...

Page 57: ...4 8 4 9 3 7 1 12 1 12 2 12 3 12 4 12 5 11 6 9 11 17 3 3 3 4 4 3 11 4 5 2 4 Description Part Remark 1 Buffer Tank 30010953A 2 Hot Water Outlet Pipe Assembly 30008338A 2 1 Pipe Adapter 30008349A 2 2 O R...

Page 58: ...7x3 5t 20018013A 8 2 Syphon Clip 20018155A 8 3 Hose Clip 20007833A 8 4 Syphon Hose 20018429A 9 Pump Outlet Pipe Assembly 30008361A 9 1 Check Valve 30008360A 9 2 Pipe Clip 20017722A 9 3 O Ring P16 200...

Page 59: ...ppendixes 59 5 5 5 Waterway Assembly NPE 180S 210S 240S 10 15 2 12 6 6 13 8 14 11 10 11 8 9 11 8 12 11 17 16 8 6 7 6 5 4 3 2 1 6 10 15 2 12 6 6 13 8 14 11 10 11 8 9 11 8 12 11 17 16 8 6 7 6 5 4 3 2 1...

Page 60: ...Ring P15 20017217A 6 Fastner 20007859A 7 Flow Sensor 30011534A 8 O Ring P16 20017210A 9 Flow Sensor Outlet Adapter 20025959A 10 Outlet Adapter 20025961A 11 Fastner 20017726A 12 Water Adjustment Valve...

Page 61: ...Appendixes 61 5 5 6 Fan Gas Assembly 1 8 13 14 15 6 2 4 5 10 10 10 3 11 7 9 12...

Page 62: ...20018430A 4 Gas Valve 30008429A 5 Gas Inlet Adapter 30008382A 6 Fan Assembly 30008834A 7 Dual Venturi 30009219A 30008909A 8 Silence 20019142A 20023829A 9 Silence Adapter 20023861A 20019141A 10 O Ring...

Page 63: ...cleaning materials and rags Connecting the Gas Supply Yes No Does the gas supply match the type specified on the water heater s rating plate Is the gas line at least 1 2 or 3 4 ID Inner Diameter Is th...

Page 64: ...e collar to the to the vent termination Have you installed end caps on the exhaust and intake pipes Have you checked the venting for leaks Is the vent termination at least 12 300mm above the exterior...

Page 65: ...owner to secure the services of qualified licensed professionals for the installation of hard wired carbon monoxide detectors a In the event that the side wall horizontally vented gas fueled equipmen...

Page 66: ...Memo...

Page 67: ......

Page 68: ...service always contact Technical Support first Contact the technician or professional who installed your water heater Contact a licensed professional for the affected system for example a plumber or e...

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