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Navien NPE-32AWE, Installation Manual

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WARNING

If the information in these instructions is not followed exactly, a fire or explosion may 
result, causing property damage or personal injury.

  –

Do not store or use petrol or other flammable vapours and liquids in the vicinity of this or 
any other appliance.

  –

WHAT TO DO IF YOU SMELL GAS

 

Do not try to light any appliances.

 

Do not touch any electrical switch; do not use any phone in your building.

 

Immediately call the National Gas Emergency Helpline on (Freephone) 0800 111999 or your gas 
supplier from a neighbour’s phone. Follow the instructions received.

  –

Installation and service must be performed by a Gas Safe registered installer, service agency 
or the gas supplier.

Model

NPE-24AWE
NPE-24SWE
NPE-32AWE
NPE-32SWE

Installation 
Manual

 

These appliances are for use with natural gas or LPG. 
(An LPG conversion kit is included with the water 
heater.)

 

Type: B23-B33-B53-C13-C33-C43-C53-C63-C83

Keep this manual near this water heater for future reference 
whenever maintenance or service is required.

Condensing Water Heater

Summary of Contents for NPE-32AWE

Page 1: ...y call the National Gas Emergency Helpline on Freephone 0800 111999 or your gas supplier from a neighbour s phone Follow the instructions received Installation and service must be performed by a Gas S...

Page 2: ...tem 28 3 7 Electrical Connections 35 3 8 Setting the DIP Switches 36 4 Installing a Cascading System 38 4 1 ConnectingWater Supplies 38 4 2 Connecting the Communication Cables 39 5 Installation Checkl...

Page 3: ...use landline phones From a neighbour 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...

Page 4: ...r with wet hands Doing so may result in electric shock WARNING This appliance can be used by children aged from 8 years and above and persons with reduced physical sensory or mental capabilities or la...

Page 5: ...t must be started up by an Official Technical Assistance Service authorized by Navien All Gas Safe registered engineers carry an ID card with their license number and a photograph You can check your e...

Page 6: ...ON In order to use this water heater safely read this instruction manual carefully and follow the installation instructions Failures and damage caused by erroneous work or work not as instructed in th...

Page 7: ...nstallation User s Information Manual Wall Mounting Bracket Tapping Screws Anchors Propane Gas Change Kit Spare Parts Pressure Relief Valve Condensate trap hose 2 2 Accessories The following optional...

Page 8: ...rking Flow l min 1 8 Max DHW Working Pressure bar 10 0 Adjustable DHW Temperature Range C 36 85 Dimensions Width x Depth x Height mm 440 x 336 x 695 440 x 336 x 695 440 x 336 x 695 440 x 336 x 695 Wei...

Page 9: ...105 4 106 7 Daily electrical consumption Qelec kWh 0 100 0 104 0 111 0 111 Annual electrical consumption AEC kWh 41 57 24 24 Daily fuel consumption Qfuel kWh 18 106 17 380 23 001 22 721 Annual fuel co...

Page 10: ...isplay Cascade operation b Hot Water Recirculation h Display Recirculation Mode c Diagnostics button i Up button For installers only Increases the temperature d Information button j Down button Shows...

Page 11: ...ormer Burner Primary Heat Exchanger Secondary Heat Exchanger Flow Sensor Condensate Trap Front Panel PCB Box Water Adjustment Valve Water Inlet Filter Condensate Drain Fitting Condensate Drain Lid Fan...

Page 12: ...nsor Condensate Trap Front Panel PCB Box Mixing Valve Water Inlet Filter Condensate Drain Fitting Condensate Drain Lid Fan Motor Dual Venturi Gas Pipe APS Air Pressure Sensor Gas Valve Freeze Protecti...

Page 13: ...tions Description Diameter A Flue Exhaust Air Intake 60 100 80 125 B Hot Water Outlet 22 mm C Recirculation Inlet 22 mm D Cold Water Inlet 22 mm E Gas Inlet 22 mm F Condensate Outlet 15 mm OverheadVie...

Page 14: ...ir Intake 60 100 80 125 B Hot Water Outlet 22 mm C Cold Water Inlet 22 mm D Gas Inlet 22 mm E Condensate Outlet 15 mm OverheadView 77 mm 170mm 115mm 10 mm 38mm 364mm 67 mm A BottomView 336 mm 60 mm 28...

Page 15: ...eration This condensate must be removed from the water heater and suitably treated if national legislation so requires The water heater should be located near a suitable drain and where damage from a...

Page 16: ...water heater and that hanging laundry or similar items do not obstruct access to the water heater or its flue system About Water Quality Proper maintenance of the water heater is required when water...

Page 17: ...he tongues on the mounting bracket and hang the water heater on the bracket When mounted with the mounting bracket the water heater will have a 20 mm clearance from the back of the wall WARNING The wa...

Page 18: ...lation Regulation However the following recommendations must be complied with at the least Before installing the gas pipes check the type of gas is compatible with the water heater Check that the gas...

Page 19: ...place away from direct sunlight It must also be thoroughly secured to prevent it from tipping over which could cause an explosion If the water heater is used with propane a gas regulator suitable for...

Page 20: ...nctions Check again to ensure that no cables or any other parts are in the way before you proceed 5 Loosen the screws indicated in the figure below and connect a manometer to the pressure port Reset t...

Page 21: ...tion about how to control this situation After installing the water heater clean the inlet water filter that is located inside the cold water inlet and then test the water heater for proper flow and i...

Page 22: ...ating feature set the timer on the optional Remote Controller to reduce energy consumption The recirculation feature of the AWE models has three performance advantages Elimination of any hot cold hot...

Page 23: ...mode 1 Connect the water supply to support recirculation Refer to the NPE 24AWE 32AWE water piping diagram 2 Set the 2 way valve inside the water heater to EXT 3 Set the front panel DIP switches at t...

Page 24: ...the water heater is turned off before connecting the wire to the PCB CAUTION An external pump cannot be used in an external recirculation mode application utilizing a by pass Valve Maximum Power Cons...

Page 25: ...ing see Recirculation Dipswitch Settings below 1 2 3 1 2 4 5 6 7 8 9 10 ON ON 9 Turn on the switch beside the front panel 10 Put the water heater cover back on and secure it with the C H G Condensate...

Page 26: ...ater Gas When installing the valve follow these guidelines Ensure that the discharge capacity of the pressure relief valve is equal to or greater than the maximum pressure rating of the water heater E...

Page 27: ...also be installed with as much tilt as possible The tubes must be insulated if they are exposed to extremely cold weather or blizzards If the tubes are not insulated they must have a diameter of at le...

Page 28: ...or obstructions near the duct If the outlet passes through a wall made of combustible material the end terminal must be covered with at least 20 mm of incombustible material and must maintain a dista...

Page 29: ...doors windows ventilation grilles 300 B Under a cornice 200 C Under a gutter or drainpipes 75 D Under a balcony or car port roof 200 E From vertical drainpipes 150 F From internal and external corners...

Page 30: ...y must have a 3 degree fall back to the appliance The fume extraction connection depends on the type of system chosen coaxial removal system or dual duct removal system Carefully follow the instructio...

Page 31: ...20 m A B 500 or 1 000 851 140 min Wall Extended Removal System 80 125 Max length A B 2x90 elbow 68 4 8 63 2 m 60 100 Max length A B 2x90 elbow 20 4 8 15 2 m B A 80 125 Max length A B 2x45 elbow 68 2 4...

Page 32: ...0 2 2 107 8 m C B A 3 6 3 2 Vertical Coaxial Removal Type C33 Standard Removal System 80 125 Max length A 70 m 60 100 Max length A 21 m A Extended Removal System 80 125 Max length A B 2x45 elbow 70 2...

Page 33: ...x2 2 101 2 m D E B A C F Pipe Diameter mm Maximum Length m Elbow Equivalent Length m 80 80 110 90 2 2 3 6 4 2 Vertical Dual Duct Removal Type C83 80 80 Max length A B C D 2x45 elbow 110 2x1 4 107 2 m...

Page 34: ...nstallation To choose the removal accessories required for each installation see the list of accessories on the NAVIEN price list Maximum Total Length Type Pipe Diameter mm Orientation Maximum Length...

Page 35: ...ore disconnecting them when you work on the controls Wiring errors can cause improper and dangerous operation Verify proper operation after servicing The water heater electrical connections must be ma...

Page 36: ...es on the circuit board configure the water heater s model settings These configurations are set atthe factory and should not be changed 3 8 2 Setting the Front Panel DIP Switches The two sets of DIP...

Page 37: ...when the set time period has been reached to indicate a flush or service is necessary O 1 n o i t a l u c r i c e R l a n r e t n I N 2 OFF 3 OFF O 1 n o i t a l u c r i c e R l a n r e t x E FF 2 ON...

Page 38: ...16 water heaters 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 Recircul...

Page 39: ...in 23 626 08 1 36 100A 4 in 24 653 29 1 42 100A 4 in 25 680 51 1 48 100A 4 in 26 707 72 1 54 100A 4 in 27 734 93 1 6 100A 4 in 28 762 15 1 66 100A 4 in 29 789 4 1 71 100A 4 in 30 816 61 1 77 100A 4 in...

Page 40: ...On the master water heater press and hold the Diagnostic and Up screens on the configured water heaters will return to the temperature display Note To add additional slaves at a later time repeat ste...

Page 41: ...eck the gas inlet pressure Check that the gas circuit is hermetically sealed Check the connection to the water supply Check if the water supply pressure is sufficient Check each fixture to ensure hot...

Page 42: ...eater You need to drain the water heater before performing maintenance tasks such as cleaning the inlet water filter or to prevent the water heater from freezing when it will not be used for an extend...

Page 43: ...access to the internal components remove the front cover by loosening the four Phillips head screws located at the top and bottom of the front cover assembly 6 Remove the recirculation inlet filter fr...

Page 44: ...pipe is attached to the fan motor assembly and gas valve Location B Remove 4 screws here Location A Remove 2 screws here NPE 24AWE SWE and NPE 32AWE SWE 7 Remove the screw connecting the fan motor ass...

Page 45: ...3 Reinsert and tighten the filters Cold Water Inlet Filter Recirculation Inlet Filter A model only 4 Refill the water heater Refer to 6 2 Draining the Water Heater on page 42 10 Remove the six bolts c...

Page 46: ...utine maintenance The water heater has a freeze protection function that requires electricity The freeze protection function will operate regardless of whether or not the connected Do not close the ga...

Page 47: ...ted appliance is checked as s e manufacturer s instructions supplied with the kit company which either in person or through a representative is engaged in and is responsible for the connection utiliza...

Page 48: ...and the Gas Valve near the left side of the unit which are highlighted in Figure 2 4 Use a Phillips screwdriver to remove the two screws at Location A the connection below the Gas Valve where it conne...

Page 49: ...measure the gas valve outlet pressure could result in damage to the valve causing potential severe personal injury or substantial property damage Navien water heaters are shipped ready to fire natura...

Page 50: ...n conversion is required be sure to set the Front Panel DIP switches according to the supply gas type Failure to properly set the DIP switches could cause carbon monoxide poisoning resulting in severe...

Page 51: ...stage MAX mode refer to 7 1 1Setting the Operation Mode Measure the CO2 value at high fire If the CO2 values do not match Table 2 at high fire do not adjust the gas valve Check for the proper Gas Ori...

Page 52: ...52 Appendixes 7 2 Technical Data Pressure Drop Curve NPE 24AWE 24SWE NPE 32AWE 32SWE...

Page 53: ...53 Appendixes Outlet Flow Data NPE 24AWE NPE 32AWE...

Page 54: ...54 Appendixes 1 1 38 0 34 1 30 3 26 5 22 7 19 0 15 4 11 4 7 6 3 8 15 6 32 2 48 9 65 6 NPE 24SWE 1 11 15 6 32 2 65 6 38 0 41 6 45 4 49 2 34 1 30 3 26 5 22 7 19 0 15 4 11 4 7 6 3 8 NPE 32SWE...

Page 55: ...D IGNITER Bk Bk Bk Bk Bk Bk Bk Bk Bk Bk 1 8 1 4 1 10 1 9 14 1 1 4 1 4 1 4 1 3 M WATER ADJUST VALVE Br O R B Y R W Bk M MIXING VALVE 1 8 M DUAL VENTURI B B STEP STEP ANTI FROST HEATER ANTI FROST SENSIG...

Page 56: ...l 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 PAN...

Page 57: ...eady 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 Rel...

Page 58: ...e v o C e k a t n I r i A 1 2 Air Intake Cover Seal 11 Case Bracket 3 Case 12 Coaxial Adapter 4 Air Pressure Sensor 13 Rubber Ring 5 Panel Bracket 14 Saddle NPE 24SWE 32SWE 6 Cover 15 Saddle Bracket 1...

Page 59: ...24AWE 10 Hot Water Outlet Pipe NPE 24AWE E W A 2 3 E P N E W A 2 3 E P N 2 Fan O Ring G50 11 WPA A Screw 3 Fan Bracket F 11 1 Thermistor 4 Flow Sensor Assembly 12 Fastner 5 Fan Bracket R 13 Ignition...

Page 60: ...r Exhaust 16 High Limit Switch 4 Heat Exchanger Assembly NPE 24SWE 17 Fastner NPE 32SWE 18 WPA A Clip 5 Ignitor 19 Thermistor Water 6 Packing 26 5x2 4t 20 WPA B 7 Heat Exchanger Outlet Pipe NPE 24SWE...

Page 61: ...stner 2 2 O RING P20 6 Water Adjustment Valve WAV 12 Cold Water Inlet Pipe Assembly 2 3 Thermistor Red 2 4 O RING P16 7 WAV Outlet Pipe Assembly 12 1 Water Filter 2 5 Pipe Clip 7 1 O Ring P16 12 2 O R...

Page 62: ...9 11 8 12 11 17 16 8 6 7 6 5 4 3 2 1 6 Description Model Description Model 1 Bracket 10 Outlet Adapter 2 Thermistor 11 Fastner 3 Water Filter 12 Water Adjustment Valve WAV 4 Cold Water Inlet Adapter 1...

Page 63: ...2 3 E P N E W S 2 3 E W A 2 3 E P N 2 Gas Pipe NPE 24AWE 24SWE 10 O Ring P20 NPE 32AWE 32SWE 11 O Ring G75 g n i k c a P n a F 2 1 r o t c e n n o C s a G 3 4 Gas Valve 13 Gas Orifice NPE 24AWE 24SWE...

Page 64: ......

Page 65: ...the appropriate Service Interval Record is completed Service Provider SERVICE RECORD SERVICE 01 AND AND SERVICE 02 AND AND SERVICE 03 AND AND SERVICE 04 AND AND SERVICE 05 AND AND SERVICE 06 AND AND S...

Page 66: ...Memo...

Page 67: ......

Page 68: ...ice you have several options for getting service www navien co uk Contact the technician or professional who installed your water heater Contact a Gas Safe Registered engineer information at hand Mode...

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