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22        Installing the Boiler

2.2    Mounting the Boiler to the Wall

Navien NCB LSWE boilers come with an upper mounting bracket 

that is pre-drilled at 400 mm on center for easy installation on 

standard wall studs. If the strength of the wall is insufficient or if 

the framing is non-standard or uneven, reinforce the area before 

installing the boiler. Avoid installation on common walls as the 

unit will make some operational noises while it is running.

To mount the boiler to the wall:

1.  Affix the bracket securely to the wall and ensure that it is 

level and that it can support the weight of the boiler.

2.  Align the grooves on the back of the boiler with the tongues 

on the mounting bracket and hang the boiler on the 

bracket.
When mounted with the mounting bracket, the boiler will 

have a 16 mm clearance from the back of the wall.

WARNING

 

The boiler is heavy.

 Always lift the unit with assistance. 

Be careful not to drop the boiler while lifting or handling 

it to avoid bodily injury or damage to the unit.

 

Do not

 rest the boiler on the bottom end after removing 

it from the shipping carton. Doing so may result in 

excessive pressure on protruding pipes and resulting in 

product damage. If you must put the boiler down, lay it 

on its back or put it inside the protective shipping base.

DANGER

 

The boiler must be mounted on a suitable wall that can 

support its weight and prevent explosion or fire.

 

Do not install the boiler near paper or other flammable 

objects.

 

Do not install the boiler near domestic waste.

Summary of Contents for TIPTON II 52 INCH

Page 1: ...vice always contact an official Technical Assistance Service TAS first Contact the technician or professional who installed your boiler Contact a licensed professional for the affected system for example a plumber or electrician When contacting an officialTechnical Assistance Service TAS please have the following information available Model number Serial number Date purchased Installation location...

Page 2: ...Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHATTO DO IFYOU 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 dep...

Page 3: ... 1 Flue Terminal Positions 30 5 2 Selecting a Vent System 31 5 3 Coaxial Systems 32 5 4 Dual Duct Systems 33 5 5 Measuring Vent Length 35 5 6 Terminating the Vent 35 6 Setting the DIP Switches 36 6 1 PCB DIP Switches 36 6 2 Front Panel DIP Switches 36 7 Connecting Electrical Supplies 37 7 1 Accessing the Terminal Strips 37 7 2 Connecting Cables 38 7 3 Connecting the Power Supply 38 7 4 Connecting ...

Page 4: ...hbor s phone call your gas provider and follow their instructions If you cannot reach your gas provider call the fire department Do not return to your home until authorized by your gas supplier or the fire department Do not use or store flammable products such as gasoline solvents or adhesives in the same room or area as the boiler The boiler has a main burner flame that can turn on at any time an...

Page 5: ... as a clothes line that could obstruct the air flow in or out of the boiler This boiler has been approved for use in the USA and Canada only Using the boiler in any other country will void the manufacturer s warranty WARNING Do not store or use gasoline or other flammable liquids near this boiler Doing so may result in fire or explosion Do not place combustibles such as newspapers or laundry near ...

Page 6: ...Temperature Time in which a young child can suffer a full thickness 3rd degree burn 70 C Less than 1 second 60 C 1 second 55 C 10 seconds 49 C 10 minutes 37 C very low scald risk DANGER HOT BURN To prevent burns Use the lowest operating temperature setting necessary to provide comfortably hot water If your household has children or elderly or disabled residents consider using a lower temperature s...

Page 7: ...chimneys UNE EN 13384 Chimneys UNE EN 13779 Ventilation UNE EN ISO 16484 Building control systems UNE EN 14336 Heating systems in buildings UNE EN 15502 1 Gas fired heating boilers Part 1 General Requirements and tests UNE EN 15502 2 1 Gas fired heating boilers Part 2 1 Specific standard for type C appliances and type B2 B3 and B5 appliances of a nominal heat input not exceeding 1000kW UNE EN 1320...

Page 8: ...uded items out of the reach of children as they can be dangerous When you no longer wish to use the boiler disable any parts that could be potentially hazardous Installation Operation Manual User s Information Manual Wall mounting bracket Tapping screws snchors Spare Parts Propane gas changing kit Condensate drainage pipe Electric cord 1 2 Accessories The following optional accessories are availab...

Page 9: ...return temperature 108 6 108 4 108 4 108 3 Heat Loss through the case with burner switched on 0 1 0 1 0 1 0 1 Heat Loss through the chimney with burner switched on 1 6 1 8 1 5 1 9 Seasonal efficiency rate SEDBUK rating A NOx class 5 Category II2H3P Type Heating and instantaneous hot water production Heating output adjustment Adjustable over entire Max Min output range Type of heating installation ...

Page 10: ...quivalent elbow length at 90 Ø60 100 m 1 3 Equivalent elbow length at 45 Ø60 100 m 1 Max horizontal coaxial length Ø80 125 m 68 Max vertical coaxial length Ø80 125 m 70 Equivalent elbow length at 90 Ø80 125 m 2 2 Equivalent elbow length at 45 Ø80 125 m 1 Equivalent length of adapter Ø60 100 Ø80 125 m 0 5 Max dual duct length Ø80 Ø80 m 110 Equivalent elbow length at 90 Ø80 m 2 2 Equivalent elbow le...

Page 11: ...diagram shows the key components of the boiler Component assembly diagrams and particular parts lists are included in the Appendixes Fan Motor Front Panel Flue Duct Ignitor Flame Rod Circulation Pump Condensate Trap Mounting Frame PCB NCB 24 28 34LSWE ...

Page 12: ...ri Mixing Chamber Air Pipe Primary Heat Exchanger Secondary Heat Exchanger Return Adapter Filter Assembly 3 way Valve Space Heating Return Pressure Relief Valve Air Vent Space Heating Supply DHW Inlet DHW Outlet APS Hot Water Heat Exchanger Gas Valve ...

Page 13: ...14 About the Boiler NCB 40LSWE Fan Motor Front Panel Flue Duct Ignitor Flame Rod Circulation Pump Condensate Trap Mounting Frame PCB ...

Page 14: ...turi Mixing Chamber Primary Heat Exchanger Secondary Heat Exchanger Return Adapter Filter Assembly 3 way Valve Space Heating Return Pressure Relief Valve Air Vent Space Heating Supply DHW Inlet DHW Outlet APS Hot Water Heat Exchanger Gas Valve ...

Page 15: ...nections Description Diameter A Flue exhaust Air intake Ø60 100 Ø80 125 B Space heating supply 22 mm C Hot water outlet DHW 15 mm D Gas supply inlet 22 mm E Cold water inlet DHW 15 mm F Space heating return 22 mm OverheadView 128mm 160 mm 170 mm 200mm A Supply Connections B C D 150 mm 75mm 75mm E F 135mm NCB 24LSWE 28LSWE 350mm NCB 34LSWE 40LSWE 380mm 380 mm ...

Page 16: ...perating Modes 1 6 1 Operating in Space Heating Mode To operate the Space heating mode press the Space heating button on the front panel and select a heating temperature setpoint higher than current heating temperature 1 When the boiler detects a request for heating production from the installation s room thermostat for example the 3 way valve goes to heating position and the circulating pump star...

Page 17: ...ot water 2 The electronic control modulates the burner output in order to constantly produce hot water at the temperature required 3 When there is no further DHW demand the burner switches off and the 3 way valve remains in DHW mode position during a wait time 5 minutes by default so that it can work more efficiently and provide more flexibility if the taps are continuously turned on and off 4 Whe...

Page 18: ...WE boiler in its final location A detailed description is given of the procedure in the sequenced sections below Wall mounting Gas connection Electrical connections DIP switch settings Final check Water and condensate pipe connection Flue gases exhaustion system installation if necessary Gas changeover if necessary Boiler operation p 20 p 23 p 27 p 37 p 36 p 40 p 41 p 30 p 51 ...

Page 19: ... on page 24 Adequate Drainage The boiler produces a significant amount of condensate during operation This condensate must be removed from the boiler and sutably treated if national legislation so requires The boiler should be located near a suitable drain and where damage from a possible leak will be minimal Installing the boiler in a location without a drain will void the warranty and Navien wil...

Page 20: ...boiler in areas where gasoline or other flammables are used or stored Ensure that combustible materials are stored away from the boiler and that hanging laundry or similar items do not obstruct access to the boiler or its venting Adequate installation clearances CAUTION Do not install the boiler on carpeting Install the boiler in an area that allows for service and maintenance access to utility co...

Page 21: ... the tongues on the mounting bracket and hang the boiler on the bracket When mounted with the mounting bracket the boiler will have a 16 mm clearance from the back of the wall WARNING The boiler is heavy Always lift the unit with assistance Be careful not to drop the boiler while lifting or handling it to avoid bodily injury or damage to the unit Do not rest the boiler on the bottom end after remo...

Page 22: ...ctions and cause leaks Any dirt in the tubes could reduce boiler efficiency and cause it to malfuction Any pipes exposed to the elements or which could freeze in winter must be insulated with suitable insulating material CAUTION Failure to follow the instructions provided in this section will void the warranty and may result in property damage fire serious injury or death 3 1 Installing a Space He...

Page 23: ...when disposing of condensate from the boiler We recommend draining the condensate into a laundry tub as the alkali in laundry detergent will neutralize the acid in the condensate However other suitable waste drain locations may be used according to the local legislation CAUTION Do not cap or plug the integrated condensate line If prevented from draining condensate can damage the boiler The condens...

Page 24: ...he 13 mmfitting at the bottom of the boiler Use only corrosion resistant material for the drain line such as PVC or CPVC Do not reduce the size of this fitting or the drain line to less than 13 mm 2 Place the free end of the drain line into an appropriate drain 3 If you are using a condensate pump ensure that the pump allows for up to 3 78 LPH of drainage for each boiler in the system 4 If you are...

Page 25: ...that the boiler is full of water before firing the burner Operating the unit without filling it will damage the boiler Such damage is not covered by the warranty and may result in property damage severe personal injury or death Perform a fill test after installing the boiler s water system to make sure that the system has been installed properly Follow the instructions below to perform a fill test...

Page 26: ... following recommendations must be complied with at the least Before installing the gas pipes check the type of gas is compatible with the boiler Check that the gas meter in the home can measure the rate of gas supply required The gas pipe diameter is not determined by the boiler connection It should be calculated in accordance with its length and consequently its pressure drop The pipes must be d...

Page 27: ...ol shaded placeawayfromdirectsunlight Itmustalsobethoroughly secured to prevent it from tipping over which could cause an explosion If the boiler is used with propane a gas regulator suitable for this type of gas must be installed The connection and installation must be made in accordance with the applicable regulations and standards at the time of installation Note The output pressure of the pres...

Page 28: ...firing rate check the inlet gas pressure reading on the manometer The gas pressure must fall within the ranges specified on page 10 3 Leave the faucet on until the boiler shuts down due to a lack of gas supply and then turn off the hot water faucet 4 Remove the front cover by loosening the 2 Phillips head screws securing it to the case CAUTION Ensure that no cables are in the way before folding do...

Page 29: ...om any part of the removal circuit Switch off the boiler and wait for the pipes to cool down before cleaning the gas removal and air intake ducts The gas removal and air intake ducts must be protected from snow accumulation The installation of the flue exhaust and combustion air intake system must be calculated and made by sufficiently qualified and authorised staff On designing and mounting the i...

Page 30: ...ing a Vent System WARNING The gas removal ducts must not be in contact with or near flammable materials and they must not pass through any structures or walls of buildings made of such materials If you replace the boiler the old gas removal system must be replaced by a new one The fume extraction connection depends on the type of system chosen coaxial removal system or dual duct removal system Car...

Page 31: ... A B 500 or 1 000 851 140 min Wall Extended Removal System Ø80 125 Max length A B 1x90 elbow 68 2 2 65 8 m Ø60 100 Max length A B 1x90 elbow 20 1 3 18 7 m B A Ø80 125 Max length A B 1x45 elbow 68 1 67 m Ø60 100 Max length A B 1x45 elbow 20 1 19 m B A Pipe Diameter mm Maximum Length m Elbow Equivalent Length m Ø60 100 20 45 1 0 90 1 3 Ø80 125 68 45 1 0 90 2 2 ...

Page 32: ...oval System Ø80 125 Max length A B 1x45 elbow 70 1 69 m Ø60 100 Max length A B 1x45 elbow 21 1 20 m A B Minimum 350 mm Pipe Diameter mm Maximum Length m Elbow Equivalent Length m Ø60 100 21 45 1 0 Ø80 125 70 5 4 Dual Duct Systems 5 4 1 Horizontal Dual Duct Removal Type C53 Standard Removal System Ø80 80 Max length A B C 1x90 elbow 110 2 2 107 8 m C B A ...

Page 33: ...elbow 110 2x1 4 107 2 m D C A B Minimum 370 mm Pipe Diameter mm Maximum Length m Elbow Equivalent Length m Ø80 80 110 45 1 4 Extended Removal System Ø80 80 Max length A B C D E F 4x90 elbow 110 4x2 2 101 2 m D E B A C F Pipe Diameter mm Maximum Length m Elbow Equivalent Length m Ø80 80 110 90 2 2 ...

Page 34: ...oval terminal The total length of the tubes must not exceed the maximum value defined If the removal installation includes elbows while calculating the total length you must take into account that each elbow has a resistance equal to a specific linear Leq equivalent length see table There are two different tyes of terminals horizontal and vertical for both the coaxial removal system and the dual d...

Page 35: ...ion 1 OFF 2 OFF 24 28 34 LSWE DHW MAX 1 ON 2 OFF 40LSWE DHW 2 stage MAX 24 28 34 LSWE MIN 1 OFF 2 ON 40LSWE 1 stage MIN 24 28 34 LSWE Heating MAX 1 ON 2 ON 40LSWE Heating 2 stage MAX 3 4 Capacity 24LSWE 3 OFF 4 OFF 28LSWE 3 ON 4 OFF 34LSWE 3 OFF 4 ON 40LSWE 3 ON 4 ON 5 Burner Type Bekaert 5 ON Alantum 5 OFF 6 7 Country Europe 6 OFF 7 OFF 6 2 Front Panel DIP Switches Dip Switch Set of 8 The DIP SW ...

Page 36: ...ical safety regulations applicable at the time of installation Note The NCB LSWE boiler has an electrical protection degree of IPX5D The electrical connection must be made via a bipolar switch located on the same premises as the boiler The switch must have a minimum pole separation of 3 mm 7 1 Accessing theTerminal Strips To access the PCB where the terminal strips are located carefully follow the...

Page 37: ...he lid A together with the seal B 4 Insert all these elements in the cable gland and press on the lid A until the cable is sufficiently fixed in place and the unit is sealed 7 3 Connecting the Power Supply To correctly establish the boiler s electrical connection follow the indications given in the figure and the indications on the identification label for the terminal strip connections The boiler...

Page 38: ...interface This enables our modulating range of OpenTherm room controls to be connected without any further modifications NCB LSWE OpenTherm Protocol Room Controller 1 2 3 4 5 6 7 4 Connecting the RoomThermostat The boiler is designed to be connected to a room thermostat The thermostat cables are to be connected to terminals 1 and 2 of the boiler terminal strip removing the electrical bridge origin...

Page 39: ... is changed on gas type changeover check the gas inlet pressure Check the gas circuit is hermetically sealed Check the control panel is working correctly Check it functions normally when the boiler is switched on Check the heating system water pressure is correct Check the heating temperature indicated is correct Check the DHW temperature indicated is correct Check the reset operation is performed...

Page 40: ... temperature read To prevent burns on page 7 carefully Water above 52 C can cause instant scalding severe burns or death To adjust the water temperature 1 Make sure that all hot water faucets are closed and ensure that the internal circulator and any external circulating pumps are off 9 1 Turning the Boiler On or Off To turn the boiler on or off press the Power button When the power is on the wate...

Page 41: ...door air temperature C with optional Outdoor Temperature Sensor only 2 Press the DHW button The DHW temperature will flash 3 Press Up or Down buttons until the desired temperature appears on the display You can adjust the temperature while the display is flashing If no buttons are pressed for 5 seconds or if the ECO button is pressed the current temperature setting will be stored automatically Not...

Page 42: ...ns to switch between the Operation mode types 5 To exit the Operation Mode setting and return the boiler to normal operation press the Reset button 9 5 Setting the Parameters You can modify parameter settings for boiler operations such as the space heating and DHW temperature ranges in different operating conditions Follow the instructions below to enter the Special Parameter mode and change param...

Page 43: ...CO button and enter your 4 digit password Use the or buttons to increase or decrease numbers and the Summer Winter button to move between digits 5 When you are finished press the ECO button 6 Press the or buttons to move to a parameter setting and then press the ECO button to enter the Parameter Edit mode 7 Press the or buttons to change the parameter value 8 When you are finished press the ECO bu...

Page 44: ...fault 2 Fan Coil 60 82 C 46 5 63 5 C 3 Cast Iron Baseboard 37 5 76 5 C 30 59 C 4 Low Mass Radiant 26 5 60 C 21 46 5 C 5 High Mass Radiant 26 5 48 5 C 21 38 C 6 Radiators 48 5 76 5 C 38 59 C 7 Custom Supply Control Absolute MIN MAX set point Return Control Absolute MIN MAX set point User defined Heat loads 1 6 show the preset temperature ranges based on the load type selected while heat load 7 prov...

Page 45: ...s then stops for 1 minute Default 10 C Range 6 10 C Setting the Boost IntervalTime Display Description Boost interval time min The boost interval time may be set to prevent interruption in space heating while using the Outdoor Reset Control mode due to changes in heat load conditions With the boost interval time enabled the boiler increases the space heating supply temperature by 5 C and the retur...

Page 46: ...Time Display Description Anti fast cycling time min The anti fast cycling time is the duration that the boiler stops its space heating operation when the space heating supply or return temperatures reach the set values for boiler operation stop temperatures The boiler will not resume space heating until the duration elapses even when the space heating supply or return temperatures return to within...

Page 47: ...arks MIN set point 20 C 90 C Default 90 C Setting the DHW WaitTime Display Description DHW wait time min The DHW wait time is the duration that the boiler maintains the DHW supply mode after a DHW demand With the DHW wait time enabled a faster DHW supply may be available when there is a subsequent DHW demand The boiler switches the 3 way valve to space heating mode when the set time elapses Defaul...

Page 48: ...is menu may be used to set the burning acceleration time Default 3 min Range 0 20 min Setting the Supply Absolute MINTemperature Display Description Supply absolute Min set point C This menu can be used to change the minimum supply temperature range in Supply Control mode When Custom mode is configured in Outdoor Reset Control mode changes to the supply temperature are based on the supply absolute...

Page 49: ...ler If an error message appears reset the boiler to resolve the problem To reset the boiler press the Reset button If resetting the boiler does not solve the problem refer to the Troubleshooting section of this manual or contact Technical Assistance Service Setting the LCD Back Light This menu may be used to set the status of LCD back light Default ON Display Description LCD back light maintains m...

Page 50: ... responsible for the connection utilization repair or servicing of gas 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 Tools Required Phillips Screwdriver Flathead Screwdriver 5 32 in or 4 mm Allen Wrench Combustion Analyzer or Dual Port Manometer Gas Leak ...

Page 51: ...y 8 With the internal components exposed locate the gas inlet pipe and the gas valve in the middle of the unit as shown in Figure 2 1 and Figure 2 2 Gas Valve Gas Inlet Pipe Figure 2 1 NCB 24 28 34LSWE Internal Components Gas Valve Gas Inlet Pipe Figure 2 2 NCB 40LSWE Internal Components ...

Page 52: ... here Location A Loosen the hex nut here Figure 3 2 Detaching Gas Inlet Pipe from Gas Valve and Fan Motor Assembly NCB 40LSWE Once the Gas Orifice is exposed remove the two screws that hold the part in place Remove the Gas Orifice from its housing and prepare the new Gas Orifice for the LP conversion for installation Remove two 2 screws here Figure 4 1 Access to Gas Orifice in Fan Assembly NCB 24 ...

Page 53: ... 5 1 Inspect the O ring between the venturi and gas valve inlet adapter whenever they are disassembled The O ring must be in good condition and must be installed Failure to comply will cause a gas leak resulting in severe personal injury or death Replace the old Orifice piece with the new part for use with LP gas Ensure that the Orifice is properly seated inside the port before proceeding to the n...

Page 54: ...pply gas type Failure to properly set the DIP switches could cause carbon monoxide poisoning resulting in severe personal injury or death 14 Turn on the gas and water supply to the boiler 15 Measure and adjust the gas air ratio Option 1 Using Combustion Analyzer recommended a Loosen the screw rotate the plate and remove the gasket to access the emissions monitoring port as shown in Figure 8 b Inse...

Page 55: ...t match Table 2 at high fire do not adjust the gas valve Check for the proper Gas Orifice DANGER Improper gas valve settings can cause severe personal injury death or substantial property damage Option 2 Using Digital Manometer a Open the offset pressure port by loosening the screw two turns as shown in Figure 10 Digital pressure manometer Figure 10 Connect Digital Pressure Monometer b Connect a m...

Page 56: ...rnal components c Fully open a hot water fixture and set the boiler to operate at 1 stage MIN mode refer to table 2 Measure the offset value at low fire and compare it to the values in Table 3 If the offset value is out of range the gas valve set screw will need to be adjusted If adjustment is necessary locate the set screw as shown in Figure 11 Using a 5 32 in or 4mm Allen wrench turn the set scr...

Page 57: ...llips screwdriver to remove the two screws four screws for NCB 40LSWE where gas inlet pipe is attached to the fan motor assembly Loosen the hex nut located above the gas vlave and remove the gas pipe Remove 2 screws here Loosen the hex nut here NCB 24 28 34LSWE Remove 2 screws here Loosen the hex nut here NCB 40LSWE 8 Remove the screw connecting the fan motor assembly and the mixing chamber and th...

Page 58: ...he boiler are safe from water Navien recommends to use a hose If the water pressure of the hose is too high water may splash to other electric parts of the boiler Keep the water pressure of the hose as low as it can If the boiler is installed in high area and you cannot see the inside of the heat exchanger use a solid support and be careful not to fall 13 As cleaning the heat exchanger is finished...

Page 59: ...60 Appendixes 10 3 Wiring Diagram 0 9 ...

Page 60: ...Appendixes 61 10 4 Ladder Diagram ...

Page 61: ... temperature Best location to install the temperature sensor is on a North or Northeast side of a structure under eaves where the sensor is shielded from direct sunlight Avoid placing sensor in close proximity of heat sources that may affect correct temperature sensing fans exhausts vents lights Avoid installing the sensor in areas where the sensor is subjected to excessive moisture Use 18 gauge w...

Page 62: ... o c c a n i d e l l a t s n i n e e b s a h n i a r d e t a s n e d n o c e h T ALL INSTALLATIONS O C g n i w o l l o f e h t d r o c e r r e r u t c a f u n a m e h t y b d e r i u q e r f I 2 OR CO ppm OR CO CO2 Ratio s e Y s n o i t a l u g e R g n i d l i u B e t a i r p o r p p a e h t h t i w s e i l p m o c m e t s y s r e t a w t o h d n a g n i t a e h e h T s e Y s n o i t c u r t s n i...

Page 63: ...ERVICE 7 Date Energy Efficiency Checklist completed Yes No Engineer Name Company Name Telephone Number Gas Safe Register Number Comments Signature SERVICE 9 Date Energy Efficiency Checklist completed Yes No Engineer Name Company Name Telephone Number Gas Safe Register Number Comments Signature SERVICE 2 Date Energy Efficiency Checklist completed Yes No Engineer Name Company Name Telephone Number G...

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