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Installation and Operation Manual

TFTN 085-199

16.3.2.4 Pump Control Settings

Access the Pump Control Settings screen to set the overrun time of the boiler, system, and zone pump outputs, configure

AUX1

AUX2 PUMP

outputs, or to setup the variable speed pump control.

Note

: the overrun time for the DHW pump output is configured from the

DHW Setup

-> Advanced Settings screen.

Figure 16-11 Pump Control Settings Menu

Table 16-10 Pump Control Settings

Setting

Parameter

Range/Description

Factory Setting

Boiler Pump
Overrun (CH)

24.3.2

Sets the post circulation time for the boiler pump following a CH
demand. (Range = 0-255min)

1 min

System Pump
Overrun

24.4.5

Sets the post circulation time for the system pump following a
demand. (Rang = 0-255sec)

NOTE

: do not set System Pump Overrun time higher than the Zone

Outputs Overrun time.

0 sec

Zone Outputs
Overrun

7.2.8

Sets how long the zone outputs remain energized following the end of
the respective zone demand. (Range = 0-7200sec)

NOTE

: do not set Zone Outputs Overrun time lower than the System

Pump Overrun time.

0 sec

Zone Outputs
Overrun
During DHW

7.2.9

–

allows the Zone Outputs Overrun to occur during a concurrent

DHW demand.

Off

–

the Zone Outputs Overrun is aborted if a DHW demand occurs.

Off

(Continued

…

)

Содержание 87740

Страница 1: ...mbol Indicates a hazardous situation which if not avoided could result in minor or moderate injury Caution Sign without Safety Alert Symbol Indicates a hazardous situation which if not avoided could r...

Страница 2: ...MATERIAL 18 4 6 EXHAUST AND AIR INTAKE VENT SIZE LENGTH 19 4 7 DIRECT VENT INSTALLATION 19 4 8 POWER VENT INDOOR COMBUSTION AIR NON DIRECT VENT 25 4 9 GENERAL VENTING RULES AND GUIDELINES 25 5 0 VENT...

Страница 3: ...to light the burner by hand 4 Turn the manual gas valve to the OFF position Remove front access panel 5 Wait five 5 minutes to clear out any gas Then smell for gas including near the floor If you sme...

Страница 4: ...nal energy management system that serves the same function THIS OVERRIDE MUST NOT BE USED UNLESS AT LEAST ONE OF THE FOLLOWING CONDITIONS IS TRUE An external energy management system is installed that...

Страница 5: ...ilure to follow these instructions may result in serious injury or death 1 5 Boiler Vent Air Intake Piping The TFTN is certified as a Category IV boiler and requires a Special Venting System designed...

Страница 6: ...read in print size no less than one half 1 2 inch in size GAS VENT DIRECTLY BELOW KEEP CLEAR OF ALL OBSTRUCTIONS plate included with boiler 4 INSPECTION The state or local gas inspector of the side w...

Страница 7: ...ertified by AHRI Efficiency listed for models TFTN340 TFTN399 represents Thermal Efficiency AFUE is not applicable 3 TFTN units require a special venting system use only vent materials and methods det...

Страница 8: ...110 Connection Description Size Connection Description Size A Central Heating Supply 1 1 4 in C Gas Inlet 3 4 in B Central Heating Return 1 1 4 in D Condensate Drain Condensate trap is factory instal...

Страница 9: ...nnection Description Size Connection Description Size A Central Heating Supply 1 1 4 in C Gas Inlet 3 4 in B Central Heating Return 1 1 4 in D Condensate Drain Condensate trap is factory installed ins...

Страница 10: ...nection Description Size Connection Description Size A Central Heating Supply 1 1 4 in C Gas Inlet 3 4 in B Central Heating Return 1 1 4 in D Condensate Drain The condensate trap is shipped separately...

Страница 11: ...onnection Description Size Connection Description Size A Central Heating Supply 1 1 2 in C Gas Inlet 3 4 in B Central Heating Return 1 1 2 in D Condensate Drain The condensate trap is shipped separate...

Страница 12: ...ain and proximity to vent termination when determining the best boiler location Water or flood damaged components must be replaced immediately with new factory approved components as failure to do so...

Страница 13: ...Gas and Propane Installation Code CAN CSA B149 1 Canada or applicable provisions of the local building codes must be adhered to Closet Installations For closet installations it is necessary to provid...

Страница 14: ...re the bracket is level Use the Fischer plug anchors if a stud is not available With the help of an assistant hang the boiler on the upper wall mount bracket Align the openings in the back of the boil...

Страница 15: ...m 2 Visually inspect the venting system for proper size and horizontal pitch Verify that there is no blockage restriction leakage corrosion or other deficiencies which could cause an unsafe condition...

Страница 16: ...t be evacuated from the vent and air intake prior to start up Avoid using excess cement or primer that may lead to pooling inside the pipe assembly Freshly assembled piping assembly should be allowed...

Страница 17: ...connector using the applicable field supplied adapter see Table 4 2 Stainless Steel Piping TFTN340 399 exhaust and air intake connectors accept approved 4 in Stainless Steel special gas vent with a 4...

Страница 18: ...PVC CPVC ANSI ASTM F656 Notes 1 Refer to Tables 4 4 and 4 5 for Allowable Vent Size Length 2 PVC venting exhaust and air intake is not permitted within the Closet alcove of a Closet alcove installatio...

Страница 19: ...of fittings 4 7 Direct Vent Installation When installed as a Direct Vent boiler the combustion air intake must also be piped directly to the outdoors using the methods described in this section and in...

Страница 20: ...PS VK 4 2 g 4 4 c InnoFlue Flush Mount Wall 2 3 ISLPT0202 ISLPT0303 InnoFlue Polypropylene InnoFlue Concentric Wall 9 2 4 ICWT242 ICTC0224 ICWT352 ICTC0335 ICWTS462 ICTC0446 4 2 d 4 3 d InnoFlue Conce...

Страница 21: ...ntric Sidewall Location of exhaust and air intake connections vary between models see Figure 4 1 Location of exhaust and air intake connections vary between models see Figure 4 1 Exhaust Air Intake Ai...

Страница 22: ...exhaust and air intake connections vary between models see Figure 4 1 Exhaust Air Intake Air Intake Exhaust Location of exhaust and air intake connections vary between models see Figure 4 1 Exhaust Ai...

Страница 23: ...cluded with termination kit for complete installation instructions Min 12 above grade or snow level Exhaust Air inlet Exhaust Air inlet around perimeter Min 12 above grade or snow level Exhaust center...

Страница 24: ...above grade or snow level Vent Screen Vent pipe piece to retain vent screen Exhaust center Air inlet around perimeter Flashing Refer to documentation included with termination kit for complete instal...

Страница 25: ...hould be taken into consideration when selecting an adequate location A 36 diameter stainless plastic or vinyl shield can be used to flash the exterior of the residence 6 Flue Gas Hazard Position the...

Страница 26: ...intained 3 The pipe is supported every 24 Figure 4 7 Existing Chimney Chase Way It is permissible to use an existing chimney as a chase way to run the vent piping if 1 The chimney is not being used by...

Страница 27: ...sense must also be applied Figure 5 1 Vent Termination Clearances see Table 5 1 Table 5 1 Vent Termination Clearances see Figure 5 1 Canadian installations 1 US installation 2 A Clearance above grade...

Страница 28: ...d driveway located on public property Vents cannot be located above public walkways or other areas where condensate or vapor can cause a nuisance or hazard Vents cannot be located above public walkway...

Страница 29: ...istant material copper steel and galvanized are not acceptable materials for draining condensate Failure to abide by this caution will result in property damage The Condensate Trap Siphon must be peri...

Страница 30: ...8 from the edge of the outlet tube see Figure 6 2 Press the Corrugated Outlet Tube into the Siphon outlet connection and firmly hand tighten the Outlet Retaining Nut 3 Connect Siphon to Boiler ensure...

Страница 31: ...B149 1 installation codes and local codes for gas piping requirements and sizing Pipe size running to the unit depends on Length of pipe Number of fittings Type of gas Maximum input requirement of all...

Страница 32: ...pe sealing compound to the male end of all treaded connections before assembly Support boiler gas line connection during assembly of gas piping to prevent damage to internal boiler components Failure...

Страница 33: ...ectric 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 fir...

Страница 34: ...have confirmed this behavior reinstall the wire on the electrode reset the Lockout and reconfirm proper lighting The flame detection electrode is located in the burner plate it has a single black wire...

Страница 35: ...trations more than 175 ppm Failure to follow this warning may result in serious injury or death Throttle Screw Adjustment The gas valve Throttle Screw see Figures 9 2 and 9 3 is used to calibrate the...

Страница 36: ...Power 100 and compare the observed line pressure with Table 9 1 The pressure will be lowest during the maximum flow of gas 7 Adjust the gas line pressure to ensure the parameters in Table 9 1 are att...

Страница 37: ...er Power goes to 100 before proceeding with Max Power combustion calibration see Table 9 1 Note Use the Throttle Screw to adjust Max Power combustion see Figure 9 2 Note Verify gas line pressure to un...

Страница 38: ...tion calibration see Table 9 1 Note Use the Offset Screw to adjust Min Power combustion see Figure 9 2 Select Press to Stop Test upon completing the combustion calibration procedure Proceed to other m...

Страница 39: ...TFTN285 399 Gas Valve Adjustment TFTN340 399 Illustrated Line Pressure Test Port Gas Valve Remove access cover adjust from top Offset Screw used to set combustion at Min Power 10 Use 2 mm hex wrench...

Страница 40: ...m water Where possible treat boiler feed water Repair system leaks immediately to prevent oxygen air and untreated water from entering the system Proper equipment must be used to test the water Digita...

Страница 41: ...ting heating systems Follow the instructions provided by the inhibitor manufacturer when adding it to the system to ensure the correct concentration A list of approved inhibitors is provided below Rho...

Страница 42: ...pplied auto air vent directly above the outlet fitting on the top of the unit see Figure 10 1 Open the auto air vent s vent cap to promote the removal of air during commissioning of the boiler and to...

Страница 43: ...gure 10 1 b Near Boiler Piping TFTN285 Figure 10 1 c Near Boiler Piping TFTN340 399 Outlet Inlet Optional Inlet Optional Outlet Outlet Inlet Optional Inlet Optional Outlet Outlet Inlet Optional Inlet...

Страница 44: ...o turn on during DHW demands if DHW Mode 24 5 2 24 5 3 is configured as Downstream IWH 24 5 2 Tank Sensor or Aquastat and 24 5 3 CH Only When configured as DHW Recirc the output turns on when the DHW...

Страница 45: ...ion Tank The expansion tank must be sized in accordance with the water volume of the system as well as the firing rate of the appliance It is important to locate the expansion tank and make up water f...

Страница 46: ...Installation and Operation Manual TFTN 085 199 46 Figure 10 2 b TFTN285 Head Loss Curve Figure 10 2 c TFTN340 399 Head Loss Curve...

Страница 47: ...Astro 30 TFTN285 20 26 14 1 1 2 NRF 36 UPS26 99 0013 MS E8 25 21 9 8 1 1 2 NRF 36 UPS26 99 0013 MS E7 35 15 5 7 1 1 4 NRF 25 UPS26 99 0015 MS E7 TFTN340 20 32 7 9 2 NRF 36 UPS26 99 0012 MS E8 25 25 8...

Страница 48: ...DHW PUMP are each responsible for circulating water through the boiler so size accordingly see Table 10 3 3 If using a System Sensor set Sensor Configuration option Auxiliary Sensor 1 24 6 1 System Se...

Страница 49: ...OILER PUMP is responsible for circulating water through the boiler so size accordingly see Table 10 3 3 If using a System Sensor set Sensor Configuration option Auxiliary Sensor 1 24 6 1 System Sensor...

Страница 50: ...UMP is responsible for circulating water through the boiler so size accordingly see Table 10 3 3 If using a System Sensor set Sensor Configuration option Auxiliary Sensor 1 24 6 1 System Sensor 4 If a...

Страница 51: ...CH PUMP and DHW PUMP are each responsible for circulating water through the boiler so size accordingly see Table 10 3 3 If using a System Sensor set Sensor Configuration option Auxiliary Sensor 1 24...

Страница 52: ...e boiler so size accordingly see Table 10 3 3 If using a System Sensor set Sensor Configuration option Auxiliary Sensor 1 24 6 1 System Sensor 4 If the application uses a System Sensor set DHW Setup o...

Страница 53: ...iler so size accordingly see Table 10 3 3 If using a System Sensor set Sensor Configuration option Auxiliary Sensor 1 24 6 1 System Sensor 4 If the application uses a System Sensor set DHW Setup optio...

Страница 54: ...ion properly Failure to connect the system sensor and properly configure the AUX1 NTC input will result in Blocking Error 115 Common flow sensor error and the cascade will function using an average of...

Страница 55: ...Connect to AUX1 NTC at Manager boiler and set Sensor Configuration option Auxiliary Sensor 1 24 6 1 System Sensor 4 Downstream IWH connect the Tank Sensor or Aquastat and DHW Pump to the Manager boil...

Страница 56: ...r boiler and set Sensor Configuration option Auxiliary Sensor 1 24 6 1 System Sensor 4 Downstream IWH connect the Tank Sensor or Aquastat and DHW Pump to the Manager boiler and set Cascade Setup optio...

Страница 57: ...sor 1 24 6 1 System Sensor 4 Downstream IWH connect the Tank Sensor or Aquastat and DHW Zone Valve to the Manager boiler and set Cascade Setup option DHW Mode Cascade Downstream IWH Tank Sensor or Aqu...

Страница 58: ...r only the Manager boiler can be connected to WiFi see Figure 11 2 Connecting more than one WiFi module integrated inside the display will result in a BUS network communication error 2 Configure Zone...

Страница 59: ...ust be set as Manager while the others must be set uniquely as Follower Boiler 1 2 7 See Figure 11 3 Figure 11 3 Setting Boiler Address Select Setup from the home screen Select Tech Menu from the Setu...

Страница 60: ...Boilers if prompted Backup the New PCB Settings to the Display Memory if the PCB settings had previously been backed up to the display memory the display will prompt you to back up the new settings s...

Страница 61: ...DHW Mode Cascade Downstream IWH Tank Sensor or Aquastat on the Manager boiler NOTE If connecting an Upstream IWH to an individual boiler configure the DHW Mode accordingly from the display of the res...

Страница 62: ...ring Connections All field wiring connections to the boiler are made at barrier strips located on the TFTN control panel The connections are accessed by removing the front door of the boiler followed...

Страница 63: ...l Settings option Auxiliary Pump 2 Selection 24 7 1 None output does not function System Pump default powers during CH demands Will also power during Downstream IWH demands if DHW Setup Advanced Setti...

Страница 64: ...rameter 24 6 5 0 10V IN EXTERNAL MODULATION CONTROL 0 10V INPUT allows an external control to directly modulate the burner firing rate or adjust the active set point To activate this input set BMS Con...

Страница 65: ...nnected to the DHW IWH Buffer Tank input for optional buffer tank temperature sensor so that the boiler can directly control the temperature of an external buffer tank Sensor must be 10k beta 3977 NTC...

Страница 66: ...ONE INPUT to R 24V 2 NTI Room Sensors can be used in place of convential room thermostats Daisy chain B T of each sensor to BUS terminals B T at the boiler taking care to match polarity Each room sens...

Страница 67: ...ZONE INPUT to 120V 2 NTI Room Sensors can be used in place of convential room thermostats Daisy chain B T of each sensor to BUS terminals B T at the boiler taking care to match polarity Each room sens...

Страница 68: ...Installation and Operation Manual TFTN 085 199 68 13 0 WIRING SCHEMATICS Figure 13 1 Connection Diagram...

Страница 69: ...TFTN 085 199 Installation and Operation Manual 69 Figure 13 2 Ladder Logic Diagram...

Страница 70: ...explosion serious injury or death 1 Turn gas shut off valve to the ON position 2 Turn Power on to the boiler 3 Set Controller to the desired settings 4 Turn thermostat up Ignition will occur Operatio...

Страница 71: ...P Gas or in an industrial environment may require more frequent cleanings Crystalline Silica Carefully read the warnings and handling instructions pertaining to Refractory Ceramic Fibers before commen...

Страница 72: ...This boiler contains materials that have been identified as carcinogenic or possibly carcinogenic to humans Table 15 1 Handling Instructions for Refractory Ceramic Fibers RCF Reduce the Risk of Exposu...

Страница 73: ...a period of 8 minutes to help free air pockets that may exists in the heat exchanger and boiler piping The air purge sequence is only initiated following the first power up of the boiler or via the Te...

Страница 74: ...operating mode is not selectable from the display only via the web or mobile app Note the boiler will still perform the Anti freeze Function with Operating Mode set to Holiday Inlet water pressure Ou...

Страница 75: ...tup Wizard Continued Setup Wizard select to have the system walk you through a step by step setup procedure of the controller Tech Menu select to access all technical parameters User Menu select to ac...

Страница 76: ...prompted to input the type of radiation for the next zone step 5 A B After each CH zone is configured the wizard will prompt you to set the Tank Setpoint temperature default 125 F Adjust if desired th...

Страница 77: ...W Setup select to access DHW settings Cascade Setup select to access cascade settings or to set the Boiler Address Select to access Pump Control Settings BMS Control select to configure the boiler s r...

Страница 78: ...enus as illustrated in Figure 16 8 Tables 16 1 through 16 5 provide a description of each menu option Figure 16 8 CH Setup Menus Go to User Menu Takes you directly to the User Menu for the respective...

Страница 79: ...emperature automatically adjusts between the Min and Max Temperature Settings based on the input temperature provided by the included Outdoor Sensor or Internet Weather via WiFi connection Room Outdoo...

Страница 80: ...arm Weather Shutdown WWSD 4 1 0 When set to On disables the zone 1 heating demand when the outdoor temperature exceeds the WWSD Threshold for longer than the WWSD Switch Off Delay time Off WWSD Thresh...

Страница 81: ...i cycle Time Mode 24 21 3 Manual burner CH anti cycle time is set manually via setting CH Anti cycle Time Automatic the minimum amount of time burner must remain off between CH burner on cycles is set...

Страница 82: ...re sensor reading from an IWH that is located upstream boiler side of the hydraulic separator Aquastat Upstream IWH boiler is expecting an on off switch input from an IWH that is located upstream boil...

Страница 83: ...lternating until the end of the DHW request None DHW and CH can operate simultaneously indefinitely Only applicable for DHW Mode configured as Downstream IWH Upstream IWH configuration always function...

Страница 84: ...t to Unconfigured Default setting for replacement controllers Single Boiler for stand alone boilers that are not connected to other boilers via the communication BUS Manager Boiler for the managing bo...

Страница 85: ...n a fewer number of boilers operating at a higher power level In each scenario a new boiler is added switched on when the required power is greater than the sum of the active boilers operating at the...

Страница 86: ...24 3 2 Sets the post circulation time for the boiler pump following a CH demand Range 0 255min 1 min System Pump Overrun 24 4 5 Sets the post circulation time for the system pump following a demand Ra...

Страница 87: ...a variable speed boiler pump Range 5 45 F 25 F Maximum Pump Speed 24 3 0 Sets the maximum control signal to the boiler pump when using Boiler Pump Speed Control Signal to control the speed of a variab...

Страница 88: ...ets the minimum boiler temperature corresponding to an input signal equal to the Min Control Signal when Control Mode is configured to 0 10V Temp Range 68 F MaxTemperature 68 F Control Signal to Start...

Страница 89: ...settings to or restore the PCB settings from the display memory or an external memory USB Flash Drive connected to the USB port of the display See Figure 16 13 and Table 16 12 for details Figure 16 13...

Страница 90: ...nal Memory select to copy the settings from an external memory device USB Flash Drive to the PCB 16 3 2 7 Complete Menu The Complete Menu provides a direct access to all PCB parameters including some...

Страница 91: ...system supply temperature Buffer Tank select if connecting a buffer tank temperature sensor to AUX1 NTC for direct boiler control of the temperature of an external buffer tank Sensor must be 10k beta...

Страница 92: ...will be prompted to enter the passcode if it had not been entered within the last 30 minutes see Setup Wizard section Screen Settings Allows user to select the preferred language and units System uni...

Страница 93: ...y applicable when using an NTI Room Sensor Range 50 86 F 68 F Room Setpoint Reduced 4 0 1 Room temperature setpoint for CH zone 1 during Reduced time period Only applicable when using an NTI Room Sens...

Страница 94: ...at the Comfort setpoint if tank sensor is used or at aquastat setpoint if aquastat is used Always Active Operating Mode Scheduling NA See Operating Mode section Winter Table 16 14 c User Menu with Zo...

Страница 95: ...when Buffer Tank Function is set as Fixed Temperature Always Off disabled boiler ignores buffer tank demands Time Program buffer tank temperature setpoint toggles between the Comfort and Reduced setp...

Страница 96: ...error the Outlet temperature exceeds 185 F if the Burner Test screen is exited or after running for 30 minutes Output Test Allows for manual operation of each of the boiler s on off outputs Set Manua...

Страница 97: ...erial number of the boiler s WiFi gateway Serial number is required when registering the boiler on the NTI net connectivity platform NA Connectivity reset 19 2 0 Select if you need to reconfigure the...

Страница 98: ...Maintenance Warning will occur at a frequency set by Months to Next Maintenance Default Off Maintenance Warning Reset parameter 24 17 2 Press to reset the Months to Next Maintenance counter i e after...

Страница 99: ...ails and status of the DHW Demands IWH Tank Sensor or Aquastat Downstream or Upstream and Recirc Setpoint adjustable via DHW Setup and User Menu Temperature current temperature readings from DHW SWITC...

Страница 100: ...l Mode DHW tank temp Aquastat state downstream IWH Inlet water pressure of lead boiler Size of cascade sum of all boilers in cascade WiFi weather conditions Cascade power level Cascade status widget F...

Страница 101: ...fault description and device Boiler Manager Boiler Slave 1 2 7 the error occurred on Figure 16 23 Errors Menu Scroll only applicable when the number of active errors exceeds what will fit on one page...

Страница 102: ...owners and contractors Homeowners if you have logged into the app with a homeowner account you will first need to navigate to the Add product page to begin the connection process see Figure 17 1 Contr...

Страница 103: ...to connect the boiler to the internet When this popup appears the NTI net app will prompt you to Join Remote Gw Thermo see Figure 16 13 Upon confirming a WiFi network Figure 16 13 step 4 the display s...

Страница 104: ...ster it to your NTI net account select Register the product otherwise close the App and finish the setup at the boiler see Figure 17 3 Check the box next to I shared with the client the purposes and c...

Страница 105: ...h the error description press to clear the lockout see Figure 18 1 Alternatively errors requiring manual reset can by cleared from the Active Errors screen by selecting Press to reset active errors se...

Страница 106: ...to enable the burner Figure 18 3 Boiler Turned Off Via On Off Switch 5 No Power to Zone Outputs i Confirm that the jumper wire is connected between terminals ZONE INPUT and 120V or ZONE INPUT and R fo...

Страница 107: ...to follow this warning may result in component failure fire property damage serious injury or death Main PCB Fuses 120VAC the main PCB is equipped with two 2 6 3 Amp Slow blow fuses one each on the Li...

Страница 108: ...water pressure to a minimum of 12 psi Warning Faulty wiring ensure the wire harness is connected to the water pressure sensor Check for broken wires Faulty sensor replace pressure sensor 103 1 Flow c...

Страница 109: ...o air vent on the outlet pipe above the LWCO Auto Reset Blown 24V fuse If the power light is not on at the LWCO check the 2A blade fuse on the Low Voltage Connection PCB see Figure 18 4 Faulty wiring...

Страница 110: ...Sensor but a tank sensor is not being used Change DHW Mode setting to Aquastat Warning Tank sensor not connected Connect IWH tank sensor to DHW SWITCH NTC Faulty wiring check the wiring to the Tank s...

Страница 111: ...e problem persists replace the PCB 306 PCB internal error PCB internal error to reset switch the power to the boiler off on Power problem test for proper voltage and grounding Manual Reset Faulty PCB...

Страница 112: ...lope to boiler and possible restrictions or blockages Blocked condensate drain inspect condensate drain if the drain was clogged water may have entered the gas valve If the valve was wet it must be re...

Страница 113: ...n some applications the flame will occasionally lift during run due to excessive wind Warning Blocked venting ensure nothing is obstructing the venting Combustion settings or Gas pressure if the probl...

Страница 114: ...tem check the BUS wiring to each boiler Note BUS wiring is polarity sensitive Missing Manager configure one of the boilers in cascade as Manager see section 11 0 Cascade Installation Incorrect setting...

Страница 115: ...TFTN 085 199 Installation and Operation Manual 115...

Страница 116: ...llation and Operation Manual TFTN 085 199 116 Visit us online NTI Boilers Inc 30 Stonegate Dr Saint John NB E2H 0A4 Canada Technical Assistance 1 800 688 2575 Website www ntiboilers com Fax 1 506 432...

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