NTI TRX150 Manual Download Page 22

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Part 1 - General Safety Information

Part 4 - Water Piping

A. CH Supply 1-1/4”

B. DHW Outlet 3/4"

C. Gas Inlet 3/4"

D. DHW Inlet 3/4"

E. CH Return 1-1/4”

Condensate discharge

A. CH Supply 1-1/4”

B. Supply to Indirect Water Heater 3/4" (Cap if not in use)

C. Gas Inlet 3/4"

D. N/A

E. CH Return 1-1/4”

Condensate Discharge

TRX199C

TRX150 and TRX199

Figure 9 - Water / Gas Connections

Summary of Contents for TRX150

Page 1: ...cause property damage severe personal injury or death California Proposition 65 Warning This product contains chemicals known to the State of California to cause cancer birth defects or other reprodu...

Page 2: ...trical 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...

Page 3: ...ng and other performance criteria when undergoing tests specified in ANSI Z21 13 latest edition Installation should be made in accordance with the regulations of the Authority Having Jurisdiction loca...

Page 4: ...r systems with total input of 300 000 BTU hr or greater See statement below for an important notice on the use of the override IMPORTANT In accordance with Section 325 f 3 of the Energy Policy and Con...

Page 5: ...CH Circulators 48 2 Low Voltage Wiring Connections 48 3 Room Thermostat Wiring Connections 49 4 Outdoor Sensor Connections 49 5 Aquastat Default and Tank Sensor Optional Connections non Combi Models...

Page 6: ...a fully functional and calibrated combustion analyzer Failure to follow these instructions will result in property damage severe personal injury or death WARNING WARNING DANGER NOTE If the boiler is e...

Page 7: ...rors can cause improper or dangerous operation Failure to do so could result in electrical shock improper boiler or system operation property damage serious personal injury or death Due to the low wat...

Page 8: ...gaskets and seals in water systems are poisonous if consumed and can cause personal injury or death Consider piping and installation when determining boiler location Damages resulting from incorrect...

Page 9: ...ions On TRX150 TRX199 Models ONLY If the boiler is to be used only in Heating Mode not connected to an indirect water heater the electrical connection of the 3 way valve motor MUST BE DISCONNECTED whi...

Page 10: ...ATESTHE USE OF A CALIBRATED CO2 O2 AND CO COMBUSTION ANALYZER WARNING Gas Gas 14a 15a 14f 14e 14h 15g 14b 14c 14d 14g 15b 15c 15d 15e 15f ACCESSORIES BOX BOITE ACCESSOIRES For Qualified Technician Ins...

Page 11: ...Mode Allows manual operation of pumps to commission system and check pump operation Internal By Pass Valve Protects the boiler from damage in low flow conditions Internal ECM Pump The internal ECM Pum...

Page 12: ...his manual Avoid continuously high levels of humidity Never close existing ventilation openings Ensure a minimum 1 clearance around hot water and exhaust vent pipes NOTE To prevent condensing in the f...

Page 13: ...m clearance must be provided from the appliance front cover to the removable panel or combustible door Minimum Clearances from Combustible Materials Hot water pipes at least 1 from combustible materia...

Page 14: ...er bracket drilling holes 4 Drill and plug the wall and secure the lower mounting bracket using field provided screws Then adjust the lower mounting bracket on the boiler Ensure the boiler is installe...

Page 15: ...this manual When installing a combustion air intake from outdoors care must be taken to utilize uncontaminated combustion air To prevent combustion air contamination see Table 7 This boiler requires f...

Page 16: ...if there is blockage leakage corrosion or other deficiencies that could cause an unsafe condition 3 If practical close all building doors windows and doors between the space in which the boiler remai...

Page 17: ...Approved Exhaust Vent Materials3 PVC CPVC PP Stainless Steel Shipping Weight lbs 115 125 130 Gas Supply Pressure NG 3 5 to 10 5 WC LP 8 to 13 WC Power Supply 120V 60 Hz less than 12A General Operatin...

Page 18: ...ral Heating Supply 1 1 4 NPT A Central Heating Supply 1 1 4 NPT B Supply to Indirect Water Heater 3 4 NPT B Domestic Hot Water Outlet 3 4 NPT C Gas Inlet 3 4 NPT C Gas Inlet 3 4 NPT D N A D Domestic H...

Page 19: ...7 Flame detection electrode 8 Silencer 9 Junction box 10 DHW Heat Exchanger Combi Models Only 11 Condensate trap 12 Gas valve 13 Control panel TRX Components 15 Circulation Pump 16 DHW Flow Sensor Co...

Page 20: ...Models Only 11 Condensate trap 12 Gas valve 15 Circulation Pump 16 DHW Flow Sensor Combi Models Only 17 Water pressure switch 18 Modulating Fan 19 Boiler inlet temperature sensor 21 Ignition electrode...

Page 21: ...ansion tanks must be sized according to total system volume This includes all length of pipe all fixtures boilers etc Failure to properly size for system expansion could result in wasted time money po...

Page 22: ...et 3 4 C Gas Inlet 3 4 D DHW Inlet 3 4 E CH Return 1 1 4 F Condensate discharge A CH Supply 1 1 4 B Supply to Indirect Water Heater 3 4 Cap if not in use C Gas Inlet 3 4 D N A E CH Return 1 1 4 F Cond...

Page 23: ...irculation Pump To calculate the size of the heating installation refer to the graph below Table 11 Internal Circulation Head Curve Graph Representing the Available Circulation Pump Head 0 5 10 15 20...

Page 24: ...event possibility of severe burns or property damage should the relief valve discharge Discharge line must be as short as possible and the same size as the valve discharge connection throughout its en...

Page 25: ...afactoryinstalledWaterPressureSwitch Inthe event water pressure drops below 7 PSI the control will go to a blocking error FILL 108 inhibiting burner operation However a low water cut off may be requir...

Page 26: ...thermostat is wired to its corresponding zone valve Contacts in the zone valves provide a signal to the boiler to operate when there is a call for heat 10 Unit is equipped with built in primary pump T...

Page 27: ...the return side of the boiler as illustrated The piping will not support the weight of the circulators Refer to the circulator manufacturer s instructions to properly support the circulator Failure to...

Page 28: ...the zone valves provide a signal to the boiler to operate when there is a call for heat 10 Unit is equipped with built in primary pump This pump is sized to ensure proper flow rate through the boiler...

Page 29: ...TANT Minimum flow rates outlined in this manual 2 gpm must be maintained through the heat exchanger to minimize short cycling 8 In a valve based system each heating zone has a zone valve which opens w...

Page 30: ...p for the heating loop This pump is sized to ensure proper flow rate through the boiler heat exchanger and related piping 8 For direct not primary secondary piping applications it is required to insta...

Page 31: ...ive 6 Install a minimum of 12 diameters of straight pipe upstream of all circulators 7 VERY IMPORTANT Minimum flow rates outlined in this manual 2 gpm must be maintained through the heat exchanger to...

Page 32: ...of days to 18 Example 1 Parameter 2 7 5 131 F increasing phase from 77 F to 131 F 6 days stays at 131 F for 6 days decreasing phase from 131 F to 77 F 6 days Example 2 Parameter 2 7 5 140 F increasin...

Page 33: ...esponsibility to understand the hazards associated with explosive solvents and take the necessary precautions to avoid these risks Improper seating of vent pipe gaskets can cause eventual gasket failu...

Page 34: ...about the applicability of the proposed venting material Failure to follow these directions will result in substantial property damage severe personal injury or death DANGER DANGER B Approved Materia...

Page 35: ...ppliance Direct Vent 1 foot 3 feet 91 cm Power Vent 4 ft below or to side of opening 1 ft above opening K Clearance to mechanical air supply inlet 3 feet above if within 10 feet horizontally 6 feet 1...

Page 36: ...otal length of the exhaust vent pipe run must not be less than six 6 feet 4 The total length of the exhaust vent pipe run must not exceed one hundred 100 feet in 2 pipe or one hundred fifty 150 feet i...

Page 37: ...t location or b In the absence of specific ordinances snow levels shall be calculated from the average monthly maximum depth of snow accumulation as indicated by the National Weather Service s 10 year...

Page 38: ...Polypropylene No Yes Z DENS Concentric Roof 2 3 2ZDVK2 DZDVK3 Not Shown Yes No NOTES 1 Instructions included with termination kits contain detailed assembly and installation instructions 2 Clearance...

Page 39: ...ngths routing and termination methods must all comply with the methods and limits given in the Venting section of this manual When installing a combustion air intake from outdoors care must be taken t...

Page 40: ...ing only The installer is responsible for all equipment and detailing required by local codes Sidewall Venting Options Direct Vent Installation Two Pipe Termination Low Profile Termination Concentric...

Page 41: ...ow Keep Free of Obstructions GasVent Directly Below Keep Free of Obstructions 4 in min Refer to documentation included with termination kit for complete installation instructions Refer to documentatio...

Page 42: ...ackets Figure 31 Venting Below Grade For installations that exit the wall below grade 1 Excavate the site to a point where the pipes are to exit as shown in Figure 31 2 Ensure the wall is fully sealed...

Page 43: ...haust must terminate a minimum of 18 above the air intake termination See Figure 37 for more details 3 Polypro Innoflue Concentric Termination illustrated See Figure 40 for more details 3 IPEX Concent...

Page 44: ...rates two options for exhaust termination only Neither vent pipe illustrated is intended for combustion air intake Refer to documentation included with termination kit for complete installation instru...

Page 45: ...the system All instructions listed in this Venting section apply See Figures 41 1 and 41 2 for venting demonstrations Chase Venting Through an Existing System When venting as a chase follow all instr...

Page 46: ...directly from the outdoors into the boiler intake connection Unconfined space is space with volume greater than 50 cubic feet per 1 000 Btu hour 4 8 cubic meters per kW of the total input rating of al...

Page 47: ...om freezing temperatures or any type of blockage In installations that may encounter sustained freezing conditions the use of heat tape is recommended to avoid freezing of the condensate line Longer c...

Page 48: ...nection Electrical power must only be turned on when the boiler is completely filled with cold water Failure to follow these instructions could result in component or product failure serious injury or...

Page 49: ...OTE WHEN CONNECTING THE BOILER TO EXTERNAL CONTROLS DO NOT RUN 120V CABLES AND CABLES FOR CONTROL CIRCUITS WHICH ARE LOWVOLTAGE TOGETHER USE SEPARATE CABLESTO PREVENT INDUCED VOLTAGE ON THE LOW VOLTAG...

Page 50: ...120V N G L 120 V AC GATEWAY WIFI Bk Bl Bl Rd Wh Bl Bl Rd Rd Br Br Bl Gry Bl Bk Bk Bk Rd Rd Wh Br Br Br Bk Bk Br Wh Br Bl Br Detection electrode EBUS 2 TT2 TT1 System sensor Tank sensor Outdoor sensor...

Page 51: ...5 Vdc for SAFETY MCU H B RETURN 5 Vdc A NEUTRAL filtered FAN CIRCUIT SMPS Nf HOT filterd Hf Safety Ground NEUTRAL FLAME CIRCUIT Hf Hf 3 WAY VALVE RELAYS CIRCUIT SENSORS CIRCUIT HMI B Nf Nf C D Nf A G...

Page 52: ...AS VALVE 5 120 VRAC NO 6 120 VRAC NO CN8 POWER SUPPLY OUT 1 120 VAC LINE HT 120V AC 2 120 VAC NEUTRAL CN4 PROTECTIVE EARTH 1 CN7 PROTECTIVE EARTH 1 CN9 PROTECTIVE EARTH 1 CN26 NTC HEAT RETURN 1 5V SEL...

Page 53: ...SIGNAL EBUS2 11 EBUS2 SIGNAL SELV 24V 12 GROUND CN16 FAN MANAGEMENT 1 GROUND SELV 24V 2 PWM FAN DRIVER 3 HALL_EFFECT SENSOR 4 24V CN19 EXTERNAL CLIP IN 1 24V SELV 24V 5V 2 GROUND 3 CLIP IN SERIAL TX...

Page 54: ...ding to the COMBINED total maximum BTUH draw for the appliances as if they were operating at the same time 3 Measure the length of the gas supply line from the gas meter to the boiler The boiler must...

Page 55: ...Screw Figure 54 Excess Flow Valve EFV Figure 55 Remove Yellow Cap When performing a pressure test on the gas line pipng be sure the boiler is disconnected or isolated if the test pressure is expected...

Page 56: ...of a lockout error After pressing the Reset button to clear an error condition the button will flash for five 5 seconds Display Icon Description Digits Indicating Boiler Status Temperature oF with ba...

Page 57: ...the central heating CH temperature setpoint fromthehomescreenbypressingtheCH buttons SeeFigure59 The allowable operating range is limited by the Max and Min Temperature Settings e g Parameters 4 2 5 a...

Page 58: ...Menu Figure 61 Access user menu Press button for setting hours Press button for setting the minutes Press OK to confirm the entered data Activate change by pressing the OK button buttons scroll throu...

Page 59: ...to the Wifi application the Internet time is automatically taken into account Manual entry Day 1 31 Months 1 12 Year 2019 Time 00 00 item 2 Figure 57 for the hour setting item 8 Figure 57 for setting...

Page 60: ...tlet Temperature Automatic Temperature Control AUTO OFF 1 Basic Temp Control without Optional Room Sensor or Outdoor Sensor 2 Indoor Temp Reset With Optional Room Sensor 3 Outdoor Temp Reset With Incl...

Page 61: ...t The boiler target temperature automatically adjusts between the Min and Max Temperature Settings 4 2 6 and 4 2 5 based on the input temperature provided by the included Outdoor Sensor or Internet We...

Page 62: ...ing system The function boosts the boiler target temperature by increasing the Slope 10 every 10 minutes a call for heat is continuously active to a maximum of 2X the nominal Slope setting 4 2 2 While...

Page 63: ...r When this function is activated the boiler automatically switches from winter mode to summer mode based on outdoor temperature conditions This means that the appliance can independently activate or...

Page 64: ...TECHNICIANS MAY ONLY BE ACCESSED AFTER ENTERING THE ACCESS CODE To access the Menus open the cover and proceed as follows in this example Parameter 2 3 1 1 Simultaneously press the OK and ESC buttons...

Page 65: ...parameters 8 Service Parameters 0 Boiler Statistics 1 1 Boiler Statistics 2 2 Boiler 3 Boiler Temperature 4 Storage 5 Service 6 Error History 7 Free parameters 8 Reset Factory Settings 9 Other 1 10 Ot...

Page 66: ...ERS 2 0 GENERAL 2 0 0 DHW Setpoint Temperature TRX COMBI 97 140 F 125 Also settable via the home screen see item 2 Figure 57 not applicable when 2 2 8 2 DHW Setpoint Temperature TRX non COMBI 104 149...

Page 67: ...2 Boiler TRX Non Combi models set to 2 Always On This is not changeable TRX Combi models set to 0 Deactivated COMFORT function is not active TRX Combi models set to 1 or 2 On activates conditionally o...

Page 68: ...TORY SETTINGS 2 8 0 Automatically resets all parameters to the factory defaults WARNING Always check PCB settings if restoring factory default settings on a replacement controller Replacement controll...

Page 69: ...6 F 68 4 1 2 S W delay time 0 300 minutes 60 4 2 ZONE 1 SETTINGS 4 2 0 Temperature Range 0 68 122 F low temperature 1 86 179 F high temperature 1 4 2 1 Type of Temperature Control 0 Fixed Outlet Tempe...

Page 70: ...icable when using an optional NTI Room Sensor and when 4 2 1 2 or 4 4 2 5 MAXIMUM Temperature Setting 86 179 F 179 if Parameter 4 2 0 1 68 122 F 120 if Parameter 4 2 0 0 4 2 5 sets the allowable boile...

Page 71: ...UM temperature setting 86 179 F 120 if parameter 5 2 0 1 68 122 F 80 if parameter 5 2 0 0 5 2 6 sets the allowable boiler operating temperature range for Zone 2 heating limiting Automatic Temperature...

Page 72: ...ure Control and manual adjustments from the User Menu 6 3 DIAGNOSTICS 6 3 0 S W function activation 0 OFF 1 ON 0 Only applicable when using an NTI room sensor 6 3 1 S W temperature threshold 50 86 F 6...

Page 73: ...1 Enable Maintenance advice 0 OFF 1 ON 0 8 5 2 Maintenance Warning Reset Reset OK Yes Esc No Resets Maintenance Advice and clears the Warning 8 5 4 SW Version Display Interface 8 5 5 SW Version Main C...

Page 74: ...r meter to monitor water makeup Freeze protection fluid may leak before the water begins to leak causing concentration to drop reducing the freeze protection level 4 Glycol in hydronic applications sh...

Page 75: ...egisters on the pressure gauge F Check Thermostat Circuit s 1 Disconnect the two external wires connected to the boiler thermostat terminals TT1 TT2 low voltage terminal strip 2 Connect a voltmeter ac...

Page 76: ...un is used it may be necessary to create a vent in the horizontal run to prevent a vacuum lock in the condensate line 4 Do not expose the condensate to freezing temperatures 5 It is very important you...

Page 77: ...ting the igniter After the boiler displays Error 501 set the room thermostat to the normal setting to start the boiler 8 Open the gas valve and check the connection seals including the boiler connecti...

Page 78: ...are it with the values given in the table below Natural Gas LP Gas Fan Speed Low High Low High CO PPM 175 175 CO2 8 5 9 7 9 5 10 7 The CO2 at minimum gas flow rate Low Fan Speed must be set lower than...

Page 79: ...ng counter clockwise to reduce the CO2 level clockwise to increase the CO2 level Wait 1 minute after each adjustment for the CO2 value to stabilize WARNING Minimum Gas Flow Adjustment is very sensitiv...

Page 80: ...shall be installed by a qualified service agency in accordance with the manufacturer s instructions and all applicable codes and requirements of the authority having jurisdiction If the information i...

Page 81: ...iping properly supported Has vent piping been checked for leaks Has the exhaust vent line been pitched back to the boiler at a rate of 1 4 per foot Have the exhaust vent and intake pipes been properly...

Page 82: ...en started If necessary has the boiler gas valve been adjusted Has the installation been customized per installation location requirements Have all customized system parameters been tested Has proper...

Page 83: ...to operation after the error condition goes away The button must be pressed on the control panel to restore boiler operation Iftheerrorconditionoccursoftencontactaqualifiedservicetechnician 3 Malfunct...

Page 84: ...again 1 Check the water pressure on the pressure gauge 2 Purge the air from the central heating circuit 3 Check for the correct functioning and positioning of the supply and return temperature probes...

Page 85: ...main PCB 3 04 Too many 5 resets in 15 minutes Switch the boiler OFF and ON at the main electrical power supply Blocking Auto Reset 1 1 Turn Off the Power to the Boiler 3 05 PCB internal error Switch...

Page 86: ...essure is between 3 5 and 10 5 WC Natural Gas or between 8 and 13 WC for boilers converted to Propane LP operation 2 Check gas valve wire Ensure connection is secure 3 Check flame detection sensor Ens...

Page 87: ...r short circuit This Error Code will go away when the condition is remedied 1 Check exhaust temperature sensor Ensure connections are dry and secure 2 If flue is very cold 14 F 10 C remove sensor and...

Page 88: ...avoiding any possibility of scalding from hot water 2 Shut power off to the boiler To avoid scalding wait for boiler to cool before operating the relief valve 3 Lift the relief valve lever If water fl...

Page 89: ...he main water inlet valve 2 Open all the hot and cold water taps 3 Drain the water from the lowest points of the system Before Starting Maintenance 1 Ensure the power and gas remain off 2 Close the va...

Page 90: ...ers can be converted to cristobalite in very high temperature applications The International Agency for Research on Cancer IARC has concluded Crystalline silica inhaled in the form of quartz or cristo...

Page 91: ...clean any of the boiler components The components could be damaged resulting in unreliable or unsafe boiler operation substantial property damage severe personal injury or death Figure 85 Remove the...

Page 92: ...densate can exit from the tee resulting in potential water damage to property D Replacing Components At any point in time over the boiler s service life it may be necessary to replace boiler component...

Page 93: ...onents 5 Reinstall the fan and combustion assembly components as described in Cleaning the Heat Exchanger Combustion Chamber Ensure the gasket 6 is assembled between the fan and air inlet channel Fail...

Page 94: ...CH circuit is filled and purged with a pressure of 12 psi Ensure the DHW circuit is filled and purged 1 Power the boiler on 2 If necessary purge air again from the CH and DHW circuits 3 Check the boil...

Page 95: ...e personal injury or death Such product failures ARE NOT covered under warranty The combustion chamber insulation in this product contains ceramic fiber material Ceramic fibers can be converted to cri...

Page 96: ...de Clean Set gap at 1 8 CONDENSATE Condensate Trap Clean debris from the condensate trap Fill with clean water Neutralizer Check condensate neutralizer Replace if necessary Condensate hose Disconnect...

Page 97: ...d correct the problem If a technician is not available press a button on the display to wake it Then press the RESET button to remove the lockout state so additional trials for ignition can be perform...

Page 98: ...98 Maintenance Notes...

Page 99: ...ion Address Product Name Serial Number s Comments Installer s Code Name Installers Phone Number Signed by Installer Signed by Customer Installation Notes IMPORTANT Customer Please only sign after the...

Page 100: ...NTI Boilers Inc 30 Stonegate Drive Saint John NB E2H 0A4 Canada Technical Assistance 1 800 688 2575 Website www ntiboilers com Fax 1 506 432 1135 Visit us online 86661 Revision Date 2 25 21...

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