NTI Trinity Lx 150 Installation And Operation Instructions Manual
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NTI Trinity Lx 150 Installation And Operation Instructions Manual

Trinity lx series boilers and water heaters
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Trinity Lx
Model Numbers: Lx150-800
Version Date: 2011-03-11
INSTALLATION AND OPERATION INSTRUCTIONS FOR
TRINITY LX SERIES BOILERS AND WATER HEATERS
This manual to be read in conjunction with the following documents which
provide specific instructions for controller setup, plumbing and wiring:
Appendix A - Controller and Touchscreen Display Instructions
Appendix B - Boiler Applications: Plumbing and Wiring
Appendix C - Water Heater Applications: Plumbing and Wiring

TABLE OF CONTENTS

1.0
INTRODUCTION ................................................................................................................ 3
2.0
SPECIFICATIONS .............................................................................................................. 6
3.0
APPLIANCE LOCATION................................................................................................... 8
4.0
GENERAL VENTING....................................................................................................... 13
5.0
VENT AND AIR-INTAKE TERMINATION CLEARANCES ........................................ 28
6.0
CONDENSATE DRAIN .................................................................................................... 33
7.0
INSTALLING GAS PIPING.............................................................................................. 34
8.0
LIGHTING THE APPLIANCE ......................................................................................... 36
9.0
GAS VALVE AND BURNER SET-UP ............................................................................ 38
10.0 WIRING SCHEMATICS ................................................................................................... 45
11.0 INSTALLATION CHECKLIST ........................................................................................ 49
12.0 ANNUAL MAINTENANCE AND INSPECTION ........................................................... 51
13.0 PARTS LIST ...................................................................................................................... 53
14.0 TROUBLESHOOTING ..................................................................................................... 65
HAZARD SYMBOLS AND DEFINITIONS
unit may result in property damage, serious injury to occupants, or possibly death.
BONUS
Night Time Setback
(Time of Day)
Lx800 Only
Danger Sign: Indicates a hazardous situation which, if not avoided, will
result in serious injury or death.
Warning Sign: Indicates a hazardous situation which, if not avoided,
could result in serious injury or death.
Caution Sign plus Safety Alert Symbol: 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 result in property damage.
Notice Sign: Indicates a hazardous situation which, if not avoided,
could result in property damage.
This Appliance must be installed by a licensed and trained Heating
Technician or the Warranty is Void. Failure to properly install this
NEW FEATURES
Second Central Heat Input
Internal Lead-Lag Control
System Sensor
Modulation Sensor Alternatives
Warm Weather Shutdown
Lx800
®

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  • Page 1: Table Of Contents

    BONUS Night Time Setback Trinity Lx NEW FEATURES (Time of Day) Second Central Heat Input Lx800 Only Internal Lead-Lag Control System Sensor Model Numbers: Lx150-800 Modulation Sensor Alternatives Version Date: 2011-03-11 Warm Weather Shutdown INSTALLATION AND OPERATION INSTRUCTIONS FOR TRINITY LX SERIES BOILERS AND WATER HEATERS This manual to be read in conjunction with the following documents which provide specific instructions for controller setup, plumbing and wiring: Appendix A - Controller and Touchscreen Display Instructions...
  • Page 2 │Installation and Operation Instructions Trinity Lx Lx Series Read Before Proceeding If you do not follow these instructions exactly, a fire or explosion may result causing property damage, serious injury or death. FOR YOUR SAFETY, READ BEFORE OPERATING_ A) This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner.

  • Page 3: Introduction

    Do not convert the Lx600, Lx700 or Lx800 to Propane (LP). Operate with Natural Gas only. General Installation Requirements The installation of your NTI Trinity Lx gas appliance must conform to the requirements of this manual, your local authority, and the National Fuel Gas Code ANSI Z223.1 and or CAN/CGA B149 Installation Codes.
  • Page 4 LP Conversion Kit must be installed to convert the appliance so it will operate safely with LP Propane. The Lx600, Lx700 and Lx800 operate with Natural Gas only; DO NOT convert these models to Propane. Listed below are the NTI applicable models and their corresponding Natural to LP Propane Conversion Kit number.
  • Page 5 │ Trinity Lx Lx Series Installation and Operation Instructions IN THE STATE OF MASSACHUSETTS ONLY (a) For all horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned and operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisfied: 1.

  • Page 6: Specifications

    │Installation and Operation Instructions Trinity Lx Lx Series 2.0 SPECIFICATIONS Table 2-1 Specifications Lx150-300 DESCRIPTION Lx150 Lx150E Lx200 Lx300 CSA Input Modulation 30,000-150,000 30,000-150,000 40,000-199,000 55,000-275,000 btu/hr [kw] [8.8-44.0] [8.8-44.0] [11.7-58.3] [16.1-80.5] 1, 3 136,000 139,000 182,000 251,000 DOE Heating Capacity [39.8] [40.7] [53.3]...
  • Page 7 │ Trinity Lx Lx Series Installation and Operation Instructions High Altitude Operation The Trinity is designed to operate at its maximum listed capacity in installations less than or equal to 2000 ft [610 m] above Sea Level. Since the density of air decreases as elevation increases, maximum specified capacity should be de-rated for elevations above 2000 ft [610 m] in accordance with Table 2-3.

  • Page 8: Appliance Location

    │Installation and Operation Instructions Trinity Lx Lx Series 3.0 APPLIANCE LOCATION In all cases, the Trinity Lx must be installed indoors in a dry location where the ambient temperature must be maintained above freezing and below 100°F [38°C]. Gas components must be protected from dripping, spraying water, or rain during operation and servicing.
  • Page 9 │ Trinity Lx Lx Series Installation and Operation Instructions Figure 3-1(a) Lx150-200 Models Closet Installation, Minimum Clearances Piping must be CPVC Top 12” [305 mm] 1” [25 mm] clearance for hot water and vent pipes 6” [152 mm] max. above vent opening Ventilation Air Opening Ventilation Air Openings 1 in...
  • Page 10 │Installation and Operation Instructions Trinity Lx Lx Series Figure 3-1(c) Lx500-800 Models Closet Installation, Minimum Clearances Model Lx800 Ventilation Air Openings - Openings are not required if shown the appliance area meets the Recommended Clearances in Table 3-1. Top 12” [305 mm] 6”...
  • Page 11 │ Trinity Lx Lx Series Installation and Operation Instructions Figure 3-2(a) Lx150-200 Models Wall Mounting Installations Failure to follow instructions may Remove the upper wall mount bracket from the result in fire, serious injury, or death. back of the appliance. Secure the upper wall mount bracket to a solid This unit requires two people to lift it or damage and injury may result.
  • Page 12 │Installation and Operation Instructions Trinity Lx Lx Series Figure 3-2(b) Lx300-400 Models Wall Mounting Installations Failure to follow instructions may While leaving the upper bracket intact (A), result in fire, serious injury, or death. remove the wall mount bracket attached to the bottom-back of the appliance (B).

  • Page 13: General Venting

    │ Trinity Lx Lx Series Installation and Operation Instructions 4.0 GENERAL VENTING The Trinity Lx is a “Direct Vent” appliance requiring a “Special Venting System” designed for pressurized venting. Both the Vent and Air-Intake piping must be piped to the outdoors, using the vent material and rules outlined in this section.
  • Page 14 │Installation and Operation Instructions Trinity Lx Lx Series Figure 4-1(a) Lx150-200 Model Figure 4-1(b) Lx150-200 Model Near Appliance Venting (CPVC) Near Appliance Venting (PVC) Swing Joint Swing Joint to attain slope in to attain slope in horizontal runs horizontal runs Air Inlet Air Inlet 3”...
  • Page 15 │ Trinity Lx Lx Series Installation and Operation Instructions Figure 4-3(a) Lx500-600 Near Appliance Venting (CPVC/PVC) Swing Joint to attain slope in horizontal runs Air-Inlet 4” Pipe * Exhaust Vent 4” CPVC Exhaust Vent Air-Inlet Adapter 4” PVC (check 4” stainless steel local codes and Table 4-3) (factory supplied...
  • Page 16 │Installation and Operation Instructions Trinity Lx Lx Series Exhaust venting must be supported to reduce strain on piping joints. Failure to follow these instructions may result in result in damage, serious injury or death. In Canada, the first 3 ft (915 mm) of vent piping must be readily accessible for inspection. Table 4-2 Mandatory Vent Pipe Transition Piece CPVC Vent CPVC Transition Vent...
  • Page 17 Vent is the standard air intake method; however, Lx500-800 models have the option to draw combustion air directly from the room using the NTI Indoor Combustion Air Kit (part number 84093). See Table 4-5 through 4- 7 for a list of Kits and Figures 4-5 to 4-15 for application illustrations.
  • Page 18 │Installation and Operation Instructions Trinity Lx Lx Series Optional Vent Termination Kits - Kits certified with NTI appliances are listed in Table 4-5 and available from IPEX and/or NTI. For more information on System 636 Concentric Vent Kits or wholesaler locations contact │...
  • Page 19 │ Trinity Lx Lx Series Installation and Operation Instructions Concentric Venting Options Figure 4-5(a) All Models (Lx200 shown) Figure 4-5(b) All Models (Lx200 shown) Concentric Side Wall Termination (Optional Kit) Concentric Roof Termination (Optional Kit) Two-Pipe Venting Options Figure 4-6(a) Lx150-200 Figure 4-6(b) All Models Two-Pipe Side Wall Termination Two-Pipe Roof Termination...
  • Page 20 │Installation and Operation Instructions Trinity Lx Lx Series Figure 4-7(a) Lx300-400 Figure 4-7(b) Lx300-400 Two-Pipe Side Wall Termination Two-Pipe Side Wall Termination (Optional Kit) Figure 4-8(a) Lx500-800 Figure 4-8(b) Lx500-800 Two-Pipe Side Wall Termination Two-Pipe Side Wall Termination (Optional Kit)
  • Page 21 │ Trinity Lx Lx Series Installation and Operation Instructions Indoor Combustion Air Options Figure 4-9(a) Lx500-800 Only Figure 4-9(b) Lx500-800 Only Side Wall Vent / Indoor Combustion Air (Optional Kit) Roof Vent / Indoor Combustion Air (Optional Kit)
  • Page 22 │Installation and Operation Instructions Trinity Lx Lx Series Indoor Combustion Air Requirements (Lx500-800 Only) Drawing combustion air from the room can result in competition for combustion air with other fuel burning appliances, ventilation air systems or exhaust sources. See Table 4-8 for a list of design considerations and installation guidelines.
  • Page 23 │ Trinity Lx Lx Series Installation and Operation Instructions Labeling and Identification – Roof Terminations Figure 4-10 All Models Figure 4-11 All Models Concentric Vent Roof Top Termination Two-Pipe Roof Top Termination To prevent water leakage, install adequate roof Two-pipe terminations typically penetrate the roof weather seal flashing (not included) around roof surface.
  • Page 24 │Installation and Operation Instructions Trinity Lx Lx Series Figure 4-14 All Models Figure 4-15 Lx300-800 Only Low Profile Wall Termination (Optional Kit) Side Wall Termination (Optional Kit) Gas Vent Directly Below Gas Vent Directly Below Keep Free of Obstructions Keep Free of Obstructions Vent Terminal Warning Plate Warning Plate...
  • Page 25 │ Trinity Lx Lx Series Installation and Operation Instructions Figure 4-17 Lx150-800 Low Profile Termination Kit Air-Inlet Low Profile Termination Kit Piping The vent /air-inlet pipes are field supplied. Vent screens are build in. Major components provided in Low Profile Kit include: base, cap, s.s.
  • Page 26 Combustion air containing chemicals such as chloride, fluoride, bromine or iodine or dust and debris will cause corrosion damage of the heat exchanger voiding your NTI warranty. Refer to Table 4-1 for a list of corrosive products and contaminants sources to avoid.
  • Page 27 Mounting shown, to provide rigidity. Bracket 4. NTI Provides a mounting bracket (P/N 82075) for securing the exhaust pipes. 5. Ensure that the Vent/Air-Intake clearances are maintained, see Section 5.0 for details.

  • Page 28: Vent And Air-Intake Termination Clearances

    │Installation and Operation Instructions Trinity Lx Lx Series 5.0 VENT AND AIR-INTAKE TERMINATION CLEARANCES The quick reference table below is to be read in conjunction with the numbered notes as indicated, Figures 5-1 through 5-6, and the Venting Rules and Guidelines in Section 4.0. The instructions detailed in this section are a combination of Trinity Lx specific and National Gas Code restrictions.
  • Page 29 │ Trinity Lx Lx Series Installation and Operation Instructions Figure 5-1 All Models Termination Clearances Quick Reference Diagram...
  • Page 30 │Installation and Operation Instructions Trinity Lx Lx Series Illustrations of Termination Clearances Figure 5-2 All Models Side Wall Termination - Clearances Above Grade Clearances “F” and “G” Canada – Minimum 3 ft [915 mm] The US – Minimum 1 ft [305 mm] Two-Pipe Termination The letters represents a...
  • Page 31 │ Trinity Lx Lx Series Installation and Operation Instructions Figure 5-4 Lx150-800 Figure 5-6 All Models Concentric Vent Side Wall Clearances Roof Top Termination Clearances Trinity Lx can also be vented through the roof. The From appliance same clearances required for two-pipe sidewall exhaust terminations apply to roof-top terminations.
  • Page 32 │Installation and Operation Instructions Trinity Lx Lx Series Removing an Existing Boiler from Common Venting System Do not install the Trinity Lx into a common venting system with any other appliances. Failure to comply with this warning will cause flue gas spillage and leech carbon monoxide emissions into the surrounding air resulting in serious injury or death.

  • Page 33: Condensate Drain

    │ Trinity Lx Lx Series Installation and Operation Instructions 6.0 CONDENSATE DRAIN This unit produces liquid condensate in the heat exchanger and venting system as a product of combustion. Steps must be taken to ensure that condensate does not collect in the venting system; therefore, all exhaust piping must slope back to the appliance a minimum 1/4”...

  • Page 34: Installing Gas Piping

    Ensure that: • The gas line connection to the appliance does not apply any weight to the gas valve. NTI recommends using approved flexible gas piping (if acceptable by local codes) to connect the appliance to the gas supply (See Figure 7-1 for details).
  • Page 35 │ Trinity Lx Lx Series Installation and Operation Instructions Strain on the gas valve and fittings may result in vibration, premature component failure and leakage and may result in a fire, explosion, property damage, serious injury or death. Flexible gas piping cannot be used within the appliance cabinet and cannot pass through the cabinet wall, use rigid piping as shown in Figure 7-1.

  • Page 36: Lighting The Appliance

    │Installation and Operation Instructions Trinity Lx Lx Series 8.0 LIGHTING THE APPLIANCE Before Start-up refer to Mandatory Pre-commissioning Procedure for Plastic Venting in Section 4.0. Failure to follow these instructions can result in explosions, injury or death. Prior to turning the gas supply on and lighting the appliance, ensure all aspects of the installation are complete and in conformance with the instructions provided in this manual, including the Vent/Air-Intake, Condensate Drain, and System Water Piping.
  • Page 37 If the unit fails to light consistently and smoothly, contact NTI for technical assistance at 1-800-688-2575. Never allow the appliance to operate if the ignition or operation of the burner is rough or erratic.

  • Page 38: Gas Valve And Burner Set-Up

    │Installation and Operation Instructions Trinity Lx Lx Series 9.0 GAS VALVE AND BURNER SET-UP The Trinity Lx gas valve must be set-up by a licensed Gas Technician. Improper set-up may result in incorrect operation, damage to components or property, injury or death. Gas Line Pressure The appliance gas valve is equipped with a line pressure test port;...
  • Page 39 │ Trinity Lx Lx Series Installation and Operation Instructions Figure 9-1 Lx150-300 Gas Valve and Venturi Assembly Lx150 Orientation Gas Valve Orifice Location (See Kit 82650-1) Manifold Pressure Test Port Throttle/Input Line Pressure Adjustment Screw Test Port Air Intake Venturi Gas In Figure 9-2 Lx150-300 Gas Valve and Venturi Assembly Lx150E, Lx200 Orientation...
  • Page 40 │Installation and Operation Instructions Trinity Lx Lx Series Figure 9-3 Lx400 Gas Valve and Venturi Assembly Manifold Pressure Throttle/Input Test Port Adjustment Screw Line Pressure Orifice Location Test Port (See Kit 83017-1) Venturi Gas In Gas Valve Air Inlet Figure 9-4 Lx500 Gas Valve and Venturi Assembly Gas Valve Line Pressure Test Port...
  • Page 41 │ Trinity Lx Lx Series Installation and Operation Instructions Figure 9-5 Lx600-800 Gas Valve and Venturi Assembly Throttle/Input Gas Valve Adjustment Screw Manifold Pressure Test Port (outlet flange) Manual Gas Shutoff Valve Gas In Line Pressure Test Port (inlet flange) Remove cover to make adjustments to the throttle/input...
  • Page 42 4. Operate the unit at the minimum modulation rate (Table 9-2). Ensure the combustion remains smooth and and CO remain within the limits (Table 9-1). If not, do not adjust further, contact NTI for assistance. Flue Gas Analysis and Adjustment Each Trinity Lx is factory set to operate with Natural Gas, for appliances field converted to operate with Propane Gas, a flue gas analysis and adjustment is mandatory.
  • Page 43 │ Trinity Lx Lx Series Installation and Operation Instructions Figure 9-7 Lx150-200 Models Flue Gas Sampling Using Test Port Test Port Combustion Analyzer FLUE GAS TEST PORT PLUG - Remove test port plug to perform flue gas analysis. Re-install plug once sampling completed to prevent flue gas leakage during appliance operation.
  • Page 44 │Installation and Operation Instructions Trinity Lx Lx Series Figure 9-9 Lx500-600 Models Flue Gas Sampling Using Test Port Combustion Analyzer FLUE GAS TEST PORT PLUG Remove test port plug to perform flue gas analysis. Re-install plug once sampling completed to prevent flue gas leakage during appliance Test Port operation.

  • Page 45: Wiring Schematics

    │ Trinity Lx Lx Series Installation and Operation Instructions 10.0 WIRING SCHEMATICS Figure 10-1(a) Lx150-400 Models Connection Diagram...
  • Page 46 │Installation and Operation Instructions Trinity Lx Lx Series Figure 10-1(b) Lx150-400 Models Ladder/Logic Diagram...
  • Page 47 │ Trinity Lx Lx Series Installation and Operation Instructions Figure 10-2(a) Lx500-800 Models Connection Diagram...
  • Page 48 │Installation and Operation Instructions Trinity Lx Lx Series Figure 10-2(b) Lx500-800 Models Ladder/Logic Diagram...

  • Page 49: Installation Checklist

    │ Trinity Lx Lx Series Installation and Operation Instructions 11.0 INSTALLATION CHECKLIST Installation 1. If operating on Propane Gas, convert appliance using appropriate Kit number. See Table 7-1. 2. Locate the appliance in accordance with Section 3.0 of this manual. 3.
  • Page 50 │Installation and Operation Instructions Trinity Lx Lx Series Table 11-1 Hot Water Boiler Checklist for Controls and Safety Devices Applicable Paragraph Input Btuh Certification and Reporting 400,000 to Compliance Means/Measures ASME Requirements 2,500,000 CSD-1 1-3.1-77 Operating Controls Forced Circulation CW-130(a), Required Flow Switch - Factory installed.

  • Page 51: Annual Maintenance And Inspection

    Important Boilers Only - The hydronic system may need to be flushed to eliminate hard water scale (Use Fernox DS-40 Descaler, NTI PN: 83450. See Table 2-1 in Appendix B - Boiler Applications). Boiler Only - Boiler system cleansers and corrosion inhibitors must not be used to flush contaminants from water heaters or potable water systems.
  • Page 52 │Installation and Operation Instructions Trinity Lx Lx Series Refractory Ceramic Fibers (RFC) Personal Protective Equipment Recommended - Read the following warnings and handling instructions carefully before commencing any service work in the combustion chamber. The insulating material on the inside of the burner door and at the back of the combustion chamber contain Refractory Ceramic Fibers and should not be handled without personal protective equipment.

  • Page 53: Parts List

    │ Trinity Lx Lx Series Installation and Operation Instructions 13.0 PARTS LIST For a list of parts that corresponds to the item numbers in the bubbles, refer to Table 13-1. Note that that some item numbers may appear more than once in the parts list depending on which model number is being referenced. Building Owners - Replacement parts are available from your stocking wholesaler.
  • Page 54 │Installation and Operation Instructions Trinity Lx Lx Series Figure 13-2 Lx150-200 Models Heat Exchanger, Gas Valve, Blower and Burner Assembly Figure 13-3 Lx150-400 (Common) Electrical Housing, Controller, and Display Module...
  • Page 55 │ Trinity Lx Lx Series Installation and Operation Instructions Figure 13-4 Lx300-400 Models Cabinet, Vent and Air-Intake Parts...
  • Page 56 │Installation and Operation Instructions Trinity Lx Lx Series Figure 13-5 Lx300-400 Models Heat Exchanger, Gas Valve, Blower and Burner Assembly...
  • Page 57 │ Trinity Lx Lx Series Installation and Operation Instructions Commercial Models (Lx500-800) Figure 13-6 Lx500-800 Model Cabinet, Vent and Air-Intake Parts...
  • Page 58 │Installation and Operation Instructions Trinity Lx Lx Series Figure 13-7 Lx500 Model Heat Exchanger, Gas Valve, Blower and Burner Assembly...
  • Page 59 │ Trinity Lx Lx Series Installation and Operation Instructions Figure 13-8 Lx600-800 Model Heat Exchanger, Gas Valve, Blower and Burner Assembly...
  • Page 60 │Installation and Operation Instructions Trinity Lx Lx Series Figure 13-9 Lx500-800 Model Electrical Housing, Controller, and Display Module Table 13-1 Parts List: Lx150-800 Models Item Part # Models Description 82657 Premix burner 135.8 (Lx100-150; not Lx150E) 82658 150E, 200 Premix burner, 200.6 (Lx150E, Lx200) 84207 Premix burner, (Lx300) 83173...
  • Page 61 │ Trinity Lx Lx Series Installation and Operation Instructions Item Part # Models Description 84084 600–800 O-ring, Venturi to Blower (Lx600-800) 82054-1 150, 150E, 200 CVI Venturi 01 (Lx150-200) 81994 CVI Venturi 51 (Lx300) 82990 CVI Venturi (Lx400) 84013 600–800 CVI Venturi (Lx600-800) 82650 150, 150E, 200...
  • Page 62 │Installation and Operation Instructions Trinity Lx Lx Series Item Part # Models Description 83907 300, 400 Condensate Drain Tube (Lx300-400) 84313 500, 600 Condensate Drain Tube (Lx500-600) 83996 700, 800 Condensate Drain Tube (Lx700-800) 83112 All Models Trinity Divider Plate Insulation c/w Washer & Screw (Lx Series) 82770 150–500 Burner Door Viton Gasket (Lx150-500)
  • Page 63 │ Trinity Lx Lx Series Installation and Operation Instructions Item Part # Models Description 83872 All Models Barrier Strip, Line Voltage (Lx Series) 83877 150, 150E, 200 Electrical J-box, Line Voltage (Lx150-200) 83707 All Models Ignition Coil Q652B1006/B (Lx Series) 83724 All Models Spark Igniter Wire, 12"...
  • Page 64 │Installation and Operation Instructions Trinity Lx Lx Series Item Part # Models Description 83961 300, 400 Fuel-Air Metallic Tubing with Ends (Lx400) 84379 Fuel-Air Metallic Tubing with Ends (Lx500) 84147 600–800 Fuel-Air Metallic Tubing with Ends (Lx600-800) 83915 300, 400 High-Vent Pressure Switch, AFS460-367 (Lx300-400) 84380 High -Vent Pressure Switch, ANA124-406 (Lx500)

  • Page 65: Troubleshooting

    │ Trinity Lx Lx Series Installation and Operation Instructions 14.0 TROUBLESHOOTING Observe the following precautions when servicing the appliance. Failure to comply with these may result in fire, property damage, serious injury or death. Servicing the Appliance • Disconnect or shut off all energy sources to the appliance: 120VAC power, water and gas. •...
  • Page 66 │Installation and Operation Instructions Trinity Lx Lx Series Figure 14-1(a) Lx150-400 Figure 14-1(b) Lx500-800 Control Panel Fuse Locations Control Panel Fuse Location Fuse “A” 3AG 7A 250V Fuse “C” ATO Fast-Acting 2A 32V Auto Blade Type Fuse “B” 3AG 7A 250V Fuse “A”...
  • Page 67 6. If 12VDC is not detected across +V and –V, replace the power supply with NTI PN83592-1. DO NOT drop the plastic housing or allow it to swing down freely, it may be damaged...
  • Page 68 Optional Plug In Module (PIM) – The Trinity Lx controller has an optional removable plug in memory module called a PIM (NTI P/N 83998). The PIM is not supplied with the boiler and must be ordered separately if backup and restore options are desired. A copy of the non-safety configuration parameters can be stored (backed-up) to the PIM to be restored at a later date (i.e.
  • Page 69 Incorrect air switch setting Contact NTI technical support. Faulty air switch If venting and air inlet are clear, temporarily jumper the air switch. If the unit lights and operates smoothly –...
  • Page 70 │Installation and Operation Instructions Trinity Lx Lx Series Table 14-1 Troubleshooting Chart PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION Hold 66 – Interrupted air - Blower problem Check low voltage wiring from blower to switch ON (and blower is on) - Faulty controller controller.
  • Page 71 + and – ports to the air metering elbow. Condensation or other foreign matter may be obstructing the tubing, preventing the switch from sensing differential pressure caused by air flow through the metering elbow. Incorrect air switch setting Contact NTI technical support. Blown fuse " " Check Fuse...
  • Page 72 │Installation and Operation Instructions Trinity Lx Lx Series Table 14-1 Troubleshooting Chart PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION Inoperative CH and/or DHW Blown fuse " " Check Fuse pump Faulty controller If Fuse “B” not blown, and controller is operating, navigate to pump diagnostic on display. Manually switch pump on, check for 120VAC at pump connection terminal on line voltage barrier strip.
  • Page 73 │ Trinity Lx Lx Series Installation and Operation Instructions Table 14-3 Hold and Lockout Codes Code Description Note None Hold / No lockout Unconfigured safety data Lockout Waiting for safety data verification Lockout Internal fault: Hardware fault Hold Internal fault: Safety Relay key feedback error Hold Internal fault: Unstable power (DCDC) output Hold...
  • Page 74 │Installation and Operation Instructions Trinity Lx Lx Series Table 14-3 Hold and Lockout Codes Code Description Note 24VAC voltage low/high Hold Modulation fault Hold Pump fault Hold Motor tachometer fault Hold AC inputs phase reversed Lockout 54-57 RESERVED Internal fault: HFS shorted to IAS Lockout Internal fault: Mux pin shorted Lockout...
  • Page 75 │ Trinity Lx Lx Series Installation and Operation Instructions Table 14-3 Hold and Lockout Codes Code Description Note High fire switch OFF Hold High fire switch stuck ON Hold Low fire switch OFF Hold Low fire switch stuck ON Hold Fan speed failed during pre-purge Hold / Lockout Fan speed failed during pre-ignition...
  • Page 76 │Installation and Operation Instructions Trinity Lx Lx Series Table 14-3 Hold and Lockout Codes Code Description Note Invalid Ignite failure response setting Lockout Invalid Ignite failure retries setting Lockout Invalid Ignition source setting Lockout Invalid Interlock open response setting Lockout Invalid Interlock start check setting Lockout Invalid LCI enable setting...
  • Page 77 │ Trinity Lx Lx Series Installation and Operation Instructions Table 14-4 Alert Codes Code Description Action/Response None (No alert) Alert PCB was restored from factory defaults Safety configuration parameters were restored from factory defaults Configuration parameters were restored from factory defaults Invalid Factory Invisibility PCB was detected Invalid Factory Range PCB was detected Invalid range PCB record has been dropped...
  • Page 78 │Installation and Operation Instructions Trinity Lx Lx Series Table 14-4 Alert Codes Code Description Action/Response Application processor watchdog reset occurred Application processor brown-out reset occurred Safety processor watchdog reset occurred Alarm was reset by the user at the control Burner control firing rate was > absolute max rate Burner control firing rate was <...
  • Page 79 │ Trinity Lx Lx Series Installation and Operation Instructions Table 14-4 Alert Codes Code Description Action/Response Manual rate was > DHW max modulation rate Manual rate was < min modulation rate Manual rate in Standby was > absolute max rate Modulation commanded rate was >...
  • Page 80 │Installation and Operation Instructions Trinity Lx Lx Series Table 14-4 Alert Codes Code Description Action/Response Lead Lag OFF hysteresis was invalid Lead Lag ON hysteresis was invalid Lead Lag slave enable was invalid Lead Lag hysteresis step time was invalid 190- 203 RESERVED Lead Lag master was suspended due to fault...
  • Page 81 │ Trinity Lx Lx Series Installation and Operation Instructions Table 14-4 Alert Codes Code Description Action/Response Abnormal Recycle: LCI off during Ignition period Abnormal Recycle: Demand off during Drive to Purge Rate Abnormal Recycle: Demand off during Measured Purge Time Abnormal Recycle: Demand off during Drive to Light off Rate Abnormal Recycle: Demand off during Pre-Ignition test Abnormal Recycle: Demand off during Pre-Ignition time...
  • Page 82 │Installation and Operation Instructions Trinity Lx Lx Series Table 14-4 Alert Codes Code Description Action/Response Abnormal Recycle: Hardware SLO flame ripple Abnormal Recycle: Hardware SLO flame sample Abnormal Recycle: Hardware SLO flame bias range Abnormal Recycle: Hardware SLO flame bias heat Abnormal Recycle: Hardware SLO spark stuck Abnormal Recycle: Hardware SLO spark changed Abnormal Recycle: Hardware SLO static flame...
  • Page 83 │ Trinity Lx Lx Series Installation and Operation Instructions Table 14-4 Alert Codes Code Description Action/Response 464- RESERVED Internal error: EEPROM write was attempted before EEPROM was initialized Internal error: EEPROM cycle count address was invalid Internal error: EEPROM days count address was invalid Internal error: EEPROM hours count address was invalid Internal error: Lockout record EEPROM index was invalid Internal error: Request to write PM status was invalid...
  • Page 84 NY Thermal Inc. 65 Drury Cove Road Saint John, NB E2H 2Z8 Canada Technical Assistance: 1-800-688-2575 Website: www.nythermal.com Fax: 1-506-432-1135...

This manual is also suitable for:

Trinity lx600Trinity lx700Trinity lx800

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