NTI Lx150-400 Installation And Operation Instructions Manual
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NTI Lx150-400 Installation And Operation Instructions Manual

Trinity lx series
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Trinity Lx
Model Numbers: Lx150-400
Version Date: 2010-01-01
INSTALLATION AND OPERATION INSTRUCTIONS FOR
TRINITY LX SERIES
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................................................................................................... 7
4.0
GENERAL VENTING....................................................................................................... 11
5.0
VENT/AIR-INTAKE TERMINATION CLEARANCES.................................................. 20
6.0
CONDENSATE DRAIN .................................................................................................... 24
7.0
INSTALLING GAS PIPING.............................................................................................. 25
8.0
LIGHTING THE APPLIANCE ......................................................................................... 27
9.0
GAS VALVE AND BURNER SET-UP ............................................................................ 29
10.0 WIRING SCHEMATICS ................................................................................................... 34
11.0 INSTALLATION CHECKLIST ........................................................................................ 36
12.0 ANNUAL MAINTENANCE AND INSPECTION ........................................................... 37
13.0 PARTS LIST ...................................................................................................................... 39
14.0 TROUBLESHOOTING ..................................................................................................... 45
HAZARD SYMBOLS AND DEFINITIONS
unit may result in property damage, serious injury to occupants, or possibly death.
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
®

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  • Page 1: Table Of Contents

    NEW FEATURES Trinity Lx Second Central Heat Input Internal Lead-Lag Control System Sensor Model Numbers: Lx150-400 Modulation Sensor Alternatives Version Date: 2010-01-01 Warm Weather Shutdown INSTALLATION AND OPERATION INSTRUCTIONS FOR TRINITY LX SERIES This manual to be read in conjunction with the following documents which...
  • 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

    Water Heating Applications 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 The Trinity Lx is factory set to operate with Natural Gas. BEFORE OPERATING WITH PROPANE, the specified LP Conversion Kit must be installed to convert the appliance so it will operate safely with LP Propane. Listed below are the relevant NTI appliance 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 DESCRIPTION Lx150 Lx150E Lx200 Lx400 CSA Input Modulation 25,000 - 150,000 25,000 - 150,000 25,000 - 199,000 75,000 - 399,000 btu/hr [kw] [7.3 - 44.0] [7.3 - 44.0] [7.3 - 58.3] [21.9 - 117] DOE Heating Capacity...

  • Page 7: Appliance Location

    │ Trinity Lx Lx Series Installation and Operation Instructions 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 8 │Installation and Operation Instructions Trinity Lx Lx Series 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 9 │ 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 10 │Installation and Operation Instructions Trinity Lx Lx Series Figure 3-2(b) Lx400 Model 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 11: 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 12 │Installation and Operation Instructions Trinity Lx Lx Series Figure 4-1(a) Lx150-200 Models Figure 4-1(b) Lx150-200 Models Near Appliance Venting (CPVC) Near Appliance Venting (PVC) Swing Joint - to Swing Joint - to attain slope in attain slope in horizontal runs horizontal runs Air Inlet - Air Inlet -...
  • Page 13 │ Trinity Lx Lx Series Installation and Operation Instructions Vent/Air-Intake Pipe Material Table 4-3 Acceptable Vent and Air-Intake Pipe Material Installation Standards 2, 3 Items Materials United States Canada PVC - DWV ANSI/ASTM D2265 All Vent and Air-Intake All venting material in Vent Pipe and materials installed on gas PVC Schedule 40...
  • Page 14 │Installation and Operation Instructions Trinity Lx Lx Series Two-Pipe Venting Options Figure 4-3(a) Lx150-200 Figure 4-3(b) Typical for All Models Two-Pipe Side Wall Termination Two-Pipe Roof Termination Figure 4-4(a) Lx400 Figure 4-4(b) Lx400 Only Two-Pipe Side Wall Termination Two-Pipe Side Wall Termination (Optional Kit)
  • Page 15 Optional Termination Kits Lx400 Side Wall Termination Kit • Use NTI part number 83236 (4” connections; if venting with 6”, must adapt down to 4” at interior trim piece). • Side-wall terminations only. • Instructions included with vent terminal contain more detailed assembly and installation instructions.
  • Page 16 │Installation and Operation Instructions Trinity Lx Lx Series Labeling and Identification – Side Wall Terminations Figure 4-6(a) Typical for All Models Figure 4-6(b) Lx400 Only Two-Pipe Side Wall Termination Two-Pipe Side Wall Termination (Optional Kit) Gas Vent Directly Below Gas Vent Directly Below Keep Free of Obstructions Keep Free of Obstructions Exhaust...
  • Page 17 │ Trinity Lx Lx Series Installation and Operation Instructions Labeling and Identification – Concentric Vent Kit Figure 4-8(a) Lx150-200 Figure 4-8(b) Lx150-200 Concentric Vent Side Wall Termination Concentric Vent Detail with Vent Screen Insert vent screen between the end of the appliance exhaust vent and the end cap as shown.
  • Page 18 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 19 Mounting shown, to provide rigidity. Bracket 4. NTI Provides a mounting bracket PN. 82075 for securing the exhaust pipes. 5. Ensure that the Vent/Air-Intake clearances are maintained, see Section 5.0 for details.

  • Page 20: Vent/Air-Intake Termination Clearances

    │Installation and Operation Instructions Trinity Lx Lx Series 5.0 VENT/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 21 │ Trinity Lx Lx Series Installation and Operation Instructions Figure 5-1 All Models Termination Clearances Quick Reference Diagram 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 –...
  • Page 22 │Installation and Operation Instructions Trinity Lx Lx Series Figure 5-3 All Models Figure 5-4 Lx400 Only Two-Pipe Side Wall Clearances Termination Kit Side Wall Clearances Horizontal Separation 4-12” [102 mm – 305 mm] or greater than 36” [915 mm] From appliance exhaust Vertical Separation...
  • Page 23 │ Trinity Lx Lx Series Installation and Operation Instructions Extra precaution must be taken to adequately support the weight of the Vent/Air-Intake piping in applications using roof-top terminations. Failure to follow these instructions may result in venting or appliance component failure resulting in flue gas spillage leading to property damage, serious injury or death.

  • Page 24: Condensate Drain

    │Installation and Operation Instructions Trinity Lx Lx Series 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 25: Installing Gas Piping

    │ Trinity Lx Lx Series Installation and Operation Instructions 7.0 INSTALLING GAS PIPING The Trinity Lx is factory equipped to operate with Natural Gas, the installation of a conversion kit is required prior to operating with Propane Gas. The Natural to LP Conversion Kit (see Table 7-1) must be installed prior to installing the gas piping to the appliance.
  • Page 26 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 27: Lighting The Appliance

    │ Trinity Lx Lx Series Installation and Operation Instructions 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 28 If the unit fails to light consistently and smoothly, contact NTI for assistance at 1-800- 688-2575. Never allow the appliance to continue to operate if the ignition or operation of the burner is rough or erratic.

  • Page 29: Gas Valve And Burner Set-Up

    │ Trinity Lx Lx Series Installation and Operation Instructions 9.0 GAS VALVE AND BURNER SET-UP Set-up of the Trinity Lx gas valve must be performed by a licensed Gas Technician. Failure to perform the set-up correctly may result in incorrect operation, component failure, property damage, serious injury or death.
  • Page 30 │Installation and Operation Instructions Trinity Lx Lx Series Figure 9-1 Lx150 Orientation Gas Valve and Venturi Assembly (Front View) Orifice Location (See Kit 82650-1) Gas Valve Manifold Pressure Test Port Throttle/Input Adjustment Screw Line Pressure Test Port Gas In Venturi Figure 9-2 Lx150E and Lx200 Orientation Gas Valve and Venturi Assembly (Front View)
  • Page 31 │ Trinity Lx Lx Series Installation and Operation Instructions Figure 9-3 Lx400 Orientation Gas Valve and Venturi Assembly (Front View) Throttle/Input Adjustment Screw Line Pressure Test Port Manifold Pressure Test Port Orifice Location (See Kit 83017-1) Gas In Gas Valve Venturi...
  • Page 32 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 33 │ Trinity Lx Lx Series Installation and Operation Instructions Figure 9-3 Lx150-200 Models Flue Gas Sampling Using Test Port Test Port Combustion Analyzer Figure 9-4 Lx400 Model Flue Gas Sampling Using Test Port Test Port Combustion Analyzer...

  • Page 34: Wiring Schematics

    │Installation and Operation Instructions Trinity Lx Lx Series 10.0 WIRING SCHEMATICS Figure 10-1(a) All Models Connection Diagram...
  • Page 35 │ Trinity Lx Lx Series Installation and Operation Instructions Figure 10-1(b) All Models Ladder/Logic Diagram...

  • Page 36: Installation Checklist

    │Installation and Operation Instructions Trinity Lx Lx Series 11.0 INSTALLATION CHECKLIST Installation 1. If operating on Propane Gas, convert appliance using kit number 82650-1. 2. Locate the appliance in accordance with Section 3.0 of this manual. 3. Install the Vent/Air-Intake piping in accordance with Sections 4.0 and 5.0 of this manual. Ensure all joints are secured and cemented properly.

  • Page 37: 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 38 │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 39: Parts List

    │ Trinity Lx Lx Series Installation and Operation Instructions 13.0 PARTS LIST Building owners must contact their local Installer or Wholesaler. Replacement parts are available from your stocking wholesaler. Installers or Wholesalers may contact NY Thermal Inc. for assistance at 1-506-657-6000. Figure 13-1(a) Lx150-200 Models Cabinet, Vent and Air-Intake Parts...
  • Page 40 │Installation and Operation Instructions Trinity Lx Lx Series Figure 13-1(b) Lx150-200 Models Heat Exchanger, Gas Valve, Blower and Burner Assembly Figure 13-2 Common to All Models (Lx150-400) Electrical Housing, Controller, and Display Module...
  • Page 41 │ Trinity Lx Lx Series Installation and Operation Instructions Figure 13-3(a) Lx400 Model Cabinet, Vent and Air-Intake Parts...
  • Page 42 │Installation and Operation Instructions Trinity Lx Lx Series Figure 13-3(b) Lx400 Model Heat Exchanger, Gas Valve, Blower and Burner Assembly Table 13-1 Parts List: Lx150-400 Models Item Part # Models Description 82657 Premix burner 135.8 (Lx100-150; not Lx150E) 82658 150E, 200 Premix burner, 200.6 (Lx150E, Lx200)
  • Page 43 │ Trinity Lx Lx Series Installation and Operation Instructions Item Part # Models Description 82989 Gas Valve VR8615VB 1044B (Lx400) 83870 All Models Ignition Electrode, Dual – c/w gasket (Lx Series) 82774 All Models Flame Probe Gasket (Lx Series) 82600 150,150E,200 Gas Valve Regulator Vent Adapter 83883...
  • Page 44 │Installation and Operation Instructions Trinity Lx Lx Series Item Part # Models Description 83873 150,150E,200 TiS Wall Mount Bracket 2 (Lx150-200) 83953 Wall Mounting Clip (Lx400) 83505 150,150E,200 Grommet, Vinyl, 7/8" OD 83923 Grommet, Vinyl, 3/4" OD (Lx400) 83506 150,150E,200 Grommet, Vinyl, 1-3/8"...

  • Page 45: 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 46 │Installation and Operation Instructions Trinity Lx Lx Series Figure 14-1 All Models Control Panel Fuse Location Fuse “A” 3AG 7A 250V Fast-Acting Fuse “C” ATO 2A 32V Fuse “B” 3AG Auto Blade Type 7A 250V Fast-Acting To check, and if necessary replace, the fuses: •...
  • Page 47 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 48 │Installation and Operation Instructions Trinity Lx Lx Series Summary and Diagnostics Display – The Trinity Lx controller and Touchscreen display provides detailed operational and diagnostic information for aid in troubleshooting. When power is applied to the appliance the initial page displayed is the Summary page. Information presented on the Summary page includes Demand source, Burner state, status of sensors and pumps, and so forth.
  • Page 49 Incorrect air switch setting Contact NTI technical support. Faulty air switch Disconnect red and orange wires from air switch and check for open circuit between terminals 1 &3.
  • Page 50 │Installation and Operation Instructions Trinity Lx Lx Series Table 14-1 Troubleshooting Chart PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION • Check Fuse Lockout 81 – Delta T limit Insufficient water flow " " • Check appliance pump. • Ensure Appliance making banging or plumbing correct.
  • Page 51 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 Inoperative CH and/or DHW Blown fuse "...
  • Page 52 │Installation and Operation Instructions Trinity Lx Lx Series Table 14-1 Troubleshooting Chart PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION Blower power disconnected Verify that the 3-position Molex connector on the wiring harness is securely connected to its mating connector on the blower. Blown fuse "...
  • Page 53 │ Trinity Lx Lx Series Installation and Operation Instructions Table 14-3 Hold and Lockout Codes Code Description Note Internal fault: Safety relay test failed due to feedback not ON Lockout Internal fault: Safety RAM write Lockout Internal fault: Flame ripple and overflow Hold Internal fault: Flame number of sample mismatch Hold...
  • Page 54 │Installation and Operation Instructions Trinity Lx Lx Series Table 14-3 Hold and Lockout Codes Code Description Note Wait for leakage test completion Hold 71-77 RESERVED Demand lost in run Hold Outlet high limit Hold DHW high limit Disabled Delta T limit Hold / Lockout Stack limit Lockout...
  • Page 55 │ Trinity Lx Lx Series Installation and Operation Instructions Table 14-3 Hold and Lockout Codes Code Description Note Purge fan switch ON Hold / Lockout Purge fan switch OFF Hold / Lockout Combustion pressure and Flame ON Hold / Lockout Combustion pressure and Flame OFF Lockout Main valve ON...
  • Page 56 │Installation and Operation Instructions Trinity Lx Lx Series Table 14-3 Hold and Lockout Codes Code Description Note Invalid Pre-ignition time setting Lockout Invalid Pre-purge rate setting Lockout Invalid Pre-purge time setting Lockout Invalid Purge rate proving setting Lockout Invalid Run flame failure response setting Lockout Invalid Run stabilization time setting Lockout...
  • Page 57 │ Trinity Lx Lx Series Installation and Operation Instructions Table 14-4 Alert Codes Code Description Action/Response Safety group verification table was updated Invalid Parameter PCB was detected Invalid Range PCB was detected Alarm silence time exceeded maximum Invalid safety group verification table was detected 20-26 RESERVED Safety processor was reset...
  • Page 58 │Installation and Operation Instructions Trinity Lx Lx Series Table 14-4 Alert Codes Code Description Action/Response 70-74 RESERVED Absolute max fan speed was out of range Absolute min fan speed was out of range Fan gain down was invalid Fan gain up was invalid Fan minimum duty cycle was invalid Fan pulses per revolution was invalid Fan PWM frequency was invalid...
  • Page 59 │ Trinity Lx Lx Series Installation and Operation Instructions Table 14-4 Alert Codes Code Description Action/Response CH P-gain was invalid CH I-gain was invalid CH D-gain was invalid CH OFF hysteresis was invalid CH ON hysteresis was invalid CH sensor type was invalid CH hysteresis step time was invalid CH remote control parameter was invalid CH ODR not allowed with remote control...
  • Page 60 │Installation and Operation Instructions Trinity Lx Lx Series Table 14-4 Alert Codes Code Description Action/Response LL set point was invalid LL time of day set point was invalid LL outdoor temperature was invalid LL ODR time of day set point was invalid LL ODR time of day set point exceeded normal set point LL max outdoor set point was invalid LL min outdoor set point was invalid...
  • Page 61 │ Trinity Lx Lx Series Installation and Operation Instructions Table 14-4 Alert Codes Code Description Action/Response Abnormal Recycle: Interrupted air flow switch was off during Drive to Purge Rate Abnormal Recycle: Interrupted air flow switch was off during Measured Purge Time Abnormal Recycle: Interrupted air flow switch was off during Drive to Light off Rate Abnormal Recycle: Interrupted air flow switch was off during Pre-Ignition test Abnormal Recycle: Interrupted air flow switch was off during Pre-Ignition time...
  • Page 62 │Installation and Operation Instructions Trinity Lx Lx Series Table 14-4 Alert Codes Code Description Action/Response Abnormal Recycle: Hardware VSNSR A2D Abnormal Recycle: Hardware 28V A2D Abnormal Recycle: Hardware HFS IAS shorted Abnormal Recycle: Hardware PII INTLK shorted Abnormal Recycle: Hardware HFS LCI shorted Abnormal Recycle: Hardware HFS LFS shorted Abnormal Recycle: Invalid zero crossing Abnormal Recycle: fault stack sensor...
  • Page 63 │ Trinity Lx Lx Series Installation and Operation Instructions Table 14-4 Alert Codes Code Description Action/Response Internal error: Safety key bit 3 was incorrect Internal error: Safety key bit 4 was incorrect Internal error: Safety key bit 5 was incorrect Internal error: Safety key bit 6 was incorrect Internal error: Safety key bit 7 was incorrect Internal error: Safety key bit 8 was incorrect...
  • Page 64 NY Thermal Inc. 65 Drury Cove Road Saint John, NB E3H 2Z8 Canada Technical Assistance: 1-800-688-2575 Website: www.nythermal.com Fax: 1-506-432-1135...

This manual is also suitable for:

Trinity lx 150Trinity lx 150eTrinity lx 200Trinity lx 400

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