Global Sentinel Operating Manual

Global Sentinel Operating Manual

Thermoelectric generator
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NOTICE TO INSTALLER: These instructions shall be left with the consumer.
NOTICE TO CONSUMER: You must read all instructions in the manual and must keep all manuals for
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could result
in serious injury, death, or property damage.
• Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
• WHAT TO DO IF YOU SMELL GAS
- Do not try to light any appliance.
- Do not touch any electrical switch; do not use any
phone in your building.
- Leave the building immediately.
- Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
- If you cannot reach your gas supplier, call the fire
department.
• Installation and service must be performed by a
qualified installer, service agency or the gas supplier.
FIRE, EXPLOSION, AND ASPHYXIATION HAZARD
Improper adjustment, alteration, service, maintenance,
or installation can cause serious injury or death.
Read and follow installations and precautions in User's
Information Manual provided with this appliance.
Installation and service must be performed by a
qualified service agency or the gas supplier.
WARNING: For outdoor use only.
Not for use in residential dwellings.
WARNING: Do not attempt to clean catalytic pad.
Follow cleaning instructions accompanying appliance.
future reference.
WARNING
WARNING

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Summary of Contents for Global Sentinel

  • Page 1 WARNING FIRE OR EXPLOSION HAZARD Failure to follow safety warnings exactly could result in serious injury, death, or property damage. • Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
  • Page 2 AVERTISSEMENT RISQUE D’INCENDIE OU D’EXPLOSION Si les consignes de sécurité ne sont pas suivies à la lettre, cela pourrait entraîner une utilisation dangereuse, la mort, de graves blessures ou des dommages matériels. • Ne pas entreposer ni utiliser d’essence ou d’autres vapeurs et liquides inflammables à...
  • Page 3 Sentinel Thermoelectric Generator PERATING ANUAL 4008107 CLASS I, DIVISION 2, GROUP D, T3 -40°C to 49°C (-40°F to 120°F) Global Power Technologies www.globalte.com...
  • Page 5: Table Of Contents

    ADJUSTING THE FUEL PRESSURE TO MEET CALCULATED TARGET OCV ........30 4.3.4 CUSTOMER OUTPUT VOLTAGE ADJUSTMENT ................. 31 4.3.5 ENABLING OUTPUT VOLTAGE TEMPERATURE COMPENSATION..........31 APPLYING THE CUSTOMER LOAD ....................32 RECORD KEEPING ......................... 32 SHUTDOWN ..........................32 302842 Rev0 | Sentinel...
  • Page 6 FUEL FILTER MAINTENANCE AND CARTRIDGE REPLACEMENT ..........36 BATTERY CHARGING AND REPLACEMENT ................... 38 5.3.1 EXTERNALLY CHARGING THE START-UP BATTERY PACK............38 5.3.2 JUMP-STARTING THE SENTINEL TEG ..................39 5.3.3 REPLACING THE START-UP BATTERY PACK ................39 CATALYTIC CARTRIDGE ASSEMBLY REPLACEMENT ..............41 TROUBLESHOOTING ......................43 PARTS LIST ..........................
  • Page 7 Figure 22 – Net Power Ambient Temperature Correction Factor ................ 35 Figure 23 – Net Power Altitude Correction Factor ....................35 Figure 24 – Sentinel Net Power vs. Days of Operation ..................36 Figure 25 – Changing the Fuel Filter Cartridges ....................37 Figure 26 –...
  • Page 8: Important Safety Instructions

    SAVE THESE INSTRUCTIONS – This manual provides instructions for the operation and maintenance of the Sentinel Thermoelectric Generator, certified to Class I, Division 2, Group D, T3 -40°C to 49°C [-40°F to 120°F] Hazardous Location. Correct operation and maintenance according to this manual is critical for proper appliance function and safety.
  • Page 9 12. Do not exceed the fuel pressure stamped on the data plate without factory approval. If fuel pressure exceeds reasonable levels, the power unit may be seriously and permanently damaged. 13. The Sentinel Thermoelectric Generator exhaust can be very hot. Do not touch any of the exhaust components or bring exposed skin near hot exhaust gases.
  • Page 10: Manual Icons And Safety Banners

    NOTE: additional insight on specific topics. TECHNICALLY QUALIFIED PERSONNEL This manual contains necessary information for the correct operation of the Sentinel Thermoelectric Generator and is intended for use by technically qualified service technicians. Technically qualified technicians are individuals who are: ...
  • Page 11: Copyright, Liability, And Contact Information

    Canada T2C 5K7 Customer Service/Technical Support: 1-403-720-1190 Copyright© 2022 by Global Power Technologies (GPT). All rights reserved. No part of this manual may be reproduced without permission in writing from GPT, except by a reviewer who may quote brief passages or reproduce illustrations in a Copyright review with appropriate credit;...
  • Page 12: Product Information

    *Correction factors need to be applied based on site conditions. See Sections 4 & 5 for details. **Sentinel can be installed at higher altitudes; Section 4 discusses altitude effect on power output. 302842 Rev0 | Sentinel...
  • Page 13: Terms And Acronyms

    Portion of the TEG that consists of thermoelectric materials that convert Modules differential temperature to electric energy. Rated Power The nominal power that the Sentinel TEG produces when operating in an ambient temperature of 20°C [68°F] at sea level. BOCL At Beginning of Catalyst Cartridge Life.
  • Page 14: Data Plate

    Start-up Battery Pack The battery pack supplies power to the preheater for TEG start-up. Mounting Pole A pole recommended for use with the Sentinel TEG for easy and secure mounting of the TEG in the absence of a mounting wall. DATA PLATE Figure 1 –...
  • Page 15 Global Power Technologies PRODUCT INFORMATION The data plate shows important information about the Sentinel TEG and can be used as a quick reference point when performing service or contacting GPT. When contacting GPT, indicate both the complete Model Number and Serial Number of your Sentinel TEG. The Sentinel TEG data plate is located on the outside of the instrumentation enclosure door.
  • Page 16: Fuel Supply

    Global Power Technologies PRODUCT INFORMATION FUEL SUPPLY The Sentinel Thermoelectric Generator is designed for natural gas only. This fuel type is listed on the data plate. Do not use any other type of fuel. When supplying fuel to the Sentinel TEG: 1.
  • Page 17: Electronics User Interface

    Sentinel TEG is ready to operate. Sockets MP200 & MP201: [ + VPU – ] — to connect a voltmeter to when measuring power unit voltage. The Sentinel TEG  open circuit voltage is measured across VPU+ and VPU– while the SW200 toggle switch is set to the OCV position.
  • Page 18: Figure 2 - Status Indicators, With Electronics Enclosure Cover Plate

    Yellow LOW VOLTAGE ALARM (LV Alarm) indicator — signals that the customer output voltage is  low, with thresholds based on the Sentinel model. It remains unlit when there is no alarm. Low Voltage Alarm parameters vary between models as follows: o 12V Models —...
  • Page 19: Figure 3 - Main Electronics Board User Interface

    Global Power Technologies PRODUCT INFORMATION Figure 3 – Main Electronics Board User Interface 302842 Rev0 | Sentinel Page 12 of 61...
  • Page 20: Assembly And Installation

    [900 mm] under the instrumentation enclosure floor, in front and on both sides of the unit, and above the top of the fin duct. Ensure that the Sentinel TEG is positioned high enough to prevent flooding or heavy snowfall from interfering with the flow of cooling air.
  • Page 21: Unpacking And Lifting

    TEG with any signs of damage. WARNING! Unpack the Sentinel TEG from the shipping crate and inspect the unit for any damage that may have occurred during shipping. Keep the crate until the Sentinel TEG is operational.  1 – Sentinel TEG including an electronics assembly kit, GPT Part Number 303139, taped to the inside floor of the instrumentation enclosure, come with following items: ...
  • Page 22: Figure 5 - Lifting Sling Locations

    Global Power Technologies ASSEMBLY AND INSTALLATION During shipment, the Sentinel TEG is supported by a piece of plywood that is attached to the crate with 4 wood screws to protect the Sentinel TEG during transportation. Remove these 4 wood screws before lifting the Sentinel TEG from the crate.
  • Page 23: Assembly

    WARNING! The Sentinel TEG comes with a mounting bracket to easily attach the main assembly to a pole or wall. Separate this mounting bracket, with the supporting plywood, from the back of the Sentinel TEG by...
  • Page 24: Wall Mount

    Figure 6 ensuring that the Sentinel is in an upright vertical position. 3. Allow the mounting bracket to take the weight of the Sentinel TEG. 4. Refer to Figure 6, secure the Sentinel TEG to the mounting bracket by replacing those 4 BUTTON SOCKET CAP 1/4-28 machine screws.
  • Page 25: Fuel Filter Installation

    For Sentinel TEGs that are mounted to a wall, install the fuel filter in an upright position with the flow arrow pointing upwards. Allow 12 to 14” of clearance above the filter so that it is easily accessible when replacing the filter cartridges.
  • Page 26: Installing The Regulator Subassembly

    CONNECTING THE FUEL FILTER TO THE TEG Fuel to the Sentinel TEG is supplied through the fuel filter. Before connecting the fuel supply to the fuel filter, connect the fuel filter to the TEG as follows: 1.
  • Page 27: Connecting The Fuel Supply

    Global Power Technologies ASSEMBLY AND INSTALLATION CONNECTING THE FUEL SUPPLY Use only natural gas to fuel the Sentinel TEG. The inlet pressure to the Sentinel TEG must never exceed 25 psig [172.4 kPag]. WARNING! Before connecting the fuel supply to the fuel filter, review Section 2.3 and ensure that the supply fuel complies with...
  • Page 28: Installing The Start-Up Battery Fuse

    Global Power Technologies ASSEMBLY AND INSTALLATION The Sentinel TEG must be isolated from the gas supply piping system by closing its individual manual shut-off valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 0.5 psig [3.5 kPag].
  • Page 29: Start-Up And Operation

    4.1. The result of this calculation will be used in later steps if it is determined that a fuel pressure adjustment is required. Before adjusting the fuel pressure, allow the Sentinel TEG to run for 90 minutes, then evaluate the OCV. If the OCV is 23.6 VDC or greater and the fuel pressure is below 3.3 in.H O after one hour of operation, then no adjustment is required.
  • Page 30: Temperature Correction Factor

    Figure 13 – OCV Ambient Temperature Correction Factor As temperature increases, the Sentinel TEG’s power output drops by 0.25% per °C when the ambient temperature rises above 25°C [77°F]. To offset this potential drop in power output, the Sentinel TEG’s target OCV must be adjusted to accommodate the site’s ambient temperature.
  • Page 31: Altitude Correction Factor

    Figure 14 – OCV Altitude Correction Factor The Sentinel TEG is set at the factory’s altitude (see Data Plate in Figure 1). If the site altitude is different from the factory altitude, use the graph in Figure 14 to determine the altitude correction factor.
  • Page 32: Target Open Circuit Voltage Calculation

    To maximize the longevity of the Sentinel TEG, do not adjust OCV above 26 VDC. Operating the Sentinel TEG with OCV above 26 VDC could adversely affect the longevity of the unit. Contact GPT if the Sentinel TEG needs to be set above this point.
  • Page 33: Start-Up

     Ensure that the Sentinel TEG has been properly grounded and bonded to the site ground.  Inspect the air inlet screen at the bottom of the Sentinel TEG main assembly and ensure that it clean and is free of foreign materials.
  • Page 34: Figure 17 - Fuel System Assembly

    START-UP AND OPERATION Figure 17 - Fuel System Assembly Refer to Figure 3, Figure 16 and Figure 17 and follow these steps to start the Sentinel TEG: 1. Remove the electronics enclosure cover plate. 2. Locate the OCV/RUN mode switch, SW200, at the top left of the main electronics board and confirm that the switch is set to OCV.
  • Page 35: Figure 18 - Sentinel, Start Assist Tool

    VPU – ] and ensure that the voltage is slowly increasing. 10. Wait 45 minutes to 1 hour for the Sentinel TEG to achieve operating temperatures. As the unit powers up, the voltage will climb from zero to the factory set OCV as listed on the data plate.
  • Page 36: System Adjustments

    [ + VPU – ] on the main electronics board, while the OCV/RUN switch, SW200, is set to OCV. The following graph shows the Sentinel TEG’s net power output in relation to the OCV.
  • Page 37: Adjusting The Fuel Pressure To Meet Calculated Target Ocv

    3.3 in.H O, whichever comes first.  If the measured OCV is within 1 VDC of the calculated target OCV, the Sentinel TEG is ready to operate.  If the TEG’s fuel pressure is at 3.3 in.H O and the measured OCV is less than 23.6 VDC, consult...
  • Page 38: Customer Output Voltage Adjustment

    CAUTION! 24V Model (SENTINEL10-24) — 28.6 V Set the output voltage precisely to the voltage listed above based on the Sentinel model, then set the SW300 switch to the T.COMP.ON position. Calibrate the potentiometer before setting the SW300 switch to T.COMP.ON.
  • Page 39: Applying The Customer Load

    START-UP AND OPERATION APPLYING THE CUSTOMER LOAD Once the Sentinel TEG is operating at the calculated target OCV and all adjustments are completed, apply the customer load as follows: 1. Connect the customer load to the [ + TEG OUT – ] terminals at the bottom of the main electronics board.
  • Page 40: Maintenance

    The Sentinel Thermoelectric Generator is a highly reliable, solid-state appliance that requires very little maintenance; however, it should be checked regularly to ensure product longevity. The maintenance frequency on the Sentinel may vary depending on site conditions and usage. As a minimum, perform the following checks and maintenance once per year.
  • Page 41: Determining Catalytic Heater Cartridge Replacement Interval Based On Load Requirements

    For example, overall correction factor determined = 0.90 and minimum load requirement is 7.5 W. Catalytic Heater Cartridge will require replacement after ~360 days. 302842 Rev0 | Sentinel Page 34 of 61...
  • Page 42: Figure 22 - Net Power Ambient Temperature Correction Factor

    Global Power Technologies MAINTENANCE Figure 22 – Net Power Ambient Temperature Correction Factor Figure 23 – Net Power Altitude Correction Factor 302842 Rev0 | Sentinel Page 35 of 61...
  • Page 43: Fuel System Maintenance

    5.2.1 FUEL FILTER MAINTENANCE AND CARTRIDGE REPLACEMENT The Sentinel TEG is equipped with a natural gas scrubbing system to help eliminate contaminants in the fuel supply. To ensure maximum efficiency and longer appliance life, replace the filter cartridges (two of GPT# 302623) once every year.
  • Page 44: Figure 25 - Changing The Fuel Filter Cartridges

    Failure to replace the filter cartridges when required may result in excessive drop in pressure and the possibility of contaminant carry-over to the Sentinel TEG. To order additional filter cartridges, please contact GPT. Do not subject the fuel filter to vapours or liquids from synthetic solvents, acetone, methanol, esters, lacquer thinners, phosphates, etc.
  • Page 45: Battery Charging And Replacement

    1 Amp or less. Connect the charger to the [ + BATTERY – ] terminals on the main electronics board, and then activate the charger. Remove the connections once the battery pack has received a sufficient charge. 302842 Rev0 | Sentinel Page 38 of 61...
  • Page 46: Jump-Starting The Sentinel Teg

    MAINTENANCE 5.3.2 JUMP-STARTING THE SENTINEL TEG If the start-up battery pack is depleted, the Sentinel may be jump-started with an external 12 VDC battery, such as a vehicle battery, using a specialty cable assembly offered by GPT. The jump-start cable is equipped with protective features that ensure the Sentinel and the external battery operate safely.
  • Page 47: Figure 26 - Start-Up Battery Pack Replacement

    Global Power Technologies MAINTENANCE Figure 26 – Start-up Battery Pack Replacement 302842 Rev0 | Sentinel Page 40 of 61...
  • Page 48: Catalytic Cartridge Assembly Replacement

    Figure 28 – Catalytic Heater Connections the catalytic heater chamber, positioned with the two holes on the bottom. Secure the new cartridge using the four #8-32 x 3/8" screws that were previously removed. 302842 Rev0 | Sentinel Page 41 of 61...
  • Page 49: Figure 29 - Catalytic Heater Insulation Panels

    12. Re-install or replace the three insulation panels that were removed at the beginning of this installation. The panels ensure proper insulation of the catalytic heater assembly. Do not run the Sentinel TEG without the insulation panels installed. Ensure that all three insulation panels for the catalytic heater assembly are installed before starting up the Sentinel TEG.
  • Page 50: Troubleshooting

    Start-up battery voltage low battery Charge or replace start up Start-up battery voltage low 5.3.1, 5.3.3 battery Heater damaged Contact GPT Thermocouple connection to Check/tighten thermocouple valve not tight connection to valve 302842 Rev0 | Sentinel Page 43 of 61...
  • Page 51 Output voltage is Output voltage adjustment Adjust output voltage 4.3.4 too high incorrect potentiometer. Overloaded TEG Reduce customer load Low output voltage Heater cartridge at end of life Replace heater cartridge 302842 Rev0 | Sentinel Page 44 of 61...
  • Page 52: Parts List

    GPT Part # Part Description Replacement Frequency 302623 CARTRIDGE, REPLACEMENT, H2S & MOISTURE Annually (two required) 303747 PARTS KIT, HEATER CARTRIDGE, SENTINEL As determined in Section 5.1.3 302706 START-UP BATTERY PACK, SENTINEL Every 5 years 302722 FUSE, CERAMIC 2.5A 250 VAC 5X20MM...
  • Page 53: Generator Parts

    Global Power Technologies PARTS LIST GENERATOR PARTS Figure 30 – Parts List, Generator 302842 Rev0 | Sentinel Page 46 of 61...
  • Page 54 SCREW, BH SOC #10-32X0.3125, SS 302930 BRACKET ASSY, BATTERY SUPPORT, SENTINEL 302706 START-UP BATTERY PACK, SENTINEL 302356 SCREW, BH SOC 1/4-28X0.625, SS 303086 WIRE HARNESS, BATTERY TO PCBA, SENTINEL 10 302639 FUEL TRAIN REGULATOR SUBASSEMBLY 301350 INSTRUMENTATION ENCLOSURE ASSEMBLY 301356 PRIMARY SUBASSEMBLY 302362 SCREW, BH SOC #6-32X0.3125, SS...
  • Page 55: Primary Subassembly Parts

    GPT Part # Part Description 302638 GROMMET, 0.438-0.250, MCMASTER 9307K13 302360 SCREW, BH SOC #8-32X0.375, SS 301369 FRONT INSULATION COVER 302933 BOTTOM INSULATION COVER ASSY, SENTINEL 301321 INLET INSULATION 301297 HEATER BODY INLET 302359 SCREW, BH SOC #8-32X0.4375, SS 301298 HEATER BODY...
  • Page 56: Fuel Train Parts

    22790 CONNECTOR, 0.25 TB X 0.25 MNPT, 316SS, NO NUT VALVE, SHUT-OFF 302629 STREET ELBOW, 3/8 NPTF X 1/4 NPTM, BRASS 301349 GAS MOUNTING BRACKET - SENTINEL 303096 O-RING, X-PROFILE, .688ID, DASH 209, NBR 302941 TEE, 3/8NPT, FMF, BRASS 302940...
  • Page 57: Fuel Filter Parts

    SCREW, HEX HD, 1/4-20 X 1 SS 24653 VALVE, BALL, ¼” FNPT, BRASS NIPPLE, 1/4 NPT X 2" LG.BRASS 302641 REDUCER, 3/4 NPTM X 1/4 FNPT, BRASS 303090 FLODRI,G25A GAS SCRUBBER ASSY 302623 CARTRIDGE, REPLACEMENT, H2S & MOISTURE 302842 Rev0 | Sentinel Page 50 of 61...
  • Page 58: Appendix A - Weight And Dimensions

    Global Power Technologies APPENDIX A — WEIGHT AND DIMENSIONS APPENDIX A — WEIGHT AND DIMENSIONS Figure 34 – Sentinel TEG Dimensions Height 37 1/4” [946 mm] Width 15 7/8” [403 mm] Depth 17 13/16” [452mm] Weight 93 lb. [42.2 kg]...
  • Page 59: Appendix B - Wiring Diagram

    Global Power Technologies APPENDIX B — WIRING DIAGRAM APPENDIX B — WIRING DIAGRAM Figure 35 – Sentinel TEG Wiring Diagram 302842 Rev0 | Sentinel Page 52 of 61...
  • Page 60: Appendix C - Fuel Filter Replacement Cartridge Sds

    Global Power Technologies APPENDIX C – FUEL FILTER REPLACEMENT CARTRIDGE SDS APPENDIX C – FUEL FILTER REPLACEMENT CARTRIDGE SDS 302842 Rev0 | Sentinel Page 53 of 61...
  • Page 61 Global Power Technologies APPENDIX C – FUEL FILTER REPLACEMENT CARTRIDGE SDS 302842 Rev0 | Sentinel Page 54 of 61...
  • Page 62 Global Power Technologies APPENDIX C – FUEL FILTER REPLACEMENT CARTRIDGE SDS 302842 Rev0 | Sentinel Page 55 of 61...
  • Page 63 Global Power Technologies APPENDIX C – FUEL FILTER REPLACEMENT CARTRIDGE SDS 302842 Rev0 | Sentinel Page 56 of 61...
  • Page 64 Global Power Technologies APPENDIX C – FUEL FILTER REPLACEMENT CARTRIDGE SDS 302842 Rev0 | Sentinel Page 57 of 61...
  • Page 65 Global Power Technologies APPENDIX C – FUEL FILTER REPLACEMENT CARTRIDGE SDS 302842 Rev0 | Sentinel Page 58 of 61...
  • Page 66 Global Power Technologies APPENDIX C – FUEL FILTER REPLACEMENT CARTRIDGE SDS 302842 Rev0 | Sentinel Page 59 of 61...
  • Page 67 Global Power Technologies APPENDIX C – FUEL FILTER REPLACEMENT CARTRIDGE SDS 302842 Rev0 | Sentinel Page 60 of 61...
  • Page 68 Global Power Technologies APPENDIX C – FUEL FILTER REPLACEMENT CARTRIDGE SDS 302842 Rev0 | Sentinel Page 61 of 61...
  • Page 69: Maintenance And Performance Log

    O. If the fuel pressure has been adjusted up to 3.3 in.H O and the OCV is still higher than target, allow the Sentinel TEG to operate at the last adjusted setting and measure OCV again at the next maintenance visit. 302842 Rev0 | Sentinel...
  • Page 70 O. If the fuel pressure has been adjusted up to 3.3 in.H O and the OCV is still higher than target, allow the Sentinel TEG to operate at the last adjusted setting and measure OCV again at the next maintenance visit. 302842 Rev0 | Sentinel...

This manual is also suitable for:

Sentinel10-12Sentinel10-24

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