Watts PVi CENTURION Installation, Operation And Maintenance Manual
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Watts PVi CENTURION Installation, Operation And Maintenance Manual

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Installation, Operation and Maintenance Manual
CENTURION Water Heaters
with Edge
Natural Gas Modulating & Condensing
Water Heater Model CEN2000
WARNING: If the information in these instructions is not
followed exactly, a fire or explosion may result causing
property damage, personal injury or death.
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.
• 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.
Disclaimer
The information contained in this manual is subject to change without
notice from PVI Industries, LLC. PVI makes no warranty of any kind
with respect to this material, including, but not limited to, implied
warranties of merchantability and fitness for a particular application.
PVI is not liable for errors appearing in this manual, not for incidental
or consequential damages occurring in connection with the
furnishing, performance, or use of these materials.
•
OMM-0153_A
8/25/2022
®
[ii] Controller
@2022 PVI

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  • Page 1 Installation, Operation and Maintenance Manual CENTURION Water Heaters ® with Edge [ii] Controller Natural Gas Modulating & Condensing Water Heater Model CEN2000 WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.

  • Page 2: Table Of Contents

    Installation, Operation & Maintenance Manual Centurion Water Heater TABLE OF CONTENTS TABLE OF CONTENTS ................... 2 FOREWORD 5 SECTION 1: SAFETY PRECAUTIONS..............8 1.1 WARNINGS & CAUTIONS ....................8 1.2 EMERGENCY SHUTDOWN ....................9 1.3 PROLONGED SHUTDOWN ....................9 1.4 IMPORTANT – FOR MASSACHUSETTS INSTALLATIONS ..........10 SECTION 2: INSTALLATION ................
  • Page 3 Installation, Operation & Maintenance Manual Centurion Water Heater 5.1 INITIAL START-UP REQUIREMENTS ................42 5.2 TOOLS & INSTRUMENTS FOR COMBUSTION CALIBRATION ........43 5.2.1 Required Tools & Instrumentation ....................43 5.2.2 Installing Gas Supply Manometer ....................43 5.2.3 Accessing The Analyzer Probe Port ....................44 5.2.4 Recommendations For WHM Operation..................
  • Page 4 Installation, Operation & Maintenance Manual Centurion Water Heater SECTION 8: WATER HEATER MANAGEMENT ............. 76 8.1 GENERAL DESCRIPTION ....................76 8.2 WHM PRINCIPLES OF OPERATION .................77 8.3 WHM FEATURES .......................77 8.3.1 Valve Feedback ..........................77 8.3.2 Valve Supervisor ..........................77 8.3.3 Temperature Sensor Calibration ....................78 8.3.4 Manual Mode Password Required ....................

  • Page 5: Foreword

    FOREWORD FOREWORD The PVI CENTURION natural gas fueled modulating and condensing water heater represents a true industry advance to meet the needs of today's energy and environmental concerns. Designed for application in any closed loop hydronic system, the CENTURION's modulating capability relates energy input directly to fluctuating system loads.
  • Page 6 Centurion Water Heater- Edge [ii]: Install-Operation-Service FOREWORD Technical Terminology Meanings TERMINOLOGY MEANING A (Amp) Ampere ADDR Address AGND Analog Ground ALRM Alarm ANSI American National Standards Institute, ASME American Society of Mechanical Engineers Auxiliary Building Automation System, often used interchangeably with EMS Symbol rate, or the number of distinct symbol changes (signaling events) transmitted Baud Rate per second.
  • Page 7 Centurion Water Heater- Edge [ii]: Install-Operation-Service FOREWORD Technical Terminology Meanings TERMINOLOGY MEANING MA (mA) Milliampere (0.001) 1000 BTUs per Hour Modbus® A serial, half-duplex data transmission protocol developed by AEG Modicon NC (N.C.) Normally Closed NO (N.O.) Normally Open Nitrogen Oxide National Pipe Thread Oxygen O.D.

  • Page 8: Section 1: Safety Precautions

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SAFETY PRECAUTIONS SECTION 1: SAFETY PRECAUTIONS 1.1 WARNINGS & CAUTIONS Installers and operating personnel MUST observe all safety regulations at all times. The following warnings and cautions are general and must be given the same attention as specific precautions included in these instructions.

  • Page 9: Emergency Shutdown

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SAFETY PRECAUTIONS 1.2 EMERGENCY SHUTDOWN If overheating occurs or the gas supply fails to shut off, close the manual shutoff valve (Figure 1-1) on the outside of the unit. NOTE: The Installer must identify and indicate the location of the emergency shutdown manual gas valve to operating personnel.

  • Page 10: Important - For Massachusetts Installations

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SAFETY PRECAUTIONS 1.4 IMPORTANT – FOR MASSACHUSETTS INSTALLATIONS Requirements for Massachusetts Installations Water Heater Installations within the Commonwealth of Massachusetts must conform to the following requirements: • Water Heater must be installed by a plumber or a gas fitter who is licensed within the Commonwealth of Massachusetts.
  • Page 11 Centurion Water Heater- Edge [ii]: Install-Operation-Service SAFETY PRECAUTIONS Requirements for Massachusetts Installations 1. The equipment listed in Section 10 entitled "Equipment Not Required to Be Vented" in the most current edition of NFPA 54 as adopted by the Board; and 2.

  • Page 12: Section 2: Installation

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION SECTION 2: INSTALLATION 2.1 RECEIVING THE UNIT Each CENTURION Water Heater is shipped as a single, crated unit. The shipping weight for this model is approximately 1,850 lbs. (839 kg). The unit must be moved with proper rigging equipment for safety and to avoid damage. The unit should be completely inspected for evidence of shipping damage and shipment completeness at the time of receipt from the carrier and before the bill of lading is signed.

  • Page 13: Installation Clearances

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION 2.3.1 Installation Clearances All CENTURION models are the same height but vary in depth by model. The unit must be installed with the prescribed clearances for service as shown in Figure 2-1. The minimum clearance dimensions, required by PVI, are listed below for all models.
  • Page 14 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION Figure 2-1: Clearances W A R N I N G ! Keep unit area clear and free from all combustible materials and flammable vapors or liquids. FOR MASSACHUSETTS ONLY: For Massachusetts installations, the unit must be installed by a plumber or gas-fitter licensed within the Commonwealth of Massachusetts.

  • Page 15: Setting The Unit

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION 2.3.2 Setting The Unit If anchoring the unit, refer to Figure 1-2 for anchor locations. • All holes are flush with the bottom surface of the frame. • All dimensions shown are in inches [millimeters] Figure 2-2: Anchor Bolt Locations 2.3.3 Housekeeping Pad Requirements To ensure proper condensate drainage, the unit must be installed on a level concrete...

  • Page 16: Lifting Provisions

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION Water Heater Condensate Housekeeping Trap Neutralizer Support Figure 2-3: Condensate Neutralizer Tank Installation 2.4 LIFTING PROVISIONS W A R N I N G ! DO NOT attempt to lift or move Water Heater using the gas train or blower. Three lifting lugs are attached to the top of the heat exchanger, as shown below.

  • Page 17: Piping Connections

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION 2.5 PIPING CONNECTIONS When connecting the hot water outlet and return-water inlets to building piping, first make sure the mating surfaces are thoroughly clean. CENTURION Water Heaters have the following inlets and outlets: •...

  • Page 18: Internal Recirculation Water Loop

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION 2.5.1 Internal Recirculation Water Loop The internal Recirculation Water Loop assembly is located at the rear of the unit (Figure 2-6). This assembly contains a recirculation pump that connects the upper hot water outlet to the lower (cold) water inlet to heat exchanger.

  • Page 19: Test Hose Connection

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION 2.5.2 Test Hose Connection A test hose must be connected from the drain valve on the hot water outlet to the floor drain. This is required for startup and testing. The test hose diameter should be a minimum of 3/4" (1.9 cm).

  • Page 20: Sequencing Isolation Valve

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION BUILDING RECIRCULATION INLET (WARMER WATER) COLD WATER INLET (COOLER WATER) Figure 2-8: Dual Inlets 2.5.4 Sequencing Isolation Valve If the CENTURION Water Heater was ordered for use with the Water Heater Management (WHM) system, the unit will arrive with the actuator-controlled Sequencing Isolation Valve, packed separately within the shipping container.

  • Page 21: Condensate Drain And Piping

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION TEMPERATURE & PRESSURE RELIEF VALVE 3” HOT WATER OUTLET Figure 2-9: 2.6 Temperature and Pressure Relief Valve Location 2.7 CONDENSATE DRAIN AND PIPING CENTURION Water Heaters are designed to condense water vapor from the flue products. The installation must therefore have provisions for suitable condensate drainage or collection.

  • Page 22: Gas Supply Piping

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION If a floor drain is not available, a condensate pump can be used to remove the condensate to an appropriate drain. The maximum condensate flow rate is: Model Maximum Condensate Flow Per Unit CEN2000 16 gallons (38 L) per hour TRAP INLET...

  • Page 23: Gas Supply Specifications

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION Prior to installation, all pipes should be de-burred and internally cleared of any scale, metal chips or other foreign particles. Do NOT install any flexible connectors or unapproved gas fittings. Piping must be supported from the floor, ceiling or walls only and must not be supported by the unit.

  • Page 24: Massachusetts Installations Only

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION NOTE: It is the responsibility of the customer to source and purchase the appropriate gas regulator as described above. However, PVI offers for sale an appropriate regulator, which may be ordered at the time of unit purchase or separately. Contact your PVI sales representative for more information.

  • Page 25: Ac Electrical Power Wiring

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION 2.9 AC ELECTRICAL POWER WIRING CENTURION Water Heaters are available with the following power options: Model Voltage Phase Amperage CEN2000 208 V 3 / 60 Hz CEN2000 460 V 3 / 60 Hz 2.9.1 Power Panel Locations External AC power connection is made inside the Power Panel, located on the front of the unit, behind the unit’s removable front panel.

  • Page 26: Field Control Wiring - I/O Board

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION WIRE CONDUITS FUSE BLOCK FUSE BLOCK TERMINAL Figure 2.10-2: Main Power Panel, 110 V BLOCKS POWER BREAKER 24VDC POWER SUPPLY TERMINAL BLOCKS 12VDC POWER SUPPLY Figure 2-13: Electrical Power Panel Internal Components NOTES: The 115 VDC to 24 VDC transformer provides power to the Edge Controller, Condensate Block Sensor and the Sequencing Isolation Valve.
  • Page 27 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION OXYGEN SENSOR 4-20mA OUT PUMP RELAY BLOCKED FLUE BLOWER RELAY SWITCH Figure 2-14: Secondary Power Panel Terminals I/O BOARD SPARK MONITOR POWER HARNESS FROM SHELL 63232 HARNESS 63216-2 CONNECTOR J24 CONNECTOR J9 40 PIN RIBBON I/O HARNESS 63220...

  • Page 28: I/O Board Connections

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION 2.10.1 I/O Board Connections The I/O board contains the terminals listed below, arranged on removable, named connector strips J3 through J7 and J14, plus Molex connectors for unit harnesses. The maximum gauge of wires connecting to the I/O board is 14.
  • Page 29 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION Connector Strip J4 Terminals Pin # Name Description In a multiple application environment, connection to the 2 loop return Return Loop 2 header temperature sensor. Connection to the shield from any cable. Shield RTD Spare 1 Reserved.
  • Page 30 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION Connector Strip J6 Terminals Pin # Name Description Remote Interlock Out Connection to an auxiliary device interlock, such as louver open feedback or flow sensor. Remote Interlock Return Delayed Interlock 1 Out Connection to an auxiliary device interlock that requires a delay Delayed Interlock 1 Return before the plant starts firing.

  • Page 31: Flue Gas Vent Installation

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION 2.11 FLUE GAS VENT INSTALLATION PVI’s CENTURION Venting and Combustion Air Design Guide should be consulted before any flue or combustion air venting is designed or installed. Suitable, U/L approved, positive pressure, watertight vent materials MUST be used for safety and UL certification.

  • Page 32: Combustion Air

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION 2.12 COMBUSTION AIR The CENTURION Venting and Combustion Air Design Guide, TAG-0022 (GF-2050) must be consulted before any inlet air venting is designed or installed. Air supply is a direct requirement of ANSI 223.1, NFPA-54, CSA B149.1 and local codes.
  • Page 33 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION Once system load is satisfied and all Client units have stopped firing, the WHM Manager opens the Sequencing Valves of units specified in Min Unit settings in Main Menu → Advanced Setup →...

  • Page 34: Water Heater Pump Relay

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 2: INSTALLATION 2.14 WATER HEATER PUMP RELAY The CENTURION’s power panel includes a secondary output board with a pump relay designed to operate a Water Heater pump. This relay provides 120 VAC with a maximum pilot duty of 3 amps.

  • Page 35: Section 3: Edge Controller Operation

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 3: EDGE CONTROLLER OPERATION SECTION 3: EDGE CONTROLLER OPERATION This section provides a brief outline of how to gain access to the Water Heater’s Edge Controller functionality. Full instructions for using the Edge Controller to setup, configure and operate a CENTURION Water Heater are included in the Edge Controller Manual (OMM-0161).

  • Page 36: Login And Password Entry

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 3: EDGE CONTROLLER OPERATION 3.1 LOGIN AND PASSWORD ENTRY The Edge Controller has multiple levels of password protection. Level Password Description No password The default. Many parameters are visible but “Read Only.” Allows for routine maintenance by PVI trained technicians. A higher-level password for Master Technicians is distributed on an individual basis.

  • Page 37: Section 4: Start Sequence

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 4: START SEQUENCE SECTION 4: START SEQUENCE The information in this section provides a guide to starting the CENTURION Water Heater using the Edge Controller. It is imperative that the initial startup of this unit be performed by factory trained personnel.
  • Page 38 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 4: START SEQUENCE HIGH GAS PRESSURE SWITCH LOW GAS MANUAL PRESSURE SHUT-OFF SWITCH VALVE SSOV Figure 4-1: SSOV Location 3. The Auxiliary Delay occurs for a configurable length of time and the Delayed Interlocks are closed.
  • Page 39 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 4: START SEQUENCE BLOWER PROOF SWITCH BLOCKED INLET SWITCH Figure 4-3: Blocked Inlet and Blower Proof Switch 6. On the Ignition Sequence screen, the Purging indicator turns grey while purging is underway and Purge Timer displays the purge cycle’s elapsed time in seconds. Figure 4-4: Ignition Sequence Screen –...

  • Page 40: Start/Stop Levels

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 4: START SEQUENCE d) If no spark is present 3 seconds into the ignition trial, the Controller aborts the Ignition Cycle and shuts down the Water Heater. Refer to Section 10: Troubleshooting in this guide for guidance if this occurs. TO BLOWER STEPPER MOTOR...

  • Page 41: Start/Stop Levels - Air/Fuel & Energy Input

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 4: START SEQUENCE 4.3 START/STOP LEVELS – AIR/FUEL & ENERGY INPUT The table below shows the relationship between the energy input and Air/Fuel Valve position for the models covered in this document. CEN2000 Air/Fuel Valve Position NATURAL GAS Air/Fuel Valve Position Energy Input...

  • Page 42: Section 5: Initial Start-Up

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 5: INITIAL START-UP SECTION 5: INITIAL START-UP 5.1 INITIAL START-UP REQUIREMENTS • Complete installation instructions SECTION 2:, including gas supply piping, vent installation and condensate drain piping. Starting a unit without the proper piping, venting, or electrical systems can be dangerous and may void the product warranty.

  • Page 43: Tools & Instruments For Combustion Calibration

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 5: INITIAL START-UP 5.2 TOOLS & INSTRUMENTS FOR COMBUSTION CALIBRATION To properly perform combustion calibration, the proper instruments and tools must be used and correctly attached to the unit. The following sections outline the necessary tools and instrumentation as well as their installation.

  • Page 44: Accessing The Analyzer Probe Port

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 5: INITIAL START-UP 5.2.3 Accessing The Analyzer Probe Port 1. Remove the 1/4” NPT plug from the exhaust manifold. 2. If necessary, adjust the stop on the combustion analyzer probe so it will extend mid-way into the flue gas flow.

  • Page 45: Instructions For Combustion Calibration

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 5: INITIAL START-UP Figure 5-4: Gas Pressure Adjustment Screw and TAC Screw Location W A R N I N G : Combustion calibration and O Trim can both alter the voltage sent to the blower (Calibration voltages), and thus interfere with each other.
  • Page 46 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 5: INITIAL START-UP 7. Once you have completed the previous steps, move the manometer (or use a secondary one) to the downstream side of the SSOV and press Next to continue. 8. Choose the NOx requirement for this installation: None or <= 20 PPM. Figure 5-6: Choose NOx Requirement 9.
  • Page 47 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 5: INITIAL START-UP 14. With the valve position still at 100%, insert the combustion analyzer probe into the exhaust manifold probe opening (see Figure 5.2-2 in Section 5.2.3) and allow enough time for the combustion analyzer reading to stabilize. 15.

  • Page 48: Reassembly

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 5: INITIAL START-UP NATURAL GAS Final Valve Positions Standard NOx Valve Position 5.6% ± 0.2% ≤20 ppm <100 ppm 5.6% ± 0.2% ≤20 ppm <100 ppm 5.6% ± 0.2% ≤20 ppm <100 ppm 5.6% ±...

  • Page 49: Adjusting The Automatic Reset Limit Switch Temperature

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 5: INITIAL START-UP Note the following points: • Both switches display the temperature to which the switch is set (the temperature limit), not the actual temperature it is reading. • Both switches can display temperatures in Fahrenheit or Celsius. •...

  • Page 50: Changing The Readout Between Fahrenheit And Celsius

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 5: INITIAL START-UP RESET Figure 5-10: Manual Reset Over-Temperature Limit Switch 5.4.3 Changing The Readout Between Fahrenheit and Celsius 1. Press and hold both the Increase and Decrease arrows at the same time for about 4 seconds.

  • Page 51: Minimum Load Adjustment

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 5: INITIAL START-UP Setting Outlet Temperature Setpoint – Standalone Units: 1. On a standalone unit, go to: Advanced Setup → Unit → Application Configuration. 2. The setpoint for the WHM Cascade can be a constant, or received from a remote source, such as a BAS.

  • Page 52: Maximum Load Adjustment

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 5: INITIAL START-UP 5.5.3 Maximum Load Adjustment Check the temperature control at maximum load as follows: 1. Go to: Advanced Setup → Performance → Temperature Control → FFWD Settings. 2. Ensure the Outlet Feedback parameter is set to No. 3.

  • Page 53: Remote Setpoint Mode

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 5: INITIAL START-UP 1. Go to: Advanced Setup → Unit → Application Configuration. Figure 5-14: Application Configuration Screen 2. Set the Operating Mode to Constant Setpt. 3. Set the Setpoint to the desired value, adjustable from 60°F to 170°F (15.6°C to 76.7°C). 4.

  • Page 54: Section 6: Safety Device Testing

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 6: SAFETY DEVICE TESTING SECTION 6: SAFETY DEVICE TESTING 6.1 TESTING SAFETY DEVICES Periodic safety device testing is required to ensure that the control system and safety devices are operating properly. The Water Heater control system comprehensively monitors all combustion-related safety devices before, during and after the start sequence.

  • Page 55: Low Gas Pressure Test

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 6: SAFETY DEVICE TESTING 6.2 LOW GAS PRESSURE TEST To simulate a low gas pressure fault, refer to Figure 6-2 and perform the following steps: 1. Remove the front panel from the Water Heater to access the gas train components. 2.

  • Page 56: High Gas Pressure Test

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 6: SAFETY DEVICE TESTING 6.3 HIGH GAS PRESSURE TEST To simulate a high gas pressure fault, refer to Figure 6-4 and perform the following steps: 1. Close the 1/4" ball valve located at the High Gas Pressure switch. 2.

  • Page 57: Low Water Level Fault Test

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 6: SAFETY DEVICE TESTING Figure 6-4: HIGH Gas Pressure Test Components 6.4 LOW WATER LEVEL FAULT TEST 1. Set the Controller’s Enable/Disable switch to Disable. 2. Close the water shut-off valves in the supply and return piping to the unit. 3.

  • Page 58: Water Temperature Fault Test

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 6: SAFETY DEVICE TESTING 6.5 WATER TEMPERATURE FAULT TEST A high-water temperature fault is simulated by adjusting the Automatic Reset Over- Temperature switch. 1. Start the unit in the normal operating mode and allow the unit to stabilize at its setpoint. 2.

  • Page 59: Interlock Tests

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 6: SAFETY DEVICE TESTING 6.6 INTERLOCK TESTS The unit is equipped with three interlock circuits, connected to the I/O board’s connector strip J6, labeled Remote Interlock, Delayed Interlock 1 and Delayed Interlock 2 (see Section 2.10.1).

  • Page 60: Flame Fault Test

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 6: SAFETY DEVICE TESTING 6.7 FLAME FAULT TEST Flame faults can occur during ignition or while the unit is already running. To simulate each of these fault conditions, proceed as follows: 1. Set the Controller’s Enable/Disable switch to Disable. 2.

  • Page 61: Air Flow Fault Tests-Blower Proof & Blocked Inlet Switches

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 6: SAFETY DEVICE TESTING 6.8 AIR FLOW FAULT TESTS-BLOWER PROOF & BLOCKED INLET SWITCHES These tests check the operation of the Blower Proof switch and Blocked Inlet switch. 6.8.1 Blower Proof Switch Test Figure 6-7: Blower Proof &...

  • Page 62: Blocked Inlet Switch Test

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 6: SAFETY DEVICE TESTING 6.8.2 Blocked Inlet Switch Test This test will be run in simulated fire mode, with the Blocked Inlet switch isolated from the rest of the control circuitry. 1. Set the Controller’s Enable/Disable switch to Disable. 2.

  • Page 63: Ssov Proof Of Closure Switch Check

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 6: SAFETY DEVICE TESTING 6.9 SSOV PROOF OF CLOSURE SWITCH CHECK The SSOV (shown in Figure 6-7) contains the Proof of Closure switch. The Proof of Closure switch circuit is checked as follows: 1.

  • Page 64: Check Ignition Switch Open During Ignition

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 6: SAFETY DEVICE TESTING 6.11 CHECK IGNITION SWITCH OPEN DURING IGNITION The Ignition switch (and the Purge switch) is located on the Air/Fuel Valve. To check the switch, proceed as follows: 1. Set the Controller’s Enable/Disable switch to Disable. 2.
  • Page 65 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 6: SAFETY DEVICE TESTING (This page intentionally blank) OMM-0153_A • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 8/25/2022 Page 65 of 131...

  • Page 66: Section 7: Maintenance

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 7: MAINTENANCE SECTION 7: MAINTENANCE 7.1 MAINTENANCE SCHEDULE All CENTURION Water Heaters require regular routine maintenance to keep up efficiency and reliability. For best operation and life of the unit, the following routine maintenance procedures should be performed in the time periods specified in the table below.

  • Page 67: Igniter-Injector

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 7: MAINTENANCE 7.2 IGNITER-INJECTOR The ignitor-injector should be inspected annually and replaced at least every 24 months of operation, sooner if there is evidence of substantial erosion or carbon build-up. Parts and instructions are included in the CEN2000 12 Month (P/N 58025-25) and 24 Month (P/N 58025- 26 and 58025-27) Maintenance Kits.

  • Page 68: Flame Detector

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 7: MAINTENANCE 7.3 FLAME DETECTOR The CENTURION Flame Detector (kit P/N 24356-1) is located on the burner plate at the top of the unit (see Figure 7-1). The flame detector should be inspected every 12 months and replaced every 24 months, or sooner if damaged or warped.

  • Page 69: Safety Device Testing

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 7: MAINTENANCE 7.5 SAFETY DEVICE TESTING Systematic and thorough tests of the operating and safety devices should be performed to ensure that they are operating as designed. Certain code requirements, such as ASME CSD-1, require that these tests be performed on a scheduled basis.

  • Page 70: Condensate Drain Trap

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 7: MAINTENANCE 7.7 CONDENSATE DRAIN TRAP All CENTURION Water Heaters contain a condensate trap (P/N 24441C), located external to the unit, attached to the exhaust manifold’s drain at the rear of the unit. This trap must be inspected for leaks and blockages, cleaned to ensure that the float is free to move, and condensate flows normally, and the O-Ring (P/N 84017C included in all 24 Month Maintenance Kits) replaced if it is worn or damaged.

  • Page 71: Air Filter Cleaning And Replacement

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 7: MAINTENANCE 7.8 AIR FILTER CLEANING AND REPLACEMENT The Water Heater’s air filter should be maintained as follows: Cleaned: every 12 months. Replaced: after 24 months if it shows any signs of deterioration. However, if still in good condition you can order a 24 Month Maintenance kit with air filter cleaning kit.

  • Page 72: Shutting Water Heater Down For Extended Period

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 7: MAINTENANCE 7.9 SHUTTING WATER HEATER DOWN FOR EXTENDED PERIOD If the Water Heater is to be taken out of service for an extended period of time (one year or more), the following must be followed. 1.

  • Page 73: Recommended Periodic Testing

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 7: MAINTENANCE 7.10 RECOMMENDED PERIODIC TESTING W A R N I N G ! Periodic testing of all Water Heater controls and safety devices is required to ensure they continue to operate as designed. Precautions must be taken while tests are being performed to protect against bodily injury and property damage.

  • Page 74: Recommended Spare Parts

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 7: MAINTENANCE Recommended Periodic Testing ITEM FREQUENCY ACTION BY REMARKS Semi- Condensate Trap Operator See Section 7.7: Condensate Drain Trap. Annually Verify oxygen level is between 3% and 8% during Oxygen (O ) Level Monthly Operator Water Heater operation.
  • Page 75 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 7: MAINTENANCE (This page intentionally blank) OMM-0153_A • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 8/25/2022 Page 75 of 131...

  • Page 76: Section 8: Water Heater Management

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 8: WATER HEATER MANAGEMENT SECTION 8: WATER HEATER MANAGEMENT The on-board Water-Heater Management system (WHM) feature is integrated in the Edge Controller, designed to stage and coordinate multiple CENTURION Water Heaters while maximizing operational efficiency. The WHM software code resides in each Edge Controller that is part of the system.

  • Page 77: Whm Principles Of Operation

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 8: WATER HEATER MANAGEMENT 8.2 WHM PRINCIPLES OF OPERATION The WHM system communicates with the plant Water Heaters via a RS485 network utilizing Modbus RTU protocol (8-bit, 9600 baud, no parity). Multiple baud rates (9600, 19200, 38400, 57600) options are available in WHM Cascade menu.

  • Page 78: Temperature Sensor Calibration

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 8: WATER HEATER MANAGEMENT 8.3.3 Temperature Sensor Calibration The Temperature Sensors screens allows you calibrate the unit’s temperature sensors to achieve optimal performance. Complete the following to calibrate the temperature sensors. Figure 8-2: Temperature Sensors Screen 1.

  • Page 79: High Temperature Governor

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 8: WATER HEATER MANAGEMENT 8.3.7 High Temperature Governor The High Temperature Governor is a feature that aggressively prevents the outlet temperature from exceeding the “Temperature High Limit”. The High Temperature Governor is independent of the system PID and Feed-Forward control methodology and independently modulates the Valve Position (Fire Rate) if the outlet temperature dangerously approaches the Temperature Hi Limit parameter.

  • Page 80: Whm Parameters

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 8: WATER HEATER MANAGEMENT The following messages may appear on this screen: – The Client Failsafe Mode has been activated FAILSAFE ACTIVE – All available heaters are ignited All Heaters On – All available heaters are off All Heaters Off –...
  • Page 81 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 8: WATER HEATER MANAGEMENT WHM Cascade → Cascade Comm Parameters Menu Item Available Choices or Limits Default Display Minimum Maximum Unit Address The address in the WHM Cascade of the current unit. Address WHM Manager only: The minimum address in the WHM cascade Address WHM Manager only: The maximum address in the WHM cascade...
  • Page 82 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 8: WATER HEATER MANAGEMENT WHM CLIENT SCREEN WHM MANAGER SCREEN Figure 8-5: Cascade Communication Screens WHM Cascade → Application Configuration Parameters Available Choices or Limits Default Menu Item Display Minimum Maximum Read Only Application Specifies the application for the entire WHM Cascade.
  • Page 83 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 8: WATER HEATER MANAGEMENT Remaining WHM parameters are in WHM Cascade → Operating Controls. Operating Controls → Sequencing Control Parameters Available Choices or Limits Menu Item Display Default Minimum Maximum 100% Next On Valve Pos The valve position that triggers the next unit to come on line.
  • Page 84 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 8: WATER HEATER MANAGEMENT Operating Controls → Valve Configuration Parameters Available Choices or Limits Menu Item Display Default Minimum Maximum Aout 2 Read Only Select Output Select the output you want to configure. Current Read Only Output Signal Type...

  • Page 85: Whm Hardware Installation & Set-Up Instructions

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 8: WATER HEATER MANAGEMENT Figure 8-10: Operating Controls: Lead/Lag Control Screen 8.7 WHM HARDWARE INSTALLATION & SET-UP INSTRUCTIONS The following sections provide the basic installation and set-up instructions for implementing a Water Heater Management System (WHM) to control up to 16 CENTURION Water Heaters. 8.7.1 Installation Notes Multi-unit configurations require a sequencing valve.
  • Page 86 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 8: WATER HEATER MANAGEMENT Figure 8-11: Typical Daisy-Chain Modbus/RS485 Network NOTE: WHM Manager doesn’t necessarily have to be on either end of the Daisy-Chain loop. Any one of the Edge WHM units included in the Modbus network can be the Manager. However, it is recommended that you decide which unit will be the Manager and which will be the last unit on the daisy-chain prior to performing the wiring connections.

  • Page 87: Control And Power Wiring

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 8: WATER HEATER MANAGEMENT 8.7.4 Control And Power Wiring Control and power wiring connections to the Sequencing Valves associated with each Edge WHM unit is accomplished by simply ensuring that the 4-pin Molex connectors on the units are connected to the corresponding connectors on the valves.
  • Page 88 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 8: WATER HEATER MANAGEMENT Reference SD-A-659 rev C Figure 8-13: WHM Network Wiring Diagram OMM-0153_A • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 8/25/2022 Page 88 of 131...
  • Page 89 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 8: WATER HEATER MANAGEMENT Reference SD-A-927 Figure 8-14: WHM Network Wiring Diagram rev C OMM-0153_A • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 8/25/2022 Page 89 of 131...

  • Page 90: Whm Programming & Start-Up

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 8: WATER HEATER MANAGEMENT 8.8 WHM PROGRAMMING & START-UP All required hardware installation and network wiring must be completed before configuring the WHM parameters into the WHM Manager and Client units. In addition, the required menu entries must be determined based on the descriptions in the previous sections.

  • Page 91: Whm Client Configuration & Start-Up Procedure

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 8: WATER HEATER MANAGEMENT 5. Go to: Advanced Setup → WHM Cascade → Operating Controls → Sequencing Control. The Next On Valve Pos parameter specifies the valve position that will trigger the next unit to come on line, and the Next Off Valve Pos parameter specifies the valve position that will trigger the next unit go off-line.

  • Page 92: Troubleshooting

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 8: WATER HEATER MANAGEMENT 8.9 TROUBLESHOOTING TABLE 8.9: WHM Troubleshooting FAULT INDICATION PROBABLE CAUSE CORRECTIVE ACTION Manager LEDs are Two Edge Controllers Check the WHM Mode entries in the units flashing on 2 have their WHM Mode which have their displays flashing.

  • Page 93: Sequencing Valve Operating Characteristics

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 8: WATER HEATER MANAGEMENT Figure 8-17: Actuator PC Board Components NOTE: DO NOT press Auto-Stroke (Reset) button. Doing so may alter actuator calibration. Depress and hold brass clutch button to manually rotate valve. C A U T I O N ! Power must be removed from the Actuator prior to attempting to manual override.

  • Page 94: Section 9: O 2 Trim Operation

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 9: O2 TRIM OPERATION SECTION 9: O TRIM OPERATION 9.1 O TRIM INTRODUCTION Advanced combustion control systems need to maintain precise air/fuel ratios to maximize efficiency. Gas Water Heaters often deviate from the ideal air-fuel ratio due to environmental variations such as humidity, atmospheric pressure, filter dust loading, delivered gas energy content and other factors.

  • Page 95: Operation Details

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 9: O2 TRIM OPERATION 9.2 OPERATION DETAILS During operation, the O Trim system will adjust the command voltage sent to the combustion air blower within a limited range. The amount of voltage trim depends on the error between the desired O % (target %) and the current reading of the O sensor (O...

  • Page 96: O2 Sensor Calibration

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 9: O2 TRIM OPERATION 9.3 O2 SENSOR CALIBRATION sensor calibration can be initiated by pressing the Calibrate button on the Edge’s O2 Sensor screen (Main Menu → Calibration → Input/Output → O2 Sensor). Connect the combustion analyzer to the exhaust to perform the O sensor calibration.
  • Page 97 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 9: O2 TRIM OPERATION Figure 9-5: O2 Trim Parameters Screen • O2 Trim Status: Displays the current status of O Trim operation. Figure 9-6: O2 Trim Status Screen For more information, see the Edge Controller Manual (OMM-0161, GF-213), Section 6.6.1. OMM-0153_A •...
  • Page 98 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 9: O2 TRIM OPERATION CEN2000 O Trim Values MENU ITEM Minimum Maximum Default Settle Time 120 Sec 20 Sec Trim Gain 0.250 Max Tries 5.6% 5.6% Target 5.8% (must be 5.6% between O 5.6% Upper &...

  • Page 99: Trim Maintenance And Troubleshooting

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 9: O2 TRIM OPERATION TRIM MAINTENANCE AND TROUBLESHOOTING The O Trim system depends on the O sensor. It is recommended that you inspect the oxygen sensor for accuracy every 12 months by comparing it to a sensor reading from a properly calibrated flue analyzer.
  • Page 100 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 9: O2 TRIM OPERATION The Edge Controller displays following statuses in the O Trim Status parameter on the Advanced Setup → Performance → O Trim → O Trim Status screen. Trim Operation Interruption Errors Status Messages Description Action...
  • Page 101 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 9: O2 TRIM OPERATION OMM-0153_A • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 8/25/2022 Page 101 of 131...

  • Page 102: Section 10: Troubleshooting

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 10: TROUBLESHOOTING SECTION 10: TROUBLESHOOTING 10.1 INTRODUCTION This section is intended to aid service/maintenance personnel in isolating the cause of a fault in your CENTURION Water Heater. The troubleshooting procedures below are presented in tabular form on the following pages.
  • Page 103 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 10: TROUBLESHOOTING Centurion Troubleshooting Procedures Fault Probable Causes Corrective Action Blower stopped running due Check combustion blower for signs of excessive heat to thermal or current or high current drain that may trip thermal or overload.
  • Page 104 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 10: TROUBLESHOOTING Centurion Troubleshooting Procedures Fault Probable Causes Corrective Action Inspect the inlet to the combustion blower including Blocked blower inlet or inlet any ductwork leading up to the combustion blower ductwork. for signs of blockage. During the start sequence, verify that 24 VAC is No voltage to Blocked Inlet present between each side of the switch and...
  • Page 105 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 10: TROUBLESHOOTING Centurion Troubleshooting Procedures Fault Probable Causes Corrective Action Direct drive signal is not Check I/O Box to ensure signal is hooked up. present: • Hook up if not installed. • Not yet installed. •...
  • Page 106 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 10: TROUBLESHOOTING Centurion Troubleshooting Procedures Fault Probable Causes Corrective Action The Heat Demand Relays on the Ignition/Stepper (IGST) Press CLEAR button and restart the unit. If the fault HEAT board failed to activate persists, replace Ignition/Stepper (IGST) Board.
  • Page 107 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 10: TROUBLESHOOTING Centurion Troubleshooting Procedures Fault Probable Causes Corrective Action Communication fault has occurred between the PMC Press CLEAR button and restart unit. If fault IGN BOARD board and Ignition/Stepper persists, contact qualified Service Personnel. COMM (IGST) board.
  • Page 108 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 10: TROUBLESHOOTING Centurion Troubleshooting Procedures Fault Probable Causes Corrective Action If there are two external wires on these terminals check any Energy Management system to see if they Energy Management System have the units disabled (a jumper may be does not have unit enabled.
  • Page 109 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 10: TROUBLESHOOTING Centurion Troubleshooting Procedures Fault Probable Causes Corrective Action Switch wired incorrectly. If the switch is wired correctly, replace the switch. Check DS1 & DS2 LEDs on Power Supply Board. If Defective Power Supply they are not steady ON, replace Power Supply Board or fuse.
  • Page 110 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 10: TROUBLESHOOTING Centurion Troubleshooting Procedures Fault Probable Causes Corrective Action Defective Flame Detector. Replace Flame Detector. Check open/close indicator window of Safety Shut- SSOV not fully closed. Off Valve (SSOV) and ensure that the SSOV is fully closed.

  • Page 111: Additional Faults Without Specific Fault Messages

    Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 10: TROUBLESHOOTING Centurion Troubleshooting Procedures Fault Probable Causes Corrective Action Defective Air/Fuel Valve Replace stepper motor. stepper motor. Check DS1 & DS2 LEDs on Power Supply Board. If Defective Power Supply they are not steady ON, replace Power Supply Board or fuse.
  • Page 112 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 10: TROUBLESHOOTING Figure 10-1: Gas Train Component Locations (P/N 22362C Shown) Figure 10-2: Intake Manifold and Components OMM-0153_A • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 8/25/2022 Page 112 of 131...
  • Page 113 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 10: TROUBLESHOOTING Figure 10-3: SSOV Actuator with Gas Pressure Adjustment (SKP25) OMM-0153_A • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 8/25/2022 Page 113 of 131...
  • Page 114 Centurion Water Heater- Edge [ii]: Install-Operation-Service SECTION 10: TROUBLESHOOTING (This page intentionally blank) OMM-0153_A • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 8/25/2022 Page 114 of 131...

  • Page 115: Appendix A - Dimensions And Clearance

    Centurion Water Heater- Edge [ii]: Install-Operation-Service APPENDIX A – DIMENSIONS AND CLEARANCE APPENDIX A – DIMENSIONS AND CLEARANCE CENTURION 2000 Dimension OMM-0153_A • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 8/25/2022 Page 115 of 131...
  • Page 116 Centurion Water Heater- Edge [ii]: Install-Operation-Service APPENDIX A – DIMENSIONS AND CLEARANCE CENTURION 2000 Clearance OMM-0153_A • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 8/25/2022 Page 116 of 131...

  • Page 117: Appendix B - Wiring Diagrams

    Centurion Water Heater- Edge [ii]: Install-Operation-Service APPENDIX B – WIRING DIAGRAMS APPENDIX B – WIRING DIAGRAMS CENTURION 2000 – Drawing Number: 68106 rev A Sheet 1 of 4 OMM-0153_A • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 8/25/2022 Page 117 of 131...
  • Page 118 Centurion Water Heater- Edge [ii]: Install-Operation-Service APPENDIX B – WIRING DIAGRAMS CENTURION 2000 – Drawing Number: 68106 rev A Sheet 2 of 4 OMM-0153_A • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 8/25/2022 Page 118 of 131...
  • Page 119 Centurion Water Heater- Edge [ii]: Install-Operation-Service APPENDIX B – WIRING DIAGRAMS Centurion 2000 – Drawing Number: 68106 rev A Sheet 3 of 4 OMM-0153_A • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 8/25/2022 Page 119 of 131...
  • Page 120 Centurion Water Heater- Edge [ii]: Install-Operation-Service APPENDIX B – WIRING DIAGRAMS CENTURION 2000 – Drawing Number: 68106 rev A Sheet 4 of 4 OMM-0153_A • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 8/25/2022 Page 120 of 131...

  • Page 121: Appendix C - Centurion 2000 Part List

    Centurion Water Heater- Edge [ii]: Install-Operation-Service APPENDIX C – CENTURION 2000 Part List APPENDIX C – CENTURION 2000 PART LIST Item # Part # Description EXHAUST MANIFOLD 39237 Exhaust Manifold 81165 Exhaust Manifold Seal 9-22 Pipe Plug - Exhaust Manifold 92094 Drain Valve: 3/4 “...
  • Page 122 Centurion Water Heater- Edge [ii]: Install-Operation-Service APPENDIX C – CENTURION 2000 Part List Item # Qty Part # Description Temperature Sensor, Dual 61056 Thermocouple 122843  Low Water Cutoff 64081 ECU (for O Sensor) 59178 Vent: Air 1/8 NPT 123863 Valve: Ball 1/8"...
  • Page 123 Centurion Water Heater- Edge [ii]: Install-Operation-Service APPENDIX C – CENTURION 2000 Part List ENCLOSURE PANELS Item # Qty Part # Description 30156 TOP PANEL: FRONT 30157 TOP PANEL: BACK 37148 BACK PANEL: LEFT POWER PANEL 37149 BACK PANEL: RIGHT 39184-1 8"...
  • Page 124 Centurion Water Heater- Edge [ii]: Install-Operation-Service APPENDIX C – CENTURION 2000 Part List POWER PANEL P/N 69315-7 Item # Qty Part # Description 30170 Power Panel 69141 DIN Rail End Stop 65213 Terminal Block, Yellow 65194 Terminal Block, Red 65247 24 VDC Power Supply, 2.5 A 65231 12 V Power Supply, 5 A...
  • Page 125 Centurion Water Heater- Edge [ii]: Install-Operation-Service APPENDIX C – CENTURION 2000 Part List CENTURION 2000 Spare Parts Kits Part # Description 123540 Ball Valve, External 2” 24441 Condensate Trap 92605-5 T&P Relief Valve, pressure setting 150 psi, temperature setting 210°F CENTURION 2000 Wiring Harnesses (not shown) Part # Description...
  • Page 126 Centurion Water Heater- Edge [ii]: Install-Operation-Service APPENDIX C – CENTURION 2000 Part List CENTURION 2000 Standard Gas Train – NATURAL GAS P/N 22362C Item Part # Description Item Part # Description Gas Pressure Switch, 1-20 123542 Flange 2" 125# 2" NPT 60032 W.C.
  • Page 127 Centurion Water Heater- Edge [ii]: Install-Operation-Service APPENDIX C – CENTURION 2000 Part List CENTURION 2000 Recirculation Loop P/N 22384C Item Qty Part # Description 69371 Circulator Pump 95037 Flange, Taco 97174 Reducing Tee, 1½” to ¾” NPT 92060 ¾” Drain Valve 92125-1.5 Ball Valve, Full Port 1.5”...
  • Page 128 Centurion Water Heater- Edge [ii]: Install-Operation-Service APPENDIX C – CENTURION 2000 Part List CENTURION 2000 Burner Assembly P/N 26024C Item Qty Part # Description 46063 Burner 81185 Burner Release Gasket: Lower 81180 Burner Gasket 81173 Release Gasket 43091 Blower Plenum 81048 Gasket: Flame Rod Low NO 24356-1...

  • Page 129: Appendix D - Temperature Sensor Resistance/Voltage Chart

    Centurion Water Heater- Edge [ii]: Install-Operation-Service APPENDIX D – TEMPERATURE SENSOR RESISTANCE/VOLTAGE CHART APPENDIX D – TEMPERATURE SENSOR RESISTANCE/VOLTAGE CHART CENTURION units have PT-1000 temperature sensors by default. However, users are allowed to change to the older, Balco sensors. PT-1000 Temperature Sensor Resistance Chart Temperature Sensor Resistance (Ohms) °F...

  • Page 130: Notes

    Centurion Water Heater- Edge [ii]: Install-Operation-Service CHANGE LOG NOTES: OMM-0153_A • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 8/25/2022 Page 130 of 131...

  • Page 131: Change Log

    Centurion Water Heater- Edge [ii]: Install-Operation-Service CHANGE LOG Change Log: Date Description Changed By 8/25/2022 Rev A: Initial Release DWBarron © PVI Industries, LLC, 2022 OMM-0153_A • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 8/25/2022 Page 131 of 131...

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