Watts PVi CEN 1600 Installation, Operation And Maintenance Manual
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Watts PVi CEN 1600 Installation, Operation And Maintenance Manual

Watts PVi CEN 1600 Installation, Operation And Maintenance Manual

Centurion water heaters with edge controller
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Installation, Operation and Maintenance Manual
Centurion Water Heaters
with Edge
Natural Gas and Propane Gas Modulating &
Condensing Water Heater
Models CEN 2000 & CEN 1600
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_E
5/11/2023
®
[ii] Controller
@2023 PVI, a Watts Brand

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  • Page 1 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. @2023 PVI, a Watts Brand • OMM-0153_E 5/11/2023...

  • Page 2: Table Of Contents

    CENTURION Installation, Operation & Maintenance Manual TABLE OF CONTENTS TABLE OF CONTENTS ........................2 FOREWORD SECTION 1: SAFETY PRECAUTIONS .....................8 1.1 WARNINGS & CAUTIONS ....................8 1.2 EMERGENCY SHUTDOWN ....................9 1.3 PROLONGED SHUTDOWN ....................9 1.4 IMPORTANT – REQUIREMENTS FOR MASSACHUSETTS INSTALLATIONS ....10 SECTION 2: INSTALLATION .......................11 2.1 RECEIVING THE UNIT .......................11 2.2 UNPACKING THE UNIT .....................11...
  • Page 3 CENTURION Installation, Operation & Maintenance Manual 5.3 COMBUSTION CALIBRATION ...................42 5.4 OVER-TEMPERATURE LIMIT SWITCHES ................47 5.5 TEMPERATURE CONTROL CALIBRATION ..............49 5.6 MODES OF OPERATION ....................51 SECTION 6: SAFETY DEVICE TESTING ..................53 6.1 TESTING SAFETY DEVICES .....................53 6.2 LOW GAS PRESSURE TEST .....................54 6.3 HIGH GAS PRESSURE TEST ....................55 6.4 LOW WATER LEVEL FAULT TEST ..................56 6.5 WATER TEMPERATURE FAULT TEST ................57...
  • Page 4 CENTURION Installation, Operation & Maintenance Manual 8.4 WHM STATUS DISPLAYS ....................74 8.5 WATER HEATER MANAGEMENT ALTERNATING STATUS DISPLAYS......74 8.6 WHM PARAMETERS......................75 8.7 WHM HARDWARE INSTALLATION & SET-UP INSTRUCTIONS........80 8.8 WHM PROGRAMMING & START-UP ................84 8.9 TROUBLESHOOTING ......................86 8.10 SEQUENCING VALVE DESCRIPTION & OPERATION ...........86 SECTION 9: O TRIM OPERATION .....................88 9.1 OPERATION DETAILS .......................88...

  • Page 5: Foreword

    CENTURION Installation, Operation & Maintenance Manual 0 FOREWORD FOREWORD The PVI Centurion modulating and condensing water heater represents a true industry advance to meet the needs of today's energy and environmental concerns. Designed for use with natural gas or propane gas in any closed loop hydronic system, the Centurion’s modulating capability relates energy input directly to fluctuating system loads.
  • Page 6 CENTURION Installation, Operation & Maintenance Manual 0 FOREWORD Technical Terminology Meanings 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 Installation, Operation & Maintenance Manual 0 FOREWORD Technical Terminology Meanings 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 Installation, Operation & Maintenance Manual SECTION 1: 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 Installation, Operation & Maintenance Manual SECTION 1: 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 - Requirements For Massachusetts Installations

    CENTURION Installation, Operation & Maintenance Manual SECTION 1: SAFETY PRECAUTIONS 1.4 Important – Requirements for Massachusetts Installations ……………….[Extracted Information From 248 CMR 5.08 (2) ]………………… Installations within the Commonwealth of Massachusetts must conform to the following requirements: • Water Heater must be installed by a plumber or a gas fitter licensed within the Commonwealth of Massachusetts. •...

  • Page 11: Section 2: Installation

    CENTURION Installation, Operation & Maintenance Manual 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 the Centurion 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 12 CENTURION Installation, Operation & Maintenance Manual SECTION 2: INSTALLATION 2.3.1 Installation Clearances The unit must be installed with the prescribed clearances for service as shown in Figure 2-1. The minimum required clearance dimensions are listed below for all models. If Local Building Codes require additional clearances, those codes shall take precedence.
  • Page 13 CENTURION Installation, Operation & Maintenance Manual SECTION 2: INSTALLATION 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 14: Lifting Provisions

    CENTURION Installation, Operation & Maintenance Manual SECTION 2: INSTALLATION The following table specifies the minimum pit depth for the Condensate Neutralizer Tank (P/N 89030C) if the unit is installed on a 4" pad, and the pad height if the Neutralizer Tank must be installed on the floor;...

  • Page 15: Piping Connections

    CENTURION Installation, Operation & Maintenance Manual SECTION 2: INSTALLATION 2.5 Piping Connections Make sure the mating surfaces are thoroughly clean, before connecting the hot water outlet and return-water inlets to building piping. Centurion Water Heaters have the following inlets and outlets: •...
  • Page 16 CENTURION Installation, Operation & Maintenance Manual 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 17 CENTURION Installation, Operation & Maintenance Manual 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 18: Temperature And Pressure Relief Valve Installation

    CENTURION Installation, Operation & Maintenance Manual SECTION 2: INSTALLATION BUILDING RECIRCULATION INLET (WARMER WATER) COLD WATER INLET (COOLER WATER) Figure 2-8: Dual Inlets 2.5.4 Sequencing Isolation Valve Centurion Water Heaters with Water Heater Management (WHM) will arrive with the actuator- controlled Sequencing Isolation Valve, packed separately within the shipping container.

  • Page 19: Condensate Drain And Piping

    CENTURION Installation, Operation & Maintenance Manual SECTION 2: INSTALLATION 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. See below for information on the condensate drain and piping for the various models.

  • Page 20: Gas Supply Piping

    CENTURION Installation, Operation & Maintenance Manual SECTION 2: INSTALLATION INTEGRAL ADAPTOR AND THUMBSCREW COMBUSTION ANALYZER PROBE PORT CONDENSATE TRAP COVER (P/N 24441C) THUMB SCREWS (4 each) 3/4” NPT NIPPLES EXHAUST MANIFOLD HOSE CLAMP 1” (2.54 cm) DIAM. HOSE 4” (10cm) 4-8”...
  • Page 21 CENTURION Installation, Operation & Maintenance Manual SECTION 2: INSTALLATION 2.8.1 Gas Supply Specifications Centurion Water Heaters require a stable natural gas or propane input pressure that complies with the allowable gas inlet pressure range in the tables below: CEN 2000/1600 Allowable NATURAL GAS Inlet Pressure for Standard and DBB Gas Trains Minimum Maximum STANDARD GAS TRAINS...

  • Page 22: Ac Electrical Power Wiring

    CENTURION Installation, Operation & Maintenance Manual SECTION 2: INSTALLATION On all Centurion models it is strongly recommended that the pressure regulator be installed a minimum distance of 10 pipe diameters between the pressure regulator and the nearest downstream fittings (an elbow or the unit itself), and a minimum of 5 pipe diameters between the pressure regulator and any upstream fitting, such as elbow or shutoff valve, as shown below.

  • Page 23: Field Control Wiring - I/O Board

    CENTURION Installation, Operation & Maintenance Manual SECTION 2: INSTALLATION Each unit must be connected to a dedicated electrical circuit. NO OTHER DEVICES SHOULD BE ON THE SAME ELECTRICAL CIRCUIT AS THE WATER HEATER. A switch must be installed on the electrical supply line, external to the unit, in an easily accessible location to disconnect electrical service quickly and safely.
  • Page 24 CENTURION Installation, Operation & Maintenance Manual SECTION 2: INSTALLATION these features can be made on the Secondary Power Panel (see Figure 2-14) and the Input/Output (I/O) board located behind the unit’s front panel (see Figure 2-15). OXYGEN SENSOR 4-20mA OUT PUMP RELAY BLOCKED FLUE BLOWER RELAY...
  • Page 25 CENTURION Installation, Operation & Maintenance Manual 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 26 CENTURION Installation, Operation & Maintenance Manual SECTION 2: INSTALLATION Connector Strip J4 Terminals Pin # Name Description In a multiple application configuration, connection to the 2 loop supply Supply Loop 2 header temperature sensor. Sensor Ground Ground connection for Supply Loop 2 In a multiple application environment, connection to the 2 loop return Return Loop 2...
  • Page 27 CENTURION Installation, Operation & Maintenance Manual 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 28: Flue Gas Vent Installation

    CENTURION Installation, Operation & Maintenance Manual 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 29: Combustion Air

    CENTURION Installation, Operation & Maintenance Manual SECTION 2: INSTALLATION Figure 2-17: Fasten the Three Screws 120 Degrees Apart 2.11.2 Massachusetts Installations For Massachusetts installations, the following companies provide vent systems that conform to all applicable requirements for installations within the Commonwealth of Massachusetts: Selkirk Corporation - Heatfab Division Watertown Supply 130 Industrial Blvd.

  • Page 30: Sequencing Isolation Valve Installation

    CENTURION Installation, Operation & Maintenance Manual SECTION 2: INSTALLATION 2.12.1 Ducted Combustion Air For ducted combustion air installations, the air ductwork must be attached directly to the air inlet connection on the sheet metal enclosure. Consult the Centurion Venting and Combustion Air Design Guide, TAG-0102 when designing combustion air ducting.

  • Page 31: Water Heater Pump Relay

    CENTURION Installation, Operation & Maintenance Manual SECTION 2: INSTALLATION Sequencing Isolation Valve Figure 2-18: Sequencing Valve 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 32: Section 3: Edge Controller Operation

    CENTURION Installation, Operation & Maintenance Manual 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 33: Login And Password Entry

    CENTURION Installation, Operation & Maintenance Manual 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 34: Section 4: Start Sequence

    CENTURION Installation, Operation & Maintenance Manual 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 35 CENTURION Installation, Operation & Maintenance Manual 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 36 CENTURION Installation, Operation & Maintenance Manual 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 37: Start/Stop Levels

    CENTURION Installation, Operation & Maintenance Manual SECTION 4: START SEQUENCE TO BLOWER STEPPER MOTOR IGNITION VALVE POSITION DIAL AT 25% to 35% AIR IN Figure 4-5: Air/Fuel Valve in Ignition Position 8. Up to 4 seconds are allowed for ignition to be detected. The ignition circuit is turned off one second after flame is detected.

  • Page 38: Start/Stop Levels - Air/Fuel & Energy Input

    CENTURION Installation, Operation & Maintenance Manual SECTION 4: START SEQUENCE 4.3 Start/Stop Levels – Air/Fuel & Energy Input The tables below show the relationship between the energy input and Air/Fuel Valve position for Natural Gas. CEN 2000 Air/Fuel Valve Position NATURAL GAS Valve Position Air/Fuel Valve...
  • Page 39 CENTURION Installation, Operation & Maintenance Manual SECTION 4: START SEQUENCE The tables below show the relationship between the energy input and Air/Fuel Valve position for Propane gas. CEN 2000 Air/Fuel Valve Position PROPANE Valve Position Air/Fuel Valve Energy Input Water Heater Energy on Controller Position (% Open) (Btu/Hr)

  • Page 40: Section 5: Initial Start-Up

    CENTURION Installation, Operation & Maintenance Manual 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 41: Tools & Instruments For Combustion Calibration

    CENTURION Installation, Operation & Maintenance Manual 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 42: Combustion Calibration

    CENTURION Installation, Operation & Maintenance Manual 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 43 CENTURION Installation, Operation & Maintenance Manual 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 calibration voltage to the blower and thus interfere with each other.
  • Page 44 CENTURION Installation, Operation & Maintenance Manual 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 45 CENTURION Installation, Operation & Maintenance Manual 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 Section 5.2.3) and allow enough time for the combustion analyzer reading to stabilize. 15.
  • Page 46 CENTURION Installation, Operation & Maintenance Manual SECTION 5: INITIAL START-UP 22. Repeat Step 15, 16 and 19 at that position and the rest of the valve positions in the tables below. The O , NOx and CO should stay within the ranges shown. NATURAL GAS Final Valve Positions for CEN 2000 Standard NOx Valve Position...

  • Page 47: Over-Temperature Limit Switches

    CENTURION Installation, Operation & Maintenance Manual SECTION 5: INITIAL START-UP NOTE: If NOx readings exceed the target values above, increase the O level up to 1% higher than the listed calibration range shown in the table. Record the increased O value on the Combustion Calibration sheet.
  • Page 48 CENTURION Installation, Operation & Maintenance Manual SECTION 5: INITIAL START-UP Figure 5-8: Over-Temperature Limit Switches 5.4.1 Adjusting The Automatic Reset Limit Switch Temperature 1. Power unit ON and remove the front panel to expose the Over-Temperature Limit switches. 2. Press the Automatic Reset Limit Switch’s SET button: SP appears in the display. 3.

  • Page 49: Temperature Control Calibration

    CENTURION Installation, Operation & Maintenance Manual SECTION 5: INITIAL START-UP 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. The display shows the temperature in Celsius and °F changes to °C. 2.
  • Page 50 CENTURION Installation, Operation & Maintenance Manual 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 51: Modes Of Operation

    CENTURION Installation, Operation & Maintenance Manual 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 52 CENTURION Installation, Operation & Maintenance Manual 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 53: Section 6: Safety Device Testing

    CENTURION Installation, Operation & Maintenance Manual 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 54: Low Gas Pressure Test

    CENTURION Installation, Operation & Maintenance Manual SECTION 6: SAFETY DEVICE TESTING 6.2 Low Gas Pressure Test To simulate a low gas pressure fault: 1. Remove the front panel from the Water Heater to access the gas train components. 2. Make sure the 1/4" ball valve located at the inlet side of the SSOV is closed. 3.

  • Page 55: High Gas Pressure Test

    CENTURION Installation, Operation & Maintenance Manual 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 56: Low Water Level Fault Test

    CENTURION Installation, Operation & Maintenance Manual 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 57: Water Temperature Fault Test

    CENTURION Installation, Operation & Maintenance Manual 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 58: Interlock Tests

    CENTURION Installation, Operation & Maintenance Manual 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 59: Air Flow Fault Tests-Blower Proof & Blocked Inlet Switches

    CENTURION Installation, Operation & Maintenance Manual SECTION 6: SAFETY DEVICE TESTING 6. Set the Controller’s Enable/Disable switch to Enable to start the unit. 7. The unit should purge and light the Pilot flame and then shut down after reaching the main Burner Ignition cycle and display Flame Loss During Ign.
  • Page 60 CENTURION Installation, Operation & Maintenance Manual SECTION 6: SAFETY DEVICE TESTING Figure 6-8: Blower Proof Switch 4. Set the Controller’s Enable/Disable switch to Enable and wait for the Water Heater to go into the Purge sequence. 5. After about 5 seconds, with air flowing into the combustion chamber, slowly turn the dial clock-wise (to higher value) until the unit trips off with an Air Flow Fault During Purge message.

  • Page 61: Ssov Proof Of Closure Switch Check

    CENTURION Installation, Operation & Maintenance Manual SECTION 6: SAFETY DEVICE TESTING 6. When the Controller gets into the ignition phase, it will show Ignition Trial. At that point attach the alligator clip (Figure 6-9) to any bare metal surface or ground. The Controller displays Flame Proven and begins to ramp up to 100% fire rate.

  • Page 62: Check Ignition Switch Open During Ignition

    CENTURION Installation, Operation & Maintenance Manual SECTION 6: SAFETY DEVICE TESTING Figure 6-10: Air/Fuel Valve Cover Location 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.

  • Page 63: Safety Pressure Relief Valve Test

    CENTURION Installation, Operation & Maintenance Manual SECTION 6: SAFETY DEVICE TESTING Figure 6-11: Air/Fuel Purge and Ignition Locations 6.12 Safety Pressure Relief Valve Test Test the safety Pressure Relief Valve in accordance with ASME Water Heater and Pressure Vessel Code, Section VI. OMM-0153_E •...

  • Page 64: Section 7: Maintenance

    CENTURION Installation, Operation & Maintenance Manual 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 65: Igniter-Injector

    CENTURION Installation, Operation & Maintenance Manual 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 CEN 2000/1600 12 Month (P/N 58025-25) and 24 Month (P/N 58025-26 and 58025-27) Maintenance Kits.

  • Page 66: Flame Detector

    CENTURION Installation, Operation & Maintenance Manual 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 67: Safety Device Testing

    CENTURION Installation, Operation & Maintenance Manual 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 68: Air Filter Cleaning And Replacement

    CENTURION Installation, Operation & Maintenance Manual SECTION 7: MAINTENANCE If your system includes a condensate neutralizer, the active ingredient must be periodically replaced. Figure 7-6: Condensate Trap and Neutralizer 7.8 Air Filter Cleaning and Replacement The Water Heater’s air filter should be Cleaned every 12 months, and Replaced after 24 months if it shows signs of deterioration.

  • Page 69: Shutting Water Heater Down For Extended Period (One Year Or More)

    CENTURION Installation, Operation & Maintenance Manual SECTION 7: MAINTENANCE 7.9 Shutting Water Heater Down for Extended Period (One Year or More) 1. Set Enable/Disable switch on the front panel to the Disable position. 2. Disconnect AC power from the unit. 3.

  • Page 70: Recommended Spare Parts

    CENTURION Installation, Operation & Maintenance Manual SECTION 7: MAINTENANCE Recommended Periodic Testing ITEM FREQUENCY ACTION BY REMARKS Check flame strength in the Edge Controller’s Unit Status Flame signal strength Weekly Operator screen. Low water level cut off Weekly Operator See Section 6.4: Low Water Level Fault Test. and alarm Perform a slow drain test in accordance with ASME Water Slow drain test...

  • Page 71: Section 8: Water Heater Management

    CENTURION Installation, Operation & Maintenance Manual 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 72: Whm Principles Of Operation

    CENTURION Installation, Operation & Maintenance Manual 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 73 CENTURION Installation, Operation & Maintenance Manual 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 74: Whm Status Displays

    CENTURION Installation, Operation & Maintenance Manual 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 75: Whm Parameters

    CENTURION Installation, Operation & Maintenance Manual 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 76 CENTURION Installation, Operation & Maintenance Manual 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 77 CENTURION Installation, Operation & Maintenance Manual 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 78 CENTURION Installation, Operation & Maintenance Manual 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 79 CENTURION Installation, Operation & Maintenance Manual 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 80: Whm Hardware Installation & Set-Up Instructions

    CENTURION Installation, Operation & Maintenance Manual 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 81 CENTURION Installation, Operation & Maintenance Manual 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 82 CENTURION Installation, Operation & Maintenance Manual 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 ensuring that the 5-pin Molex connectors on the units are connected to the corresponding connectors on the valves.
  • Page 83 CENTURION Installation, Operation & Maintenance Manual SECTION 8: WATER HEATER MANAGEMENT Reference SD-P-1278 Figure 8-13: WHM Network Wiring Diagram OMM-0153_E • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 5/11/2023 Page 83 of 124...

  • Page 84: Whm Programming & Start-Up

    CENTURION Installation, Operation & Maintenance Manual 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 85 CENTURION Installation, Operation & Maintenance Manual 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 86: Troubleshooting

    CENTURION Installation, Operation & Maintenance Manual 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 87 CENTURION Installation, Operation & Maintenance Manual SECTION 8: WATER HEATER MANAGEMENT The components on the PC board include DIP switches which are preset at the factory and should not be changed unless instructed to do so. Figure 8-16: Actuator PC Board Components NOTE: DO NOT press Auto-Stroke (Reset) button.

  • Page 88: Section 9: O 2 Trim Operation

    CENTURION Installation, Operation & Maintenance Manual SECTION 9: O2 TRIM OPERATION SECTION 9: O TRIM OPERATION 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 89: O 2 Sensor Calibration

    CENTURION Installation, Operation & Maintenance Manual SECTION 9: O2 TRIM OPERATION Figure 9-2 graphically shows the functional logic of the O Trim system and how the blower voltage (BV), O Limits, and air/fuel ratio interact during an O Trim operation. The limits are fixed presets within the controller.

  • Page 90: Trim Menu Values And Defaults

    CENTURION Installation, Operation & Maintenance Manual SECTION 9: O2 TRIM OPERATION Figure 9-3: O Sensor Calibration Screen 9.3 Trim Menu Values and Defaults Trim screens, available from Main Menu → Advanced Setup → There are three O Performance → O Trim.
  • Page 91 CENTURION Installation, Operation & Maintenance Manual SECTION 9: O2 TRIM OPERATION Figure 9-5: O Trim Parameters Screen • Trim Status: Displays the current status of O Trim operation. Figure 9-6: O Trim Status Screen For more information, see the Edge Controller Manual (OMM-0161, GF-213), Section 6.6.1. OMM-0153_E •...
  • Page 92 CENTURION Installation, Operation & Maintenance Manual SECTION 9: O2 TRIM OPERATION CEN 2000/ O Trim Values MENU ITEM Minimum Maximum Default Settle Time 120 Sec 20 Sec Trim Gain 0.250 Max Tries 5.6% 5.6% 5.8% Target 5.6% 5.6% (must be between O Upper &...
  • Page 93 CENTURION Installation, Operation & Maintenance Manual SECTION 9: O2 TRIM OPERATION (must be at 2.5% 5.5% 5.1% least 1% lower 5.1% than O Upper) 2.5% 5.5% 5.1% 5.1% 100% 2.5% 5.5% 5.1% 5.5% 8.5% 6.1% 5.5% 8.5% 6.1% Upper 5.5% 8.5% 6.1% 5.5%...
  • Page 94 CENTURION Installation, Operation & Maintenance Manual SECTION 9: O2 TRIM OPERATION CEN 1600 O Trim Values (Propane) MENU ITEM Minimum Maximum Default Settle Time 120 Sec 20 Sec Trim Gain 0.250 Max Tries 5.5% 5.5% Target 5.5% 5.5% (must be between O 5.5% Upper &...
  • Page 95 CENTURION Installation, Operation & Maintenance Manual SECTION 9: O2 TRIM OPERATION CEN 1600 O Trim Adjustment Range (Natural Gas) BLOWER VOLTAGE (Volts) CALIBRATION POINT Minimum Maximum Default 2.20 3.20 2.50 3.20 4.30 3.60 3.60 4.90 4.10 3.70 5.30 4.50 4.10 5.60 4.85 4.20...

  • Page 96: Trim Maintenance And Troubleshooting

    CENTURION Installation, Operation & Maintenance Manual 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 97 CENTURION Installation, Operation & Maintenance Manual 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 98: Section 10: Troubleshooting

    CENTURION Installation, Operation & Maintenance Manual 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 99 CENTURION Installation, Operation & Maintenance Manual 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 100 CENTURION Installation, Operation & Maintenance Manual 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 101 CENTURION Installation, Operation & Maintenance Manual 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 102 CENTURION Installation, Operation & Maintenance Manual SECTION 10: TROUBLESHOOTING Centurion Troubleshooting Procedures Fault Probable Causes Corrective Action Relay is activated when not Defective relay. Replace IGST Board. in Demand. Check combustion calibration using procedures in Poor combustion calibration. Section 5.4: Combustion Calibration of this guide. HIGH EXHAUST Carboned heat exchanger If exhaust temperature is greater than 200°F...
  • Page 103 CENTURION Installation, Operation & Maintenance Manual SECTION 10: TROUBLESHOOTING Centurion Troubleshooting Procedures Fault Probable Causes Corrective Action Start the unit. The Air/Fuel Valve should rotate to the purge (open) position. If the valve does not rotate at all or does not rotate fully open, check the Air/Fuel Valve not rotating.
  • Page 104 CENTURION Installation, Operation & Maintenance Manual SECTION 10: TROUBLESHOOTING Centurion Troubleshooting Procedures Fault Probable Causes Corrective Action Check transformer wiring, in AC Power Box, against Incorrect power supply the power box transformer wiring diagram to transformer wiring. ensure it is wired correctly. Measure gas pressure upstream of the SSOV Incorrect supply gas Actuator(s) with the unit firing.
  • Page 105 CENTURION Installation, Operation & Maintenance Manual SECTION 10: TROUBLESHOOTING Centurion Troubleshooting Procedures Fault Probable Causes Corrective Action Measure for 24 VAC from each side of the switch to No voltage present at ground. If 24 VAC is not present, refer fault to switch.
  • Page 106 CENTURION Installation, Operation & Maintenance Manual SECTION 10: TROUBLESHOOTING Centurion Troubleshooting Procedures Fault Probable Causes Corrective Action SSOV FAULT SSOV switch closed for 15 Replace actuator. DURING RUN seconds during run. SSOV relay failed on IGST Press CLEAR button and restart unit. If fault board.

  • Page 107: Additional Faults Without Specific Fault Messages

    CENTURION Installation, Operation & Maintenance Manual SECTION 10: TROUBLESHOOTING 10.2 Additional Faults Without Specific Fault Messages Refer to Table 12.2 to troubleshoot faults which may occur without a specific fault message being displayed. TABLE 12.2: Water Heater Troubleshooting with No Fault Message Displayed Observed Probable Causes Corrective Action...
  • Page 108 CENTURION Installation, Operation & Maintenance Manual SECTION 10: TROUBLESHOOTING Figure 10-2: Intake Manifold and Components Figure 10-3: SSOV Actuator with Gas Pressure Adjustment (SKP25) OMM-0153_E • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 5/11/2023 Page 108 of 124...

  • Page 109: Appendix A - Dimensions And Clearance

    CENTURION Installation, Operation & Maintenance Manual 0 APPENDIX A – DIMENSIONS AND CLEARANCE APPENDIX A – DIMENSIONS AND CLEARANCE Centurion Dimensions (CEN 2000 & CEN 1600) OMM-0153_E • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 5/11/2023 Page 109 of 124...
  • Page 110 CENTURION Installation, Operation & Maintenance Manual 0 APPENDIX A – DIMENSIONS AND CLEARANCE Centurion Clearances (CEN 2000 & CEN 1600) OMM-0153_E • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 5/11/2023 Page 110 of 124...

  • Page 111: Appendix B - Wiring Diagrams

    CENTURION Installation, Operation & Maintenance Manual 0 APPENDIX B – WIRING DIAGRAMS APPENDIX B – WIRING DIAGRAMS Centurion 2000 – Drawing Number: 68106 rev A Sheet 1 of 4 OMM-0153_E • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 5/11/2023 Page 111 of 124...
  • Page 112 CENTURION Installation, Operation & Maintenance Manual 0 APPENDIX B – WIRING DIAGRAMS Centurion 2000 – Drawing Number: 68106 rev A Sheet 2 of 4 OMM-0153_E • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 5/11/2023 Page 112 of 124...
  • Page 113 CENTURION Installation, Operation & Maintenance Manual 0 APPENDIX B – WIRING DIAGRAMS Centurion 2000 – Drawing Number: 68106 rev A Sheet 3 of 4 OMM-0153_E • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 5/11/2023 Page 113 of 124...
  • Page 114 CENTURION Installation, Operation & Maintenance Manual 0 APPENDIX B – WIRING DIAGRAMS Centurion 2000 – Drawing Number: 68106 rev A Sheet 4 of 4 OMM-0153_E • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 5/11/2023 Page 114 of 124...

  • Page 115: Appendix C - Centurion2000/1600 Parts List

    CENTURION Installation, Operation & Maintenance Manual 0 APPENDIX C – Centurion2000/1600 Parts List APPENDIX C – CENTURION2000/1600 PARTS 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 116 CENTURION Installation, Operation & Maintenance Manual 0 APPENDIX C – Centurion2000/1600 Parts 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 117 CENTURION Installation, Operation & Maintenance Manual 0 APPENDIX C – Centurion2000/1600 Parts List POWER PANEL WITH COVERS REMOVED 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...
  • Page 118 CENTURION Installation, Operation & Maintenance Manual 0 APPENDIX C – Centurion2000/1600 Parts List Centurion 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 24786 8”...
  • Page 119 CENTURION Installation, Operation & Maintenance Manual 0 APPENDIX C – Centurion2000/1600 Parts 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 120 CENTURION Installation, Operation & Maintenance Manual 0 APPENDIX C – Centurion2000/1600 Parts 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 121 CENTURION Installation, Operation & Maintenance Manual 0 APPENDIX C – Centurion2000/1600 Parts 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 122: Appendix D - Temperature Sensor Resistance/Voltage

    CENTURION Installation, Operation & Maintenance Manual 0 APPENDIX D – TEMPERATURE SENSOR RESISTANCE/VOLTAGE APPENDIX D – TEMPERATURE SENSOR RESISTANCE/VOLTAGE 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 123: Notes

    CENTURION Installation, Operation & Maintenance Manual 0 NOTES: NOTES: OMM-0153_E • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 5/11/2023 Page 123 of 124...
  • Page 124 CENTURION Installation, Operation & Maintenance Manual 0 NOTES: CHANGE LOG Date Description Changed By 5/11/2023 Rev A: Initial Release DWBarron 1/03/2023 Rev B: Removed mention of minimum flow requirement in 2.5.3 DWBarron 3/28/2023 Rev C: Updated table information DWBarron 4/14/2023 Rev D: Added propane info DWBarron 5/11/23...

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