Lochinvar ArmorX2 1.3 Service Manual
  1. Manuals
  2. Brands
  3. Lochinvar Manuals
  4. Water Heater
  5. ArmorX2 1.3
  6. Service manual
Lochinvar ArmorX2 1.3 Service Manual

Lochinvar ArmorX2 1.3 Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Service Manual
Models: 1.0, 1.3, and 1.5
This manual must only be
WARNING
used by a qualified heating
installer / service technician.
Read
including this manual and the
Armor X2 Installation and
Operation Manual, before
installing. Perform steps in
the order given. Failure to
comply could result in severe
personal injury, death, or
substantial property damage.
Save this manual for future reference.
AWX2-SER Rev A
all
instructions,

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the ArmorX2 1.3 and is the answer not in the manual?

Questions and answers

Related Manuals for Lochinvar ArmorX2 1.3

Summary of Contents for Lochinvar ArmorX2 1.3

  • Page 1 AWX2-SER Rev A Service Manual Models: 1.0, 1.3, and 1.5 This manual must only be WARNING used by a qualified heating installer / service technician. Read instructions, including this manual and the Armor X2 Installation and Operation Manual, before installing. Perform steps in the order given.

  • Page 2: Table Of Contents

    Contents Parameter Table............10-11 CONTENTS ................ 2 Viewable and Changeable Control Parameters ..12-31 Hazard Definitions .............. 2 2. MAINTENANCE PLEASE READ BEFORE PROCEEDING ......2 Maintenance and Annual Startup ........ 32-36 Handling Ceramic Fiber Materials ........3 3. TROUBLESHOOTING When servicing water heater ........

  • Page 3: Handling Ceramic Fiber Materials

    Service Manual Please read before proceeding Installer – Read all instructions, When calling or writing about the water heater WARNING NOTICE including this manual and the Armor X2 – Please have the water heater model and serial Water Heater Installation and Operation number from the water heater rating plate.

  • Page 4: What Is In This Manual

    Service Manual What is in this manual? Service Maintenance • Service and maintenance schedules The Armor X2 water heater display • Address reported problems • Inspect water heater area and water heater interior • Display panel readout, buttons and their functions •...
  • Page 5 Service Manual Service The Armor X2 display...

  • Page 6: Control Inputs

    Service Manual Service Control inputs SECONDARY SMART CONTROL LOW VOLTAGE MODULE CONNECTION BOARD PRIMARY SMART CONTROL MODULE SEQUENCER / BUILDING MANAGEMENT SYSTEM HW TANK SENSOR O-TEMP HEAT EXCHANGER SWITCH PRIMARY/SECONDARY INLET ENABLE TEMPERATURE SENSOR O-TEMP PRIMARY/SECONDARY OUTLET HEAT EXCHANGER SWITCH TEMPERATURE SENSOR FLOW SWITCH BLOCKED DRAIN SWITCH...

  • Page 7: Control Outputs

    Service Manual Service (continued) Control outputs SECONDARY SMART TOUCH LOW VOLTAGE CONTROL MODULE CONNECTION BOARD PRIMARY SMART TOUCH CONTROL MODULE ALARM BELL RUN TIME CONTACTS HEAT EXCHANGER 1 / HEAT EXCHANGER 2 HW PUMP SEQUENCER / BUILDING MANAGEMENT SYSTEM TOUCH PANEL INTERFACE TOUCH DISPLAY IGNITOR...

  • Page 8: General Operation

    Service Manual Service General Operation How the water heater operates Access modes The Armor X2 uses two (2) advanced stainless steel heat User exchangers and two (2) electronic control modules that allow fully condensing operation. The blowers pull in gas and The user can view all of the settings on the LCD screen.

  • Page 9: Sequence Of Operation

    Service Manual Service (continued) Sequence of operation Table 1A Sequence of operation Note: This unit is equipped with two (2) independent, but synchronized combustion systems. One of the heat exchanger combustion systems will fire first. If the demand cannot be met by one (1) combustion system the same sequence of operation will be followed to bring the second heat exchanger combustion system online.

  • Page 10: Parameter Table

    Service Manual Service Parameter table Table 1B This table lists the parameters and where to access them USER ACCESS INSTALLER ACCESS MENU DESCRIPTION PAGE DISPLAY MODIFY DISPLAY MODIFY Service/Setup Night Setback Set points Cascade Demand Conf Serv Not Time Serv Not Run H Serv Not Cycl Max Serv T Temp Unit...
  • Page 11 Service Manual Service (continued) Table 1B (continued from previous page) This table lists the parameters and where to access them Date and time On Timer and Off Timer Casc Address Casc off df Casc off/on df Max Outl temp BMS Type ModBus Timeout BMS Setp min V BMS Setp max V...

  • Page 12: Viewable And Changeable Control Parameters

    Service Manual Service Viewable and changeable control parameters Status Screen: When the ON/OFF switch is turned to the ON position, • BMS - The water heater has received a call for heat from the first screen visible on the LCD display will be the Status a 0-10 VDC BMS control.
  • Page 13 Service Manual Service (continued) Time - The time is displayed in the upper right-hand corner of Configuration - This line shows the current configuration of the display. It is displayed in a 24 hour format. Reference the the two control modules inside the unit. Night Setback parameters on page 21 for information regarding Outlet Water Temperature - This is a calculated temperature adjusting the date and time.
  • Page 14 Service Manual Service Details Screen: The Details Screen is accessed by pressing the DETAIL button • Blocked Drain Switch - Is ON when the blocked drain on the Status Screen. This screen shows the status of the switch on the condensate trap is closed. Is OFF when the various safeties, inputs and outputs to each control module.
  • Page 15 Service Manual Service (continued) Time - The time is displayed in the upper right-hand corner of A blank message box is located on the Details Screen. This the display. It is displayed in a 24 hour format. Reference the box will display various messages detailing the status of the night setback parameters on page 22 for information regarding control module.
  • Page 16 Service Manual Service Main Screen: The Main Screen allows navigation to eight (8) additional Navigation to the Main Screen can be accomplished by pressing screens which are used to set temperatures, operating the MAIN button at the bottom of the page. conditions, and monitor water heater operation.
  • Page 17 Service Manual Service (continued) Before changing parameters, note the settings so that the unit can be returned to its original operating CAUTION parameters. Setup Screen: The Setup Screen allows access to five (5) other screens for If the password has been entered correctly, the Parameter adjusting control parameters.
  • Page 18 Service Manual Service Service/Setup Parameters Screen: The Service / Setup Screen allows access to 10 parameters. Demand Configuration 6: Cascade Modbus BMS Voltage Those parameters are as follows: based on a 0 - 10V dc signal is provided to the water heater to control either set point or modulation.
  • Page 19 Service Manual Service (continued) Reference page 17 for information regarding changing • Maximum Service Time - Service Mode allows the parameters. installer to control the fan speed of the individual control modules for the purposes of combustion analysis. Time - The time is displayed in the upper right-hand corner of Service Mode will override all other heat demands, the display.
  • Page 20 Service Manual Service Set Point Parameters Screen: The Set Point Screen allows access to 6 parameters. Those parameters are as follows: • Anti-cycling Time - Once a call for heat has been satisfied, a • Hot Water Tank Set Point - The hot water tank set amount of time must elapse before the control will set point sets the target temperature of the water in the respond to a new call for heat.
  • Page 21 Service Manual Service (continued) Night Setback Parameters Screen: The Night Setback Screen allows access to 15 parameters. Example: Monday ON: 22:30, Tuesday OFF: 6:45. If you wish Those parameters are as follows: to skip a day and no night setback is necessary, program the on and off times the same and set them prior to 12:00 (noon).
  • Page 22 Service Manual Service Cascade Parameters Screen: • Cascade Off/On Differential - Sets how many degrees Cascade Operation below the turn off temperature (set point + Cascade Off When multiple water heaters are installed, they can be wired Differential) the temperature has to go before the lead together in a cascade sequence.
  • Page 23 Service Manual Service (continued) 0 - 10Vdc BMS Parameters Screen: 0-10Vdc Operation • BMS Voltage at Minimum Set Point - Determines the When the Demand Configuration parameter (see page 18) voltage at which the external signal begins to increase the is set to either Cascade BMS Thermostat Based, Cascade set point.
  • Page 24 Service Manual Service Reference page 17 for information regarding changing • BMS Modulation at Minimum Voltage - Determines the modulation rate of the unit or cascade when the BMS parameters. input voltage is at or below the setting of the BMS Voltage Time - The time is displayed in the upper right-hand corner of at Minimum Modulation parameter.
  • Page 25 Service Manual Service (continued) Cascade Screen: Set Point - This is the set point of the cascade system. The heater The Cascade Screen provides the status of the cascade system. designated as the Leader will use this set point to determine the Items that can be viewed on the Cascade Screen are as follows: power level required to bring the tank temperature to this point.
  • Page 26 Service Manual Service The Building Screen displays information that is specific to the Building Automation System and is being transmitted through the Modbus communication link: Modbus Address - This is the address of a specific Armor Boiler Command - This displays the value written to register X2 water heater.
  • Page 27 Service Manual Service (continued) Temps Screen: The Temps Screen displays the various temperatures as Time - The time is displayed in the upper right-hand corner of measured by sensors connected to each control module. the display. It is displayed in a 24 hour format. Reference the Items that can be viewed on the Temps Screen are as follows: night setback parameters on page 21 for information regarding adjusting the date and time.
  • Page 28 Service Manual Service Burners Screen: This screen provides the status of the combustion air blowers Time - The time is displayed in the upper right-hand corner of and flame signals. Items that can be viewed on the Burners the display. It is displayed in a 24 hour format. Reference the Screen are as follows: night setback parameters on page 21 for information regarding adjusting the date and time.
  • Page 29 Service Manual Service (continued) Graph Select Screen: The Graphs Screen consists of two (2) different screens. The Time - The time is displayed in the upper right-hand corner of first screen is the Parameter Selection Screen. By pressing the the display. It is displayed in a 24 hour format. Reference the box beside the desired item, a check will appear in the selected night setback parameters on page 21 for information regarding box and the control will graph the status of that item.
  • Page 30 Service Manual Service History Screen: The History Screen shows the status of various counters Time - The time is displayed in the upper right-hand corner of and faults for each control module. Selection of the control the display. It is displayed in a 24 hour format. Reference the module to be viewed is accomplished by pressing the SELECT night setback parameters on page 21 for information regarding button.
  • Page 31 Service Manual Service (continued) Service Mode Screen: The Service Mode Screen allows the individual control Time - The time is displayed in the upper right-hand corner of modules to override all other heat demands and operate at the display. It is displayed in a 24 hour format. Reference the a full fire condition for the purpose of combustion analysis.

  • Page 32: Maintenance

    Service Manual Maintenance Maintenance and annual startup Table 2A Service and Maintenance Schedules Service technician Owner maintenance (see the following pages for instructions) General: • Address reported problems • Check water heater area • Inspect interior; clean and vacuum if Daily •...

  • Page 33: Address Reported Problems

    Service Manual Maintenance (continued) Follow the service and maintenance procedures given throughout this manual and in component literature WARNING shipped with the water heater. Failure to perform the service and maintenance could result in damage to the water heater or system. Failure to follow the directions in this manual and component literature could result in severe personal injury, death, or substantial property damage.

  • Page 34: Check Water System

    Service Manual Maintenance Flue vent system and air piping Safety relief valves should be re-inspected WARNING AT LEAST ONCE EVERY THREE YEARS, Visually inspect the entire flue gas venting system and air by a licensed plumbing contractor or piping for blockage, deterioration or leakage. Repair any authorized inspection agency, to ensure joints that show signs of leakage.

  • Page 35: Check Burner Flame

    Service Manual Maintenance (continued) Inspect ignition and flame sense Check burner flame electrodes 1. Inspect flame through observation window. 1. Remove the ignition and flame sense electrodes from the 2. If the flame is unsatisfactory at either high fire or low water heater heat exchanger access cover.

  • Page 36: Check Delta T

    Service Manual Maintenance Cleaning water heater heat Table 2B Heat Exchanger Cleaning Kits exchanger Model Part Component For recommended materials; including brush, appropriate Number Number Number Description extension(s), refractory cover, and detailed instructions see Table 2B - Heat Exchanger Cleaning Kits. MSC20083* Nylon 4”...

  • Page 37: Troubleshooting

    Service Manual Troubleshooting Alarm Screen: Reset button - The RESET button must be pressed to reset an If a fault occurs which requires a Manual Reset, the unit alarm. Once the button is pressed, the Reset Confirmation will go into a lockout condition and the Alarm Screen will Screen appears.

  • Page 38: Before Troubleshooting

    Service Manual Troubleshooting Label all wires prior to disconnection when Figure 3-1 Control Module Fuses WARNING servicing controls. Wiring errors can cause improper and dangerous operation. F3 - 1.25 AMP FUSE Always disconnect power to the water MAIN BOARD heater before servicing. Failure to comply could result in severe personal injury, death, or substantial property damage.

  • Page 39: Table 3A - Troubleshooting Chart - No Display

    Service Manual Troubleshooting (continued) Table 3A Troubleshooting Chart - No Display FAULT CAUSE CORRECTIVE ACTION - No 120 VAC supplied to unit. • Check external line switch, fuse, or breaker. • Check position of ON/OFF switch. Turn switch to the ON position.

  • Page 40: Checking Temperature Sensors

    Service Manual Troubleshooting Checking temperature sensors The water heater temperature sensors (inlet water, outlet water, system water, and flue) are all resistance type devices. The following tables show the correct values for the sensors at various temperatures. Use an ohmmeter to read the resistance of the sensor at a known temperature.

  • Page 41: Table 3D - Troubleshooting Chart - Noisy System

    Service Manual Troubleshooting (continued) Table 3D Troubleshooting Chart - Noisy System FAULT CAUSE CORRECTIVE ACTION - Supply gas problem. Natural gas pressures • Refer to Section 7 - Gas Connections of the Armor X2 should be between 4 inches w.c. (1.0 kPa) Installation Operation Manual...

  • Page 42: Table 3E - Troubleshooting Chart - Fault Messages

    Service Manual Troubleshooting Table 3E Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION • Check water heater pump operation on a call for heat. • Check for closed valves or obstructions in the water Flow Switch/ heater piping.
  • Page 43 Service Manual Troubleshooting (continued) Table 3E (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION • If 24 VAC is present at the main control board, check the wiring between the main control board and the gas valve.

  • Page 44: Corrective Action

    Service Manual Troubleshooting Table 3E (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION • If 24 VAC is present at the main control board, check the wiring between the main control board and the gas valve.
  • Page 45 Service Manual Troubleshooting (continued) Table 3E (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION Automatic Reset High Limit: • Verify that the system is full of water and that all air has been properly purged from the system.
  • Page 46 Service Manual Troubleshooting Table 3E (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION • Vent/air intake lengths exceed the maximum allowed lengths. Refer to Section 3 - General Venting of the Armor X2 Installation and Operation Manual for Blower RPM’s proper lengths.
  • Page 47 Service Manual Troubleshooting (continued) Table 3E (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION Air pressure switch contacts are open. • Check the wiring connections to switch. Wires should be connected to the common and normally closed terminals.
  • Page 48 Service Manual Troubleshooting Table 3E (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION The main control board has detected an • Replace the main control board. Internal Fault internal fault. Writing to The main control board has detected an •...

  • Page 49: Combustion Analysis Procedure

    Service Manual Troubleshooting (continued) Combustion Analysis Procedure Table 3H Flue Products 1. Turn the main power off to the water heater by placing Natural Gas Propane the “On/Off” switch in the OFF position. 2. Remove the flue temperature sensors from the flue pipe connections.

  • Page 50: Gas Valve Adjustment Procedure

    Service Manual Troubleshooting Gas valve adjustment procedure Models 1.3 - 1.5 If adjustment of the gas valve is deemed necessary, use the Locate the throttle adjustment screw on top of the gas valve, following procedures: (Note: The procedures below are see FIG.
  • Page 51 Notes...

  • Page 52: Revision Notes

    Revision Notes: Revision A (ECO #C09645) initial release. AWX2-SER Rev A 1/12...

This manual is also suitable for:

Armorx2 1.5Armorx2 1.0

Table of Contents