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AWX2-SER Rev A
Service Manual
Models: 1.0, 1.3, and 1.5
WARNING This manual must only be
used by a qualified heating
installer / service technician.
Read all instructions,
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.
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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 ...
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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. Manual, before installing. Perform steps Consider piping and installation when in the order given. determining water heater location (see th
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Service Manual What is in this manual? Service Maintenance � Service and maintenance schedules � Address reported problems The Armor X2 water heater display � Inspect water heater area and water heater interior � Display panel readout, buttons and their functions � Clean condensate trap � Check all piping for leaks Control module inputs � Check air openings � Control module inputs and options � Flue vent system and air piping � Check water system Control modu
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Service Manual 1 Service The Armor X2 display 5
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Service Manual 1 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 PRIMARY/SECONDARY FLUE GAS SENSOR FLOW SWITCH TOUCH PANEL TOUCH DISPLAY INTERFACE PRIMARY/S
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Service Manual 1 Service (continued) Control outputs SECONDARY SMART TOUCH LOW VOLTAGE CONNECTION CONTROL MODULE 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 TOUCH DISPLAY INTERFACE IGNITOR PC INTERFACE BLOWER GAS VALVE 7
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Service Manual 1 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. By air and push flue products out of the water heater through entering the user password (0704), the user can adjust the the heat exchan
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Service Manual 1 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. Upon a call for heat, the control turns on the
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Service Manual 1 Service Parameter table Table 1B This table lists the parameters and where to access them USER ACCESS INSTALLER ACCESS SEE MENU DESCRIPTION PAGE DISPLAY MODIFY DISPLAY MODIFY Service/Setup 17 Yes Yes Yes Yes Night Setback 17 Yes Yes Yes Yes Set points 17 Yes Yes Yes Yes Cascade 17 Yes Yes Yes Yes BMS 17 Yes Yes Yes Yes Demand Conf 18 Yes No Yes No Serv Not Time 18 No No Yes Yes Serv Not Run H 18 No No Yes Yes Serv Not Cycl 18 No No Yes Yes
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Service Manual 1 Service (continued) Table 1B (continued from previous page) This table lists the parameters and where to access them Date and time 21 Yes Yes Yes Yes On Timer and Off Timer 21 No No Yes Yes Casc Address 22 Yes Yes Yes Yes Casc off df 22 No No Yes Yes Casc off/on df 22 No No Yes Yes Max Outl temp 22 No No Yes Yes BMS Type 23 No No Yes Yes ModBus Timeout 23 No No Yes Yes BMS Setp min V 23 No No Yes Yes BMS Setp max V 23 No No Yes Yes BMS V mi
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Service Manual 1 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. Screen. This screen displays the current status of the Armor � Service Set Point Met - While in Service Mode, the X2 water heater. The following items can be viewed or wa
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Service Manual 1 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. based on the readings of the outlet te
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Service Manual 1 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. blocked drain switch on the condensate trap is open. Selection of the control module to be viewed is accomplished � Au
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Service Manual 1 Service (continued) A blank message box is located on the Details Screen. This Time - The time is displayed in the upper right-hand corner of box will display various messages detailing the status of the the display. It is displayed in a 24 hour format. Reference the control module. If a message is present in this box, the night setback parameters on page 22 for information regarding DETAILS button on the Status Screen will contain
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Service Manual 1 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. These Reference pages 17 - 31 of this manual for more information screens are as follows: regarding the eight (8) accessible screens. � Setup - Allows ac
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Service Manual 1 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. Change Screen will appear. The Parameter Change Screen will display the parameter being changed, the previous setting of the Thes
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Service Manual 1 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 � Demand Configuration - Sets the configuration of the control either set point or modulation. An equivalent 0 - control modules inside the water heater. The 10V dc signal is provided by
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Service Manual 1 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. It is displayed in a 24 hour format. Reference the howev
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Service Manual 1 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. The control will block the tank. This paramet
