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Service Manual

Models: 1.0, 1.3, and 1.5

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.



WARNING

Save this manual for future reference.

AWX2-SER Rev A

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Содержание ArmorX2 1.0

Страница 1: ...echnician 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 per...

Страница 2: ...er Table 10 11 Viewable and Changeable Control Parameters 12 31 2 MAINTENANCE Maintenance and Annual Startup 32 36 3 TROUBLESHOOTING Alarm Screen 37 Before Troubleshooting 38 Check Control Module Fuse...

Страница 3: ...ing the ceramic materials it is advisable that the installer follow these safety guidelines Avoid breathing dust and contact with skin and eyes Use NIOSH certified dust respirator N95 This type of res...

Страница 4: ...led information Armor X2 water heater operation Setup Service Setup Setpoint Night Setback Cascade Pumps BMS Maintenance Service and maintenance schedules Address reported problems Inspect water heate...

Страница 5: ...1 Service The Armor X2 display 5 Service Manual...

Страница 6: ...SENSOR PRIMARY SECONDARY FLAME SENSOR BLOCKED DRAIN SWITCH TOUCH PANEL INTERFACE PC INTERFACE SECONDARY SMART CONTROL MODULE PRIMARY SMART CONTROL MODULE HW TANK SENSOR ENABLE TOUCH DISPLAY MODBUS CO...

Страница 7: ...IME CONTACTS SEQUENCER BUILDING MANAGEMENT SYSTEM HEAT EXCHANGER 1 HEAT EXCHANGER 2 HW PUMP IGNITOR BLOWER GAS VALVE PC INTERFACE SECONDARY SMART TOUCH CONTROL MODULE TOUCH PANEL INTERFACE TOUCH DISPL...

Страница 8: ...t of gas to flow Sequence of operation Table 1A shows control module normal sequences of operation for each individual control module Additionally the control modules are programmed to synchronize the...

Страница 9: ...ol does not detect flame current the control will try again If no flame current is detected on the second try the control will lockout indefinitely until the RESET button on the touch screen LCD is pr...

Страница 10: ...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 Max Serv T 19 Yes No Yes No Temp Unit 19 No No Yes Yes User Passwd 19 No No Yes Yes LCD Backlight 19 N...

Страница 11: ...Yes Max Outl temp 22 No No Yes Yes CASCADE 1 Service continued SETBACK 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...

Страница 12: ...ater call Standby The water heater has not received a hot water call HW Storage The water heater has received a hot water call HW Pump Delay The water heater has satisfied a hot water call and the hot...

Страница 13: ...e time is displayed in the upper right hand corner of the display It is displayed in a 24 hour format Reference the Night Setback parameters on page 21 for information regarding adjusting the date and...

Страница 14: ...w Switch Low Water Cutoff Is ON when the low water cutoff contacts are closed or if an optional flow switch is used and it is closed as well Is OFF when the low water cutoff contacts are open or if an...

Страница 15: ...he control has dropped below 80 VAC Reference page 47 for more information regarding this fault message Connect Tank Sensor Tank sensor is not detected by Control Module 1 For proper operation of the...

Страница 16: ...hows the operating and fault history of the two 2 control modules Service Mode Allows the installer to control the fan speed of the individual control modules for the purposes of combustion analysis S...

Страница 17: ...eter and adjustment buttons To adjust the parameter press the or buttons to change the value being displayed Once the parameter has been adjusted to the desired setting press the APPLY button to chang...

Страница 18: ...us BMS Voltage based on a 0 10V dc signal is provided to the water heater to control either set point or modulation An equivalent 0 10V dc signal is provided by writing to the holding registers on the...

Страница 19: ...ler to a code of their choosing The default code is 0704 LCD Backlight Sets the length of time the LCD Screen will stay on after a button has been pressed This parameter can be changed by the user or...

Страница 20: ...point Ifthetemperaturedropsbelowthe temperature parameter the control will abort anti cycling andallowthewaterheatertofire Thisparametercanonlybe changed by the installer The temperature range of this...

Страница 21: ...han 32 F the night setback feature becomes active This will require on and off times to be programmed for the days that reduced temperatures are required Each day of the week Monday through Sunday wil...

Страница 22: ...ler The temperature range of this parameter is 0 to 72 F The default value is 10 F Cascade Off On Differential Sets how many degrees below the turn off temperature set point Cascade Off Differential t...

Страница 23: ...his parameter can only be changed by the installer The temperature range of this parameter is 70 to 190 F The default value is 179 F BMS Voltage at Minimum Set Point Determines the voltage at which th...

Страница 24: ...modulation rate power Below this voltage the modulation rate power will be at the setting of the BMS Modulation at Minimum Voltage parameter This parameter is only active when the BMS Type is set to...

Страница 25: ...in the cascade Demand Shows the status of the cascade Displayed items are No Demand the Cascade leader has not received a call for heat HotWaterDemand theCascadeleaderhasreceiveda call for heat Set P...

Страница 26: ...03 of the Modbus communication board by the Building Automation System The value is displayed as the effective setpoint in degrees F or C Note The water heater can be configured to operate off the wat...

Страница 27: ...The temperature is the tank set point for a Hot Water call Tank Sensor Temperature sensed in the tank by the tank sensor Time The time is displayed in the upper right hand corner of the display It is...

Страница 28: ...ol module RPM s Each blower will display the rpm that the control module is requiring of the blower Flame Signal The flame signal for each control module will be displayed in dc microamps Time The tim...

Страница 29: ...ay bar with their Min and Max ranges listed below them Press the BACK button to return to the Parameter Selection Screen Time The time is displayed in the upper right hand corner of the display It is...

Страница 30: ...nitions Shows the total number of times the control has attempted to ignite Last 10 Faults Shows the last 10 faults of the control module by date and time Time The time is displayed in the upper right...

Страница 31: ...dicator A blower is depicted on the display with a power level indicator beside it The level will increase and decrease indicating the approximate power level of the blower The display box underneath...

Страница 32: ...and performance verification per Section 9 in the Armor X2 Installation and Operation Manual Flame inspection stable uniform Flame signal at least 10 microamps at high fire Clean the heat exchanger i...

Страница 33: ...vicinity they must be removed If they cannot be removed reinstall the air and vent lines per this manual and the Armor X2 Installation and Operation Manual Inspect water heater interior 1 Remove the f...

Страница 34: ...inspection agency to ensure that the product has not been affected by corrosive water conditions and to ensure that the valve and discharge line have not been altered or tampered with illegally Certai...

Страница 35: ...e through observation window 2 If the flame is unsatisfactory at either high fire or low fire turn off water heater and allow water heater to cool down Remove the burner and clean it thoroughly using...

Страница 36: ...the heat exchanger while dry using a nylon bristle brush Caution DO NOT use a metal brush Re vacuum the heat exchanger 8 Finish cleaning using a clean cloth dampened with warm water Rinse out debris w...

Страница 37: ...does not have a fault No Alarm Present will be in the text It is possible for one control module to be in alarm while the other continues to function However it will not be possible to view any other...

Страница 38: ...c If one of these fuses is blown it can prevent the control module or other components from operating 1 Turn OFF the power to the water heater at the external line switch 2 Remove the front access cov...

Страница 39: ...ain control board Blown fuse Replace fuse F3 on the main control board see page 38 of this manual No Burner Operation Main control board temperature set point satisfied Review temperature setting Remo...

Страница 40: ...tance 68 14 773 176 1 707 86 9 804 194 1 266 104 6 652 212 952 122 4 607 230 726 140 3 252 248 560 158 2 337 Checking temperature sensors The water heater temperature sensors inlet water outlet water...

Страница 41: ...procedure Clean or replace the burner as necessary Low water flow through the heat exchanger Refer to Section 6 System Piping of the Armor X2 Installation and Operation Manual for minimum flow rates...

Страница 42: ...heck the flame rod and make sure it is clean Check the internal wiring for bad connections Replace main control board Gas Valve Connection will require a manual reset once the condition has been corre...

Страница 43: ...ect flame sensor and associated wiring Reference page 35 of this manual for removal and cleaning procedures Replace if necessary Inspect the burner Reference page 35 of this manual for removal and cle...

Страница 44: ...alve is not opening Replace the gas valve Inspect flame sensor and associated wiring Reference page 35 of this manual for removal and cleaning procedures Replace if necessary Inspect the burner Refere...

Страница 45: ...le 3B on page 40 of this manual Replace sensor if necessary Replace outlet sensor HEX Temp SW Check continuity across two contacts Wires should be connected at both poles of normally closed switch Ins...

Страница 46: ...ay to reset Either the inlet water or outlet water temperature sensor has been shorted Check the sensors and their associated wiring Repair or replace the sensor or wiring if damaged Measure the resis...

Страница 47: ...s manual for removal and cleaning procedures Replace if necessary Faulty air pressure switch Replace switch Flap valve contacts are in an open position Check the wiring connections to the flap valve s...

Страница 48: ...l of water and that all air has been properly purged from the system Verify that the heater is piped properly into the heating system Refer to Section 6 System Piping of the Armor X2 Installation and...

Страница 49: ...een from the Status Screen by pressing the MAIN button and then the SERVICE MODE button 5 On the Service Screen place Heat Exchanger 1 into operation by selecting Heat Exchanger 1 with the SELECT butt...

Страница 50: ...combustion is still not within the specified range revisit the possible causes in Table 3F on page 49 or replace the gas valve CAUTION Under normal operating conditions this valve should not need adju...

Страница 51: ...Notes 51...

Страница 52: ...Revision Notes Revision A ECO C09645 initial release AWX2 SER Rev A 1 12...

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