Lochinvar ArmorX2 1.3 User Manual

Service ManualModels: 1.0, 1.3, and 1.5This manual must only be used by a qualified heating installer / service technician. Read all instructions, in

Parameter tableTable 1B This table lists the parameters and where to access themMENU DESCRIPTIONSEE PAGEUSER ACCESS INSTALLER ACCESSDISPLAY MODIFY DIS

Date and time 21 Yes Yes Yes YesOn Timer and Off Timer 21 No No Yes YesNIGHTTable 1B (continued from previous page) This table lists the parameters an

Viewable and changeable control parametersStatus Screen:When the ON/OFF switch is turned to the ON position, the first screen visible on the LCD displ

Configuration - This line shows the current configuration of the two control modules inside the unit.Outlet Water Temperature - This is a calculated t

1 Service Details Screen:The Details Screen is accessed by pressing the DETAIL button on the Status Screen. This screen shows the status of the vari

151 Service (continued) A blank message box is located on the Details Screen. This box will display various messages detailing the status of the

16Main Screen:1 ServiceThe Main Screen allows navigation to eight (8) additional screens which are used to set temperatures, operating conditions, an

Setup Screen:The Setup Screen allows access to five (5) other screens for adjusting control parameters. These screens are as follows: • Service / Se

Service/Setup Parameters Screen:1 ServiceThe Service / Setup Screen allows access to 10 parameters. Those parameters are as follows: • Demand Confi

1 Service (continued) • Maximum Service Time - Service Mode allows the installer to control the fan speed of the individual control modules

2Hazard definitionsThe following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or

1 ServiceSet Point Parameters Screen:The Set Point Screen allows access to 6 parameters. Those parameters are as follows: • Hot Water Tank Set Poi

1 Service (continued) 21Night Setback Parameters Screen:The Night Setback Screen allows access to 15 parameters. Those parameters are as follows:•

1 Service22Cascade Parameters Screen:Cascade OperationWhen multiple water heaters are installed, they can be wired together in a cascade sequence. A

1 Service (continued)230 - 10Vdc BMS Parameters Screen:0-10Vdc OperationWhen the Demand Configuration parameter (see page 18) is set to either Cascad

1 Service24 • BMS Modulation at Minimum Voltage - Determines the modulation rate of the unit or cascade when the BMS input voltage is at or

1 Service (continued)25Cascade Screen:The Cascade Screen provides the status of the cascade system. Items that can be viewed on the Cascade Screen a

1 Service 26 1 803455 On Modbus Address - This is the address of a specific Armor X2 water heater. This address is set by dip switches on the Modbu

1 Service (continued)Temps Screen:The Temps Screen displays the various temperatures as measured by sensors connected to each control module. Items

1 Service Burners Screen:This screen provides the status of the combustion air blowers and flame signals. Items that can be viewed on the Burners Sc

Graph Select Screen:The Graphs Screen consists of two (2) different screens. The first screen is the Parameter Selection Screen. By pressing the box

3 Service ManualInstaller – Read all instructions, including this manual and the Armor X2 Water Heater Installatio

History Screen:1 Service The History Screen shows the status of various counters and faults for each control module. Selection of the control module

1 Service (continued)Service Mode Screen:The Service Mode Screen allows the individual control modules to override all other heat demands and operate

2 MaintenanceMaintenance and annual startupTable 2A Service and Maintenance SchedulesService technician(see the following pages for instructions)Gene

Follow the service and maintenance procedures given throughout this manual and in component literature shipped with the water heater. Failure to perf

Flue vent system and air piping1. Visually inspect the entire flue gas venting system and air piping for blockage, deterioration or leakage. Repair

Inspect ignition and flame sense electrodes1. Remove the ignition and flame sense electrodes from the water heater heat exchanger access cover.2. Re

2 Maintenance The water heater contains ceramic fiber materials. Use care when handling these materials per instructions on page 3 of this manual. F

3 Troubleshooting37Alarm Screen:If a fault occurs which requires a Manual Reset, the unit will go into a lockout condition and the Alarm Screen will

3 Troubleshooting38Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Always

3 Troubleshooting (continued)39Table 3A Troubleshooting Chart - No DisplayFAULT CAUSE CORRECTIVE ACTIONNo Display- No 120 VAC supplied to unit. •

What is in this manual?4 Service ManualServiceThe Armor X2 water heater display• Display panel readout, buttons an

3 Troubleshooting40Table 3B - Inlet/Outlet and Tank Sensor Resistance vs. TemperatureTemperature Resistance Temperature Resistance50 18,780 158 1,990

3 Troubleshooting (continued)41Table 3D Troubleshooting Chart - Noisy SystemFAULT CAUSE CORRECTIVE ACTIONNoisy Operation- Supply gas problem. Natura

3 TroubleshootingTable 3E Troubleshooting Chart - Fault Messages Displayed on Water Heater InterfaceFAULT DESCRIPTION CORRECTIVE ACTIONFlow Switch/LW

3 Troubleshooting (continued)43Table 3E (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAU

3 Troubleshooting44Table 3E (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTI

Table 3E (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION

3 Troubleshooting Table 3E (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTIO

Table 3E (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION

3 Troubleshooting48Table 3E (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTI

3 Troubleshooting (continued) Table 3G Troubleshooting Chart - Combustion LevelsPOSSIBLE CAUSE CORRECTIVE ACTIONVent/Air Intake Length or Obstruction

1 Service The Armor X2 display5 Service Manual

503 TroubleshootingGas valve adjustment procedureIf adjustment of the gas valve is deemed necessary, use the following procedures: (Note: The proced

Notes51

Revision Notes: Revision A (ECO #C09645) initial release.AWX2-SER Rev A1/12

FLOW SWITCHSEQUENCER / BUILDINGMANAGEMENT SYSTEMLOW VOLTAGE CONNECTIONBOARDPRIMARY/SECONDARY INLETTEMPERATURE SENSOR PRIMARY/SECONDARYFLUE GAS SENSORP

LOW VOLTAGE CONNECTIONBOARDPRIMARYCONTROL MODULEALARM BELLRUN TIME CONTACTSSEQUENCER / BUILDINGMANAGEMENT SYSTEMHEAT EXCHANGER 1 /HEAT EXCHANGER 2 HW

General OperationHow the water heater operatesThe Armor X2 uses two (2) advanced stainless steel heat exchangers and two (2) electronic control module

1 Service (continued) Sequence of operationTable 1A Sequence of operationNote: This unit is equipped with two (2) independent, but synchronized comb