Lochinvar ARMOR 151 - 801 User Manual

Service ManualModels:151 - 801This manual must only be used by aqualified heating installer / servicetechnician. Read all instructions,including this

1 Service10Service ManualDisplay panel menu accessTable 1B Use this procedure to access menus from the display panelBUTTONSCREENSTATUSOPERATION DISPL

Service Manual11Display panel parameter accessTable 1C This is a typical example of accessing a parameter, shown for parameter DHW Settings, TANK MIN

1 Service12Service ManualParameter tableTable 1D This table lists SMART SYSTEM control module parameters and where to access themMenuSubItemDescripti

1 Service (continued)Service ManualMenuSubItemDescriptionSeePageUser Access Installer AccessDisplay Modify Display ModifyF1 BMS Tstat Input (Active/

1 Service14Service ManualViewable and changeable control parametersCAUTIONBefore changing parameters, note thesettings so that the unit can be return

1 Service (continued)15Service ManualTank Minimum Set PointThis setting controls the minimum user set point for the tanktemperature. The installer c

Service Manual161 Service F: Control modesBMS Thermostat Input (Active / Inactive)When controlling the water heater through the 0 - 10V BMSinput or t

1 Service (continued)Service Manual17Maximum Cascade Outlet Set PointThis parameter determines the set point used by theindividual water heaters in a

1 ServiceService Manual18Service Notification CyclesWhen the water heater control determines that a scheduledservice is due based on the number of wa

2 MaintenanceService Manual19Maintenance and annual startupTable 2A Service and Maintenance SchedulesService technician(see the following pages for i

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

2 Maintenance 20Service ManualFollow the service and maintenance procedures given throughout this manual and in component literatureshipped with the

2 Maintenance (continued)21Service ManualFlue vent system and air piping1. Visually inspect the entire flue gas venting system and airpiping for bloc

2 MaintenanceService Manual222 Maintenance Inspect ignition and flame senseelectrodes1. Remove the ignition and flame sense electrodes fromthe water

Service Manual2 Maintenance (continued)Check flame signal1. At high fire the flame signal shown on the displayshould be at least 10 microamps.2. A lo

3 TroubleshootingService Manual24Label all wires prior to disconnectionwhen servicing controls. Wiringerrors can cause improper anddangerous operati

25Service Manual3 Troubleshooting (continued)Table 3A Troubleshooting Chart - No DisplayFAULT CAUSE CORRECTIVE ACTIONNo Display- No 120 VAC supplied

Service Manual263 Troubleshooting Table 3B - Inlet System Sensor Resistance vs. TemperatureTemperature °FResistance ΩTemperature °FResistance Ω50 18,

3 Troubleshooting (continued)27Service ManualTable 3E Troubleshooting Chart - Noisy SystemFAULT CAUSE CORRECTIVE ACTIONNoisyOperation- Supply gas pro

Service Manual283 Troubleshooting Table 3F Troubleshooting Chart - Fault Messages Displayed on Water Heater InterfaceFAULT DESCRIPTION CORRECTIVE ACT

29Service Manual3 Troubleshooting (continued)Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater

Service ManualPlease read before proceedingInstaller – Read all instructions,including this manual and the ArmorWater Heater Installation and Operatio

Service Manual303 Troubleshooting Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface

3 Troubleshooting (continued)31Service ManualTable 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater

3 Troubleshooting Service Manual32Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface

Service Manual333 Troubleshooting (continued)Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater

3 Troubleshooting 34Service ManualTable 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface

Service Manual353 Troubleshooting (continued)Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater

3 Troubleshooting 36Service ManualCombustion Analysis Procedure1. Turn the main power off to the water heater by placing the“On/Off” switch in the OF

Service Manual373 Troubleshooting (continued)Gas valve adjustment procedureIf adjustment of the gas valve is deemed necessary, use thefollowing proce

38Model 501Locate the throttle adjustment screw on top of the gas valve, seeFIG. 3-4. Using a screwdriver, turn the screw a 1/4 turncounterclockwise

Notes39

4Service ManualWhat is in this manual?ServiceThe Armor water heater display• Display panel readout, buttons and their functionsControl module inputs•

Revision Notes: Revision A (ECO #C06238) initial release.AWII-SER Rev A8/10

1 ServiceService Manual5NAVIGATION DIAL(PRESS OR TURN)RIGHT SELECT KEY(SOFT KEY)LEFT SELECT KEY(SOFT KEY)RESET KEYThe Armor water heater displayThe i

1 Service6Service ManualGAS PRESSURE SWITCHDHW THERMOSTATFLOW SWITCHTANK SENSORSEQUENCER / BUILDINGMANAGEMENT SYSTEMLOW VOLTAGE CONNECTIONBOARDINLET

Service Manual7LOW VOLTAGE CONNECTIONBOARDSMART SYSTEMCONTROL BOARDALARM BELLLOUVER RELAYRUN TIME CONTACTSSEQUENCER / BUILDINGMANAGEMENT SYSTEMWATER H

1 Service8Service ManualGeneral OperationHow the water heater operatesThe Armor water heater uses an advanced stainless steel heatexchanger and an el

Service Manual9Table 1A Sequence of operation 1 Service (continued)OPERATION DISPLAY1. The control will turn on the water heater pump (always ON exce