Lochinvar 400 - 801 service manual Contents

Page 2

Contents

CONTENTS

. 2

2. MAINTENANCE

 

 

Hazard Definitions

. 2

Maintenance and Annual Startup

. . . . . . .

28-32

PLEASE READ BEFORE PROCEEDING

. 3

3. TROUBLESHOOTING

 

 

Handling Ceramic Fiber Materials

. 3

Before Troubleshooting

. . . . . . .

33

When servicing boiler

. 4

Check Control Module Fuses

. . . . . . .

33

Boiler operation

4

Table 3-1 - Troubleshooting Chart - No Display

. . . . . . .

34

Boiler water

. 4

Checking Temperature Sensors

. . . . . . .

35

Freeze protection fluids

. 4

Table 3-3 - Troubleshooting Chart - Noisy System

36

WHAT IS IN THIS MANUAL

. 5

Table 3-4 - Troubleshooting Chart - Fault Messages . . . 37-43

1. SERVICE

 

Combustion Analysis Procedure

. . . . . . .

44

Near Boiler Piping

. 6

Table 3-5 - Troubleshooting Chart - Combustion Levels

44

The Knight XL Display

. 7

Table 3-6 - Flue Products

. . . . . . .

44

Control Inputs

. 8

Gas Valve Adjustment Procedure

. . . . . . .

45

Control Outputs

. 9

Revision Notes

Back Cover

General Operation

10

 

 

 

Sequence of Operation

11-12

 

 

 

Display Panel Menu Access

13

 

 

 

Display Panel Parameter Access

14

 

 

 

Parameter Table

15-18

 

 

 

Viewable and Changeable Control Parameters

19-27

 

 

 

Hazard definitions

The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product.

￿DANGER

￿WARNING

￿CAUTION

CAUTION

NOTICE

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage.

NOTICE indicates special instructions on installation, operation, or maintenance that are important but not related to personal injury or property damage.

2

Image 2
Contents Models 400 Contents Niosh stated First Aid Please read before proceedingHandling ceramic fiber materials When servicing boiler Maintenance What is in this manual?Service TroubleshootingService Near boiler pipingKnight XL display Navigation DialControl inputs LOW Voltage Connection BoardSmart Control Module Control outputsHow the boiler operates Access modesGeneral Operation How the control module operatesOperation Display From previous page Sequence of Operation Display panel menu access Button Screen Operation Display StatusDisplay panel parameter access Parameter table GeneralSettings Reset Notification Date and Time Temperature units C / FViewable and changeable control parameters Software VersionFunctions Temperature SettingsData Logging DHW Settings Outdoor Reset Anti-Cycling Controlling Sensor SH Ramp DelayControl modes BMS Thermostat Input Active / InactiveCascade Offset Minimum On/Off TimeCirculation pumps Service Notification Owner maintenance Maintenance Maintenance and annual startupService technician Maintenance Check expansion tank Flue vent system and air pipingCheck water system Check boiler relief valveCheck control settings Check ignition ground wiringCheck all boiler wiring Inspect ignition and flame sense electrodesReview with owner Check flame signalCleaning boiler heat exchanger Model Kit Part Component Number DescriptionCheck control module fuses TroubleshootingBefore troubleshooting Check the followingOperation No DisplayNo Burner Unit Does NotWire Color R/BK and Y Wire Color G and Y Checking temperature sensorsTemperature Resistance Resistance TemperatureBoiler Pump System Pump NoisyNo Pump DHW PumpSwitch/LWCO FlowAnti-cycling Flame Fail IgnHigh Limit Auto ResetFlame Sequence Fan LowFan High GV/RelayFail Fan Speed HighOutlet Temp Flue Temp HighDelta T High HighParameters Progr Service BlkRem Ctrl Flt Low 24 vac Watch Dog ErrorNo Error Stored Write EEPromOr Obstruction Combustion Analysis ProcedureGas Valve Adjustment Gas Supply PressureModels 601 Gas valve adjustment procedureModel Page