Lochinvar 400, 801 service manual What is in this manual?, Service, Maintenance, Troubleshooting

What is in this manual?

Service

Near boiler piping

• Typical system components

The Knight XL display

• Display panel readout, buttons and their functions

Control module inputs

• Control module inputs and options

Control module outputs

• Control module outputs and options

General

•How the boiler operates

•How the control module operates

•Access modes -- user and installer

•Sequence of operation -- Domestic Hot Water (DHW)/space heating

Control panel menu access

•Accessing programming mode and locating menus (See separate guide covering the interface.)

Control panel parameter access

• Accessing and changing parameters from the display panel

Quick start information -- parameter table

•An index of available adjustments and readouts, where to access them and where to find detailed information.

Knight XL operation

•A: General

•B: Temperature Setting

•C: Data Logging

•D: Functions

•E: DHW Settings

•F: Outdoor Reset

•G: Anti-cycling

•H: Control Modes

•I: Circulation Pumps

•J: Building Management System (BMS)

•K: Service Notification

Service Manual

Maintenance

•Service and maintenance schedules

•Address reported problems

•Inspect boiler area and boiler interior

•Clean condensate trap

•Check all piping for leaks

•Check air openings

•Flue vent system and air piping

•Check water system

•Check expansion tank

•Check boiler relief valve

•Inspect ignition electrode

•Check ignition ground wiring

•Check all boiler wiring

•Check control settings

•Perform start-up and checks

•Check burner flame

•Check flame signal

•Check flue gas temperature

•General maintenance

•Review with owner

•Cleaning boiler heat exchanger

•Oiled bearing circulators

Troubleshooting

•Troubleshooting table - No display

•Checking temperature sensors

•Sensor tables

•Troubleshooting table - Fault messages displayed on boiler interface

•Combustion analysis procedure

•Gas valve adjustment procedure

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