Lochinvar 400, 801 The Knight XL

The Knight XL - How it works...

Rear View - Model 501

Rear View - Models 601 - 801 Left Side (inside unit) - Models 601 - 801

Left Side (inside unit) - Model 501

Model 501

Models 601 - 801

Installation & Operation Manual

Contents

Main Contents Hazard de nitions DANGER WARNING CAUTION CAUTION NOTICE Please read before proceeding When servicing boiler Boiler operation Boiler water Freeze protection uids The Knight XL - How it works... Front View - Model 400 Left Side (inside unit) - Model 400 Right Side (inside unit) - Model 400 The Knight XL - How it works... Rear View - Model 400 Model 400 The Knight XL - How it works... Left Side (inside unit) - Model 501 Models 601 - 801 Rear View - Model 501 Rear View - Models 601 - 801 Left Side (inside unit) - Models 601 - 801 Ratings Knight XL Boiler I=B=R Rating Other Speci cations Installation must comply with: Before locating the boiler, check: Closet and alcove installations Provide clearances: 1 Figure 1-2 Alcove Installation - Minimum Required Clearances ALCOVE INSTALLATION RECOMMENDED SERVICE CLEARANCES: CLOSET INSTALLATION Provide air openings to room: Flooring and foundation Residential garage installation Vent and air piping Prevent combustion air contamination 1 When using an existing vent system to install a new boiler: When removing a boiler from existing common vent system: 2 Remove boiler from wood pallet Gas conversions Model 400 2 Leveling the boiler Model 501 Models 601 - 801 Direct venting options - Sidewall Vent Direct venting options - Vertical Vent, Sidewall Air Direct venting options - Vertical Vent PVC/CPVC vent piping materials Install vent and combustion air piping Installing vent or air piping Requirements for installation in Canada PVC/CPVC air intake/vent connections Air inlet pipe materials: Stainless steel vent Model Stainless steel air intake/vent connections ProTech Heat Fab Z Flex FasNSeal Saf-T Vent Z-Vent Optional room air Page Determine location Model Kit Number Vent Size Page Prepare wall penetrations Termination and ttings Multiple vent/air terminations Prepare wall penetrations (Alternate - Field Supplied Option) Description and usage Page Vent/air termination vertical Determine location Vent/air termination vertical Prepare roof penetrations Termination and ttings Multiple vent/air terminations Vertical termination optional concentric vent: Models 400 - 601 Only Description and usage Vertical termination optional concentric vent: Models 400 - 601 Only Alternate vertical concentric venting Concentric Venting Arrangement Figure 5-8 Concentric Vent Example 1 Figure 5-9 Concentric Vent Example 2 Existing vent as a chase Figure 5-10 Existing Vent as a Chase System water piping methods Low water cutoff device Chilled water system Freeze protection General piping information Flow switch, relief valve and temperature and pressure gauge installation Flow switch adjustment Near boiler piping components Near boiler piping connections Circulator sizing Variable speed pump option Pressure Drop vs Flow (Includes Boiler Secondary Piping) Flow Rate (GPM) Flow Rate (GPM) Pressure Drop (Feet of Head) TEMPERATURE RISE APPLICATIONS Figure 6-7 Single Boiler - Multiple Temperatures NOTICE NOT TO EXCEED 4 PIPE DIA OR MAX. OF 12" APART Figure 6-8 Single Boiler - Primary/Secondary Piping NOTICE Figure 6-9 Multiple Boilers - Multiple Temperatures Model NOTICE Number of Units 2 3 4 5678 Manifold Pipe Sizes in Inches (mm) Figure 6-10 Multiple Boilers - Primary/Secondary Piping Model NOTICE Number of Units 2345678 Manifold Pipe Sizes in Inches (mm) Figure 6-11 Single Boiler - Multiple Temperatures with DHW Piped as a Zone 7 Connecting gas supply piping 7 Natural gas: Propane Gas: 7 Check inlet gas supply 7 Gas valve replacement 8 Installation must comply with: Line voltage connections Low voltage connections 8 Thermostat Outdoor temperature sensor DHW (Domestic Hot Water) thermostat DHW tank sensor 8 Modbus Flow switch System supply sensor Alarm contacts 8 Figure 8-3 Low Voltage Field Wiring Connections 9 Condensate drain Check/control water chemistry Freeze protection (when used) Fill and test water system Purge air from water system Check for gas leaks Check thermostat circuit(s) Inspect/ ll condensate system 10 Final checks before starting the boiler Start the boiler If boiler does not start correctly Check system and boiler FOR YOUR SAFETY READ BEFORE OPERATING Figure 10-2 Operating Instructions OPERATING INSTRUCTIONS TO TURN OFF GAS TO APPLIANCE 10 Check ame and combustion (continued) Set space heating operation Set domestic hot water (DHW) operation General How the boiler operates How the control module operates Control inputs and outputs Temperature control Protection features Boiler temperature regulation Outdoor reset operation, if used Cascade Sequence of operation OPERATION DISPLAY Sequence of operation OPERATION DISPLAY Knight XL control module NAVIGATION DIAL Access modes Saving parameters Status Display Screens Section Display Description A (Boiler Status Bar) A C D % B F E Status Display Screens Section Display Description C (Operational Information) D (LEFT SELECT key function) Page Maintenance and annual startup Service technician Owner maintenance 12 Address reported problems Check all piping for leaks Inspect boiler area Inspect boiler interior Flue vent system and air piping Check water system Check expansion tank Check boiler relief valve 12 Inspect ignition and ame sense electrodes Check ignition ground wiring Check all boiler wiring Check control settings Check ame signal Review with owner Cleaning boiler heat exchanger 13 3 HIGH VOLTAGE BOX DEPICTS OPTIONAL ITEMS LOW VOLTAGE 120 VAC Figure 13-2 Ladder Diagram CAUTION HIGH VOLTAGE SPARK LEAD BMS BOX DEPICTS OPTIONAL ITEMS LADDER DIAGRAM LBL20141 REV C