Lochinvar 51 operation manual

Contents

Main Hazard definitions Contents DANGER WARNING CAUTION CAUTION NOTICE Please read before proceeding When servicing boiler Boiler operation Boiler water Freeze protection fluids The Knight Wall Mount Boiler - How it works... Front View Left Side (inside unit) Right Side (inside unit) T he Knight W all Mount Boiler - Ho w it w or ks... Models 51 - 211 FRONT OF UNIT Bottom View Ratings Knight Wall Mount Boiler I=B=R Rating Other Specifications Installation must comply with: Before locating the boiler, check: Closet and alcove installations Provide clearances: * Provide air openings to room: Wall mounting location Residential garage installation Vent and air piping 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 2 Mounting the boiler Direct venting options - Sidewall Vent Direct venting options - Vertical Vent Direct venting options - Vertical Vent, Sidewall Air PVC/CPVC Vent piping materials Install vent and combustion air piping Installing vent and air piping Requirements for installation in Canada PVC/CPVC air intake/vent connections Air inlet pipe materials: Stainless steel vent ProTech Heat Fab Z Flex FasNSeal Saf-T Vent Z-Vent Removing from existing vent Vent and air piping Stainless steel air intake/vent connections Model 2" Max Vent/Air 3" Max Vent/Air Optional room air Vent/air termination sidewall Determine location Model Kit Number Vent Size Vent/air termination sidewall 4 Termination and fittings Prepare wall penetrations (Alternate - Field Supplied Option) Multiple vent/air terminations Prepare wall penetrations Sidewall termination optional concentric vent Description and usage 4 Sidewall termination optional concentric vent models Sidewall termination optional concentric vent Vent/air termination vertical Determine location Vent/air termination vertical Prepare roof penetrations Termination and fittings Multiple vent/air terminations 5 Vertical termination optional concentric vent Description and usage Page 5 Alternate vertical concentric venting Concentric Venting Arrangement Model Vent / Air Inlet Size Minimum Existing Vent / Chase Size Page System water piping methods Low water cutoff device Chilled water system Freeze protection General piping information Near boiler piping components Near boiler piping connections VENT AIR Figure 6-1A Near Boiler Piping w/Y-Strainer Figure 6-1B Near Boiler Piping w/Low Loss Header VENT AIR 20F Temperature Rise Applications 25F Temperature Rise Applications 35F Temperature Rise Applications Variable speed pump option Minimum Temperature Rise* Pump BOILER INDIRECT DHW TANK COLD WATER IN MAKE UP WATER Figure 6-3 Single Boiler - Single Temperature Zoned with Circulators INDIRECT DHW TANK MAKE UP WATER MAY SUBSTITUTE LOW LOSS HEADER NOT TO EXCEED 4 PIPE DIA OR MAX. OF 12" APART BOILER 2 (MEMBER 1) Figure 6-5 Single Boiler - Multiple Temperatures COLD WATER IN MAKE UP WATER HOT WATER OUT MAY SUBSTITUTE LOW LOSS HEADER Figure 6-6 Multiple Boilers - Multiple Temperatures Figure 6-7 Multiple Boilers - Multiple Temperatures with DHW Piped as a Zone COLD WATER IN MAKE UP WATER HOT WATER OUT BOILER INDIRECT DHW TANK Figure 6-8 Single Boiler Zoned with Valves INDIRECT DHW TANK MAKE UP WATER MAY SUBSTITUTE LOW LOSS HEADER NOT TO EXCEED 4 PIPE DIA OR MAX. OF 12" APART Figure 6-9 Multiple Boilers Zoned with Valves Figure 6-10 Single Boiler - Non-Zoned Primary/Secondary Piping BOILER INDIRECT DHW TANK MAKE UP WATER 7 Connecting gas supply piping 7 Natural gas: Propane Gas: 7 Natural Gas Pipe Capacity Chart Length of Pipe in Straight Feet for 1/2 PSI Check inlet gas supply 7 Gas Pressure Gas valve replacement DETAIL 8 Installation must comply with: Low voltage connections Line voltage connections 8 Thermostat Outdoor temperature sensor DHW thermostat Louver relay 8 Boiler management system Runtime contacts Alarm contacts Wiring of the cascade 8 Figure 8-4 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/fill condensate system 10 Final checks before starting the boiler Start the boiler If boiler does not start correctly Check system and boiler Page 10 Check flame and combustion (continued) Set space heating operation Set domestic hot water (DHW) operation NOTICE General How the boiler operates How the control module operates Control inputs and outputs Temperature control Protection features Boiler temperature regulation Cascade Outdoor reset operation, if used Sequence of operation OPERATION DISPLAY Sequence of operation Access modes Saving parameter s OPERATION DISPLAY Knight wall mount boiler control module Status Display Screens Section Display Description A (Boiler Status Bar) B (Call for Heat Indicators) % 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 Address reported problems Inspect boiler area Check all piping for leaks Inspect boiler interior Clean condensate trap 12 Inspect ignition and flame sense electrodes Check ignition ground wiring Check all boiler wiring Check control settings Check flame signal Review with owner Oiled bearing circulators Cleaning boiler heat exchanger 13 Figure 13-1 Ladder Diagram CAUTION HIGH VOLTAGE SPARK LEAD BMS BOX DEPICTS OPTIONAL ITEMS Figure 13-2 Wiring Diagram BOX DEPICTS OPTIONAL ITEMS HIGH VOLTAGE LOW VOLTAGE 120 VAC