Lochinvar 000 - 2, 065, 495 service manual

Contents

Main INSTALLATION AND SERVICE MANUAL Save this manual for future reference. HYDRONIC HEATING BOILERS and DOMESTIC WATER HEATERS 495,000 - 2,065,000 Btu/hr MODELS Table of Contents GENERAL PRODUCT INFORMATION Special Instructions Unpacking Codes Warranty Page Page LOCATING UNIT Clearances from Combustible Construction Base for Combustible Floors FREEZE PROTECTION Pump Operation VENTING General Information Venting Support Vertical Vent Termination Clearances and Location Page Vent System Options Barometric Damper Location TABLE - B Flue Pipe Sizes TABLEC Minimum Recommended Combustion Air Supply To Boiler Room 1. Conventional Negative Draft Venting Negative Draft Flue Outlet Piping Vertical Vent Termination Clearances and Location 2. Outdoor Installation Venting TABLE - D Outdoor Vent Kits CONNECTING TO GAS SUPPLY Gas Pressure Test Gas Piping Connecting Gas Piping to Unit Gas Train and Controls Combination Gas Valves Checking Gas Supply Pressure Gas Manifold Pressure Adjustment CONNECTING TO WATER SUPPLY Inlet and Outlet Connections TABLE - I NET MANIFOLD PRESSURE Regulator Pressure Less Front Chamber Pressure Relief Valve Water Flow Switch CONNECTING TO ELECTRICAL SUPPLY External EMS Connection to Terminal Strip for Stage Firing Control of Burners Terminal Strip Connection Options TABLE - J Nominal AMP Draw Data BOILER SYSTEM PIPING General Plumbing Rules Water Connections: Heating Boilers Only Circulator Pump Requirements Heat Exchanger Pressure Drop Chart Primary/Secondary Boiler Piping Low Temperature Return Water Systems Radiant Floor and Snow Melt Heating Systems Installation with a Chilled Water System TABLE - L System Temperature Rise Chart Based on Btu/hr Input Boiler Flow Rate Boiler Bypass Requirements Temperature/Pressure Gauge FOR YOUR SAFETY READ BEFORE OPERATING Lighting Instructions To Turn Off Gas To Appliance FIG. 32 SETTING TEMPERATURE CONTROL Locating Temperature Control Temperature Control Settings TABLE - M High-Fire Offset Outdoor Air Reset Option Shutdown Outdoor Air Max (O.A. Max) Ratio Temperature Control Sensors Boiler Application Water Heater Application Placement of Sensors Remote Mounting of Sensor HOT SURFACE IGNITION SYSTEM Hot Surface Igniter and Ignition Control Module TABLE - N Remote Wire Connection Hot Surface Ignition Control Module Ignition and Control Timings OPERATION AND DIAGNOSTIC LIGHTS TABLE - O Status LED Diagnostic Codes TABLE - P Status LED Diagnostic Codes DOMESTIC WATER HEATERS Water Velocity Control Required Temperature Rise TABLE - Q Temperature Rise Chart Water Chemistry Pipe Size Requirements Circulating Pump 495,000 - 745,000 985,000 - 2,065,000 TABLE - R Pipe Sizing Chart DOMESTIC WATER HEATERS Minimum Pump Performance Heat Exchanger Potable Hot Water Temperature Control Settings Domestic Water Temperatures MAINTENANCE Appliance Area Water Circulating Pump Burner Flames Flue Gas Passageways Cleaning Procedures Heat Exchanger Cleaning Electrical Combustion and Ventilation Air Combustion Air Filter (Models 985,000 - 2,065,000 Btu/hr Only) Air Flow MAINTENANCE Servicing Hot Surface Igniter and Ignition Module MAINTENANCE Ignition System Checkout SEQUENCE OF OPERATION GLOSSARY Power Supply ON/OFF Rocker Switch Low Voltage Supply Transformer 24VAC Circuit Breaker Electronic Temperature Controller Ignition Module Tw o Speed Blower Pressur e Switch Prepur ge SCHEMATIC DIAGRAM MODELS 495,000 - 745,000 BTU/HR - DISCONNECT POWER BEFORE SERVICING THE UNIT OPTIONAL OPERATOR WIRING DIAGRAMS - MAIN UNIT CONNECTIONS MODELS 495,000 - 745,000 BTU/HR HI-LIMIT OPTION BOX "C" P IGNITION MODULE WIRING DIAGRAMS - MAIN UNIT CONNECTIONS MODELS 495,000 - 745,000 BTU/HR (CONTINUED) SPLICE ` ~~~~ OPTIONAL SCHEMATIC AND WIRING DIAGRAM MODELS 985,000 - 2,065,000 BTU/HR WIRING DIAGRAM - CONTROL BOX CONNECTIONS MODELS 985,000 - 2,065,000 BTU/HR CONNECTED UNLESS 5 6 8