Lochinvar WH 55 - 399

User’s Information Manual

3 Operating instructions

Figure 3-2 Operating Instructions - Model 399

Contents

Main Users Information Manual Models: WH 55 - 399 Hazard definitions DANGER WARNING CAUTION CAUTION NOTICE Contents Please read before proceeding Boiler service and maintenance Boiler operation Boiler water Freeze protection fluids 1 Service technician Owner maintenance Maintenance procedures Boiler must be serviced and maintained Check boiler area Check pressure/temperature gauge Check vent piping 2 Operate relief valve Shut boiler down (unless boiler is used for Domestic Water) Test low water cutoff (if installed) Reset button (low water cutoff) Check boiler piping (gas and water) 3 Figure 3-1 Operating Instructions - Models 55 - 285 o Page Access modes Saving parameters Knight wall mount control module Adjusting parameters NOTICE 4 Status Display Screens Section Display Description % A (Boiler Status Bar) B (Call for Heat Indicators) C (Operational Information) D (LEFT SELECT key function)