Lochinvar 399 - 800

User’s Information Manual

Notes

Contents

Main Users Information Manual Models: 399 - 800 WARNING Save this manual for future reference. 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) Check Air Vents Test low water cutoff (if installed) Reset button (low water cutoff) 3 FOR YOUR SAFETY READ BEFORE OPERATING OPERATING INSTRUCTIONS TO TURN OFF GAS TO APPLIANCE Knight XL control module Access modes Saving parameters Parameter table A E C TEMPERATURE NOTICE E: DHW settings F: Outdoor air reset Status Display Screens #1 #2 #3 #4 #6 #5 #7 #8 Operation of the cascade #9 #10