Table Of Contents; Contents; Hazard Definitions - Lochinvar KNIGHT 81-286 Service Manual

CONTENTS ........................................................................ 2
Hazard Definitions .............................................................. 2
PLEASE READ BEFORE PROCEEDING ........................ 3
Handling Ceramic Fiber Materials ...................................... 3
When servicing boiler ................................................... 4
Boiler operation ............................................................ 4
Boiler water ................................................................... 4
Freeze protection fluids ................................................ 4
WHAT IS IN THIS MANUAL .............................................. 5
1. SERVICE
Near Boiler Piping .............................................................. 6
The Knight Boiler Display ................................................... 7
Control Inputs ............................................................... 8
Control Outputs ............................................................. 9
General Operation ...................................................... 10
Sequence of Operation ............................................... 11-12
Display Panel Menu Access ............................................ 13
Display Panel Parameter Access ..................................... 14
Parameter Table.......................................................... 15-18
Viewable and Changeable Control Parameters .......... 19-27

Hazard definitions

The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or
to important information concerning the life of the product.
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious
DANGER
injury.
WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious
WARNING
injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate
CAUTION
injury.
CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not
CAUTION
avoided, may result in property damage.
NOTICE indicates special instructions on installation, operation, or maintenance that are important but not
NOTICE
related to personal injury or property damage.
2

Contents

2. MAINTENANCE
Maintenance and Annual Startup ................................ 28-32
3. TROUBLESHOOTING
Before Troubleshooting .................................................... 33
Check Control Module Fuses .......................................... 33
Table 3-1 - Troubleshooting Chart - No Display .............. 34
Checking Temperature Sensors ...................................... 35
Table 3-3 - Troubleshooting Chart - Noisy System ......... 36
Table 3-4 - Troubleshooting Chart - Fault Messages . 37-46
Combustion Analysis Procedure ...................................... 46
Table 3-5 - Flue Products ................................................ 46
Table 3-6 - Troubleshooting Chart - Combustion Levels 47
Gas Valve Adjustment Procedure .................................... 47
Revision Notes .................................................. Back Cover