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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

 WARNING

 CAUTION

 CAUTION

 NOTICE

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious 
injury.

WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious 
injury.

CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate 
injury.

CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not 
avoided, may result in property damage.

NOTICE indicates special instructions on installation, operation, or maintenance that are important but not 
related to personal injury or property damage.

Contents

HAZARD DEFINITIONS .....................................................  2
PLEASE READ BEFORE PROCEEDING .........................  3
1.  PREVENT COMBUSTION AIR CONTAMINATION .....  4
2.  MAINTENANCE SCHEDULE .......................................  5
Maintenance Procedures ...................................................  6
     Boiler Must Be Serviced and Maintained ....................   6
     Check Boiler Area .........................................................  6
     Check Pressure Temperature Gauge ...........................  6
     Check Vent Piping ........................................................  6
     Check Air Piping ...........................................................  6
     Check Relief Valve .......................................................  6
     Check Condensate Drain System ............................. 6-7
     Check Air Vents ............................................................  8
     Test Low Water Cutoff (if installed) ..............................  8
     Reset Button (low water cutoff) ....................................  8
     Check Boiler Piping (gas and water) ............................  8
     Operate Relief Valve ....................................................  8
     Shut Boiler Down ..........................................................  8

3.  OPERATING INSTRUCTIONS .....................................  9
4.  SMART SYSTEM CONTROL MODULE
SMART SYSTEM Control Module ...................................  10
     Access Modes ............................................................  10
     Saving Parameters .....................................................  10
     Adjusting Parameters .................................................  10
     Temperature Settings ............................................ 10-11
     Status Display Screens ......................................... 12-14
Notes................................................................................ 15
Revision Notes ..................................................  Back Cover

Summary of Contents for Knight XL 400

Page 1: ...s are likely to be present WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Donottouchanyelectricswitch donotuseanyphoneinyour building Immediately call your gas supplier from a near by p...

Page 2: ...operty damage NOTICE indicates special instructions on installation operation or maintenance that are important but not related to personal injury or property damage Contents HAZARD DEFINITIONS 2 PLEA...

Page 3: ...upply to the circulator Instead shut off the gas supply at a location external to the appliance Do not use this boiler if any part has been under water The possible damage to a flooded appliance can b...

Page 4: ...Metal fabrication plants Beauty shops Refrigeration repair shops Photo processing plants Auto body shops Plastic manufacturing plants Furniture refinishing areas and establishments New building constr...

Page 5: ...ion Check wiring and connections Perform start up checkout and performance verification per Sec tion 10 in the Knight XL Installation and Operation manual Flame inspection stable uniform Flame signal...

Page 6: ...the boiler intake air will cause acidic condensate in the boiler This will cause significant damage to the boiler if allowed to continue Read the list of potential materials listed in Table 1A on page...

Page 7: ...in FIG 2 2 Call your qualified service technician to inspect the boiler and system 5 Leave the top of the 1 2 inch tee OPEN This is needed as a vacuum break 6 Do not expose condensate line to freezin...

Page 8: ...or discharge line may be blocked Immediately shut down the boiler following the operating instructions on page 9 of this manual Call your qualified service technician to inspect the boiler and system...

Page 9: ...to replace any part of the control system and any gas control which has been under water I RX FDQQRW UHDFK RXU JDV VXSSOLHU FDOO the fire department 1 STOP Read the safety information above on this l...

Page 10: ...described in the User section Rotate the NAVIGATION dial if needed until the arrow is pointing to TIME DATE Press the NAVIGATION dial once If the date and time are incorrect press the NAVIGATION dial...

Page 11: ...2 F 0 C 190 F 88 C The default is 125 F 52 C By installing a tank sensor the SMART SYSTEM control can perform the tank thermostat function The SMART SYSTEM control automatically detects the presence o...

Page 12: ...nds to clear the combustion chamber and vent system of residual flue products SHUTDOWN The unit has been placed in the OFF position The controlled temperature has exceeded its set point and its offset...

Page 13: ...p output BMS VOLTAGE The voltage received from a BMS system BLR PUMP OUTPUT The speed signal sent to a variable speed boiler pump in percent SYS PUMP INPUT The speed signal received from a variable sp...

Page 14: ...Pressing the NAVIGATION dial will display the Set Points Screen Turning the NAVIGATION dial will move the cursor up or down Turning the NAVIGATION dial will increase or decrease the current setting F...

Page 15: ...15 Notes User s Information Manual...

Page 16: ...cts the new model numbers for the Knight XL upgrade Revision B ECO C07072 reflects the change in design of the manual air vent valve update of FIG 2 3 on page 8 and the clarification of the user passw...

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