Service Manual
Please read before proceeding
WARNING
Installer – Read all instructions, including this manual and the Knight XL Installation and Operation Manual, before installing. Perform steps in the order given.
User – This manual is for use only by a qualified heating installer/service technician. Refer to the Knight XL User’s Information Manual for your reference.
Have this boiler serviced/inspected by a qualified service technician at least annually.
Failure to comply with the above could result in severe personal injury, death or substantial property damage.
NOTICE
When calling or writing about the boiler – Please have the boiler model and serial number from the boiler rating plate.
Consider piping and installation when determining boiler location (see the Knight XL Installation and Operation Manual).
Any claims for damage or shortage in shipment must be filed immediately against the transportation company by the consignee.
Handling ceramic fiber materials
REMOVAL OF COMBUSTION CHAMBER LINING
WARNING
The combustion chamber insulation in this appliance contains ceramic fiber material. Ceramic fibers can be converted to cristobalite in very high temperature applications. The International Agency for Research on Cancer (IARC) has concluded, “Crystalline silica inhaled in the form of quartz or cristobalite from occupational sources is carcinogenic to humans (Group 1).” Normal operating temperatures in this appliance are below the level to convert ceramic fibers to cristobalite. Abnormal operating conditions would have to be created to convert the ceramic fibers in this appliance to cristobalite.
The ceramic fiber material used in this appliance is an irritant; when handling or replacing the ceramic materials it is advisable that the installer follow these safety guidelines.
Avoid breathing dust and contact with skin and eyes.
•Use NIOSH certified dust respirator (N95). This type of respirator is based on the OSHA requirements for cristobalite at the time this document was written. Other types of respirators may be needed depending on the job site conditions. Current NIOSH recommendations can be found on the NIOSH website at http://www.cdc.gov/niosh/homepage.html. NIOSH approved respirators, manufacturers, and phone numbers are also listed on this website.
•Wear
Apply enough water to the combustion chamber lining to prevent airborne dust.
Remove the combustion chamber lining from the appliance and place it in a plastic bag for disposal.
Wash potentially contaminated clothes separately from other clothing. Rinse clothes washer thoroughly.
NIOSH stated First Aid.
Eye: Irrigate immediately.
Breathing: Fresh air.
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