Installation & Operation Manual
Please read before proceeding
Installer –
Read all instructions, including
this manual and the Knight XL Service
Manual, before installing. Perform steps in
the order given.
User –
Th
is manual is for use only by
a qualified heating installer/service
technician. Refer to the User’s Information
Manual for your reference.
Have this boiler serviced/inspected by
a qualifi ed service technician, at least
annually.
Failure to comply with the above could
result in severe personal injury, death or
substantial property damage.
Failure to adhere to the guidelines on this
page can result in severe personal injury,
death, or substantial property damage.
When servicing boiler –
• To avoid electric shock, disconnect electrical supply
before performing maintenance.
• To avoid severe burns, allow boiler to cool before
performing
maintenance.
Boiler operation –
• Do not block fl ow of combustion or ventilation air to
the boiler.
• Should overheating occur or gas supply fail to shut off ,
do not turn off or disconnect electrical supply to
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.
Th
e possible damage to a fl ooded appliance can be
extensive and present numerous safety hazards. Any
appliance that has been under water must be replaced.
Boiler water –
• Th
oroughly fl ush the system (without boiler connected)
to remove sediment. Th
e high-effi
ciency heat exchanger
can be damaged by build-up or corrosion due to sediment.
Freeze protection fl uids –
• NEVER use automotive antifreeze. Use only inhibited
propylene glycol solutions, which are specifi cally
formulated for hydronic systems. Ethylene glycol is
toxic and can attack gaskets and seals used in hydronic
systems.
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.
Any claims for damage or shortage in
shipment must be fi led immediately
against the transportation company by the
consignee.
Factory warranty (shipped with unit) does
not apply to units improperly installed or
improperly operated.
3
If the information in this manual is not
followed exactly, a fi re or explosion may
result causing property damage, personal
injury or loss of life.
Th
is appliance MUST NOT be installed in
any location where gasoline or fl ammable
vapors are likely to be present.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do
not use any phone in your building.
•
Immediately call your gas supplier
from a near by phone. Follow the
gas supplier’s instructions.
• If you cannot reach your gas supplier,
call the fi re department.
•
Installation and service must be
performed by a qualifi ed installer,
service agency, or the gas supplier.
WARNING
NOTICE
WARNING
WARNING
WARNING
DO NOT install units in rooms or
environments that contain corrosive
contaminants (see Table 1A on page 11).
Failure to comply could result in severe
personal injury, death, or substantial
property damage.
WARNING
Th
e California Safe Drinking Water and
Toxic Enforcement Act requires the
Governor of California to publish a list of
substances known to the State of California
to cause cancer, birth defects, or other
reproductive harm, and requires businesses
to warn of potential exposure to such
substances.
Th
is product contains a chemical known to
the State of California to cause cancer, birth
defects, or orther reproductive harm. Th
is
boiler can cause low level exposure to some
of the substances listed in the Act.
