Lochinvar 399 사용자 설명서

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 – This 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
qualified 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.

• To avoid electric shock, disconnect electrical supply 

before performing maintenance.

• To avoid severe burns, allow boiler to cool before 

performing maintenance.

• Do not block flow 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.  

The possible damage to a flooded appliance can be 
extensive and present numerous safety hazards.  Any 
appliance that has been under water must be replaced.

• Thoroughly flush the system (without boiler 

connected) to remove sediment.  The high-efficiency 
heat exchanger can be damaged by build-up or 
corrosion due to sediment.

• Do not use petroleum-based cleaning or sealing 

compounds in the boiler system.  Gaskets and seals in 
the system may be damaged.  This can result in 
substantial property damage.

• Do not use “homemade cures” or “boiler patent 

medicines”.  Serious damage to the boiler, personnel, 
and/or property may result.

• Continual fresh make-up water will reduce boiler life.  

Mineral buildup in the heat exchanger reduces heat 
transfer, overheats the stainless steel heat exchanger, 
and causes failure.  Addition of oxygen carried in by 
makeup water can cause internal corrosion in system 
components.  Leaks in boiler or piping must be repaired 
at once to prevent makeup water.

• NEVER use automotive antifreeze.  Use only inhibited 

propylene glycol solutions, which are specifically 
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 filed immediately
against the transportation company by
the consignee.

Factory warranty (shipped with unit)
does not apply to units improperly
installed or improperly operated.

If the information in this manual is not
followed exactly, a fire or explosion may
result causing property damage, personal
injury or loss of life.

This appliance MUST NOT be installed
in any location where gasoline or
flammable vapors are likely to be present.

• 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 fire department.

• Installation and service must be 

performed by a qualified installer, 
service agency, or the gas supplier.

 WARNING

 WARNING

 WARNING