Lochinvar condensing boiler 5 User Manual

      

User’s Information Manual 

The Crest Installation and Operation 
Manual along with the Crest Service 
Manual are for use only by a qualified 
heating installer/service technician. 

 

Refer only to this User’s Information 
Manual for your reference.  Improper 
installation, adjustment, alteration, 
service or maintenance can cause 
property damage, personal injury 
(exposure to hazardous materials) or 
loss of life.  Installation and service must 
be performed by a qualified installer, 
service agency or the gas supplier (who 
must read and follow the supplied 
instruction before installing, servicing, 
or removing this boiler.  This boiler 
contains materials that have been 
identified as carcinogenic, or possibly 
carcinogenic, to humans).

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 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 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.  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.

 WARNING