THERMO 2000 BTH 10, Use & Care Manual

24

Maintenance 

 
Properly maintained, your boiler will provide years of 
dependable, trouble free service.  It is recommended 
that a regular routine maintenance program be 
established and followed by the user.  Components are 
subject to eventual failure that requires service.  Failure 
to use the correct procedures or parts in these 
circumstances may make the unit unsafe or reduce the 
life of the boiler.   
 
The owner should have the following inspection and 
maintenance procedures performed: 
 

BOILER WATER PIPING:   

Yearly visual inspection. 

Check all piping for signs of leakage near joints, unions 
and shut-off valves.  Repair as needed. 
 

PRESSURE RELIEF VALVE

Monthly inspection. 

Must be manually operated to ensure safe and proper 
operation.  By opening the pressure relief valve, the air 
trapped inside the heater tank is purged.  
 
Make sure that the discharged water is directed to a 
suitable drain or other collection device, and will not 
spray onto anyone.  Use the lever on the pressure relief 
valve to open.  A steady discharge of hot water should 
occur.  After releasing this lever the safety relief valve 
should close and fully shut off this flow.  If the pressure 
relief valve does not function properly, it must be 

replaced with the same model or its equivalent.  Do not 
plug the outlet of this valve if a dripping condition 
occurs. 
 
 
 

The manufacturer’s warranties DO NOT cover tank 
failure due to improper installation or maintenance.  
If the pressure relief valve on the heater discharges 
periodically, this may be due to thermal expansion.   
Immediately call a qualified service technician to 
inspect and to remedy as needed.  
 
NOTE:  To prevent  premature tank failure, the air 
trapped inside the tank must be purged periodically.  
Use the safety relief valve on top of the tank to 
perform this task.  

Before manually operating the relief valve, make 
certain no one will be sprayed with the hot water 
released by its opening.  The water may be hot 
enough to create a SCALD hazard.  The water 
released should be directed to a suitable drain to 
prevent injury or damage. 

DANGER

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WARNING

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