Burnham Series 4N Boiler Instruccion De Instalación

Installation of an automatic mixing valve will 

lengthen the delivery of the available hot water by mixing 

some cold water with the hot. This prevents excessive 

and possibly scalding hot water. Higher temperature hot 

water is possible by piping the hot water from the heater 

prior to entering the mixing valve. The mixing valve 

should be “trapped” by installing it below the cold water 

inlet to heater to prevent lime formation in the valve.
6.  FLUSHING THE BOILER
  All water contains some sediment which settles on 

the inside of the coil. Consequently, the heater should 

be periodically backwashed. This is accomplished by 

installing hose bibs as illustrated and allowing water at 

city pressure to run into hosebib A, through the heater, 

and out hosebib B until the discharge is clear. The tees 

in which the hosebibs are located should be the same 

size as heater connections to minimize pressure drop. 
7.  HARD WATER
  May be applicable to some city and particularly well 

water. Have your water analyzed by a qualified water 

treatment specialist to determine if a water softener, 

conditioner or filtration is required. Treated water will 

ensure longer tankless heater life and performance 

and is also beneficial to all the piping and fixtures in the 

building.