new gas condensing boiler

soot5bic

just installed new viesmann 200 gas condensing hot water boiler. System is incredibly efficient and am very happy with it. Am wondering however, if the system [zones and heat exchanger] should be purged and flushed on a regular basis. Have seen other heat exchangers plug up over time and wondering if annual or longer flushing along with regular cleaning is advisable. Am not sure if flushing with fresh water is a good idea. Appreciate thoughts.

Mad Dog_2

Glad you're Happy..Viessman is The Gold Standard.  What is the Boiler connected to  system-wise?  Steel & Iron fittings? Copper baseboard?  That's going to tell you alot. We'd love to see some pictures...Mad Dog 🐕 

hot_rod

No need or reason to flush. Hopefully good water was used to fill. The manual has the water spec.

soot5bic

system is all copper piping along with copper baseboard, supposedly thoroughly flushed and purged upon initial install. also has purpro hydroseperator installed. standard town water [treated] used.

neilc

is the system quiet?
you don't hear water rushing around the house, correct?
if you do then there's still air inside,

post pictures, general wide shot of boiler, circ(s), expansion tank, zone valves,
all in one shot, maybe from a couple angles,
we'll see what we see,

soot5bic

system quiet as can be. lowered pump speed to 70% and 80% for zones and hot water. just a quiet hum when system is running. can't tell if system is running unless you are next to the boiler.

neilc

success