Greetings
We just had our 19 year old Bradford White 80 gallon water heater replaced with a Navien-NPE A2 using the dedicated return line that was installed when the house was built in 2003. The installer wasn't too familiar with the A2 model which has the internal recirc pump but I had looked into before hand and we got the system up and running in 'hot button/manual' mode after making the appropriate changes. (set to external recirculation and the internal 2 way valve also set to external recirc, pointing down)
My question/problem is the recirc pump is not running very long and the 'in water temp' does not appear to be getting up where I expected it to be. A did a lot of googling and one suggestion was to go into the installer's menu and change the 'fixture distance' setting so the pump would run longer. I have played around with it a bit, and even setting the distance to 400', the pump will only run for about 3 minutes max and the 'in water temp' only gets up to around 108 degrees, but it is an improvement over what it was doing. There is also a dip switch on the 'hot button controller module' that I changed to be on to disable the 'energy saver function'
Any ideas what I can do to get the pump to run longer to get the 'In Water Temp' up into the 120 degree range before shutting off?
We just had our 19 year old Bradford White 80 gallon water heater replaced with a Navien-NPE A2 using the dedicated return line that was installed when the house was built in 2003. The installer wasn't too familiar with the A2 model which has the internal recirc pump but I had looked into before hand and we got the system up and running in 'hot button/manual' mode after making the appropriate changes. (set to external recirculation and the internal 2 way valve also set to external recirc, pointing down)
My question/problem is the recirc pump is not running very long and the 'in water temp' does not appear to be getting up where I expected it to be. A did a lot of googling and one suggestion was to go into the installer's menu and change the 'fixture distance' setting so the pump would run longer. I have played around with it a bit, and even setting the distance to 400', the pump will only run for about 3 minutes max and the 'in water temp' only gets up to around 108 degrees, but it is an improvement over what it was doing. There is also a dip switch on the 'hot button controller module' that I changed to be on to disable the 'energy saver function'
Any ideas what I can do to get the pump to run longer to get the 'In Water Temp' up into the 120 degree range before shutting off?