"Michael Thomas, Paragon Property Services, http://www.paragoninspects.com"
wrote in message
...
No, you cannot put one in series to correct a flow issue. If would still
be
restricting the flow as the water still needs to flow thru tankless ,
thus
still the 5GPM, you can't get more out of a tank than you are putting in
to
it. Parallel devices add, series devices is the flow of the lowest
device.
Putting 2 in parallel would give you a 10GPM flow at the shower, 3 15GPM,
4
20GPM etc

Takagi has a controller to allow you to so this with their T-M1s:

http://www.tanklesswaterheatersdirec...agitm1main.asp

Michael Thomas
Paragon Property Services Home Inspections
http://www.paragoninspects.com



They are placing the devices in parralel with eachother, nothing special,
the OP could do that with "his brand" Their "controller" opens and closes
solenoids as needed based on flow requirements.