A.O. Smith DSE-5 Instruction Manual page 37

MedIuM teMperature - three heaters VertIcal storaGe tank
MedIuM teMperature - three heaters horIZontal storaGe tank
*pIpe relIef ValVe to open draIn.
†tank teMperature control set
at desIred teMperature (MaX. 170°).
heater therMostat set at least 5°
hIGher.
Install In accordance wIth all
local codes.
NOTE: BRANCH PIPING TO ALL HEATERS
Must Be saMe sIZe and lenGth for
equal flow. these Branches May
Be sIZed up to 1 1/4" so that cross
sectIonal areas of all Inlets and
outlets at least equal area of
theIr respectIVe MaIn pIpInG.
reVerse return pIpInG shown.
37