172-65627M-09 (SQ10) 18 Oct 2021
58
Installing Several SteamAqua Units in Parallel
When installing several units in parallel, make sure that the water flow to the units
is evenly distributed.
If the water flow is uneven, the unit with the higher flow rate becomes overloaded,
and the required temperature rise may be
obtainable.
The piping arrangement to evenly distribute water
to each unit is described below:
(1) The size of each branch pipe from the cold
water inlet piping to the unit connection
should be the same.
The size of each branch pipe from the unit
connection to the hot water outlet should be
same.
(2) Install a globe valve (not included with the
unit) on each cold water inlet branch pipe, so that the flow rate to each unit
can be adjusted.
Use full bore globe valves that have the same diameter as the cold water
branch piping.
The opening of the globe valves should be adjusted so the measured
temperature of the water side of each unit becomes the set temperature.
Furthermore, if each unit indicates a similar value for the control valve
opening, more stable heating is possible. (Control valve opening values can
be confirmed on the main screen of the control panel.)
Cold Water Inlet
Hot Water Outlet
SQ
SQ
(1)
(2)
(1)
