Set-up
7
Multiple Tank Set-up
only for 79 and 120 USG / 300 and 450 ltr capacity
Two
tanks, each with
79 USG / 300 ltr content,
or up to
four tanks
, each with
120
USG / 450 ltr content
, may be installed side-by-side.
The tank battery is controlled via one DHW tank aquastat making control of
individual tanks within the tank battery impossible.
If control of individual tanks within a battery is necessary, two alternatives exist.
Either a 4-tank battery needs to be separated into smaller batteries i.e. two
batteries each consisting of two tanks (one DHW tank aquastat controls each
battery), or all tanks should be installed individually i.e. individual tank set-up (one
DHW tank aquastat controls each tank).
Domestic hot water supply
and T&P valve connection
Recirculation tapping
Boiler/solar water supply
Operating aquastat
Boiler/solar water return
Domestic cold water
Drain
Air vent
1.
Install aquastat in the boiler water
supply of the last tank receiving the
boiler water of the tank battery (see
illustration).
2.
Install domestic cold and hot water
header lines (see illustration).
3.
Install boiler/solar water supply and
return header lines (see illustration).
4.
Make final cold and hot water
connections.
Both the boiler/solar supply/return header
and the domestic hot/cold water header
must be installed in a reverse return
method. This ensures uniform heating of
all tanks in the battery. Header sizes for
batteries up to four 79 to 120 USG / 300
to
450 ltr tanks are printed on page 8.
5.
Insulate header piping lines.
5
1
6
7
5
1
9
v
2
.2
Fig 2.
Installing multiple tanks in a battery
Y
Y
Y
Y
IMPORTANT
In commercial installations, we
recommend the installation of an
additional high limit aquastat in the
main discharge pipe of domestic hot
water from the tank battery into the
system, and to wire this additional
high limit aquastat in series with the
operating aquastat.
CAUTION
