Connections
16
Steam Heating Side Connections
only for 92 and 120 USG / 350 and 450 ltr capacity
Do
not
use Vitocell indirect-fired hot water storage tanks in superheated steam
applications.
Use appropriate control strategy.
Control strategy must ensure that the values below are not exceeded.
Install a steam-side control to regulate DHW temperature and ensure that the DHW
temperature does not exceed 210°F / 99°C.
Max. steam supply
temperature
392°F / 200°C
. . . . . . . . . . . . . . . . . . .
Max. domestic hot water
temperature
200°F / 95°C
. . . . . . . . . . . . . . . . . . . . . .
Max. operating pressure
- steam side
15 psig
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- DHW side
150 psig
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Max. testing pressure
- steam side (primary)
488 psig
. . . . . . . . . . . . .
- DHW side (secondary)
195 psig
. . . . . . . .
Individual DHW tank
Vitocell 300
Sensor/Aquastat well
Vacuum breaker
Steam valve
Steam supply line
Condensation return line
Condensate trap
1.
Pipe steam and condensate lines as
illustrated. Connections must be
accessible for service (use factory
supplied adaptors).
Use hemp and pipe dope on all threaded
stainless steel nipples on tank.
2.
Remove plastic grommets on tank
where condensate lines connect
(grommets are left threaded).
3.
Install DHW tank temperature sensor
in sensor well; install steam valve.
Installation Instructions
Control Valve
4.
Insulate piping.
5167
535
v1
.2
The operating aquastat and any
secondary high limit aquastat of the
tank must be set such that the DHW
temperature inside the tank never
exceeds 210°F / 99°C.
WARNING
Domestic hot water temperatures
over 125°F / 52°C can cause severe
burns instantly or death from scalds.
Children, disabled and elderly are at
highest risk of being scalded.
Feel water before bathing or
showering.
Temperature limiting valves are
available and must be used where
domestic hot water storage tank
temperatures exceed 140°F / 60°C.
DANGER
Fig 10.
Recommended piping of an individual tank in a steam system
IMPORTANT
For steam applications, a field
supplied 1” T&P valve must be
utilized.
CAUTION
