8
Hot Water Storage Tank with Two Coils
BA-ST 9022/9100 - 2FE
DHW
supply from the upper coil
hot water circulati on
return from the upper coil
supply of the lower coil
return from the lower coil
to sewerage
water supply system
1. BA-ST storage tank
2. Cut-off valve
3. Safety valve
4. Drain valve
5. Pressure reducer (opti on, if the pressure in the
system exceeds the allowable value)
6. Strainer
7. Hot water circulati ng pump
8. C/H circulati ng pump
9. Hot water expansion vessel
Fig. 9
Installati on diagram of the BA-ST storage tank with two coils.
4. CONNECTION AND START-UP
4.1 Connecti on
1. Remove protecti ng plugs from the connector pipes
2. Connect the hot water intake line (12).
3. Connect the cold water supply line together with the
required safety valves (19).
4. If the system has the hot water circulati on system, con-
nect it to the connector pipe (14). Otherwise, plug the
pipe.
5. Connect the supply (13) and return (16) of the heati ng
medium to the upper coil.
6. Connect the supply (17) and return (18) of the heati ng
medium to the lower coil.
1
2
2
2
2
2
2
2
2
2
2
6
6
6
8
7
8
3
9
4
5
4.2 Start-Up
Fill the storage tank with water and vent it aft er making cor-
rect connecti ons.
If there is an electric heati ng module installed in the
storage tank, fi ll the tank with water before connecti ng
it to the electrical installati on.
CAUTION
1. Open the cold water cut-off valve at the inlet and the hot
water intake point
2. Fill the storage tank unti l obtaining uniform water out-
fl ow at the hot water intake point. Close the intake points
3. Fill the upper and lower coils with the heati ng medium,
and vent them
4. Check ti ghtness of the enti re system
When properly fi lled and vented, the storage tank is ready to
use.
Aft er the installati on and levelling the tank, follow the proce-
dure below (for the connector pipe numbers, refer to Fig. 3
and Fig. 5):
Filling and venti ng the hot water storage tank:
Open the hot water intake valves before heati ng the
system up for the fi rst ti me or aft er a longer break in its
operati on in order to check whether the storage tank is
fi lled with water and the cut-off valve at the cold water
inlet is not closed.
CAUTION
4.4 Warnings and Practi cal Recommendati ons
• Check the operati on of the safety valve as described by
the manufacturer of the valve in order to check whether
it is not clogged.
• Clean the inside of the storage tank periodically. Cleaning
intervals depends on the hardness of the water present
in a given area.
• To ensure opti mum protecti on of the storage tank against
corrosion, we recommended checking the level of wear
of the isolated magnesium anode once a year.
We recommend the following:
4.3 Thermal Insulati on of the System
In order to minimize thermal energy losses, insulate all con-
nector pipes, pipelines and temperature sensor covers tho-
roughly aft er the installati on of the unit and performance of
the leak proof test. For this purpose, use thermal insulati on
of correctly selected thickness and thermal insulati on para-
meters.
Lack of thermal insulati on, its incorrect thickness or in-
sulati on made of inadequate materials will cause decre-
ase of thermal insulati on properti es of the unit and the
system.
Informati on
We recommend connecti ng the tank connector pipes
with the system lines by means of unions to allow discon-
necti on of the tank, if required.
Informati on
To prevent bacterial growth we recommend to make
sure a periodically increase of hot water temperature for
a shorter ti me at regular intervals e.g. every 14
th
day.
CAUTION
INSTALLATION AND OPERATING MANUAL
Summary of Contents for BA-ST 9022 - 2FE
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