Structure And Operation - hajdu PT Serie Gebrauchsanweisung

DEAR BUYER,
Depending on their layouts,
buffer tanks can be operated
from several different energy
sources: indirectly from solar en-
ergy, or gas-based, coal-based or
other based energy carriers (i.e.
auxiliary electric heating). Paying
attention to these usage instruc-
tions, you are kindly asked to
turn to a professional technician
to perform the connection of the
appliance in the heating circuit
and to put into operation the ap-
pliance for the first time. Please
read these installation and oper-
ation instructions carefully and
follow the instructions precisely.
In this manner, you can ensure
that your unit will operate in a re-
liable way during a long time.

STRUCTURE AND OPERATION

The buffer tanks are composed of
a steel tank, soft polyurethane
foam insulation,
sheath and a cover. The tank and
the heating pipe coil are made of
St37-2 steel.
As the internal surface of
buffer tanks contain no corro-
sion protection, they can only
be filled up with heating wa-
ter. They are not adequate for
storing drinking water!
The insulation of the tanks is pol-
yurethane foam of thickness of
max. 100 mm; and their sheath
is made of plastic/leatherette.
Both the sheath and the insula-
tion are mountable (over 500 liter
capacity), so the tank can be
fixed into its operation position
through their removal (as well).
Without its insulation, the largest
tank can be carried through the door
of size 800 mm. Combined buffer
tanks (PT_CF) provide sanitary hot
water in an instantaneous way, heat-
ing cold water through the wall of the
flexible pipe of stainless steel. How-
ever, a simple buffer tank system (PT)
combined with an indirect tank is also
able to produce hot water, either di-
rectly from the heat production unit or
from energy gained from the buffer
tank. The soft polyurethane foam sur-
rounding the internal tank keeps the
water at given temperature for a long
time, without any energy intake.
Type selection:
Buffer tanks are sold in standing
forms, with volumes of 300, 500, 750
and 1000 litres, in "empty" (PT) ,
"pipe coil" (PT_C) and "combined"
(PT_CF)
tanks (PT types) contain 9 pipe
branches for connection of heat pro-
ducing units and heat expenditure
leatherette units and they contain 1/2" sensor
pipe branches. Buffer tanks with pipe
coil (PT_C types) contain a heat ex-
changer for direct connection of solar
systems or systems with heat pump.
In addition to features described
above, combined tanks (PT...CF types)
contain a flexible pipe of stainless
steel to produce sanitary hot waterThe
most important external and connec-
tion sizes of the appliances are de-
scribed in Table 1 and in Figures 1 and
2 below.
Operation target
Buffer tanks work as energy storages
for heating systems. They balance
timely discrepancies between heat
production (or available energy) and
heat need, thus ensuring conven-
iences.
17
layouts. "Empty" buffer