Dhw Mixing Valve; Circulation Pumps; Domestic Hot Water Storage Tank Unit - Immergas HERCULES Solar 26 1 A Instruction Booklet And Warning

1.18 DHW MIXING VALVE.

The thermostatic mixing valve mixes the cold
PL
water with the hot water and via an internal wax
element, sensitive to the temperature, automati-
cally controls the temperature of the mixed water
CZ
set by the user.
N.B.: for excellent management of the tempera-
tures, the mixing valve must be set by the installer
at a safety temperature required by the user. The
HU
DHW output temperature can also depend on
the value set on the boiler, however, the DHW
temperature upper limit value is always deter-
mined by the position of the mixing valve: knob
RO
position 1 = 42°C, 2 = 48°C, 3 = 54°C, 4 = 60°C
(as per standard) (the values indicated refer to a
storage tank with water at 70°C).
IE
Any release of the three-way mixing valve. If
after a long period of inactivity the three-way
mixing valve is blocked, it is necessary to act
manually on the knob positioned on the top of
SK
the same in a way to release the shutter of the
valve itself.

1.19 CIRCULATION PUMPS.

The "Hercules Solar 26 1 A" range boilers are
supplied with 2 types of pump, both with variable
speed adjuster.
These settings are suitable for most systems.
• System and solar system pump. They have
3-position electric speed control. The pumps
are already supplied with condenser:
- the boiler does not operate correctly with the
circulation pump in first speed. For optimal
boiler functioning of the boiler, use the pump
at maximum speed (max. head).
- solar pump, must be set according to requi-
132
SOLAR CIRCUIT DRAINING VALVE
rements of the solar circuit.
Any release of the system and solar pump. If
the pump should be blocked after a long period
of inactivity, it must be released. Loosen the
front cap, making sure that the liquid that esca-
pes cannot cause injury/damage to persons/
objects and turn the motor shaft very carefully
using a screwdriver so as not to damage the
latter. Once the pump is released, close the vent
cap.
• Zone 1 pump. The speed selector switch is
factory-set in the position marked with a dot.
Whenever performance is insufficient, progres-
sively increase the value set. If performance
should be excessive or noise occurs due to the
speed of the circulating fluid, reduce the spe-
ed progressively. Modify pump performance
(head) by turning the potentiometer on the
pump using a flat screwdriver.
Diagnostics. The pump is equipped with a LED
indicator that supplies information regarding
the functioning status of the same.
- Green light: indicates correct functioning.
- Flashing green light: the LED indicates that
the pump is modulating its performance
during a setting change.
- Red light: the pump is blocked.
Pump release. If the pump should be blocked
after a long period of inactivity (Red LED on),
it must be released. Turn the speed selector
switch positioned on the pump at will to start
the automatic release process (Flashing green
LED), repeat the operation several times. If
the problem persists, remove the power supply
from the boiler, leave the pump to cool, loosen
the front cap, making sure that the liquid
STORAGE TANK UNIT DRAINING VALVE
that escapes cannot cause injury/damage to
persons/objects and turn the motor shaft
very carefully using a screwdriver so as not to
damage the latter. Once the pump is released,
close the vent cap and re-set the selector switch
in the correct position.
1.20 DOMESTIC HOT WATER STORAGE
TANK UNIT.
The "Hercules Solar 26 1 A" boiler is the ac-
cumulation type with a capacity of 200 litres.
It contains large coiled stainless steel heat ex-
changer pipes, which allow to notably reduce
hot water production times. These storage tank
units constructed with stainless steel casing and
bottoms, guarantee long duration through time.
The assembly concepts and welding (T.I.G.) are
implemented to the minimum detail to ensure
maximum reliability.
The upper inspection flange ensures practical
control of the storage tank unit and the coiled
heat exchanger and easy internal cleaning.
The DHW and the DHW pump connection cou-
plings are positioned on the lid of the flange (cold
inlet and hot outlet). The Magnesium Anode
holder cap including the same, supplied as per
standard for the internal protection of the storage
tank from possible corrosion, is positioned on the
side of the cylinder (part. 55 Fig. 1-23).
Cylinder removal (Fig. 1-21). For easy main-
tenance or particular handling requirements,
remove the cylinder as described below.
To disassemble the storage tank unit, empty the
boiler system by acting on the relevant drain
fitting. Before carrying out this operation, make
sure that the system filling valves are closed.
SYSTEM DRAINING VALVE
Fig. 1-21