COSMOGAS MYDENS, Инструкция по установке, эксплуатации и обслуживанию

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MYDENS
COSMOGAS
5.15 - Connecting the boiler to
indirect water heater with coil
Only the MYDENS -- B model boiler can be connected
to a indirect water heater with coil.
The hydraulic connection must be performed as per figure
5.12 (see also chapter 5.12).
Proceed as follows for the electric connection (refer to the
figure 5.10):
1.- disconnect the electric power supply from the boiler;
2.- lay a bi-polar electric able with minimum section of 1.5
mm², which goes from the appliance to the indirect water
heater temperature sensor and connect it to the boiler at
clamps “8” and “9” (SB);
3.- connect the other end of the cable to the indirect water
heater temperature sensor;
4.- introduce the temperature sensor inside the indirect water
heater sample point (see figure 5.12 detail “14”).
The MYDENS -- C model boiler can be connected to a
indirect water heater with coil also after installation. In
this case, a diverter valve must be envisioned outside
the boiler to fill the indirect water heater along with
setting parameter
3012
at the value of
1
.
The temperature of the water stored inside the indirect
water heater can be selected by the user in a range
between 40 and 70°C.
ATTENTION !!! A hot water temperature level
exceeding 51°C can cause permanent injury/damage to
persons, animals and objects.
Children, the elderly and disabled must be protected
against the potential risks of scalding, by introducing
devices that limit the temperature of use of domestic
hot water to utilities.
5.15.1 - Anti- legionella
If the boiler is connected to a indirect water heater for the
preparation of domestic hot water, a disinfection cycle is
envisioned against the legionella bacterium. This cycle
envisions taking the indirect water heater to a temperature
of 60°C (temperature at which the legionella bacteria dies)
at least every week. It is for this reason that the water (at
certain times) can reach the utilities at a higher temperature
that than set with the relative command.
ATTENTION !!! A hot water temperature level
exceeding 51°C can cause permanent injury/damage to
persons, animals and objects.
Children, the elderly and disabled must be protected
against the potential risks of scalding, by introducing
devices that limit the temperature of use of domestic
hot water to utilities.
Figure 5.12 - hydraulic connection to BWR C type
indirect water heater or general indirect water
heater with coil
1 MYDENS -- B boiler
2 -
3 -
4 Gas supply
5 D.H.W. recirculation connection (optional)
6 Connection for filling central heating plant
(by the installer)
7 BWR C indirect water heater or general indirect water heater
with coil
8 Domestic hot water outlet
9 Cold water inlet
10 Supply and return for indirect water heater filling
11 Hydraulic safety unit (by the installer)
12 Supply to the central heating plant
13 Return from the central heating plant
14 Temperature sensor sample point
5 - INSTALLATION