9
MYDENS 60
COSMOGAS
4.1 - Operation and intended
use of the appliance
This product is a condensing gas appliance, intended for
the production of central heating. It can also be interlocked
to the production of domestic hot water for civil use, but
must be connected to a Indirect Water Heater (see fig. 4.7.).
Make the adaptation between boiler and plant, selecting the
characteristic residual head curve deemed most suitable
from those available (see fig. 4.2).
4.1.1 - Modulating pump
The MYDENS 60A boiler is built especially without the internal
pump, so that the installer can connect any pump, even the
modulating type.
The only precaution to take is that of introducing a by-pass
valve (see figure 4.5, detail “35”). This must be such, that the
boiler is guaranteed a minimum water circulation of 600 l/h in
any operating situation. The characteristic curve of the field
of modulation of the modulating pump we supply on request,
is given in figure 4.3.
4.1.2 - Hydraulic separating device
If the plant must be served by a water flow rate higher than the
pump can supply, a hydraulic separator must be positioned
between the boiler and the plant (see figures 4.6 and 4.7,
detail “20”).
4.1.3 - Production of domestic hot water
A Indirect Water Heater must be connected for the production
of domestic hot water, according to the layout in figure 4.7.
The temperature of the domestic hot water is adjusted
following the relevant procedure in chapter 7.8.
4.1.4 - Plant types
The following types of plants can be realised depending on
the model:
This boiler can only be used to realise a central heating plant
(see figures 4.5 and 4.6) or a plant for central heating and
the production of domestic hot water (see figure 4.7). In both
cases, the central heating plant can be high or low temperature
(see chapter 5.9 for adjustment of the boiler).
4.2 - Precautions during installation
Respect the following indications for good working order of
the appliance:
It must be attached to a central heating plant and eventually
to a domestic hot water distribution network, compatible
with the features, performance and powers of the appliance
itself.
Check figure 5.1 concerning the minimum safety distances
for installation and future maintenance.
4 - OPERATION
