COSMOGAS MYDENS, Installation, Use And Maintenance Manual

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10
MYDENS
COSMOGAS
4.1 - Operation and intended
use of the appliance
This product is a condensing, gas appliance, intended for
the production of central heating and domestic hot water for
civil use.
Make the adaptation between boiler and plant, selecting the
characteristic residual head curve deemed most suitable
from those available (see fig. 4.4 and 4.5).
The max. useful power is always guaranteed at the
production of domestic hot water as the central heating
service switches off at every request for domestic hot water.
The temperature of the domestic hot water is adjusted
following the relevant procedure in chapter 7.8.
The following types of plants can be realised depending on
the model:
A) - MYDENS -- “P”. With this boiler it is possible to realise
a plant for the production of instantaneous domestic hot
water and a central heating plant with the heating elements
operating at a temperature between 30°C and 80°C. An
example of this type of plant is given in fig. 4.1.
B) - MYDENS -- “B”. With this boiler it is possible to realise
a plant for the production of domestic hot water via a coil-
type storage indirect water heater and a central heating
plant with the heating elements operating at a temperature
between 30°C and 80°C. An example of this type of plant is
given in fig. 4.2.
C) - MYDENS -- “C”. With this boiler it is possible to realise
a plant for central heating only with the heating elements
operating at a temperature between 30°C and 80°C. An
example of this type of plant is given in fig. 4.3.
This model can be connected to a indirect water heater
with coil also after installation, filled via a diverter valve or a
pump outside the boiler.
In all of the boiler versions previously described, the
connection of the domestic hot water service is not
indispensable; if the boiler is used for central heating only,
just connect the cold water pipe to fill the central heating
plant and close the d.h.w. outlet fitting.
All boiler versions previously described, can be connected
to a room thermostat for adjustment of the central heating.
To perfect the quality of the heating service, an external
temperature sensor can be connected (climatic adjustment)
to automatically adjust the supply temperature depending
on the external temperature. In this case, the room
temperature can perform an ON /OFF type of compensation
of the room temperature or in two steps.
For further information regarding climatic adjustment, refer
to chapter 7.11.

This appliance 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.

Before installation the central heating plant and the
domestic hot water plant must be washed thoroughly in
order to remove any residues or impurities, which could
compromise the good working order of the boiler.

This appliance is not envisioned for installation outdoors.
It must not be exposed to temperatures below zero and
temperatures above 50°C. Selected a place sheltered
from atmospheric agents and freezing.

This appliance must be installed in a location where any
loss of water from the same, the connections between
the pipes or from the safety valve drain, cannot cause
damage to materials or objects below.

Check figure 5.1 concerning the minimum safety
distances for installation and future maintenance.
4 - OPERATION