27
MYDENS
COSMOGAS
5 - INSTALLATION
5.16 - Connecting the appliance to a
tank with coil
The “B” version (for tank) must be connected to coil-type
indirect water heater for the production of domestic hot
water (see section 5.16).
Proceed as follows for installation:
1. - Use a bipolar cable, with a minimum cross-section of
1,5 mm²;
2. - The maximum length allowed is 20 metres, for lengths
exceeding 100 metres use a shielded cable with shield
earthing;
3. - Connect the 2 end of the cable on clamps “SB" (Figure
19);
4. - Connect the other end of the cable to the tank
temperature sensor;
5. - Insert the temperature sensor inside the indirect water
heater sample point (“14” Figure 24);
6. - Set parameter
2035
=
1
;
7. - Set parameter
2038
=
10
;
The "C" model appliance can be connected to a tank with
coil also after installation. In this case, a diverter valve must
be installed external to the appliance.
The temperature of the water stored inside the tank can
be selected by the user from a range of between 40°C and
60°C.
a
WARNING!!! A water temperature higher
than 51°C can also cause permanent damage to
people, animals and objects. Above all, children,
the older people and people with disabilities must
be protected against potential risks of scalds, by
inserting devices that limit the temperature of the
water.
5.16.1 - Anti-legionella
If the appliance is connected to a tank for the preparation
of domestic hot water, a disinfection cycle is used against
legionella bacteria. This cycle involves bringing the tank to
60°C (temperature at which the legionella bacteria dies),
2 hours after the appliance was connected to the power
supply and at least every week. It is for this reason that the
water may (at certain times) reach the utilities at a higher
temperature than that set with the relevant command.
a
WARNING!!! A water temperature higher
than 51°C can also cause permanent damage to
people, animals and objects. Above all, children,
the older people and people with disabilities must
be protected against potential risks of scalds, by
inserting devices that limit the temperature of the
water.
Figure 24
1 - Appliance model B
4 - Gas supply
6 - Filling the central heating system
7 - Generic tank with coil
8 - Domestic hot water outlet
9 - Cold water inlet
10 - Supply and return for tank filling
11 - Hydraulic safety unit
12 - Supply to the central heating system
13 - Return from the central heating system
14 - Tank temperature sensor (standard for mod. “B” only)