COSMOGAS MYDENS, Installation, Use And Maintenance Manual

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MYDENS
COSMOGAS
Figure 8.16 - Central heating circuit drain cocks
8.16 - Emptying the appliance on
the domestic hot water side
To empty the appliance from the central heating side,
proceed as follows:
1.- generate a central heating request;
2.- set the central heating temperature at the lowest value
possible, with the purpose of cooling the water inside the
boiler;
3.- switch the boiler off;
4.- access the internal components following chapter 8.2;
5.- connect a flexible hose to the drain cocks “A” and
“B”(see figure 8.16) and convey it onto the drain of a
washbasin or similar;
6.- open the drain cocks “A” and “B” (see direction of
rotation in figure 8.17);
7.- open the central heating elements bleed valves. Start
from the highest central heating elements and continue
with the lowest.
8.- once all of the water has been evacuated, close all of
the heating element vent valves and the drain cocks “A”
and “B” in figure 8.16.
ATTENTION !!! It is prohibited to recover and/
or re-use the water evacuated from the central heating
circuit for any purpose; this could be polluted.
8.17 - Emptying the appliance on
the domestic hot water side
To empty the appliance from the domestic hot water side,
proceed as follows:
1.- close the main cold water supply cock in the house;
2.- open all hot and cold water taps around the home;
3.- make sure that at least one of these is at a height below
the level of the boiler.
8.18 - Fan
Switch-on of the fan only can be generated, accessing the
parameter
2010
situated inside the “Installer menu” (see
chapter 7.18) and set it on
FAn.
To go back to normal
operating conditions, set parameter
2010
again to
0FF.
8.19 - Minimum and maximum power
Appliance operation can be forced to its own minimum,
maximum, adjusted or ignition power. Proceed as follows:
1.- make sure that any cocks and thermostatic valves
downstream from the central heating circuit are open;
ATTENTION !!! During forcing of the delivery
temperature, it automatically goes to 93°C to give the
possibility to dispose of as much of the heat generated
by the boiler as possible. Check that the central
heating plant can support this temperature.
2.- access parameter
2010
found in the “installer menu”
(see chapter 7.18);
3.- set the parameter
2010
at the following value:
a)
LOu
to force the boiler to minimum power;
b)
Ign
to force the boiler to ignition power;
c)
HIgH
to force the boiler to maximum power;
d)
rEg
to force the boiler to the maximum central heating
power, as adjusted (Range Rated) in chapter 6.9,
parameter
2002
.
4.- To end forcing, take the parameter
2010
to the
0FF
e
premere il tasto RESET.
ATTENTION !!! If during forcing, the power
supplied by the boiler is much higher than the
power absorbed by the plant, the boiler switches off
continuously to reach the maximum temperature
allowed (93°C).
8 - MAINTENANCE
B A
020002.01.038
B A
Figure 8.17 - Cocks opening and closing direction
A = Open
B = Closed