23
MYDENS
COSMOGAS
5 - INSTALLATION
5.14.5 - CR04 remote time control (on
request)
The CR04 remote time control, is a room thermostat
capable of interacting with the appliance, adjusting the room
temperature in a modulating manner and not by steps. This
device is a real heat regulator capable of operating with the
outdoor temperature sensor and, therefore, of adjusting the
room temperature in an optimum manner.
Install the CR04 remote control in a place in the house
where the temperature is the most characteristic of the home
and, however, in an area that is
not
subjected to repeated
temperature changes, away from windows or doors which
open directly to the outside (Figure 20).
When not otherwise specified, refer to Figure 19.
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;
f
WARNING!!! Cables being subjected to a very
low safety voltage (24 VDC), so they must flow in
wires different from the 230 VAC power supplies.
3. - Connect the two ends of the cable to the “TA” clamps
(Figure 19);
4. - Connect the other two ends of the cable to the terminals
on the remote control (follow the instructions in the
CR04 manual).
l
Once the CR04 remote control has been connected,
all the room temperature adjustments and domestic
hot water temperature operations must be carried out
directly on the remote control. Remember to follow the
instructions in the CR04 remote control manual carefully.
5.14.6 - Installing the outdoor
temperature sensor (on request)
Install the outdoor temperature sensor outside the building
on a wall facing NORTH or NORTH-EAST, at a height of
between 2 metres and 2.5 metres from the ground. For
buildings with several floors, it must be installed at about half
way up the second floor. Do not install it above windows,
doors or ventilation outlets or directly below balconies or
gutters. Do not plaster over the outdoor temperature sensor.
Do not install the sensor on walls without eaves, i.e. where
not protected from rain.
Where the temperature sensor is installed on a wall that
has yet to be plastered, it must be installed with a suitable
thickness or be removed before plastering.
Proceed as follows to connect the outdoor temperature
sensor cable:
When not otherwise specified, refer to Figure 19.
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. - Lay the electric cable through the fairlead near the “SE”
contacts;
f
WARNING!!! Cables being subjected to a very
low safety voltage (24 VDC), so they must flow in
wires different from the 230 VAC power supplies.
4. - Connect the bipolar cable to the “SE” clamps (Figure
19);
5. - Connect the bipolar cable to the ends of the outdoor
temperature sensor;
6. - Set parameter
2001
to
1
or
2
(section 7.16)
according to the type of outdoor reset desired (section
7.10);
7. - An icon shows on the display
to confirm that the
outdoor temperature sensor has been enabled;
8. - Set the correct adjustment values for the supply
temperature, according to
the outdoor temperature (section 7.10.3);
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