Vimar 02952 Installer Manual page 37

Thermostat
FAQ
47. Is it possible to have a Boost function to supplement the
heating? And will this make it possible to determine the
3 speeds of the fan coil?
The section of the parameters referred to as "2
COOLING STAGE" illustrates how the thermostat is able to
activate an additional system, which will only be on/off, or
a control of a proportional valve 0-100% by means of the
objects Nos. 36 and 37 which will appear by activating this
Boost function. The thermostat is not able to manage the
Boost function by determining the speeds with 3 relays so
either it will be on/off or proportional 0-100% (whose possi-
ble value is either 0% for power-off or 100% for fully open).
48. Is it possible to operate an on/off head in winter and a
3-speed fan coil in summer?
Yes, it is possible to control the underfloor heating and fan
coil air-conditioning simply by setting the system type to 4
pipes; the communication object no. 35 will then be dis-
played for the on/off control of the heating valve and object
no. 34 for the on/off control of the cooling valve (in winter
the fan coil valve-relay is not activated, as it is controlled
by object no. 34 of the thermostat, so the fan coil will not
switch on).
49. Is it possible to have the thermostat 02952 send a 1
bit ON message when the thermostat turns off all the
speeds?
Yes, and this function is required by some temperature con-
trol gateways to manage the Off of the fan coils when the
thermostat has switched off the speeds: the communication
object is No. 45 (No. 92 for Thermostat B) called "OFF - Fan
outputs" and the thermostat automatically sends a bit=1
when the fans are turned off and bit=0 when they are turned
back on.
50. If the speeds of the fan coils are forced to OFF, will the
thermostat reset to AUTO when it changes mode or
simply when Well-contact Suite queries the room pock-
et to know whether the guest is present in the room?
When Well-contact Suite queries a pocket it responds with
a bit equal to 0/1 on the same control group as the CMF/
STBY mode of the thermostat causing the mode control to
be sent again. The thermostat is designed to reset forcing
when it receives a mode control so it eliminates the forc-
ing-OFF of the fans; to work around this problem, in the ETS
project you can remove the "U" flag of the object of CMF/
STBY and reprogram the thermostat so that the response
sent from the pocket to the Well-contact Suite software is
ignored.
51. Is it possible for the icon not to appear on the bottom
left that allows viewing and controlling thermostat B?
Yes. For the icon not to be displayed it is sufficient to set
the "Enable user interface" parameter of thermostat B to
DISABLE.
52. How does the "Neutral Zone" mode function for a 4-pipe
system?
If the "Enable Summer/Winter" object of thermostat A and/
HEATING/ or thermostat B is not paired with any ETS group, the
nd
thermostat in question will function in Neutral Zone mode;
in this mode it will be the thermostat that activates the Air-
Conditioning or Heating circuit depending on the room tem-
perature, the Summer and Winter setpoints for the currently
selected mode (CMF/STBY/etc.) with a room temperature
range, called Neutral Zone, within which neither circuit will
be activated. If the end user increases or decreases the
setpoint by using the thermostat it will not change the two
summer/winter setpoints but will change a setpoint that is
halfway between those two values which is the central ref-
erence of the neutral zone; raising or lowering this value will
also automatically increase or decrease the two setpoints
related to summer/winter for the active mode (CMF/STBY)
so as to keep the neutral zone unchanged. The thermostat
activates the heating or air-conditioning according to the
two summer/winter setpoints so, if the room temperature
is not in the neutral zone, the thermostat will take as refer-
ence the setpoint that is closest to the current temperature
(summer/winter) resulting in the activation of the heating or
air-conditioning circuit.
53. What is the difference between firmware version 2.00
and 2.01?
Firmware version 2.01 features improved neutral zone func-
tionality and checks have been added to prevent incorrect
configurations of the thermostat. The "Don't display tem-
perature" view has been replaced by the "Current Setpoint"
view. The "Reduced menu" feature has been added which
limits the local mode change to only between comfort and
protected. Lastly, the "Reset Setpoint Shift in Economy
Mode" parameter has been added to enable or disable
resetting the setpoint shift when the thermostat goes into
energy saving mode.
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