Fantini Cosmi CH115RF User manual

CH115RF
ELECTRONIC ROOM THERMOSTAT

2
Technical data ..........................................................9
Table of Contents
Introduction ..............................................................3
Controls and indications ..........................................3
Controls .............................................................3
Indications .........................................................4
User’s manual .........................................................4
Summer / Winter Selection ................................5
Operating modes ...............................................5
“Comfort” operating mode .................................5
“Economy” operating mode ...............................6
“OFF” Function (OFF / Antifreeze) ..................6
Maintenance ............................................................7
Installation ...............................................................7
Fastening the base ............................................7
Fastening the thermostat onto the base ............8
Fitting and replacing the batteries .....................8
CH173D self-learning procedure .......................8

3
Introduction
The CH115RF is a three-temperature thermostat sui-
table to control the room temperature both in heating
and in air-conditioning operating conditions. These
controls are sent to the CH173D actuator, supplied
separately, that communicates in radio-frequency
with the CH115RF.
The CH115RF is powered by two AA 1.5V batteries
and is suitable to remotely control a relay. The ther-
mostat measures the room temperature through an
internal probe and keeps the “set point” by controlling
the relay switching on and off.
The wide display shows the measured room tempe-
rature, the current program and the selected season.
Three operating modes (Comfort, Economy and
OFF/Antifreeze) are available and the user can select
to operate the thermostat with the heating function
(Winter) or the air-conditioning function (Summer).
Settings and data are stored in a non-volatile memory
suitable to retain them even when batteries are not
tted.
The thermostat comes in three colors: white, Silver
(CH116RF) and anthracite Black (CH117RF).
Controls and indications
Controls
5
1
2
3
4
1. Set point increase key
2. Set point decrease key
3. Comfort/Economy switch key
4. OFF key
5. Thermostat reset key
Key combinations
(pressed simultaneously)
1+2 Celsius/Fahreneit switch
3+4 Summer/Winter switch

4
1
2 3 4 5 6 7
8
Indications
1. Measured temperature
2. Comfort symbol
3. Economy symbol
4. Summer symbol
5. Winter symbol
6. System ON in summer operation
7. System ON in winter operation
8. Low battery charge
User’s manual
First of all, make sure that the self-learning procedure
has been performed yet (page 8); moreover, verify
that both the CH115RF and the CH173D are 30 me-
ters far from each other at the most In fact, this dis-
tance represents the free air maximum range for the
radio frequency modules used by the thermostat and
the actuator. Please note that the range will decrease
if obstacles are found between the CH115RF and the
CH173D.
To start the thermostat after having installed it, pro-
ceed as follows:
1. Select Summer / Winter operation.
2. Select the operating mode.

5
Summer / Winter Selection
To switch from Winter operation (i.e.: heating system)
to Summer operation (i.e.: air-conditioning system),
and vice versa, press the 3+4 key combination simul-
taneously. The selected operation will be shown on
the display by the “Winter” or “Summer” icons.
TOP COVER
Winter Summer
THERMOSTAT
FRONT SIDE
Operating modes
The CH115RF thermostat features three different
manual operating modes: Comfort, Economy and the
OFF function (OFF/Antifreeze).
“Comfort” operating mode
With the “comfort” operating mode (key 3, Comfort
symbol), the thermostat regulates the heating or air-
conditioning system operation in order to keep always
the same comfort temperature set.
The comfort temperature set point may be changed
during operation by means of keys 1 and 2. Tem-
perature may be changed from 2 to 40 °C, by 0.1 °C
steps.

6
“Economy” operating mode
With the “economy” operating mode (key 3, Economy
symbol), the thermostat regulates the heating or air-
conditioning system operation in order to keep always
the same economy temperature set.
The economy temperature set point may be changed
during operation by means of keys 1 and 2. Temper-
ature may be changed from 2 to 40 °C, by 0.1 °C
steps.
“OFF” Function (OFF / Antifreeze)
The “OFF” function is obtained by pressing key 4: in
this case the thermostat performs thermoregulation
on the antifreeze temperature set.
The display will show the message “OFF”.
In Winter mode, the antifreeze set point value may be
changed from 0.0 to 7.0°C by means of keys 1 and
2, by 0.1°C steps.
To quit the OFF function press key 3.

7
Conguration menu
By means of a pointed object, press the reset button
while simultaneously pressing the button .
When the display shows P01 (rst parameter), re-
lease the button .
The conguration parameters are represented on the
display by an index: P01, P02 …
Scroll through the indexes of the parameters by
pressing the buttons and .
Changing a parameter
Press the button to change a parameter. Change
the value of the parameter by pressing the buttons
and . To return to the indexes of the parameters,
press again the button .
To exit the parameters conguration, press the
buttons and until the displays shows “END”.
Press the button .
If no button is pressed for 1 minute, the thermostat
exits the parameters conguration.

8
Parameter Default value Values
P01 Display modes 1 1 = ambient Temp. display
2 = set point display
P02 Displayed temperature value correction 0.0°C +/- 4°C (pitch 0.1°C)
P03 Lower limit of the winter set point 2.0°C 2.0°C … 40.0°C (pitch 1.0°C)
P04 Upper limit of the winter set point 40.0°C 2.0°C … 40.0°C (pitch 1.0°C)
P05 Lower limit of the summer set point 2.0°C 2.0°C … 40.0°C (pitch 1.0°C)
P06 Upper limit of the summer set point 40.0°C 2.0°C … 40.0°C (pitch 1.0°C)
P07 Differential adjustment 0.3°C
0.3°C … 2.0°C* (passo 0.1°C)
End Parameters saving and exit from parameters
conguration mode
*0.3°C for low thermal inertia systems, 2.0°C for highly reactive systems

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If, with the writing “End” on the display, you press simultaneously the keys + + , you enter the conguration
menu, used to manage the radio connection:
Parameter Default value Values
P08 Not used in CH115RF 1 1
P09 Upper part radio address (MSB).
If there are conicts for multiple CH115RF,
allows changing the radio address assigned
in production.
Performing a reset by pressing the keys “ar-
row up”+”OFF”, restores the address assig-
ned in production (MSB+LSB).
Progressive assigned
in production
0 … 255
P10 Lower part radio address (LSB). as above. “ “ 0 … 255
P11 Transmitter test.
Minutes of continuous ignition of the
transmitter.
0 0 … 30 minutes (pitch 1 minute)

10
Maintenance
To clean the thermostat use just a soft cotton cloth
and no detergent.
Installation
Thermostat installation operation sequence:
• Fastening the base.
• Fastening the thermostat onto the base.
• Fitting and replacing the batteries.
• CH173D self-learning procedure.
Caution: The thermostat shall be installed by quali-
ed personnel only, in compliance with the current
regulations in force.
Fastening the base
The thermostat comes with a base suitable for wall
mounting or for ush-mounting in three-module (503)
rectangular or round boxes.
SCREWS
BATTERY
COMPARTMENT
FASTENING
HOLES
MULTI-POLE
CONNECTOR
SPACING DIMENSIONS FOR FIXING THE BASE
Remove the top cover of the thermostat.
Separate the base from the thermostat front by re-
moving the screws by means of a proper tool and tak-
ing the front part off.
Fasten the base to the required surface by means of
the fastening holes provided for the purpose; make
sure the base is properly secured, without deforma-
tions and that the multi-pole connector is located at
right bottom corner.