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7  -  STANDARD CONTROL OPERATIONS AND OPTIONS

7.6  Built-in DHW and space heating control 

AQUACIAT

CALEO

 units are specially designed to optimise the 

operation of heating installations that require hot-water production 

for  traditional  heating  (SHC)  and  domestic  hot  water  (DHW) 

requirements.

Connect Touch permits constant and automatic optimisation 

of the unit:

•  Control of a three-way directional on/off valve based on 

the heating or domestic hot water requirements (3-way 

valve used to switch between Space Heating Control and 

Domestic Hot Water). By default, the unit is operating in 

Space Heating mode.

•  Control of the electric heater stages can complement the 

heating loop (1 to 4 electric heating stages). 

See section 

7.7.2

7.6.1  Heating or domestic hot water mode

The three-way valve permits switching the heating capacity to 

a heating circuit (fan coil units, radiators or floor heating), or to 

a domestic hot water tank. If the unit is in domestic hot water 
production mode, a “DHW” message is displayed on the user 

interface next to the current operating mode.

The unit requests changeover to DHW mode provided that 

both water tank conditions and unit conditions are met:

•  Water tank conditions:

•  “DHW Request Input” volt-free contact is closed or 

“DHW Tank Temperature” is below “DHW Setpoint” 

AND

•  The third timer program (schedule 3) is set to occupied 

(DHW mode requested) and the anti-legionella 
program is not requested (see section 

5.9

).

•  Unit conditions:

• 

Summer mode is active (space heating is not required) 

OR

• 

Summer mode is NOT active and the minimum SHC 
operating time and the maximum DHW operating time 
parameters allow for that (service-configured parameters).

NOTE: Domestic Hot Water schedule can be activated 

regardless of the current operating mode (Local/Remote/Net).

Based on the operating mode (SHC or DHW) the water setpoint 

is adjusted:

•  In heating mode, hsp1 and hsp2 are used. They can be 

modified by user reset (see section 7.5.2

).

•  In domestic hot water production mode, DHW setpoint is 

used. No setpoint reset is used.

The unit requests changeover to the heating mode if at least one 
of the following conditions applies:

•  The volt-free tank request contact is open.
• 

The maximum operating time for the DHW mode has 

elapsed.

•  Time schedule 3 is in an unoccupied period  

(DHW mode not requested).

If a mode change is requested while a compressor is operating, 
it is stopped before the three-way valve changes to the new 
mode, and then the unit is re-started.

7.6.2  Anti-legionella

Water storage tanks where the water may stagnate for some 
time could create the environment allowing for the growth of 
legionella bacteria. To prevent the risk of legionella growth in the 
hot water tank, the control performs the anti-legionella treatment 
which means that water temperature is increased until it reaches 
the Anti-Legionella setpoint (legionella bacteria do not survive in 
temperature at 60°C).

The anti-legionella program can be activated automatically via 
the schedule setting. To activate the anti-legionella program, 
the installer should set the fourth timer program (schedule 4). 
The water tank temperature is increased until the anti-legionella 
setpoint [leg_sp] is reached or a 6-hour period has elapsed. 
The program cannot be activated more than once within 
6 hours. For more information about setting the anti-legionella 
schedule, see section 

5.9

.

7.6.3  Summer mode

The Summer mode is used to control Domestic Hot Water mode. 
When the Summer mode is active, space heating is not required, 

and the unit can increase the water temperature in the water tank 
in order to provide hot domestic water.

The Summer mode can be activated only when the outdoor air 
temperature  exceeds  the  predefined  Summer  OAT  threshold 
(“Maximum OAT Threshold”).

To set Summer OAT threshold

1. Navigate to the Configuration menu.
2. Select 

Heat/Cool Configuration 

(HCCONFIG).

3. Set

 Maximum OAT Threshold 

[max_th].

Maximum OAT Threshold [max_th]
5 to 100°C

100°C

The  Summer  mode  will  end  when  the  outdoor  air  temperature 
drops  below  the  predefined  Summer  OAT  threshold  -  2K, 
e.g.  if  the  Summer  OAT  threshold  is  set  to  20°C,  the  Summer 

mode will end as soon as the outdoor air temperature reaches 

the temperature of 18°C. 

NOTE: When the Maximum OAT Threshold parameter is 

set to an unreachable value, e.g. 100°C, then the Summer 

mode will be disabled.

 

 

EN - 23 AQUACIAT

CALEO

Summary of Contents for AQUACIAT CALEO CONNECT TOUCH

Page 1: ...Instruction manual AQUACIAT CALEO 14 300 02 2018 10199 CONNECT TOUCH...

Page 2: ...he user interface provided in this manual include text in English After changing the language of the system all labels will be in the language selected by the user Please read all instructions prior t...

Page 3: ...ouch buttons 5 4 4 Menu structure 6 5 SETTING UP CONNECT TOUCH CONTROL 7 5 1 General description 7 5 2 Welcome screen 7 5 3 Synoptic screen 7 5 4 Unit start stop 7 5 5 Display settings 8 5 6 Main menu...

Page 4: ...power source RISK OF BURNS Electrical currents may cause components to get hot Handle the power cable electrical cables and conduits terminal box covers and motor frames with great care 2 1 Control sy...

Page 5: ...d to monitor the water pressure The pump is protected against cavitation low pump entering pressure 3 5 Temperature sensors Temperature sensors constantly measure the temperature of various components...

Page 6: ...sed to control the pump and unit operation open pump continues to run closed pump is stopped unit is not allowed to start DHW Tank Request Switch SIOB DI 06 63 64 Used to command the domestic hot wate...

Page 7: ...ernet connector 3 Modbus RS485 connector 4 Internal bus RS485 5 Power supply connector 24 VAC This RS 485 bus can be used as a second internal bus for the connection of gateway If it is the case then...

Page 8: ...Configuration User Configuration Pump Configuration Date Time 0 10V Pump Config Heat Cool Config Control Identification Schedule Configuration menu Main menu ModbusRTU Config ModbusTCP IP Config Netwo...

Page 9: ...ng the table content ACCESS DENIED Equipment controller denies access to one of the tables LIMIT EXCEEDED The value entered exceeds the parameter limit Save changes Modifications have been made The ex...

Page 10: ...tem allows users to add new languages to the control To learn more about language customization please contact your local service representative 5 5 2 System of measurement The control offers the poss...

Page 11: ...modifiable parameters such as pump configuration schedule menu etc The Configuration menu is password protected To access the Configuration menu press the Main menu button located in the upper left pa...

Page 12: ...HEDULE 3 Go to OCCPC01S 4 Select appropriate check boxes to set the unit occupancy on specific days 5 Define the time of occupancy 6 When the time schedule is set the selected period will be presented...

Page 13: ...the unit cannot be started stopped via the web interface All other operations including monitoring unit parameters or unit configuration can be performed via the web browser interface 5 10 2 Web brow...

Page 14: ...t selection 5 0 Auto 1 Spt1 2 Spt2 0 Auto schedule control 1 Heating setpoint 1 2 Heating setpoint 2 6 SP_OCC no yes Setpoint Occupied Setpoint occupancy status 7 CHIL_S_S disable enable Net Cmd Start...

Page 15: ...kPa Eco Suction Pressure Economizer suction pressure 4 5 INTERNAL HYDRONIC MODULE Internal hydronic module 6 W_P_IN kPa Inlet Water Pressure Inlet water pressure Displayed in French by default Setpoi...

Page 16: ...utput 17 ALARM off on Alarm Relay Status Alarm relay status 18 RUNNING off on Running Relay Status Running relay status 19 DHW_3WV off on DHW 3 Way Water Valve DHW 3 way water valve Displayed in Frenc...

Page 17: ...splayed in French by default Domestic Hot Water Menu DHW_STAT No Name Status Default Unit Displayed text Description 1 dhw_mode 0 to 2 Mode Mode 2 0 SHC 1 DHW 2 AntiLeg 0 Space Heating Control SHC 1 D...

Page 18: ...de additional features some tables may contain parameters that cannot be configured for a given unit General Config Menu GENCONF No Name Status Default Unit Displayed text Description 1 ramp_sel no ye...

Page 19: ...set Value OAT max reset value 3 dt_hr_no 0 to 14 0 K Delta T No Reset Value Delta T no reset value 4 dt_hr_fu 0 to 14 0 K Delta T Full Reset Value Delta T max reset value 5 I_hr_no 0 to 20 0 mA Curren...

Page 20: ...tware version 4 xx chars MAC address Serial Number Serial number MAC address Displayed in French by default 0 10V Pump Config Menu FLOWCONF No Name Status Default Unit Displayed text Description 1 log...

Page 21: ...Parity High 4 Force Parity High 17 stop_bit 0 to 1 0 Stop bit Stop bit 18 0 One Stop Bit 0 One Stop Bit 19 1 two Stop Bits 1 Two Stop Bits 20 real_typ 0 to 1 1 Real type management Real type managemen...

Page 22: ...y can never exceed the limit setpoint activated by these contacts The limit setpoints can be modified in the SETPOINT menu By setting DEM_LIM when the unit is in Network mode By lag limit set by the m...

Page 23: ...d through the LEN drive The status of the internal pump is displayed in the Pump Status menu under Drive pump status External Pump Output PUMP_EXT Pump Status menu and External Pump Output PUMP_EXT Ou...

Page 24: ...trol point is modified so that the machine capacity required is adjusted to be as close as possible to the demand The reset source can be provided by one of the following Outdoor air temperature that...

Page 25: ...ng mode if at least one of the following conditions applies The volt free tank request contact is open The maximum operating time for the DHW mode has elapsed Time schedule 3 is in an unoccupied perio...

Page 26: ...eating stage will not be used even if the heating demand cannot be satisfied This electric heating backup option can be enabled by setting 1 Elec Stage For Backup ehs_back to yes in the Heat Cool Conf...

Page 27: ...ory Basic Reset Alarms User 8 2 Displaying current alarms The Current alarms menu may display up to 10 current alarms To access the list of currently active alarms 1 Press the Alarm button in the uppe...

Page 28: ...e 15 4901 Loss of communication with SIOB Board Number A Bus installation fault communication error Unit shuts down Automatic if communication is re established 16 4601 Loss of communication with AUX1...

Page 29: ...company Maintenance date passed No action alert Automatic if the new maintenance date is set 37 8000 Initial Factory Configuration Required No factory configuration Unit cannot be started Automatic if...

Page 30: ...ed increase Contact Manufacturer Agency 38 over current during product speed decrease Contact Manufacturer Agency 39 over current during product speed hold Contact Manufacturer Agency 41 drive type er...

Page 31: ...erious damage can occur to your equipment TheManufacturerprovidesawiderangeofservicecontractswhich embrace the assistance of highly qualified HVAC engineering professionals ready to help if needed The...

Page 32: ...ompagnie Industrielle d Applications Thermiques S A au capital de 26 728 480 R C S Bourg en Bresse B 545 620 114 Non contractual document With the thought of material improvement always in mind CIAT r...

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