CIAT GeoCIAT - Heating Elements Configuration

EN - 44
5.5.1 Electric heating element (P11 = ELECTRIC)
The electric heating element is managed in 1 stage. Use of optional 4 kW GeoCIAT
TM
Modular heating element
Operating limit
5.5.2 Boiler heating element (P11=BOILER)
Corrosion of heating sources
Heating sources, such as those made of steel, are susceptible to corrosion. Please contact your boiler manufacturer to determine
whether the heating source is compatible with HomeConnect control. (e.g. maximum and minimum operating times, etc.)
A few recommendations
- do not operate the burner and the heat pump simultaneously at water temperatures below 40°C with P13 at HP +
HEATING ELEMENT. If in any doubt, set P190 and P191 to the same value.
- Do not short-circuit the boiler corrosion protection systems (e.g. heating accelerator pump kept off until the burner
raises the heating source temperature to over 40°C).
5.5.2.1 Boiler controlled by its own control P11 = BOILER and P12 = ALTERNATE
Typical application: boiler equipped with advanced electronic control.
By setting P11 = BOILER and P12 = ALTERNATE the HomeConnect controller only supplies an operating authorisation contact to
the boiler. The direction of action of this contact (terminals L - H. EL J45 and J46) can be adjusted via parameter P17.
The boiler is authorised to operate when the outdoor temperature falls below the value of P191 or if the heat pump malfunctions.
The boiler burner is then controlled by the boiler's control system.
Boiler heating element contact P17 values
NO NC (factory setting)
Open Operation authorised Operation prohibited
Closed Operation prohibited Operation authorised
Water return temperature (P280)
Electric heating
element only
Heat pump + electric
heating element
Heat pump only
55°C
Heat pump turned off
Heating element
authorisation
Backup heater only
Backup turned off
Outdoor temperature P250
Maximum temperature
of water return to the
heat pump
(based on outdoor
sensor return P283)
Max. heat pump
authorisation
temperature
No heating element
Heat pump turned off
P190
Heat pump operating low limit
P191
Programmed heating element trigger threshold
Heating element type P11=NO P11=ELECTRIC P11=BOILER
Boiler operation
(value of P12)
- - P12=ALTERNATE P12=SIMULTANEOUS*
Compressor available YES NO YES NO YES NO YES NO
Stage no.1 Comp. - Comp
Elec. heating
element
Comp. Boiler Comp. Boiler
Stage no.2 - -
Elec. heating
element
- Boiler - Boiler -
* Boiler and heat pump simultaneous operation
5.5 Heating elements
Parameter P11 is used to congure the type of heating element installed. Parameter P13 is used to dene the type of bypass (see
paragraph 5.3)
P11 Heatingelementconguration
Type of bypass
(via opening of contact on terminal J11 – terminals 1-2)
NO No heating elements Heat pump turned off
ELECTRIC Electric heating elements Only electric heating elements turned off
BOILER Boiler heating element
Heat pump turned off if boiler heating element in simultaneous
operation with the heat pump (see parameter P12)
Heating elements are not authorised:
- if P11 = NO.
- if the unit stops due to a LOW INT WATER FLOW fault (see
paragraph 6).
- if INT WATER INLET SENSOR fault (see paragraph 6).
Heating elements are authorised:
- if P11 ≠ NO 80 seconds after compressor operation
- if the compressor is unavailable under conditions other than
those indicated above (unless LOW INT WATER FLOW fault
and P121=NO).
The heating elements are managed in 2 stages: