Frost Protection; Home Antifreeze Protection - Carrier 80AWX Serie Manual Del Usuario

Controller operation
a: Room priority line
Note: fig.10 refers to heat mode operation; in cool mode E
and F are added to C.
The system will switch from space heating / cooling to
domestic hot water production if:
• domestic water priority is higher than room priority for
15 minutes
• room priority is 0 and there is a domestic water demand
The system will switch from domestic hot water production
to space heating / cooling if:
• room priority is higher than domestic water priority for
15 minutes
• domestic water priority is 0 and there is a demand on
space heating / cooling
• room priority is 1 for 2 minutes
In Domestic Hot Water mode, room priority is set to 0.
If no room sensor is used, room priority is set to 0.5 when
there is no domestic hot water demand and to 0 when there
is domestic hot water demand.
In case of boiler backup, priority lines are adjusted to
optimize energy efficiency.
Domestic water input
Domestic water input has an effect on domestic hot water
priority.
Domestic hot water input can be connected to solar control
(set code 133=2), to stop domestic hot water production
from the system when solar source is available.
Domestic water input not active
When domestic water input is not active, domestic hot
water priority is set to 0 (see code 106.0).
Domestic water input is active
When domestic water input is active, if domestic hot water
is managed by system control (code 133=1 or 2), priority is
calculated normally; if it is managed by an external contact
(code 133=3), priority is set to 1.

Frost protection

This function is active in all operative modes, including OFF.
It prevents water freezing in the circuit and in the domestic
water tank.
The activation temperature is determined by code 111.

Home antifreeze protection

User can activate this function through code 1.0.
Once it is enabled, this function is active in OFF mode and
Domestic Hot Water mode.
80AWX- 80AWH
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If using a tank listed in the paragraph Accessories and
nothing is connected to this input, set code 106.0 = 1
Booster heater
Booster heater (electric heater inside domestic hot water
tank) is activated if domestic hot water temperature is
below the setpoint and the schedule allows electric heater
activation.
This function is only available if domestic hot water is
managed by system control (code 133=1 or 2).
It is possible to force the activation of booster heater by
setting code 1.5 = 1.
The code is self reset when the desired setpoint is reached.
If domestic hot water temperature sensor is in diagnostics,
booster heater is never activated.
Disinfection (antilegionella)
This function is only available if domestic hot water is
managed by system control.
The disinfection function disinfects the domestic hot water
tank by periodically heating water to a specific temperature
for a defined time period.
The disinfection function settings must be configured
according to national and local regulations.
During disinfection function, booster heater is activated, if
needed, regardless the schedule.
In case of boiler backup, priority lines are adjusted to
optimize energy efficiency.
Note:
If domestic water sensor is in diagnostics or disinfection
function has not been completed within the defined
timeframe, domestic hot water production is stopped,
unless code 1.3 is set to 1.
The system will try to perform the disinfection cycle on the
next scheduled day.
Code 1.3 is self reset is 0 when domestic water sensor is
working and disinfection function is completed.
It prevents the environment to go below a specific
temperature, defined by code 2.
It works only if room temperature is measured by the
system (code 105.0=1 or 4).