Intermittent Night-Time Heating (Applies To Compact Heat Only) - Swegon COMPACT Air Operation And Maintenance Instructions

9.2.4 Intermittent Night-time Heating
(applies to COMPACT Heat only)
The unit is utilized to heat the premises when it is normally
stopped by the switch clock.
The function requires connection of an external room
sensor. Connect the TBLZ-1-24-2 Room sensor by means
of the modular cable supplied, to an optional connection
marked Internal BUS 1.
When the function is activated, the air handling unit de-
tects when the room temperature drops below the preset
start temperature. The unit starts with preset flows and
the supply air temperature setpoint.
If extract air fan operation is not desirable, the extract
airflow can be set to 0.
The damper output can be set to be Inactive. This means
that the connected dampers (such as shut-off dampers
for outdoor air and extract air) will not be affected. These
dampers are normally closed when the air handling unit is
stopped and they also remain closed. The damper in the
air recirculation section opens at the same time.
Intermittent night-time heating does not affect a possible
extra temperature zone (Xzone) that regulates according
to its ordinary set point, if intermittent night-time heating
is in operation.
Conditions to be met for intermittent night-time heating
to start:
• The unit should operate in a time channel/switch clock
stop.
• The room temperature should be below set start tem-
perature.
Conditions to be met for intermittent night-time heating
to stop:
• High speed or external/manual stop should be activated.
• Room temperature should be above the preset stop
temperature.
• Alarm with preset stop priority has tripped.
If the needed, the air handling unit fans will continue to
operate to cool the electric air heater although other con-
ditions for stop have been met.)
Settings:
Value
Room temperature for start
Room temperature for stop
Supply air temperature setpoint 10 - 40 °C
Supply airflow
Extract airflow
Damper output
*) The setting range is the same as the min/max settings of the
air handling unit.
**) According to the setting for low speed at USER LEVEL under
FLOW/PRESSURE.
22 www.swegon.com
Setting Factory
range setting
5 - 25 °C 16 °C
5 - 25 °C 18 °C
28 °C
*) m3/s/Pa **) m3/s/Pa
*) m3/s/Pa 0 m3/s/Pa
Inactive/Active Inactive
Registered design. The company reserves the right to make design changes without prior notice.
INSTALLATION
FUNCTIONS
*FUNCTIONS*
TEMPERATURE
AIR FLOW/PRESSURE
FILTER
OPERATION
HEATING
COOLING
IN/OUTPUTS
IQnomic Plus
ALL YEAR COMFORT
ROOM AIR
Intermittent night-time heating with air recirculation sec-
tion:
If the extract airflow is set to 0 and the output to the
damper is inactive, the following will take place:
When conditions for start are met, outdoor air and ex-
haust air shut-off dampers remain closed. The damper in
the air recirculation section is opened. The extract air fan
is idle.
The supply air fan operates according to the preset supply
airflow and the heating coil downstream of the air han-
dling unit operates according to the supply air tempera-
ture setpoint, until the conditions for stop are met.
GB.COMPACTAHSK.210520
* TEMPERATURE *
TEMPERATURE REG
AIRING FUNCTION
SUMMER NIGHT COOL
INTERM. NIGHT HEAT
MORNING BOOST
SETPOINT TEMP DISPL
HEATING
EXT. SENSORS
* Applies to COMPACT Heat
only
SUPPLY AIR
*
*
*