GB.GOLDSK509.091101
We reserve the right to alter specifications without notice.
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INSTALLATION
FUNCTIONS
*FUNCTIONS*
teMPeRatURe
AIR FLOW/PRESSURE
FILTER
OPERATION
HEATING
COOLING
HUMIDITY
ReCO
2
IQnomic Plus
ALL YEAR COMFORT
CONTROL Optimize
8.2.4 Intermittent night-time Heating
The unit is utilized to heat the premises when it is normally
stopped by the switch clock.
The function requires that an external room sensor is con-
nected (control unit terminals 40-41) and that a reheating
coil be installed downstream of the air handling unit. The
function works best if the GOLD is equipped with an air
recirculation section and shut-off dampers for the outdoor
air and the exhaust air.
When the function is activated, the air handling unit
detects 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 0. 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 recircula-
tion section is opened at the same time, if one is installed.
Intermittent nighttime heating does not affect a possible
extra temperature zone (Xzone) that regulates according
to its ordinary set point, if intermittent nighttime 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
Setting
Factory
range
setting
Room temperature for start
5 - 25 °C
16 °C
Room temperature for stop
5 - 25 °C
18 °C
Supply air temperature setpoint 10 - 40 °C
28 °C
Supply airflow
*) m3/s/Pa
**) m3/s/Pa
Extract airflow
*) m3/s/Pa
0 m3/s/Pa
Damper output
0=not activated 0
1= activated
Control output***
0=IQnomic
0
1 =IQnomic Plus
Intermittent night-time heating with air recirculation sec-
tion:
If the extract airflow is set to 0 and the damper output is
not activated, the following takes place:
When conditions for start are met, outdoor air and
exhaust 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.
EXTRACT AIR
SUPPLY AIR
* TEMPERATURE *
TEMPERATURE REG
TEMP.REG. Xzone
OUTDOOR TEMP COMP
SUMMER NIGHT COOL
InteRM. nIGHt Heat
MORNING BOOST
SETPOINT TEMP DISPL
EXTRA REG. SEQUENCE
EXT. SENSORS
*) 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.
*** If IQnomic Plus is selected, extra control sequence and inter-
mittent nighttime heating can be used at the same time.