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
8.7 Cooling
8.7.1 Operation
Activate the cooling function.
8.7.2 Cooling Regulation
CoolDX -Economy (without heat exchanger)
Used when the CoolDX cooling unit is connected via bus
cable.
Both cooling relays of the air handling unit operate in parallel
with each relay on the IQnomic plus module in the CoolDX
cooling unit.
CoolDX - Comfort
Used when the CoolDX cooling unit is connected via bus
cable. The heat exchanger in the GOLD unit operates in
sequence with the cooling unit to even out the supply air tem-
perature. Important! Requires an extra outdoor temperature
sensor.
Use the TBLZ-1-30 accessory for mounting an outdoor air
temperature sensor in the ductwork upstream of the CoolDX.
Use the TBLZ-1-2 4/5 accessory for installing the outdoor air
temperature sensor outdoors.
COOL DXS
For use when the COOL DXS cooling unit is connected via
a bus cable. The COOL DXS operates downstream of the
heat exchanger in the GOLD air handling unit.
Stepless 0-10 V DC
Used when variable cooling control is connected. The air han-
dling unit cooling controller modulates a 0-10 V DC signal that
is linear with the cooling load (control unit terminals 42-43).
Both the cooling relays of the unit operate in parallel with the
signal and are energized when the cooling signal exceeds 0.5
V DC and are de-energized when the signal drops below 0.2
V DC.
The output for cooling relay 1 is connected to terminals 7-8
and for cooling relay 2 to terminals 9-10.
Stepless 10-0 V DC
Same as above, but the control signal is inverted where a 10 V
output signal means a 0 % cooling load.
On/off, 1 Step
Used if cooling in one step is connected. The air handling
unit’s cooling controller regulates the cooling load at 0-100
%. Cooling relays 1 and 2 are energized when the cooling
load exceeds 5 % and are de-energized when the cooling load
is less than 2 %.
The output contact for 0-10 V DC control signals (terminals
42-43) operates in parallel with the 0-100 % cooling demand
and can be used for indicating the cooling demand, for
instance.
On/off, 2 steps
Used when cooling in 2 steps is connected. The air handling
unit’s cooling controller regulates the cooling load at 0-100 %.
Cooling relay 1 is energized when the cooling load exceeds 5
% and is de-energized when the cooling load is less than 2 %.
Cooling relay 2 is energized when the cooling load exceeds 55
% and is de-energized when the cooling load is less than 50
%.
The 0-10 V DC control signal output (terminals 42-43) oper-
ates in parallel with the 0-100 % cooling demand and can be
used for indicating the cooling demand, for instance.
On/off, 3 Steps - Binary
Used when cooling with two inputs controlled with three
binary steps is connected. The cooling controller of the unit
regulates the cooling demand at 0-100 %.
On an increasing cooling load:
Cooling relay 1 is energized when the cooling load is
above 5 % and is de-energised when the cooling load is
between 40-70 %. Cooling relay 2 is energized when the
cooling load is above 40 %. Cooling relay 1 is energized
again (together with cooling relay 2) when the cooling
load is above 70%.
On a decreasing cooling load:
Cooling relay 1 drops when cooling load is below 60 %, it is
energized again when cooling load is below 30 % and drops
again when cooling load is below 2 %. Cooling relay 2 drops
when cooling load is below 30 %.
The output for 0-10 V DC control signals (terminals 42-43)
operates in parallel with the 0-100 % cooling load and can be
used for indicating the cooling demand, for instance.
* COOLING *
OPERATION MODE
COOL REGULATION
PERIODIC OPERATION
REGULATION SPEED
OUTDOOR TEMP LIMIT
RESTART TIME
COOL MIN AIR FLOW
NEUTRAL ZONE
COOLING BOOST
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