Swegon Gold is a versatile air handling unit designed to meet the demands of modern buildings. It offers exceptional energy efficiency, precise climate control, and a wide range of features to ensure optimal indoor air quality and comfort. With its modular construction, Swegon Gold can be tailored to specific project requirements, making it suitable for various applications, including offices, schools, hospitals, and industrial facilities.
Swegon Gold is a versatile air handling unit designed to meet the demands of modern buildings. It offers exceptional energy efficiency, precise climate control, and a wide range of features to ensure optimal indoor air quality and comfort. With its modular construction, Swegon Gold can be tailored to specific project requirements, making it suitable for various applications, including offices, schools, hospitals, and industrial facilities.
GB.PREHEAT.130225
Specifications are subject to change without notice. www.swegon.com 1
Function Guide for the GOLD,
Preheating
1. General
When it is cold outside and the humidity is high, preheat-
ing the incoming outdoor air will prevent condensation
from forming on outdoor air filter surfaces in the air han-
dling unit.
Preheating the air also reduces the risk of frosting in the
heat exchanger.
Preheating the outdoor air may also be required during
periods of extremely low temperatures outside. If the air is
preheated to -20°C, for instance, this prevents the pres-
sure sensor and the frequency inverter from having to
operate under excessively low ambient temperature condi-
tions.
The preheating function can control the air heater as fol-
lows:
– Electric air heater, pause/pulse control signal.
– Electric air heater, 0–10 V.
– Air heater for hot water, 0-10 V control signal, with anti-
frost monitor/heat retaining function.
– Air heater for hot water, 0-10 V control signal, without
anti-frost monitor/heat retaining function.
Type TBLF air heaters for preheating are designed for
installation in an outdoor air duct, however they can also
be installed in an exhaust air or extract air duct.
Preheating is interlocked to follow the supply air flow. This
means that the function cannot be used in the exhaust air
or extract air duct while the supply air fan is switched off
and the extract air fan alone is operating.
The preheating function has a relay function for control-
ling a circulation pump, if required.
2. Material Specification
Air handling unit All types of GOLD
Option 1
Air heater, water, for preheating TBLF-1-aaa-aaa
The TBLZ-1-53-1 Control of air heater for preheating is
included.
or
Air heater, water,
for preheating (not size 50-120) TCLF-1-aa
The TBLZ-1-53-1 Control of air heater for preheating is
included.
Option 2
Electric air heater, type Swegon standard,
for preheating (not size 50-120) TBLE
Control of air heater for preheating. TBLZ-1-53-0
Consists of: IQnomic Plus, TBIQ-2-1
Temperature sensor (set) for duct mounting,
TBLZ-1-30.
Communication cable, BC1-1 (L = 250 mm).
W
ithout anti-frost monitor sensor
Jack, modular/terminal block TBLZ-1-55
Option 3
Air heater of other type than TBLF/TCLF or TBLE.
Control of air heater for preheating. TBLZ-1-53-a
Consists of: IQnomic Plus, TBIQ-2-1
Temperature sensor (set) for duct mounting,
TBLZ-1-30.
Communication cable, BC1-1 (L = 250 mm).
Code:
a = 0 without anti-frost monitor sensor
a = 1 with anti-frost monitor sensor
GB.PREHEAT.130225
Specifications are subject to change without notice.
2 www.swegon.com
3. Function
The preheating function is a completely independent
control with its own duct temperature sensor. The tem-
perature sensor should be installed in a duct, at least 1.5
metres downstream of the air heater TBLE (viewed in
the direction of airflow, see figure below). The other air
heaters, TBLF and TCLF, can be fitted directly to the air
handling unit and the temperature sensor can then be
mounted inside the air handling unit after the filter.
The duct temperature sensor is required to prevent alarms
from tripping.
The control signal regulates the air heater to keep tem-
perature by sensor at the preset value.
The preheating control function begins when the supply
air fan is running and an airflow reading appears in the
terminal screen.
Air heater for hot water:
During the start-up phase, the preheating and postheating
air heaters simultaneously heat each airflow.
Electric air heater:
The air heater for preheating is cooled down according to
the same settings as those for the air heater for postheat-
ing.
The preheating function does not include any capacity
reduction feature for unit operation in the low airflow
mode.
An overheating protection with normally-closed contacts
monitors the state of the air heater. If the contacts open,
an alarm is initiated.
Air heater for hot water with anti-frost monitor:
The heat-retaining function is automatically activated.
The limits for heat retaining and alarms are identical to the
limits of the air heater for postheating.
The anti-frost monitor sensor is required to prevent alarms
from tripping.
Air heater for hot water without anti-frost monitor:
No heat-retaining function and no alarm for a faulty anti-
frost sensor.
When heating is required and the outdoor temperature is
low, the relay for controlling the circulation pump oper-
ates in the same way as the GOLD control system’s regular
heating relay.
Exercising can be selected and operated in parallel with
the air heater for postheating.
1,5 m
Duct temperature sensor
The sketch shows air heater TBLE. When
having air heaters TBLF and TCLF, the air
heater can be fitted directly to the air hand-
ling unit and the temperature sensor can
then be mounted inside the air handling unit
after the filter.
GB.PREHEAT.130225
Specifications are subject to change without notice. www.swegon.com 3
1632457 12981011
13 181514 16 17 19 242120 22 23
L1 L2
4
5
6
7
8
9
A
B
C
D
E
F
0
1
2
3
4. Electrical Connections
IQnomic Plus module
1) Temp. sensor**
for preheated air
24 V AC*
Valve actuator G G0 Y
Anti-frost
monitor**
Control of circulation pump
* The 24 V AC power-
supply conductors can
be connected to Termi-
nals 60 (G) and 61 (G0)
in the control unit of
the air handling unit.
** Digital temperature
sensors require correct
polarity they are con-
nected.
Communication cable to the control
unit of the air handling unit, where
it should be connected to one of the
connections for the Internal EIA-485.
The function selector switch
must be set to the 9 position.
Air heater for hot water T1
GR
R1
RD
Jack for wall moun-
ting, 019611
Brown
White
–S–S
1632457
PE NL
Pump controls
Supply voltage to 1-phase pump, max 1.5 A, can be obtained by
wiring to the following terminals inside the air handling unit:
GOLD: Terminal 101 (L), terminal 102 (N).
COMPACT Unit & Top: Terminal 201 (L), terminal 202 (N).
GB.PREHEAT.130225
Specifications are subject to change without notice.
4 www.swegon.com
** Digital temperature
sensors require cor-
rect polarity. Be careful
when you wire the
conductors.
Electric air heater
Swegon Standard with
control cable
1632457 12981011
13 181514 16 17 19 242120 22 23
L1 L2
4
5
6
7
8
9
A
B
C
D
E
F
0
1
2
3
Temp. sensor,** for preheated air
0-10 V
Electric air
heater Swe-
gon Standard
with control
cable, 8-pole
G0
Overheating
protection
–S
Communication cable to the
control unit of the air handling
unit, where it should be con-
nected to one of the connec-
tions for Internal EIA-485.
Function selector
switch in Position 9
–S
R1
RD
Jack for wall mounting,
8-pole, TBLZ-1-55
BL
OR
BK
RD
WH
BR
YL
GR
T1
GR
Jack for wall moun-
ting, 019611
(G0)
(G)
24 V AC*
GB.PREHEAT.130225
Specifications are subject to change without notice. www.swegon.com 5
** Digital temperature
sensors require cor-
rect polarity. Be careful
when you wire the
conductors.
Electric air heater
0-10 V or Pause/Pulse Control
1632457 12981011
13 181514 16 17 19 242120 22 23
L1 L2
4
5
6
7
8
9
A
B
C
D
E
F
0
1
2
3
Temp. sensor,** for preheated air
0-10 V
Electric air heater
G0
–S
Communication cable to the
control unit of the air handling
unit, where it should be connec-
ted to one of the connections
for Internal EIA-485.
Function selector
switch in Position 9
–S
R1
RD
T1
GR
Jack for wall moun-
ting, 019611
Overhea-
ting pro-
tection
GB.PREHEAT.130225
Specifications are subject to change without notice.
6 www.swegon.com
INSTALLATION
FUNCTIONS
*FUNCTIONS*
TEMPERATURE
FLOW/PRESSURE
FILTER
OPERATION
HEATING
COOLING
MOISTURE
ReCO22
IQNOMIC PLUS
*IQNOMIC PLUS*
NO. 8 BOOSTER TERMINAL
NO. 9 PREHEAT
NO. A XZONE HEATING
DEACTIVATE
EL AIR HEATER P/P
EL AIR HEATER 0-10 V
W. COIL WITH FP
W. COIL WITHOUT FP
*PREHEAT*
FUNCTION, OFF/ON
SETTINGS
*PREHEAT*
TEMPERATURE 5.0°C.
5. Adjustment
For basic facts on how to use the hand-held micro termi-
nal, see the Operation and Maintenance Instructions for
the GOLD unit.
The PREHEAT function must be manually activated, under
INSTALLATION – FUNCTIONS – IQNOMIC PLUS in the
hand-held terminal.
Select PREHEAT.
Under ”FUNCTION, OFF/ON”, select the type of air heater
connected.
Under “SETTINGS”, select the desired setpoint in
*PREHEAT*
FUNCTION, OFF/ON
SETTINGS
GB.PREHEAT.130225
Specifications are subject to change without notice. www.swegon.com 7
6. Performance checks
IQnomic Plus module:
Light-emitting diode L2 lit with a steady glow indicates
that power is being supplied from the GOLD unit’s control
unit.
A flashing light-emitting diode L1 indicates correct com-
munication with the GOLD unit’s control unit.
Temperature sensor:
Current temperatures can be read under INSTALLATION
– READINGS – IQNOMIC PLUS – PREHEAT. If the tempera-
ture readings are reasonable, wiring has been carried out
correctly.
1632457 12981011
13 181514 16 17 19 242120 22 23
L1 L2
4
5
6
7
8
9
A
B
C
D
E
F
0
1
2
3
L1 L2
GB.PREHEAT.130225
Specifications are subject to change without notice.
8 www.swegon.com
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Swegon Gold is a versatile air handling unit designed to meet the demands of modern buildings. It offers exceptional energy efficiency, precise climate control, and a wide range of features to ensure optimal indoor air quality and comfort. With its modular construction, Swegon Gold can be tailored to specific project requirements, making it suitable for various applications, including offices, schools, hospitals, and industrial facilities.
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