2
SDHE.040219
Swegon reserves the right to make changes.
www.swegon.com
1. Installation
The air heater must be installed in the outdoor air duct.
Make sure that the flow direction is correct (marked
with an arrow on the air heater). The air heater must
not be installed with the service hatch cover directed
downwards, all other positions are acceptable.
NOTE!
The air heater and outdoor air duct must be
insulated up to the ventilation unit. Insulation must
be designed according to national regulations, with
nonflamable insulation for example mineral wool. The
insulation may not cover the lid as the specification plate
and warning sign must be visible and the lid must be
accessible for opening.
NOTE!
A duct mounted filter must be installed on the
air flow before the heater when the heater is used as
pre heater. Swegon recommends the duct filter that is
available as an accessory. (See chapter Dimensions and
technical data.)
Installation in the outdoor air duct
(pre heater)
• Connect SET connection module
(4)
to the venti-
lation unit
(1)
by connecting the RJ45 cable to the
SET2 conncetors.
• Install a 0...10V control cable*
(A)
to the heater
(2)
and connect it to the AO3 connector in SET module
(4)
.
• Connect the power cord via fuse protection and a
service switch*
(3)
to the air heater. The system is
a fixed installation, which means that an electrical
inspection of the connection must be made.
• Install any actuators for duct dampers according to the
manufacturer’s instructions and connect the control
cables to the SET connection module’s relay outputs.
*) Not included.
NOTE!
If the SET module is used for 230 VAC control,
the module must be installed, according to the electri-
cal safety directives, in a separate enclosure.
NOTE!
Make sure that the strain relief is arranged for the
connections according to the electrical safety directives.
2. Electric and control cables
Smart Extension Temperature module
Sensor
T6 T7
T8 T9
Smart unit
SET2 SET1
DI
max 50 VDC
NC NC NC
1 2 3 4 5 6 7 8 9 10 11 12
max 250 V / 6 A
Relay 1
4 3 2 1
max 250 V / 6 A
Relay 2
NC
4 3 2 1
AO3
AO2
AO1
NC
NC NC
SET
1
0
230V
2
1
3
4
5
7
8 9
10
1
AO3
AO2
O1
A
3. Commissioning
The commissioning of the air heater is performed with
a Smart control panel.
Main menu/Settings/(1234)/
Heating / cooling.
External electric pre heater
Put the air heater for preheating into service from the
menu option
Ext. electric preheater
.
Relay control functions
If you wish to use relay control functions, e.g. for a duct
damper, the SET unit’s relays can be programmed for
the required function from the
Sensors / controls
menu
.
4. Use
Once the air heater has been commissioned it works auto-
matically and maintains optimal ventilation unit efficiency
.
The ventilation unit’s automatic control system controls
and monitors the function of the air heater. If a fault
occur on the heater, this is indicated by the alarm
Elect.
preheater fail
.
The heater is equipped with over temperature protecti-
on, which is located inside the air heater. If an overhea-
ting protection with manual reset trips, it can be reset
by pressing a button on the air heater.
NOTE!
Check why the overheating protection tripped
before resetting the fault.
5. Service
NOTE!
Disconnect the power to air heater and ventilati-
on unit before servicing.
Service should always be carried out on the air heater and
the filter when servicing the ventilation unit. Check that
dirt has not collected in the air heater, clean if necessary.
Clean the duct filter by vacuum cleaning or if necessary
replace with new G3/G4-filter material.
Replacement filters can be found in the online store, casas-
tore.fi / casabutiken.se.
