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GB.TBLF.170215
Swegon reserves the right to alter specifi cations.
www.swegon.com 1
Installation Instructions for the
TBLF/TCLF Air Heater, for water
GOLD
1. General
The TBLF/TCLF air heater uses hot water as the heating
medium for preheating the supply air. Install the TBLF in
the outdoor air duct.
Finned-tube heat exchanger fabricated of copper tubes
and profi led aluminium fi ns. Fin pitch: 5.5 mm. The headers and the pipework to the water connections are made
of copper. The male threaded pipe connections are made
of brass.
The control functions for preheat are integrated into the
control equipment of the air handling unit. Temperature
sensor for duct and IQlogic
+
with a 0.25 metre long cable,
frost guard sensor (insertion type), and T-piece (for air
heaters without outlet for an insertion sensor) are included
in the air heater supply.
Extra accessories
Circulation pump used for ensuring the frost guard function for the air heater. Supplied with T coupling, nonreturn valve and commissioning valve. The automatic
pump control system is integrated into the control equipment of the air handling unit. See the individual instructions for the TBPA accessory.
The TBVL valve set with 2(3)-way valve, actuator, connection cable with quick-fi t connector, frost guard sensor
(insertion type), and T-piece (for air heaters without outlet
for an insertion sensor). See the individual instructions for
the TBVL. If the air heater is to be installed outdoors or in
a cold space, take into consideration the enclosure class of
the actuator and the permissible ambient temperature. If
necessary, see to it that required protection is arranged.
If you use a valve of your own, you have the option of
instead selecting a set of electrical connection components. This set contains a connection cable with quick-fi t
connector, resistor and insertion or strap-on sensor.
2. Maintenance
Check at least twice a year whether cleaning is necessary.
Cleaning shall only be done by blowing with compressed
air against the ordinary direction of airfl ow, vacuum cleaning with a soft nozzle or wet cleaning with water and/
or solvent. Before you begin wet cleaning, you should
cover adjacent functional sections to protect them. After
wet cleaning, you should blow the surfaces dry with compressed air to remove every trace of cleaning solvent.
TBLF
TCLF
If cleaning solvent is used, this solvent must not contain
ingredients that will corrode aluminium or copper. Swegon’s cleaning agent is recommended. This cleaning agent
is sold by Swegon or Swegon Service.
While cleaning, check whether the liquid circuit needs to
be vented.
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GB.TBLF.170215
Swegon reserves the right to alter specifications.
2 www.swegon.com
3. Installation
For the installation of air heaters for preheat in duct systems, see the individual instructions entitled: Installation
Instructions for Duct Accessories.
Always connect the liquid circuit for counter-flow circulation to ensure optimal air heater performance. Connect
the inlet water pipe to the upper or lower air heater connection depending on the direction of airflow. See Fig. 1.
Make sure that the frost guard connection is always nearest to the return water pipe connection (applicable to air
heaters with rectangular connections).
To install the frost guard sensor:
Circular connections:
The frost guard sensor must be mounted on the return
water pipe from the air heater, as near to the air heater
as possible. A T-piece is supplied with the air heater for
installing an insertion sensor. See fig. 2 and 3. Make sure
that the frost guard sensor is protected to prevent inadvertent damage. This can be done, for example, by fitting
a pipe extension piece to the air heater’s outgoing header.
Rectangular connections:
Install the frost guard sensor on the air heater in the connection intended for an insertion sensor. See Fig. 1.
Fig. 1
1)
1)
1) Connection for
frost guard sensor
(applies to air heaters with rectangular connections)
T piece
Frost guard sensor
Shut-off valve
Heating
water
Shut-off valve
Fig. 2
Pipe connection example
Fig. 3
Measuring element, sensor
T piece
Cable gland
Spacer nut for adjusting the
insertion depth.
2(3)-way valve
Commissioning valve
Non-return valve
Applicable to air heaters
with circular connections
Frost guard sensor. Applicable to air heaters with
rectangular connections
Secondary pump
A AB
B
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GB.TBLF.170215
Swegon reserves the right to alter specifications.
www.swegon.com 3
Use a pipe wrench to restrain the pipe connections of the
air heater when tightening the external pipe connections
to avoid damaging the tubes in the air heater.
Always fill the air heater with liquid from the lower connection. Vent the system before you commission it.
The supply flow temperature should be between 80-85°C.
Continuous circulation through the air heater is required
whenever the outdoor temperature is low, to ensure
satisfactory anti-freeze monitor function in the air heater.
A secondary pump and non-return valve must therefore be
installed as illustrated in Fig. 2. A pump kit consisting of a
pump, non-return valve and commissioning valve is available as an accessory.
The temperature sensor can to advantage be mounted at
an appropriate place in the air handling unit between the
filter and the heat exchanger in order to avoid erroneous
measurements because of temperature stratifications.
The ventilation system should be supplemented with a
TBLZ-1-24-3 or TBLZ-1-30 sensor, installed upstream of the
preheat coil viewed in the direction of airflow, to furnish
the GOLD air handling unit with a correct outdoor temperature reading.
Page 4
GB.TBLF.170215
Swegon reserves the right to alter specifications.
4 www.swegon.com
4. Electrical Connections
The electrical connections should be wired by a qualified
electrician in accordance with local electrical safety regulations.
Install the IQnomic Plus module on the DIN rail inside the
electrical equipment cubicle of the air handling unit or at
another appropriate location.
Applicable to size 100/120 GOLD
units only:
If the total load on Terminals
31-32 is higher than 16 VA, use
Terminals 201 (G) and 202 (G0).
Terminals 201-202 can be loaded
with a total of max, 48 VA.
GOLD RX/PX/CX/SD, version E/F
4
5
6
7
8
9
A
B
C
D
E
F
0
1
2
3
P1
COM POWER
IQlogic
+
1234 5678 9101112
-+-+ -
++--S - S
C13NO14C15NO
16
+17-
18
+19-
20
G21G0
22
Com 1Heat/Cool Com 2
Temp. sensor,* for
pre-heated air
Contactor/
Pump
* Digital temperature sensors require
correct polarity when you connect them.
Jack for wall mounting, 019611
T1
GR
R1
RD
32 (G0) IQlogic control unit
31 (G) IQlogic control unit
Blue
Orange
Black
Red
Green
Yellow
Brown
White or
grey
Brown
White
Resistor/air heater/air cooler, type 2.2 kΩ
Insertion-type/strap-on sensor
Valve actuator
0-10 V DC output signal
0-10 V DC control signal
G0 24 V AC
G 24 V AC
Pump alarm
(Requires GOLD program version 1.10 or a later version)
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