Swegon TBLA, TCLA, TCLAS Installation Instructions Manual
GB.TBLA.180307
Swegon reserves the right to alter specifi cations.
www.swegon.com 1
Installation Instructions for
TBLA/TCLA/TCLAS Air heaters for water
GOLD/SILVER C/COMPACT
1. General
The TBLA/TCLA/TCLAS air heater uses hot water as the
heating medium for post-heating the supply air.
Finned-tube heat exchanger fabricated of copper tubes
and profi led aluminium fi ns. The headers and the pipework to the water connections are made of copper. The
male threaded pipe connections are made of brass.
Extra accessories
GOLD/COMPACT:
Circulation pump used for ensuring the frost guard function. Supplied with T coupling, non-return 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 circulation pump.
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.
SILVER C:
The TBVA Valve set consisting of a 2(3)-way valve including actuator can be ordered. See the instructions for
TBVA accessories. If the air heater/cooler 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, ensure that the required
protection is arranged.
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.
TBLA
TCLA/TCLAS
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.
GB.TBLA.180307
Swegon reserves the right to alter specifications.
2 www.swegon.com
3. Installation
For the installation of air heaters 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.
See to it that the frost guard connection, if fitted, always is
nearest to the return liquid connection.
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 55-70°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.
4. Electrical connections
For particulars of the electrical connections of the valve
actuator and circulation pump, see the separate instructions for the TBVL/TBVA valve kit.
Fig. 1
1)
1)
1) Connection for a
frost guard sensor,
if required
Shut-off valve
Heating
water
Shut-off valve
2(3)-way valve
Commissioning valve
Non-return valve
Frost guard sensor.
Secondary pump
A AB
B
Installation of frost guard sensor if the air heater
lacks a connection for an insertion sensor
Fig. 2
Pipe connection example
Measuring element, sensor
T-piece
Cable gland
Spacer nut for adjusting the
insertion depth.
A AB
B
Installion of frost guard sensor in the connection for an insertion sensor (if any)
Shut-off valve
Heating
water
Shut-off valve
2(3)-way valve
Adjustment
valve
Non-return valve
Secondary pump
Frost guard
sensor
T-piece
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