7
Schematic diagram (example)
Warm air
Circulation
Circulation mode
A pipe adapter (accessory) on the suction side is
necessary for pure circulation mode.
◊
Air lines her hold their shape must be placed on the
intake side.
Do not use unstable lines.
◊
When setting up the unit outside, a folded spiral-
seam pipe or similar device should be used for
circulation.
Fresh air mode
Air is taken in at the back of the units (factory made).
Schematic diagram (example)
Warm air
Fresh air
Electrical connection
◊
The units are operated with 400/3~N/50.
◊
The unit must be connected to the power source at a
special terminal equipped with a switch to protect
against faulty currents in accordance with VDE 0100
§ 55.
◊
The design of the connection cable depends on the
unit’s electrical capacity and the length of the cable
and takes into account the local conditions.
◊
Extension cords may only be used if they are com-
pletely unrolled or rolled up.
Warm air distribution
The units are equipped with a high-performance axial
fan that requires little maintenance. This fan has been
designed, depending on the requirements, to direct the
warm air efficiently.
It is preferable to distribute air by means of pipes or
special hot air and plastic hoses. The possible lengths
of these lines depend on the air-side resistance of the
warm air ducting.
Make sure to observe the following when using warm
air hoses:
◊
Use only warm air hoses (accessories) approved by
our company.
◊
The inner overlappings of the seams of the warm air
hoses must point in the direction of the air.
◊
Make sure that the hoses and/or pipes are securely
attached to the unit’s air outlet connection.
◊
To prevent heat from building up, the pipes and
hoses may not have sharp kinks and bends.
◊
We recommend using folded spiral-seam pipes.
◊
Use warm air or plastic hoses only for straight air
lines if possible.
◊
Plastic hoses may not be twisted.
◊
When heating closed rooms via warm air lines, no
counter pressure may not build up.
◊
If the suction temperatures or resistance on the unit
outlet increases, the forced-air oil burner can be
switched off in heating mode temporarily by the tem-
perature monitor (TW).
Once the temperature has fallen, the burner
switches are again automatically.
◊
If the intervals are too short, the length of the warm
air line should be checked.
*
Avoid starting the forced-air oil burner in frequent
cycles (under 5 min.).
*
If blockages cause the unit to heat up, heating op-
eration is permanently interrupted by the STB!
Operating modes
The units can be used in the fresh air and circulation
modes.
Summary of Contents for HTL 150 FB
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