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3910832
Subject to changes in keeping with technical developments!
5.6.3 Cable list
The cable cross-sections are specified without guarantee.
The type of installation and possible cumulation are not considered!
Devices with three-phase motor:
Device type
Supply line (400 V, AC/3 Ph)
Cable
LH 140; LH 250; LH 400; LH 650; LH 1000
6 G 1,5 mm² (1-level); 9 G 1,5 mm² (2-level)
Devices with three-phase motor:
Device type
Supply line (230 V, DC/1 Ph)
Cable
Condensate pump
3 G 0,75 mm²
Cable for optional field devices:
Field device
see "Controllers and regulators for air-heating devices / air-cooling devices" documentation
6.
Operation / general information
The total air volume recirculated by the devices should correspond to 4 or 5 times per hour of the air volume in the room.
The system responds slowly and heat is trapped when the air recirculation volume is insufficient. A higher recirculation
volume is welcome. It makes the system more responsive!
Cooling
The air outlet temperature during cooling should be at most 6 - 8°C below the environmental temperature to prevent
unpleasant draft effects. Too high temperature differences (> 8°C) may lead to the formation of cold-air zones.
Heating
The air outlet temperature of the air heater should not be below 34 °C or above 42 °C.
An air outlet temperature below 34 °C poses the risk of unpleasant draft effects in the area of the work stations. An air
outlet temperature above 42 °C results in a strong thermal air movement. The penetration depth of the warm air stream
is reduced. The cold air in the occupied area is only insufficiently penetrated by and mixed with the heated air. A "cold air
zone" forms in the occupied area while more pent-up heat collects in the ceiling area (heat loss).
7.
Switch cabinet
AL-KO air heaters / air coolers can be optionally extended with various control accessories.
Connecting a third-party frequency converter at the customer side constitutes a change to the device and is therefore
not permitted!
Further details and information are provided in the "Controllers and regulators for air-heating devices / air-cooling de-
vices" documentation.
Caution!
Heating media temperatures of more than 120 °C require the heating agent supply to be cut off when the fan is
switched off and the fan continuing to operate for approx. 3-4 minutes.
"Assembly / Operation / general information / Switch cabinet"
