Ruck ETA K 1200 F O, Assembly And Operating Manual

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9.10. Functions
9.10.1. Fan error message contact
9.10.2. Hot water coil / frost protection
Each motor has an error message contact which is closed during fan operation. The unit switches off
when the contact opens. After correction of the fault (see 14.2. Fault diagnosis chart), the unit can
then be restarted.
The fans are each controlled by a EC-controller.
If a fault occurs regarding the fans or EC-controller, the device will switch off, and an error message
will be displayed. To reset the EC-controller, the electricity supply must be switched off at the main
switch for at least 20 s.
The power of the hot water coil is steplessly regulated with the heating valve. An installed heating coil
is protected against icing by temperature monitoring or by an optional frost protection thermostat. If
the supply air temperature drops below the temperature set on the anti-freeze controller, the valves
close and the circulating pump runs constantly, the heating valve opens and a fault message is given.
The device automatically runs „PRE-RINSING“ until heating provides the desired operation tempe -
rature. The unit restarts then automatically. If the desired operating temperature cannot be achieved
after 20 min., an error message is displayed. Afterwards, the unit turns itself completely off until the
fault is repaired. (see 14.2. Error table F07)
9.10.3. For version with electric heating module (EHM)
ETA K 1600 / ETA K 2400
ETA K 1600/2400 FE is fitted with an external electric heating module.
Fig. 22:
Connection EHM to ETA K 1600/2400
1. Heating module
2. Air duct
3. ETA K 1600/2400 F
Air connections
When installing a heating module, the following must be observed:
•
For the duct diameter transition, accessories are used.
•
Fasten transition piece to the housing (Rotoline) with 4 hexagon-head bolts (M8x20).
•
The heating module must maintain a minimum distance (L) of between 0.50m and 4.00m from
the air handling unit.
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