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Operation and maintenance
Envistar Compact
DSEC181201.00.EN
Continuous product development may give rise to specification changes without notice.
7.8 Damper (code ECET-UM, ECET-TR)
Size 04
Sizes 06,10 and 16
The purpose of the dampers is to regulate the air flow. Faulty function gives rise
to disturbances that may result in serious problems.
•
If the outdoor air damper does not:
- Open completely this reduces the
air flow
- Close completely when the unit
stops, the heating coil is likely to
freeze
- Seal properly (leaks) this will result
in increased energy use.
•
If the trim damper for the rotor purg-
ing function is not working or is not cor-
rectly adjusted, possible odours in the extract air are likely to be transferred via
the rotor to the supply air. Units that are supplied with integrated control equip-
ment are equipped with the pressure-controlled rotor purging function control
function in order to optimise the trim damper function and minimise the risk of
transferring odour.
Inspection
1. Check the function of the damper actuator.
2. Check the dampers for tightness when they are closed. If they are not
sealed, adjust the damper actuator to make the dampers tight (does not ap-
ply to trim dampers).
3. Check the sealing strips.
4. If the damper is not working, check that there are no screws penetrating the
drive mechanism/damper blades to interfere with damper function.
Cleaning
Clean the damper blades with a cloth. In the event of stubborn dirt, use a mild,
alkaline detergent.
Trim damper for rotor
purging operation
Outdoor air damper
Outdoor air damper
Summary of Contents for Envistar Compact Series
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