Dampers - Carrier AiroVision 39 HQ Assembly/Installation, Commissioning, Maintenance Manual

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Fig. 53. Multi-siphon installation
Siphon outlets should not be raised over drain length
or at the end of the line. If it is necessary due to an
obstacle on the ground, H2 in siphon calculation
should be considered, see Fig. 53.
For 62 mm. base frames that requires siphon appli-
cation, a base frame shown in Figure 50 is necessary
under the air handling unit. The constructed base
frame should be levelled and balanced.
For AHU with NPU profile concrete base frame re-
quirement and height must be checked and AHU
installation area must be prepared according to the
explanations above.

10.8. Dampers

- If not installed in the factory, check whether damper
motor has been installed in accordance with the in-
structions of the supplier.
Check whether correct angle is set.
Check whether dampers close correctly.
Check whether damper is opening at correct angle.
For servo-motor controlled dampers, following to frost
thermostat warning or after a power failure, check the
operation after power is restored.
Some dampers should be open while some other are
closed.
Fig. 54. Manual start-up
Fig. 55. Strat-up with damper motor