Commissioning
Each Ecotel Outdoor unit leaves Airedale’s manufacturing facility fully charged and pre-commissioned.
Pre Start Checks
Once the whole system has been installed it is most important that the following pre-start checks are made:
● The equipment is exactly as ordered.
● All electrical terminals are tight.
● Power is available to the unit, via customers isolator and is at the correct voltage.
● Filters are of the correct grade and size.
● Check that the condensate drain lines are precharged, not obstructed in any way and water ows away freely.
Electrical
Once the above installation and pre-start checks have been carried out satisfactorily, the main electrical checks can
commence.
● Measure voltage (400 VAC 3 phase) L1 to L2, L2 to L3, L1 to L3.
● Measure voltage (230 VAC 1 phase) L1 & N (where applicable).
● Measure control transformer secondary voltage (24 VAC) Note: - tolerance +/- 10%
● Optional Extra (-)48VDC primary and secondary (24VDC) voltages. Note: - tolerance +/- 10%
● Check phase rotation before switching supply to the unit. Failure to do so will cause damage to the scroll
Compressor(s).
● Check operation of auxiliary re shutdown alarms on volt free contacts (if appropriate).
Note: - A test procedure and training is available on request
Operating Data
Control - General
The microprocessor controller has been specically designed to provide the control information necessary to operate the
unit in an energy efcient manner.
The unit will operate in 1 of 5 modes:
1. Free Cooling - using outside air only
2. DX Cooling - mechanical cooling with room return air
3. Concurant Cooling
4. Electric Heating (Optional Extra)
5. Free Heating Mode
When the outside ambient temperature is low enough the fresh air damper will modulate between 0-100% using full
fresh air to cool the room.
As a further consideration to energy efciency, the condenser fan is off during free cooling mode.
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