Corrosion locations
The unit is designed to withstand most climate conditions. If the unit is installed near the seashore
where high levels of salt may shorten the life of the unit, make sure it is not exposed to sea winds
directly.
Installations close to environmental, chemical, or corrosive effects require special consideration. For
example, contact Johnson Controls with regards to units being installed near the seashore, or near
chlorine-treated swimming pools.
Operating in low ambient conditions
If the unit is operating in low ambient temperature, consider the following precautions:
• Install a baffle plate on the airside of the unit to prevent exposure to snow.
• Use a canopy to prevent the coil and fan being affected by heavy snowfall.
• De-ice the fan blades before operation if the fan blades fail to rotate after a long period of
standby in low ambient temperature.
• Install flexible hoses to ensure effective condensation water drainage during operation.
Location clearances
Adequate clearances around the units are required for the unrestricted airflow for the air-cooled
condenser coils and to prevent re-circulation of warm discharge air back onto the coils. If the
appropriate clearances are not maintained, airflow restriction or re-circulation can cause a loss
of unit performance, an increase in power consumption, and may cause the unit to malfunction.
Consider the possibility of down drafts, caused by adjacent buildings, which may cause re-
circulation or uneven unit airflow.
For locations where significant cross winds can occur, such as exposed rooftops, use a louvre
enclosure to prevent wind turbulence interfering with the unit airflow.
When units are installed in an enclosure, ensure the enclosure height does not exceed the height of
the unit on more than one side. If the enclosure is of louvered construction, the same requirement
of static pressure loss applies as for ducts and attenuators. If the surrounding enclosures or wall
exceed the height of the unit on more than one side, see Figure 33 for the minimum necessary
clearances.
Where accumulation of snow is likely, ensure there is additional height clearance under the unit to
ensure normal airflow to the unit.
47YMAE Air-Cooled Inverter Scroll Chiller and Heat Pump
To Next Page
Loading...
