Air Balance - York Predator MagnaDRY DR090 Series Installation Manual

Single package air conditioners and single package gas/electric units

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Start the supply air blower motor. Adjust the resistances in both the supply and the return air duct systems to balance the air

distribution throughout the conditioned space. The job specifications may require that this balancing be done by someone other

than the equipment installer.

Johnson Controls Unitary Products

AIR BALANCE

Belt drive blower systems MUST be adjusted to the

specific static and CFM requirements for the appli-

cation. The Belt drive blowers are NOT set at the

factory for any specific static or CFM. Adjustments of

the blower speed and belt tension are REQUIRED.

Tighten blower pulley and motor sheave set screws

after these adjustments. Re-checking set screws

after 10-12 hrs. run time is recommended.

264276-XIM-B-1208

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