Mitsubishi Electric PAA-A18AA1 Service Manual page 14

NOTE
The above airflow restriction is limited to the heat pump operation only.
WARNING
• Ensure the gas furnace complies with ANSI-Z21.47/CSA2.3 standards by NRTL 3rd
party lab such as AGA, CSA, UL, or ETL/Intertek. Mitsubishi Electric US, Inc. air
conditioner/heat pump system must only be connected with ANSI-Z21.47/CSA2.3
certificated gas furnace.
– Improper connection may result in poisonous gas, fire, explosion, electric shock or
water leak.
• Do not install the PAA unit onto any OIL or DRUM type furnaces.
– Failure to follow this warning could result in personal injury or death.
• Do NOT install the PAA unit on any furnaces or applications where supply air
temperature could exceed 200 ºF.
– Failure to follow this warning could result in personal injury or death.
• The PAA unit should only be installed on a furnace with an output capacity no greater
than 300% of the rated PAA unit cooling capacity.
– Failure to follow this warning could result in personal injury or death.
IMPORTANT
The furnace fan should be configured such that the airflow is greater than or equal to
350 CFM per ton and less than or equal to 400 CFM per ton of nominal PAA unit cooling
capacity.
In downflow orientation, the furnace fan should be configured to maintain an airflow face
velocity below 350 ft/min to prevent water blow-off.
Specifications are subject to change without notice.
PAA-A18, 24, 30, 36, 42AA1/BA1/CA1
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