Installation Manual

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Single-Stage and Two-StageHeatPumpHeatingAirflow
COMFORT (default)
-- Heat Pump airflow is varied depend-
ing on outdoor temperature to maximize comfort.
EFF 325 -- Fixed airflow used to achieve specified ratings.
This is nominally 325 CFM/ton, but will vary if a 2--stage out-
door unit is used.
EFF 350
-- Fixed a irflow used to achieve specified ratings.
This is nominally 350 CFM/ton, but will vary if a 2--stage out-
door unit is used.
MAXIMUM
-- 400 CFM/ton.
Multistage Heat Pumps Heat Pump Heating Airflow
COMFORT (default)
-- Heat Pump airflow is varied depend-
ing on outdoor temperature to maximize comfort.
EFFICIENCY
-- Airflow to achieve specific ratings. At maxi-
mum stage, this is nominally 350 CFM/ton, but will vary with
stage and outdoor temperature.
MAXIMUM
-- 400 CFM/ton.
Single-Stage and Two-Stage Cooling Airflow
COMFORT (default)
-- cooling airflow is varied depending on
humidity and temperature demands settings. This selection en-
ables the full dehumidify and comfort capabilities of the system.
When COMFORT is not selected, the unit will not run reduced
airflows for dehumidification.
EFF 325
-- fixed airflow used to achieve specified ratings –
no dehumidification airflow reduction. This is nominally 325
CFM/ton, but will vary if a 2--stage outdoor unit is used.