Daikin MicroTech III Operation Manuals page 54

Energy Rvcy is an adjustable item which turns the optional
energy recovery system ON /OFF .
ER Wheel is a status only item used to indicate whether the
energy recovery wheel is currently ON or OFF .
Wheel Speed is a status only item that indicates the energy
wheel variable speed supply air fan speed .
Wheel Spd Cmd is a status only item that indicates the current
energy wheel variable speed supply air fan commanded speed .
ER LAT is status only item which displays the current discharge
air temperature leaving the optional energy recovery wheel .
ER EAT is status only item which displays the current exhaust
air temperature leaving the optional energy recovery wheel .
Min Exh T Diff is an adjustable item that sets a differential
below the calculated potential energy recovery exhaust air
frosting point . When the ER Exh T falls below the calculated
frosting point by more that this value, the energy wheel will be
driven to its minimum speed, or turned OFF, to prevent frosting .
Max Exh T Diff is an adjustable item that sets a differential
above the calculated potential energy recovery exhaust air
frosting point . Once the wheel is driven to minimum speed,
or turned off, to prevent frosting, it is driven back to maximum
speed, or turned ON, only when ER Exh T rises back above
the calculated frosting point by more that this value .
ER Whl Stg Tm is an adjustable item used to set a minimum
time period for operating at either the minimum or maximum
speed before action is taken to change speed during the frost
protect mode of operation .
ER Whl Off Tm is an adjustable item used to set the minimum
amount of time the energy wheel will remain off after being
turned OFF due to a frosting/condensation condition .
OM 920-6 • MICROTECH UNIT CONTROLLER
Rel Humidity is a status only item that indicates the current
relative humidity reading of the sensor .
Min Whl Spd is an adjustable item used to set the energy
recovery minimum wheel speed .
Intersect Pt is a status only item used to indicate the current
intersection point value from the psychometric chart where
potential for wheel frosting exists .
Fst Mgmt Meth is an adjustable item used to select the frost
protection method to be used on a constant speed energy
wheel application .
OA Fst Temp is an adjustable item used to set the outside air
frost temperature .
Defrost Time is an adjustable item used to set the duration of
a defrost cycle .
Defrst Period is an adjustable item used to set how often a
defrost cycle will be initiated .
Defrst On Tm is an adjustable item used to select how long
the constant speed energy wheel is energized during defrost .
Defrst Off Tm is an adjustable item used to select how long the
constant speed energy wheel is de-energized during defrost .
ER Whl Period an adjustable item which sets the "sampling
time" used in the PI control function .
ER Whl Gain is an adjustable item which sets the "Gain" used
in the PI control function .
ER Whl PAT is an adjustable item which sets the "project
ahead time" used in the PI control function .
ER Max Chg is an adjustable item that sets the maximum value
for an increase or decrease of the energy recovery wheel speed .
Capacity Limiting is an adjustable item used to turn ON and
OFF the energy wheel capacity limiting function .
54
M d
enu esCrIpTIons
www .DaikinApplied .com