Glossary - Ovation 214 User Manual

OVATION 214

GLOSSARY

BANDWIDTH: The temperature interval over which the variable-
speed fans of a given stage increase or decrease in speed proportion-
ally to the temperature.
CASCADING HEATERS: Heaters operate in a sequence. As the av-
erage room temperature falls, additional heaters are turned on as
needed.
DEFAULT VALUE: A typical parameter setting defined at the fac-
tory.
DIFFERENTIAL: The differential is the temperature difference be-
tween the moment the constant-speed fans or heating units of a
given stage start running and the moment they return to a stop.
MINIMUM VENTILATION CYCLE: When the room temperature is
below the set point, the Stage 1 fans operate intermittently to pro-
vide minimum ventilation to the room.
MINIMUM VENTILATION SPEED RAMP: When Stage 1 operates
variable-speed fans, they will run at minimum speed during the mini-
mum ventilation cycle. The user can define a minimum ventilation
speed ramp to adjust the Stage 1 minimum speed automatically over
a given time period. The minimum speed increases over time as the
animals grow.
OFFSET: An offset is a temperature difference from the set point
that normally defines a cut-off point for a stage operation. For ex-
ample, a heater offset of 2°F means the heaters will turn off at 2°F
below the set point.
STAGE 1 RAMP: When the temperature rises to the point where
Stage 1 constant-speed fans are needed for cooling, the running time
of the fans is increased gradually from the minimum ventilation set-
tings up to full operation. Likewise, when the temperature falls be-
low the set point, the running time is decreased gradually until the
minimum ventilation settings are reached.
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