18
CVS-21HA.rev.03
d5
d10
TEMPERATURE CURVE
MINIMUM SPEED CURVE
d5 to d9 (adjustable)
d10 (not adjustable)
POINT
1
POINT
2
However, if the room temperature falls below the following values:
(1) Stage 3 is used for cooling: "set point - 5°F (2.8°C)"
(2) Stage 3 is used for heating:
"set point - 5°F (2.8°C) - heater offset - differential 3"
or
"set point" if the preceding value is greater than the set
point
the fans will begin to run at the minimum speed specified for the first point
of the curve and will continue to do so as long as the room temperature
remains below the set point. When the room temperature rises above the
set point, the fans will return to the current minimum speed.
When the last point of the curve is reached, the curve becomes deacti-
vated. The controller maintains the last minimum speed of the curve until
the curve is reactivated or until a new single minimum speed is specified.
The minimum speed curve and the temperature curve are related in the
following ways:
The minimum speed curve can be activated only if the temperature
curve is already activated.
All points of the minimum speed curve, other than the first one, are
automatically given day numbers identical to those specified for the
temperature curve. Only the first point of the minimum speed curve has
an adjustable day number. This day number must be higher or equal to
the day number specified for the first point of the temperature curve
and lower that the day number specified for the second point of the
temperature curve.
For example: