Acme PP-32 - Manual (Page 38)

38
PP-32
KOOLMASTER PP-32
REV.01
5.7 FAN STAGES SETTINGS
The PP-32 controls up to 16 on-off fan stages. These stages operate in
a sequence to increase the level of ventilation as the room temperature
rises. Each stage can also activate relays in timer mode. The user
defines a start and stop temperature for each stage. When the room
reaches the start temperature, the stage is activated. When the room
reaches the stop temperature, the stage is deactivated. The following
diagram shows how fan stages operate.
Start temperatures are defined with respect to the set point and with
respect to each other. This means that when one of these values is
adjusted, all the consecutive values are adjusted by the same amount.
For example, if the set point is increased by 1°F, the start temperatures
for all fan stages will be increased by the same amount. The minimum
temperature difference between two start temperatures is 0.5°F.
Start and stop temperatures of all fan stages are set separately for the
summer and winter seasons. Refer to sec. 5.2.2 to select the proper
season.
The relay assignement for fan stages 1 to 4 differs depending on the
selected program. Refer to section 5.2 for further information on the
controller's programs and to section 5.14.6 to assign fan stage relays.
STAGE S+1
VENTILATION
LEVEL
ROOM T°
STAGE S
STAGE S FANS
TURN OFF
STAGE S FANS
TURN ON
STAGE S+1
FANS TURN OFF
STAGE S+1
FANS TURN ON
OPERATION OF FAN STAGES