25
ST 5220
QM 1336.rev.01
•
When room temperature < Set Point, stage 1 fans run at minimum
speed according to the minimum ventilation cycle.
•
At Set Point: stage 1 fans stop operating according to the minimum
ventilation cycle and increase in speed as the room temperature
rises.
•
At Set Point + Bandwidth: stage 1 fans reach full speed.
•
At Stage 2 Starting Temp.: stage 2 fans start running.
•
At Stage 3 Starting Temp.: stage 3 fans start running.
•
At Stage 4 Starting Temp.: stage 4 fans start running.
If the room temperature falls:
•
At Stage 4 Starting Temp. - 1.5
o
F: stage 4 fans return to a stop.
•
At Stage 3 Starting Temp. - 1.5
o
F : stage 3 fans return to a stop.
•
At Stage 2 Starting Temp. - 1.5
o
F: stage 2 fans return to a stop.
•
At Set Point + Bandwidth: the stage 1 decrease in speed as the
temperature falls.
•
At Set Point: stage 1 fans stop operating continuously and oper-
ate according to the minimum ventilation cycle at minimum speed.
•
When room temperature < Set Point, stage 1 fans run at minimum
speed according to the minimum ventilation cycle.
If room temperature rises:
