McQuay AGS 225D

OM AGSD-1 25
Dynamic Default Values
The fan staging dead bands have different default values based on the VFD enable setpoint.
When the VFD enable setpoint is changed, a set of default values for the fan staging dead
bands is loaded as follows:
VFD is Enabled VFD is Disabled
Setpoint
Default
loaded (
o
F)
Setpoint
Default
loaded (
o
F)
Stage 1 On Deadband 8
Stage 2 On Deadband 5 Stage 2 On Deadband 10
Stage 3 On Deadband 8 Stage 3 On Deadband 11
Stage 4 On Deadband 10 Stage 4 On Deadband 12
Stage 5 On Deadband 8 Stage 5 On Deadband 13
Stage 6 On Deadband 8 Stage 6 On Deadband 13
Stage 7 On Deadband 8 Stage 7 On Deadband 13
Stage 8 On Deadband 8 Stage 8 On Deadband 13
Stage 2 Off Deadband 8 Stage 2 Off Deadband 20
Stage 3 Off Deadband 7 Stage 3 Off Deadband 16
Stage 4 Off Deadband 6 Stage 4 Off Deadband 11
Stage 5 Off Deadband 5 Stage 5 Off Deadband 8
Stage 6 Off Deadband 5 Stage 6 Off Deadband 8
Stage 7 Off Deadband 5 Stage 7 Off Deadband 8
Stage 8 Off Deadband 5 Stage 8 Off Deadband 8