Daikin WMC Installation, Operation And Maintenance Manual page 32

Cooling Tower Bypass VALVE Setpoints
Figure 30: Tower Bypass VALVE Setpoint Screen
Table 7: Tower Bypass VALVE Setpoint Settings (See
Description
Valve Control Slope Gain
Valve Control Error Gain
Valve Control Range (Max)
Valve Control Range (Min)
Temp - Max Start Position
Maximum Start Position
Temp - Min Position
Minimum Start Position
Stage Down @
Stage Up @
Valve Deadband (Lift)
Valve Deadband (Temp)
Valve Target (Lift)
Valve Target (Temp)
Tower Valve Type
NOTE: Table 7 relies on Setpoints 1 and 2 in
Daikin Applied technician. Contact a Daikin Applied service representative for more information.
IOM 1210-1 • MAGNITUDE
No . Default Range
15 1 0 to 99
14 20 0 to 99
13 100% 0 to 100%
12 10% 0 to 100%
11 90 °F 0 to 100 °F
10 100% 0 to 100%
9 60 °F 0 to 100 °F
8 10% 0 to 100%
7 20% 0 to 100%
6 80% 0 to 100%
5 1.0 psi 0 to 20.0 psi
4 1.0 °F 0 to 10.0 °F
3 30 psi 10 to 130 psi
2 65 °F 40 to 120 °F
1 NC (To Tower) NC, NO
Table 8 on page
MODEL WMC CHILLERS
®
page 32 for complete explanation.)
Password
T
T
T Maximum valve position, overrides all other settings
T Minimum valve position, overrides all other settings
Condenser EWT at which valve should be open to tower. Valve position
T
T Initial valve position when condenser EWT is at or above Setpoint # 9
T Condenser EWT at which initial valve position is set to Setpoint # 6
T Initial position of valve when condenser EWT is at or below Setpoint # 9
Valve position below which the fans can stage down (Tower - Setpoint
T #2 = Valve Stage Down VFD speed below which the next fan speed can
Valve position above which the fans can stage up (Tower - Setpoint #2
T = Valve Stage Down VFD speed above which the next fan speed can
T
T
Target for lift pressure (Tower - Setpoint #1= Lift), Works with Setpoint
T
Target for condenser EWT (Tower Setpoint #1= Temp), Works with
T
T Normally closed (NC) or normal open (NO) to tower
31. The setpoints listed in
30
Comments
Control gain for temperature (or lift) slope
Control gain for temperature (or lift) error
is set to SP8
turn off (Tower - Setpoint # 2 = valve/VFD
turn on (Tower - Setpoint # 2 = valve/VFD
Control deadband, Tower - Setpoint #1=Lift
Control deadband, Tower Setpoint #1=Temp
# 5
Setpoint # 4
Table 7 should only be changed by a
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o
peraTIon