Heat/Cool Changeover Set-Up - Daikin MicroTech III Operation Manuals

Heat/Cool Changeover Set-Up

Table 23: Heat/Cool Changeover Setup Menu
Item Display Name
Ctrl Temp Src=
Use Tstat Spt=
Occ Clg DB=
Clg Period=
Clg Gain=
Clg PAT=
Max Clg Chg=
Occ Htg DB=
Htg Period=
Htg Gain=
Htg PAT=
Max Htg Chg=
AplyTstatChg=
CalRemSpt@10°C=
CalRemSpt@50°F=
CalRemSpt@30°C=
CalRemSpt@86°F=
Ctrl Temp Src is an adjustable item which selects the
temperature sensor input to be used for the unit heating/
cooling changeover or occupied cooling and heating capacity
change decisions . For example, if the CtrlTemp Src parameter
is set to "Return," then the Control Temp parameter reads the
same value as the Return Air parameter .
Use Tstat Spt is an adjustable item used to set whether or not
to use the Tstat set point adjustment value for the Occ Clg Spt
and Occ Htg Spt .
Occ Clg DB is an adjustable item which sets a dead band
around the Occ Cooling Set Point parameter . For example, if
the Occ Cooling Set Point parameter is set to 75ºF and the Clg
Deadband parameter is set to 2ºF the dead band around the
set point would be from 76 .0ºF to 74 .0ºF .
Clg Period is an adjustable item which sets the "sampling
time" used in the PI control function to vary the DAT Clg Spt in
zone control applications .
Clg Gain is an adjustable item which sets the "gain" used in
the PI control function to vary the DAT Clg Spt in zone control
applications .
Clg PAT is an adjustable item which sets the "project ahead
time" used in the PI control function to vary the DAT Clg Spt in
zone control applications .
Max Clg Change is an adjustable item that sets the maximum
value for an increase or decrease of the DAT Clg Spt in zone
control applications .
Occ Htg DB is an adjustable item which sets a dead band
around the Occ Heating Set Point parameter . For example, if
the Occ Heating Set Point parameter is set to 70ºF and the Htg
Deadband parameter is set to 2ºF the dead band around the
set point would be from 69 .0ºF to 71 .0ºF .
OM 920-6 • MICROTECH UNIT CONTROLLER
Default Setting
RAT
No
2 .0°F
60s
0 .1
600s
5 .0°F
2 .0°F
60s
0 .1
600s
5 .0°F
No
No
No
No
No
Htg Period is an adjustable item which sets the "sampling
time" used in the PI control function to vary the DAT Htg Spt in
zone control applications .
Htg Gain is an adjustable item which sets the "gain" used in
the PI control function to vary the DAT Htg Spt in zone control
applications .
Htg PAT is an adjustable item which sets the "project ahead
time" used in the PI control function to vary the DAT Htg Spt in
zone control applications .
Max Htg Chg is an adjustable item that sets the maximum
value for an increase or decrease of the DAT Htg Spt in zone
control applications .
AplyTstatChg is an adjustable item that resets the controller.
This is required to affect changes to the Use TstatSpt
parameter .
CalRemSpt@10°C is an adjustable item used to calibrate
the digital space sensor minimum setpoint input when the
engineering units set to SI .
CalRemSpt@50°F is an adjustable item used to calibrate
the digital space sensor minimum setpoint input when the
engineering units set to English .
CalRemSpt@30°C is an adjustable item used to calibrate
the digital space sensor maximum setpoint input when the
engineering units set to SI .
CalRemSpt@86°F is an adjustable item used to calibrate
the digital space sensor maximum setpoint input when the
engineering units set to English .
40
Range
RAT
Space
MAT
OAT
None
No, Yes
0 .0–10 .0°F
0–999s
0 .0–100 .0
0–999s
0 .0–50 .0°F
0 .0–10 .0°F
0–999s
0 .0–100 .0
0–999s
0 .0–50 .0°F
No, Yes
No, Yes
No, Yes
No, Yes
No, Yes
M d
enu esCrIpTIons
Password Level
4
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