Honeywell UDC2500 manual Using Manual Tune at start-up for Duplex Heat/Cool

Monitoring and Operating the Controller

This selection results in performance tuning over the full range utilizing both Heat and Cool outputs to acquire blended tune values that are then applied to both Heat and Cool tuning parameters. Both PID sets are set to the same values.

Table 4-13 Procedure for Using BLENDED TUNE at Start-up for Duplex Control

Step	Operation	Press	Result
1	Configure LSP1		Until SP (Local Setpoint 1) shows
		Lower
		Display	in the lower display.
2		or	Until the Setpoint is to the desired
			value.
3	Switch to		Until the “A” indicator is lighted (on
		M-A
	“Automatic” Mode	Reset	controllers with Manual option).
4	Show Tuning		Until “NoTUNE” is shown on lower
		Lower
	Prompt	Display	display.
5	Initiate Tuning		Select “DoSLOW” or “DoFAST” in
			lower display.
6	Tuning in operation		Upper display will flash “TUNE” as
		Lower
		Display	long as ACCUTUNE process is
			operating. When process
			completes, tuning parameters are
			calculated and lower display will
			show “NoTune” prompt.

4.11.5Using MANUAL TUNE at start-up for Duplex (Heat/Cool)

When DUPLEX has been configured for MANUAL. This selection should be used when tuning is needed only for the HEAT zone or only for the COOL zone but not both. If Local Setpoint 1 is used, then the controller will perform a HEAT zone tune. If Local Setpoint 2 is used, then the controller will perform a COOL zone tune.

Table 4-14 Procedure for Using MANUAL TUNE for Heat side of Duplex Control

Step	Operation	Press	Result
1	Configure LSP1		Until SP (Local Setpoint 1) shows
		Lower
		Display	in the lower display.
2		or	Until LSP1 is a value within the
			Heat Zone (output above 50%).
3	Switch to		Until the “A” indicator is lighted (on
		M-A
	“Automatic” Mode	Reset	controllers with Manual option).
4	Show Tuning		Until “NoTUNE” is shown on lower
		Lower
	Prompt	Display	display.

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