Honeywell R7426C, R7426B, R7426A dimensions Selecting Clock and Schedules with RTC, only

R7426A,B,C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL-TIME CLOCK

Selecting Clock and Schedules (with RTC, only)

DATE & TIME	DATE & TIME
SELECTION	ADJUSTMENT
STANDARD	STANDARD
SCHEDULE	SCHEDULE
SELECTION	PROGRAMMING
HOLIDAY	HOLIDAY
SCHEDULE	SCHEDULE
SELECTION	PROGRAMMING

Fig. 13. Clock and schedules selection mode

The clock and schedule selection mode is provided to select real-time clock (RTC), standard schedule (SCH), or holiday schedule (Hol) for programming (see Fig. 13).

Pushing the + or - button scrolls through the selection list.

Adjusting Date and Time (with RTC, only)

This mode is used to adjust date and time (real-time clock) by the input sequence shown in Fig. 14.

During date adjustment, the weekday is calculated auto- matically and need not be programmed. The 29th of February is adjustable only for leap years.

Pushing the SEL button returns to the selection mode, ignoring adjustments which have not been confirmed by the SET button.

Due to battery change or low battery, the date / time can be invalid and is displayed as --.--.-- / --:--on the LCD. In this case the controller behaves like a controller without real-time clock. If the occupancy input is inactive, the controller will be assumed as occupied.

	OR	TO ADJUST
TIME ADJUSTMENT		HOURS
	OR	TO ADJUST
		MINUTES
		Date
	OR	TO ADJUST
		YEAR
ADJUSTMENTDATE
		Date

OR	TO ADJUST
	MONTH
	Date
OR	TO ADJUST
	DAY

Fig. 14. Date and time adjustment mode

Programming Standard Schedule (with RTC, only)

The standard schedule programming is used to program up to 6 schedule points for each weekday as well as for three holiday types. The controller mode (off, night, standby or comfort) will be switched at these programmed schedule points.

The first step of the schedule programming (see Fig. 15) is to select a weekday or holiday type as follows:

1.Mo ... Su as single

2.H1 ... H3 as single

3.Mo ... Fr grouped

4.Sa and Su grouped

5.Mo ... Su grouped

The switching time is adjustable in steps of 10 min. To ignore a schedule point, the displayed switching time must be set to ‘--:--’ by adjusting it between step 23:50 and 0:00 or by

pushing the + and - button simultaneously.

Pushing the SEL button returns to the selection mode, ignoring adjustments which have not been confirmed by the SET button.

	TO SELECT
OR	WEEKDAY,
	WEEK GROUPS,
	OR HOLIDAY
	TYPES
OR	TO ADJUST
	SCHEDULE
	POINT
	Tu
OR	TO ADJUST
	SWITCHING
	TIME
	Tu
OR	TO ADJUST
	CONTROLLER
	MODE
	Tu

Fig. 15. Standard schedule programming

17 EN1B-0203GE51 R0507C