tekmar 545 Thermostat Installation - Manual (Page 31)

31 of 40 © 2008 D 545 - 07/08
Filter Change Section J
To Clear
the filter
timer
+
Filter Symbol
The thermostat records the number of hours that the Fan
contact runs. When Fan 1 run time exceeds the Filter time,
then a Filter symbol displays. Once you replace the filter,
the Filter timer can be reset using the Clear Filter item.
•
• To reset the Filter item, go to the Adjust menu and select
the Clear Filter item.
Time Clock Section K
The thermostat has a built-in time clock to allow the
thermostat to operate on a schedule. A battery
- less backup
allows the thermostat to keep time for up to 4 hours without
power. The time clock supports automatic adjustment for
Daylight Saving Time (DST) once the day, month, and year
are entered. Use the Time menu to set the correct time,
day, month, and year.
Daylight Savings Time Modes
Mode DST Start DST End
1 1st Sunday in April Last Sunday in October
2 2nd Sunday in March 1st Sunday in November
Setting the Schedule Section L
To provide greater energy savings, you can operate the
thermostat on a programmable schedule. The schedule is
stored in memory and is not affected by loss of power to the
thermostat. A single thermostat zone or multiple devices
on the network can be assigned to follow the schedule of
one thermostat. On the 545, separate schedules can be
followed for heating and for cooling.
Zone Schedule
A zone schedule only applies to the thermostat on which
the schedule is programmed. The thermostat follows the
zone schedule and the events are not communicated to
other thermostats.
Master Schedule
If the thermostat is connected to other thermostats, then the
thermostat can operate on a master schedule. You can set
up a maximum of four master schedules on the tN4 network.
A master schedule is available to all devices on the tN4
network. Master schedules simplify installation since one
master schedule may be used by multiple devices.
To create a master schedule:
1. Assign a thermostat as a schedule master by setting the
Heat Schedule or Cool Schedule item in the Schedule
menu to Master (MST) 1 to 4.
Master
Schedule 1
Members of
Schedule 1
Members of
Schedule 2
Master
Schedule 2 None
Zone
Schedule
Zone 1 2 3 4 5 6 7 8
To follow a master schedule
1. Assign a thermostat to follow a master schedule, by
setting the Heat Schedule or Cool Schedule menu item
in the Schedule menu to Member (MBR) 1 to 4.
Once a thermostat is the master schedule, a clock symbol
and number appear on the display in the View menu. The
number identifies the master schedule number. This helps
you locate the master schedule if you need to change the
schedule.
You cannot have both the heating and cooling schedules
serve as the schedule master at the same time. Choose one
of the two to be the schedule master. The other schedule
can be a member of any master schedule.