tekmar 544 Thermostat Installation User Manual

Page 27

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D 544 - 07/08

Schedule Mode Event

24Hr

Sat

Sun

Mon

Tue

Thu

Fri

4 events per day

Wake

6:00 AM

Unoccupied

8:00 AM

Occupied

6:00 PM

Sleep

10:00 PM

2 events per day

Occupied

6:00 AM

Unoccupied

10:00 PM

Schedule Mode

The schedule mode can have either 4 or 2 events per day.
An event is a time at which the thermostat changes the set
temperature. The event time can be set to the nearest 10
minutes. If you wish to have the thermostat skip the event,
enter “--:--“ as the time. The “--:--“ time is found between
11:50 PM and 12:00 AM. See the table, Schedule Mode,
for more details regarding types of events.

Optimum Start / Stop

Section K

Occ

70°F (21°C)

UnOcc

65°F (18°C)

Room

Temp.

Delay Period

Without Optimum Start/Stop

Optimum Start/Stop

Recovery Period

10P.M. 11P.M.

8A.M. 11A.M.

9P.M. 10P.M.

5A.M. 8A.M.

Occ

70°F (21°C)

UnOcc

65°F (18°C)

Room

Temp.

Delay Period

Recovery Period

Optimum

Stop

Optimum

Stop

Setback

Period

Optimum

Start

Setback

Period

When using a schedule, there is a time lag as one event
transitions to another. The four possible transitions are:
•

• Wake to Unoccupied
•

• Unoccupied to Occupied
•

• Occupied to Sleep
•

• Sleep to Wake
When an outdoor temperature measurement is available,
the Optimum Start / Stop feature predicts how long the
temperature transition takes. This allows the thermostat to
operate the heating or cooling system before the scheduled
event in order to have the room at the desired temperature
at the scheduled event time.
When an outdoor temperature measurement is not
available, then the Optimum Start / Stop feature operates
slightly differently. First, the thermostat predicts how long
the transition takes when changing from a low temperature
to a high temperature. It does not track transitions where
the temperature setting drops from a high temperature to
a low temperature. When cooling, the cooling system is
allowed to turn on 30 minutes prior to the beginning of a
period that requires cooling.
•

• Locate the Optimum Start / Stop setting in the Adjust

menu.