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Cycle Rate Selection:

The cycle rate selection determines the cycle rate for heating. All
units are shipped with a cycle rate of 1.0, the medium rate. To
change the cycle rate press the “up” and “down” buttons together for
approximately 10 seconds. The display will change to diff and 1.0.
Use the “up” or “down” button to select a new cycle rate. After
approximately 15 seconds the display will return to normal.
Selection Criteria: 0.5 is the fastest cycle rate, 2.0 is the slowest.

Setting Parameters:

There are four parameters to set depending on the model. °F/°C
selection, backlight mode selection, display mode selection and cycle
rate selection.

°F/°C Selection:

All units are shipped in °F display mode. °C can be selected by
moving the jumper to the °C position. Press reset after changing
jumper position.

Resetting °F/°C will erase any user

Warning:

program schedule and replace it with the factory default schedule.

Blacklight Mode Selection: (Model TDMP24-H1-CB)

All units are shipped with the backlight jumper in the left position,
auto mode. The backlight comes on whenever the up or down button
is pressed. The backlight jumper in the right position keeps the
backlighting on continuously.

Display Button Selection:

All units are shipped with the display alternation between room
temperature, current setpoint and time-of-day. Pressing the display
button selects the display to show only room temperature or alternate
between actual room temperature, current setpoint and time-of-day.

Testing Basic Functions:

Check the basic functions in the manual mode. Turn the program
selection dial, located under the flip down cover, to “MANUAL”.

OFF:

1. With system switch in the “OFF” position, the thermostat turns off

the heating system.

2. Setpoint cannot be changed in the “OFF” position.
3. Actual room temperature will continue to be displayed.

Heat:

1. Set the system switch to “HEAT”.
2. The display will alternate between setpoint and actual room

temperature.

3. Press either “up” or “down” arrow twice to enter the “SET” mode.

Raise the setpoint by pressing the “up” button. To test, raise the
setpoint above room temperature. Heat should turn on within
3 minutes.

4. Press the “down” button to lower setpoint to 5°F below room

temperature. Heat should turn off in less than 1 minute.

Trouble Shooting Tests:

Using a voltmeter, confirm the supply voltage. With the system
switch in the OFF position, the voltage should measure between
18VAC and 30VAC from R and the other terminals. If you have
a 24V powered model, confirm supply voltage between R and C.
Briefly press the reset button to initialize the processor. The
LCD should power up.

To check Continuity:

(Using a Voltmeter with all loads

connected)

When thermostat is calling for Heat, meter should read 0VAC

A)

from “R” to “W”. When Heat is deactivated, meter should read

24VAC from “R” to “W”.

950-0248
11/06/15

OFF

HEAT

Reset

Disp

USE

BUTTONS

TO ADJUST

DISPLAY

LEAVE-RETURN

SCHEDULE

7 DAY

TIME    NOW

DAY      NOW

RUN PROG

MANUAL

RETURN

SLEEP

WAKE

LEAVE

TIME

TEMP

PROGRAM SELECTION

Manual

Actual

TEMP

5 DAY

72.3

°F/°C

Jumper

F

0

Reset

Button

Down

Button

Display

Button

Backlight

Jumper

Up

Button

2

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