TMA54-EXT1
Specification & Installation Instructions
2
Mounting Instructions
CAUTION: Risk of malfunction. Remove power prior to separate thermostat cover from its base.
A. Remove the screw (captive) holding the base and the front cover of the thermostat.
B. Lift the front cover of the thermostat to separate it from the base.
C. Pull wire through the base hole.
D. Secure the base to the wall using wall anchors and screws (supplied). Make the appropriate connections.
E. Mount the control module on the base and secure using the screw.
Terminal Descriptions
Terminals TMA54-EXT1
1
Common
2
24 Vac
3
Exterior temperature sensor
4
Night set back input*
5
Heating 1
st
ramp
6
Heating 2
nd
ramp
7
Cooling 1
st
ramp
8
Cooling 2
nd
ramp
9
TPM (time proportional modulation)
* For a replacement in an existing night set back (NSB) loop with thermostat PTA, the NSB input, terminal #4, of the TMA should be
isolated for a good performance.
For controlling an electric heater with a modulating signal (0-10Vdc), use terminal 6 (Heating 2
nd
ramp)
Settings on PC Board
Mode Selection
Jumper (JP1) on RUN:
Thermostat is in
Operation mode
.
Thermostat must be set in this mode to operate
properly.
If not locked, set point and control mode (Heating &
Cooling ON, Cooling only ON or Heating only ON)
may be modified by the end user.
Jumper (JP1) on PGM:
Thermostat is set in
Programming mode
.
Refer to the following section more details
Programming Mode
When in this mode this symbol
is displayed. Please press on
button to advance to the next program function and press on
or
to change value. You can exit programming mode at any time, changed values will be recorded.
Step Display
Description
Values
1
Internal temperature sensor Calibration:
Display switches between “
tS1
” and temperature read by internal
temperature sensor.
You can adjust the calibration of the sensor by comparison with a known
thermometer. For example if thermostat has been installed in an area where
temperature is slightly different than the room typical temperature
(thermostat place right under the air diffuser).
Range : 10 to 35ºC [50 to 95ºF]
Increment:1ºC [1ºF]
NOTE: This thermostat has been
calibrated at factory
2A
Locking the set point :
Display switches between “
LO
C
” and “
Stp
”.
You can lock or unlock the set point adjustment by end user. If locked the
lock symbol will appear.
If you do not want to lock set point adjustment by end user, go directly to
step #3.
Default value: Unlocked
A
E
D
C
B
PGM
RUN
PGM
RUN
