Engineered Comfort T1075N User manual

Table of Contents
Front Panel .......................................................................................2
Display..............................................................................................3
Quick Start Set the clock and go .............................................................6
Selecting the Heat or Cool Mode ........................................................7
Basic Operation.................................................................................8
Overriding the Daily Schedule..........................................................12
Programming Occupied / Unoccupied ....................................................13
Advanced Setup ..............................................................................18
About Advanced Features & Operation.............................................24
This equipment has been tested and found to comply
with the limits for a Class A digital device pursuant
to Part 15 of the FCC Rules.These limits are designed
to provide reasonable protection against harmful
interference when this equipment is operated
in a commercial environment.This equipment
generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance
with the instruction manual, may cause harmful
interference to radio communications. Operation of
this equipment in a residential area is likely to cause
harmful interference, in which case the user will be
required to correct the interference at his/her own
expense.
This Class (A) digital apparatus meets
all the requirements of the Canadian
Interference-Causing Equipment
Regulations.
Cet appareil numérique de la Classe
(A) respecte toutes les exigences du
R`eglement sur le matériel brouilleur
du Canada.
Follow Installation Instructions carefully. Disconnect
Power to the Heater/Air Conditioner before removing
the old thermostat and installing the new thermostat.
CAUTION
IMPORTANT
North American Emissions Compliance
United States Canada
© Copyright 2015, All Rights Reserved T1075N
1

Front Panel
2
Mode Fan
AUTO
COOL
HEAT
1Liquid Crystal Display with Thermoglow
2Up/Down Buttons
3Mode Button
4Fan/Override Button
5Heat or Cool Indicator
Heat = Red, Cool = Green
1
32
4 5

Display
3
1Mode Indicators - Page 7-10
Selects the operational mode of the equipment.
HEAT - Indicates the heating mode.
COOL - Indicates the cooling mode.
AUTO - Indicates the system will automatically changeover between
heat and cool modes as the temperature varies.
PROGRAM ON - Indicates the time period program is enabled to run.
OFF - Indicates heating and cooling are turned o.
2 Clock with Day of the Week - Page 6
Indicates the current time and day. This clock is also used to
program the time period schedules.
3Room Temperature Display
Indicates current room temperature.
4Desired Set Temperature - Page 11
Indicates desired room temperature(s).
OUTSIDE
3
1
24
1
1
1
4

Display
4
5Override icon - Page 9 & 18
Indicates the program is currently being overriden for up to six hours.
6Occupied & Unoccupied icons - Pages 10-14
Indicates the program number: Occupied 1, 2, 3, or Unoccupied.
7Setup icons - Pages 15-19
Indicates the thermostat is in the advanced setup mode.
8Fan icon - Page 8
Indicates fan operation.
Fan = low speed
Fan = medium speed
Fan = high speed
When only the Fan icon is displayed, the fan is in the Auto mode and
will run only when necessary to heat or cool.
OUTSIDE
8
67
5

Display
5
9Start & Stop icon - Page 14
Appear when programming occupied time periods.
10 Locked icons - Pages 27
Indicates keypad has been locked.
OUTSIDE
910

Quick Start Set the Clock and Go
6
Press the MODE and FAN buttons at the same time
for two seconds to enter Setup screens.
During Setup and
Programming: Pressing
the UP or DOWN button
will modify the ashing
selection.
Tip: To change hours
quickly, press and hold
the FAN button and
press the UP or DOWN
button.
Press the MODE and FAN
buttons at the same
time to return to normal
operation.
The thermostat is preprogrammed from the factory to operate a 4 pipe system without
the need for further programming.
FAN
FAN
MODE
MODE
Setting the Clock
Setting the Day MODE
Press
To adjust the
Clock or Day,
Use

Selecting the Heat or Cool Mode 4-Pipe Operation
7
Heating Only
The HEAT setting indicates the temperature
that the room has to fall to before the
heating source will turn on to heat the room.
Cooling Only
The COOL setting indicates the temperature
that the room has to rise to before the
cooling source will turn on to cool the room.
Heating or Cooling
AUTO will automatically select heat or cool
based on room temperature demand.
Time Schedule for Heating or Cooling
Program On will activate the stored timer
operation for the heating and cooling
setpoints (occupied or unoccupied periods).
O
OFF indicates both heating and cooling are
turned o.
Press
MODE
Press
MODE
Press
Press
MODE
MODE
Fan
Fan
Fan
Fan
Select Mode by Pressing the MODE Button

Basic Operation
8
Selecting Your Desired Temperature (adjusting the setpoints)
Fan Operation
AUTO OR PROGRAM MODE
Pressing the UP or DOWN button in Auto or Program
mode will adjust both the heat and cool set temperatures
simultaneously.
Adjust the desired set
temperature with the
buttons
Pressing the FAN button will run the fan in low, medium, or high
speed continuously (see below and page 25).
When only the Fan icon is displayed, the fan is in the Auto mode
and will run only when necessary to heat or cool (see below and
page 25).
Note: If the thermostat is placed in the O mode, the fan will de-energize (see page 7).
Fan
Fan Fan
Fan FAN
Fan
Press
FAN
Press
FAN
Press
FAN
Press
FAN
Press
Fan
Low Speed Medium Speed High Speed Auto

Basic Operation
9
Overriding the Daily Schedule
Pressing and holding the FAN button for 5 seconds may be used to interrupt the
normal time schedule programming of the thermostat.The override feature may only
be used when the thermostat is running the time schedule, in Program On mode.
Unoccupied Operation - During programmed, unoccupied periods pressing and
holding the FAN button for 5 seconds will temporarily force the thermostat into
Occupied 1 comfort settings for one to six hours (step #14, page 18). The Override
icon will be illuminated during this time. If you press and hold the FAN button while
the thermostat is currently overriding the daily schedule, this will reset the timer,
returning the thermostat to the correct time period program for the day.
Occupied Operation - Pressing and holding the FAN button for 5 seconds during a
programmed Occupied time period will have no eect.
Press
FAN FOR
5 SECONDS

Programming Occupied & Unoccupied Periods
10
Press the MODE button. While holding MODE, press
the UP button for two seconds to enter time period
programming.
MODE
Select the maximum # of occupied
periods to be used on any one day.
Typically, most installations use
only Occupied 1. (1,2 or 3)
Adjust the cooling setpoint for
Occupied 1. (35˚ - 99˚)
Adjust the heating setpoint for
Occupied 1. (35˚ - 99˚)
Adjust the cooling setpoint for
unoccupied periods. (35˚- 99˚)
Press
MODE
Press
MODE
Press
MODE
Press
MODE
Continued

Programming Occupied & Unoccupied Periods
11
Adjust the heating setpoint
for Unoccupied periods.
(35˚- 99˚)
Select day of the week for
Occupied 1. (Mo - Su)
Adjust the start time for
Occupied 1.
Adjust the stop time for
Occupied 1.
Select Occupied 1 to run on
this day (On), or not to run
on this day (O).
Continued
On
O
Press
MODE
Press
MODE
Press
MODE
Press
MODE
Press
MODE

Programming Occupied & Unoccupied Periods
12
Select Yes or No to copy the
previous day’s program to
this day.
The copy command becomes available after the maximum # of occupied periods are
programmed in a day. This example uses 1 as the maximum occupied periods ever
programmed in one day.
Select day of the week
for Occupied 1. (Tu - Mo)
Adjust the start
time for occupied 1.
Continued
Yes
No
Selecting Yes, then pressing mode will
copy the previous day’s program and then
will ask the same copy question again. If
yes is selected each time, this routine will
repeat until Saturday is copied to Sunday.
After Saturday is copied to Sunday, the copy
command is unavailable.
MODE
Press
If Yes is selected:
If No is
selected:
Press
MODE
Press
MODE
Press
MODE

Programming Occupied & Unoccupied Periods
13
Adjust the stop time
for Occupied 1.
Select Occupied 1 to run on
this day (On), or not to run
this day (O).
If no is selected, as in previous steps ashing prompts for input will appear for start
and stop times for Occupied 1. If more than one occupied period was selected on
page 10, then cool/heat setpoints, and start/stop times for additional occupied
periods will be prompted.
Select Yes or No to copy the pre-
vious day’s program to this day.
Yes
No
On
O
Selecting Yes, then pressing mode will copy the
previous day’s program and then will ask the
same copy question again. If yes is selected each
time, this routine will repeat until Saturday is
copied to Sunday. After Saturday is copied to
Sunday, the copy command is unavailable.
MODE
Press
MODE
Press
If Yes is selected: If No is
selected:
Press
MODE
OUTSIDE

Programming Occupied & Unoccupied Periods
14
PROGRAMMING NOTES
You will be prompted to enter both heat and cool setpoints even if the
thermostat is congured for heat only, or cool only.
• IfonlyOccupied1isselected,theOccupied2&3stepswillbeskipped.
Further, if only 2 occupieds are selected, the Occupied 3 steps will be skipped.
• Heat&CoolsetpointsforOccupied1arethesameforeachday.Heat&
Cool setpoints for Occupied 2 & 3 can be adjusted dierently for each day, if
desired.
• If the start time is set for later than the stop time, the program will
run from the start time to midnight and from midnight to the stop time
on the same day. For example: 9:00pm start, 8:00am stop, on MTWTF. This
program will run from 12:00am MTWTF to 8:00am MTWTF and again from
9:00pm MTWTF to 12:00pm MTWTF.
• TheUnoccupiedsettingstakeeectatalltimeswhen:(1)theprogramis
on and (2) the current time is outside a preset occupied period. For this
reason start and stop times aren’t necessary for unoccupied.
• Ifthesame start and stop times are programmed in for an occupied
period, then it will run 24 hours.
• Ifoneoccupiedperiodstartsandstopswithinanotheroccupiedperiod,the
lower occupied # has priority. For example: If Occupied 3 is programmed
to be“on”24 hours, and Occupied 2 is programmed to run that day, then
Occupied 2 settings will take over from Occupied 3 between Occupied 2
start and stop times.
• WhenthetimeperiodprogrammingforUnoccupiedisintheOverride
mode (see page 9), the Heat & Cool setpoints for Occupied 1 are used.

Advanced Setup
15
Select Display operation:
On = Full Display
O = Minimal Display
See page 25
Press the MODE and FAN
buttons at the same time
for 10 seconds to enter
Advanced Setup screens.
NOTE: Each step # is located
at the top right corner of the
display for easy reference.
MODE FAN
Display On
Display O
Adjust the time of day.
Tip: To change hours quickly,
press and hold the FAN
button and press the UP or
DOWN buttons.
Select the day of the week. Setup
Setup
Setup
ON
Press
MODE
Press
MODE
Press
MODE
Continued

Advanced Setup
16
Select display operation:
1= Single Setpoint
2= Dual Setpoint See page 29
Continued
MODE
Press
MODE
Press
MODE
Press
Note: When Single Setpoint is selected, the heating or cooling setpoint
will always be displayed. To display the room temperature, press and hold
the MODE button for two seconds. The degree icon will blink when the
large number is displaying room temperature and will remain solid when
displaying the heating or cooling setpoint.
Setup
Setup
OFF
OFF
AUTO
Setup
On
On
O
O
Select operation when
fan is in the Auto mode:
On = continuous low speed fan
O = only energize during
a heating or cooling cycle.
See Page 25, Note #2
See page 22 for further explanation
Adjust deadband for 1st Stage

Advanced Setup
17
Adjust the minimum dierence
between cooling & heating setpoints.
(0˚ - 6˚)
Select backlight operation:
On - Light continuously
O - Light for 8 seconds
after a button press
On
O
Setup
Setup
OFF
COOL
HEAT
Setup
Setup
OUTSIDE
OFF
MODE
Press
MODE
Press
MODE
Press
MODE
Press
Continued
On
O
Select sensor operation:
On - read only Duct sensor
O - control to Duct sensor
Select thermostat
operation in degrees
Fahrenheit or Celsius.
C
F
Sensor Reading

Advanced Setup
18
NO
NC
Adjust the amount of time
override will be active during
the unoccupied time period.
(0-6 hours)
Dry Contact
NO = Normally Open
NC = Normally Closed
See Page 23
MODE
Press
Continued
Setup
Setup
Override

Advanced Setup
19
After programming is complete, press the MODE and FAN buttons at the
same time for two seconds to leave the Setup screens. If no buttons are
pressed, the display will leave the setup screens after 30 seconds.
Unoccupied Setpoints
Occupied
O
Unoc-
cupied
Select Dry Contact
Unoccupied operation:
Unoccupied - when the
Dry Contact is closed, the
thermostat will control to the
Unoccupied setpoints
O -when the Dry Contact is closed, the
thermostat will turn o.
Select Dry Contact operation:
Occupied - the thermostat
will enter the Occupied mode
when the Dry Contact is closed.
Unoccupied -the thermostat
will enter the Unoccupied mode when the Dry
Contact is closed.
Step #17 only appears if step #16 = Unoccupied.
Setup
unoccupied
Setup
occupied
MODE
Press