2-Way Communicating Thermostat
Hardware Installation and Operation Manual
Intended for connection to
Class 2 Circuit(s) Only (24 VAC)
Common Wire is Required
Manufactured by:
Lightstat Inc.
Barkhamsted, CT
www.lightstat.com
.....INSTALLERS....
CONTACT LIGHTSTAT FOR ACTIVATION
1-800-292-2444
For e-Stat™ Model Thermostat
1
Supply
Ductwork
Return
Ductwork
Roof Top Unit #1
Retail or restaurant
interior area
Your existing POS
computer and/or
network connection
e-Stat
Remote Room Sensor
Hub
Remote supply sensor is
located in supply ductwork
2-conductor
#18 low voltage
cable
2-conductor
#18 low voltage
cable
Existing
8-conductor
#18 low voltage
cable
Cat 6
cable
e-Stat Typical Wiring Configuration
1. Typically, the e-Stat™ should be located within
a few feet of the network equipment such as the
network switch. It may be located farther. The
maximum Cat 6 cable run is 328 ft
(100 meters).
2. Mount the Remote Room Sensor on a wall or
column in the conditioned space, away from
windows, doors and supply air ducts. (Refer to
page 9 for more instructions.)
3. Mount the Supply Air Sensor in the supply air
duct as close to the HVAC unit as possible.
(Refer to page 10 for more instructions.)
Note: You must use the remote temperature
sensor supplied. The e-Stat™ does NOT contain
an onboard temperature sensor.
2
Description:
The e-Stat
™
is a low voltage, solid state, automatic
changeover, heating/cooling thermostat with digital
display showing setpoints and room temperature.
The
e-Stat
™
is a 2-Way Communicating, remotely
programmable thermostat.
Standard Features:
• Control of up to two stages of heating
and cooling.
• Proportional plus Integral (P+I) control for
accurate, even temperature control.
• Automatic changeover from heating to
cooling with deadband to prevent short
cycling of HVAC equipment.
• Remotely programmable, adjustable deadband.
(5°F is default)
• Remotely congurable Y1, Y2 interstage
differential. (1.5°F is default)
• Intelligent pre-conditioning of the controlled
space prior to the start of the workday.
• Automatic randomized delay to prevent power
surges at power up. (4 to 12 minutes)
• Backlit display for easy viewing in low light
conditions.
• Support for optional humidity sensing.
• Contact Closure terminal input to monitor switch
closure.
• Limited Lifetime Warranty.
General:
Voltage Rating (min, max).........................20 to 30 VAC
Current Draw (typ).............................285 mA @ 24VAC
A1-A2-A3 Relay Load (max)................1 Amp @ 24VAC
G, Y1, Y2, W1, W2, O/B Load (max)...1 Amp @24VAC
Network:
Cabling........................Cat6 (UTP) with RJ45 connector
Ethernet....................................10/100BT Auto-Sensing
Wiring Cable Distance (Max).................................328 ft
Inside View - Door (Left)
Inside View - Base (Right)
ON
1 2 3
This th ermost at rec eive s programm ing vi a
E thernet cable connec tion .
S ome li mited te mperature adjust ment MAY
or MAY NO T be allow ed via the UP and
DOW N buttons .
TEC H SUPPOR T 800-292-2444
P leasant Valley , C T
OFF ON
1
2
3
1
2
3
-Mov e to ON fo r gas heat . Fan contr olled
by limit switch .
-L eave O FF for fan contr olled by Light stat
in heat c ycle ( typical f or electric heat ).
-Mov e to ON for no compres sor time del ays .
-L eave O FF for 3 minute compress or minimum r un
a nd minim um o
tim e delays .
-Mov e to ON to increase the Heatin g ( W1-W 2) di erential
to 3 d egrees f or m ore e
cien t Heat Pump opera tion .
-L eave O FF for (W 1-W 2) d i
erent ial of 1 .5 d egrees ,
typ ically used wi th Ele ctri c or Gas h eat .
WRA P 00003 R EV . ?
S WITCH SE TTINGS
3
Connecting the Outputs
Caution: Risk of Electrical Shock - More than one
disconnect switch may be provided. Disconnect
all power to device before servicing.
Remove the old thermostat from the wall taking note of
the wire colors on the back of the mounting kit
provided. Thread the thermostat cable through the
hole in the back of the
e-Stat
™
. Mount the e-Stat™
securely to the wall using the hardware provided.
The
e-Stat
™
should be leveled for cosmetic reasons.
GENERAL HVAC WIRING DIAGRAM
e-Stat
G
R
Y1
W1
W2
C
O
Y2
B
CLASS 2 XFMR
SYSTEM
TRANSFORMER
HVAC
EQUIPMENT
TERMINAL
STRIP
20-30 VAC
ONLY
A2
A1
A3
G
R
Y1
W1
W2
C
O
Y2
B
MAY BE USED
FOR NIGHT
SHUTDOWN
OF DAMPERS
OR OTHER
EQUIPMENT.
RELAY LOAD:
1 AMP (MAX)
@ 24VAC
CONNECT
AS REQUIRED
BY HVAC
EQUIPMENT
A1-A2-A3
C ONTACT
TERMINALS
ON e-Stat
FAN
HEAT 1
20-30 VAC ONLY
(C OMMON
)
(COMMON)
HEAT PUMPS
MAY REQUIRE
JUMPER
BETWEEN Y1
AND W1 TO
BRING ON
COMPRESSOR IN
BOTH HEATING
AND COOLING.
(SEE NOTES ON
PAGE 5)
HEAT 2
COOL 1
COOL 2
4
R - Hot Wire; one side of the control (20 - 30 VAC)
transformer. If two hot wires are present (as with RC and RH)
determine if they come from separate transformers. The e-Stat
™
must be installed on a single transformer
system.
G - Fan Wire.
W1 - First stage of heating.
Y1 - First stage of cooling.
When conventional rooftop equipment is selected, the interstage
differential is always 1.5°F. With heat pump switch #1 set to “ON”,
the interstage differential is 3.0°F for heating stages and 1.5°F for
cooling stages. (If using a humidity sensor, interstage differential
will increase during cooling to compensate for high humidity
conditions.)
C - Common or Neutral side of transformer. This must be
connected for the e-Stat
™
to operate.
W2 - Second stage of Heat or Auxiliary heat with heat pumps.
Y2 - Second stage of cooling.
O - This output will be active with a call for cooling.
Often used for heat pump reversing valve.
B - This output will be active with a call for heating.
(Connect O & B outputs as required by the HVAC equipment.)
Note: When connecting to a heat pump with Thermostat
Reversing Valve Control you will need to install a jumper
wire between W1 and Y1 at the e-Stat™. There should be no
connection between W1 on the e-Stat™ and the RTU terminal
strip. Aux heat is connected to W2.
Note: When connecting to a heat pump with Unit Reversing
Valve Control no jumper wire is required as the reversing valve is
positioned by the unit internal controls based on whether cooling
or heating is being called by Y1, Y2 or W1, W2.
A1, A2, A3 are dry contact relay terminals that may be used for
night shutdown of dampers or control of other equipment. This is a
separate relay with isolated contacts.
Relay load: 1 AMP (MAX) @ 24VAC.
Connecting the Outputs
5
A - Indicates day of the week.
B - Signal/Status L.E.D. Indicators.
C - Output designators.
D - Press once to see supply air temp and
“last program” information, 2nd press displays %
relative humidity (if a humidity sensor is in use).
E - Check button. Use to cancel time delays.
F - Temperature up/down buttons.
G - Fan On/Auto button.
H - System power button.
Front View - Front Door Open
Temp
ONFANAUTO
HEATSET
COOLS ET
OVERRIDE
NEW PROGRAM
SYSTEM OFF
REL
HUMIDITY
ERROR
REMOTE TEMP
MONTUEWEDTHUFRISATSUN
ON
ON
ON
ON
ON
ON
A
P
Cool 1
Cool 2
Fan
O
Heat 1
Heat 2
System
On/Off
Check
Fan
On/Auto
Read
Sensor
Yellow -
Website
program
active
Red -
Utility Program
active
Press to cancel
Time delays
On – Constant Fan
Auto – Fan only with
Heat / Cool cycle
Press to read
Supply Air Sensor
& Humidity (Optional)
Web controlled thermostat.
Buttons may be disabled.
Tech Support 800-292-2444
Turns entire system off
F
B
H
D
E
G
C
A
6
7
A - Output indicators. Illuminated “ON” and arrow indicates
output is active. Flashing arrow and steady “ON” indicates
output is being held on by time delay. Flashing arrow alone
indicates output is being held off by time delay.
B - Cooling temperature setpoint.
C - Indicates day of the week.
D - Current remote room temperature, supply air temp, or
ambient humidity.
E - REL HUMIDITY will ash to indicate setpoint reduction is
active.
F - Antenna icon indicates that an ethernet carrier is sensed.
G - Remote temperature sensor indicator.
H - Indicates status of hosting server communications.
I - If arrow and “ON” are not illuminated, the output is off.
J - Heating temperature set point.
K - Fan On/Auto indicator.
L - Indicates system is off.
M - Ramp symbol will be illuminated if space is actively being
preheated or precooled.
N - Solid “OVERRIDE” indicates the program has been over-
ridden with the Up/Down buttons if allowed locally. Flashing
“OVERRIDE” indicates remote override.
O - “New Program” will illuminate when “Read Sensor”
button is pressed once (provided thermostat has been
programmed).
P - Indicates AM or PM Local time.
Display Designators
COO LSET
AUTO FAN ON
ON
ON
ON
ON
ON
ON
MONTUEWEDTHUFRISATSUN
HEA TSET
SYS TEM OFF
OVERRIDE
NEW PROGRAM
ERROR
REMOTE T EMP
REL
HUMIDITY
P
A
Cool 1
Cool 2
Fan
O
Heat 1
Heat 2
H
P
M
CB
J
K
A
O
N
GF
E
L
D
I
The e-Stat
™
is used as a stand-alone thermostat to
control a single HVAC system. Do not attempt to control more than one HVAC unit with an
e-Stat
™
A Remote Temperature Sensor MUST BE installed for
the e-Stat™ to function properly. A Supply Air Sensor is
optional.
All wiring should be a minimum of #18AWG. Shielding
is not required.
Wiring Layout
8
TYPICAL
ROOFTOP
UNIT
SUPPLY AIR DUCT
S UPPLY AIR SENS OR
MOUNT O N DISCHARGE AIR DUCT W IT H
P RO BE I N DISCHARGE AIR ST REAM
REMOTE TEMPERATURE AND
HUMIDITY SENSOR
MOUNT IN SP ACE TO B E CONTRO LLED
10 WIRE #18A WG
2 WIRE #18A WG
2 WIRE #18A WG
NETWORK
CABLE
DO NOT INSTALL ON THE BOTTOM OF THE DUCT
Cat-6/6e
Remote Sensor Installation
The e-Stat™ must have a Remote Temperature Sensor
installed. A Supply Air Sensor is optional. These sensors
are supplied for each thermostat.
Note: See Appendix B for Remote Temperature and
Humidity Sensor.
Use #18 gauge 2-conductor twisted pair cable between the
e-Stat™ and the remote sensors. Remote sensors are
unaffected by wire runs of up to 500 feet.
Remote sensors do not have polarity, either wire may be
connected to either terminal. Shielded cable is not required
for remote sensors.
Mount the remote temperature sensor in the area to be
heated and/or cooled. If the remote temperature sensor is
installed where the old thermostat was, use the supplied wall
plate for cosmetic reasons.
Connect the 2-conductor cable to the two terminals marked
Remote Temperature Sensor. These are located in the cen-
ter of the bottom terminal block as seen in the gure below.
Note that this sensor is not designed to be placed into a
moving air stream.
9
Wire Nuts
(supplied)
REMOTE ROOM SENSOR
WIRING DIAGRAM
RELAYS: G, W1, Y1, W2, Y2, O, B,
A1, A2, and A3 rated 24 V ac, 60 Hz,
Class 2, 1A, resistive / pilot duty.
A1-A2-A3 Relay: Normal
position indicated.
Contacts reverse during
Unoccupied (night) mode
or, via OFF signal from
website.
Dry contacts
are isolated.
C1 C2
Contact
Closure
Input
Supply
Air
Sensor
A1A2A
3
Remote
Room
Temperture
(& Humidity)
Sensor
Non-twisted Pair #18 AWG Wire
500 feet (maximum)
(not supplied)
Remote Room
Temperature
(& Humidity)
Sensor
Supply Air Sensor
Mount the Supply Air Sensor on the discharge air duct
with the probe in the discharge air stream making sure
the inner duct liner is penetrated, if present, so the
probe is in the air stream.The probe must be positioned
horizontally or downward. Do not place on the bottom of the duct with the probe sticking up. Do not use
probe as a tool to puncture ductwork.
10
Connect the 2-conductor cable to the two terminals
marked Supply Air Sensor. These are located on the
bottom terminal block as seen in gure below.
Discharge
From RTU
To
Supply Air
Diffuser
Acceptable
Supply Air
Sensor
Locations
Unacceptable
Supply Air
Sensor
Location
Wir e Nuts
(supplied)
(REMOTE) SUPPLY AIR SENSOR
WIRING DIAGRAM
RELAYS: G, W1, Y1, W2, Y2, O, B,
A1, A2, and A3 rated 24 V ac, 60 Hz,
Class 2, 1A, resistive / pilot duty.
A1-A2-A3 Relay: Normal
position indicated.
Contacts reverse during
Unoccupied (night) mode
or, via OFF signal from
website.
Dry contacts
are isolated.
C1 C2
Contact
Closure
Input
Supply
Air
Sensor
A1A2A
3
Remote
Room
Temperture
(& Humidity)
Sensor
Non-twisted Pair #18 AWG Wire
500 feet (maximum)
(not supplied)
Supply
Air
Sensor
11
When using the e-Stat
™
on a heat pump, move this
switch to the ON position. This will increase the
interstage differential between W1 and W2 from 1.5°F
to 3°F in the heating mode to allow the HVAC to
operate the compressor longer before turning on the
backup heat.
Moving this switch to ON also tells the
e-Stat
™
to use
a different intelligent recovery warm up from the
unoccupied to the occupied mode, to minimize the use
of backup heat.
The recovery period is a maximum of 128 minutes.
The
e-Stat
™
will automatically determine the amount of
time required to bring the space up to the
desired temperature setpoint.
During this recovery period, the
e-Stat
™
will display the
“ramp” symbol in the digital display and the
temperature setpoints will ramp automatically.
Setting the Heat Pump Switch (#1)
ON
1 2 3
This th ermostat recei ves pr ogramming via
E thernet cable connection .
S ome li mited te mperature adjustment MAY
or MAY NOT be allow ed via the UP and
DOW N butt ons .
TECH SU PPOR T 800 -292-2444
P leasant Valley , C T
OFF ON
1
2
3
1
2
3
-Move to ON fo r gas heat . F an con trol led
by limit switch .
-L eave O FF for fan contr olled by Light stat
in heat c ycle (typ ical f or elect ric heat ).
-Mov e to ON fo r no c ompres sor time delay s .
-L eave O FF for 3 minut e compress or m inimum r un
a nd minim um o
time delays .
-Move to ON to incre ase the Heatin g (W1 -W2) di e rential
to 3 d egrees f or m ore e
cien t H eat Pump o peration .
-L eave O FF for ( W1-W 2) di
erent ial of 1. 5 deg rees ,
typ ically used wi th Ele ctri c or Gas h eat .
WRAP 00003 R EV . ?
S WITCH SE TTINGS
ON
1 2 3
.
OFF ON
1
2
3
-L eave O FF for f an c ontrolle d by Lig htstat
in he at cyc le (typic al for electri c heat ).
WRAP00003 REV. ?
1 2 3
ON
OFF ON
1
2
3
12
When this switch is set to OFF, the minimum On and
Off time for any stage of Heating or Cooling will be 3
minutes.
When set to ON, no delays are used when heating or
cooling stages change state.
In either position, the Fan will continue to run for 45
seconds after the Heating or Cooling stops;
unless the Fan switch is set to ON in which case the
fan runs continuously.
During night setback the Fan will revert to the Auto
Mode.
Setting the Compressor Time Delay Switch (#2)
ON
1 2 3
This th ermostat recei ves pr ogramming via
E thernet cable connection .
S ome li mited te mperature adjustment MAY
or MAY NOT be allow ed via the UP and
DOW N butt ons .
TECH SU PPOR T 800 -292-2444
P leasant Valley , C T
OFF ON
1
2
3
1
2
3
-Move to ON fo r gas heat . F an con trol led
by limit switch .
-L eave O FF for fan contr olled by Light stat
in heat c ycle (typ ical f or elect ric heat ).
-Mov e to ON fo r no c ompres sor time delay s .
-L eave O FF for 3 minut e compress or m inimum r un
a nd minim um o
time delays .
-Move to ON to incre ase the Heatin g (W1 -W2) di e rential
to 3 d egrees f or m ore e
cien t H eat Pump o peration .
-L eave O FF for ( W1-W 2) di
erent ial of 1. 5 deg rees ,
typ ically used wi th Ele ctri c or Gas h eat .
WRAP 00003 R EV . ?
S WITCH SE TTINGS
ON
1 2 3
.
OFF ON
1
2
3
-L eave O FF for f an c ontrolle d by Lig htstat
in he at cyc le (typic al for electri c heat ).
WRAP00003 REV. ?
1 2 3
ON
OFF ON
1
2
3
13
Setting the Heat Fan switch to Gas/Electric (#3)
This is often called the “Gas/Electric” switch.
Consult the HVAC equipment manufacturers’
instructions for details on how to set this switch.
When controlling fossil fueled equipment with a fan
limit control, you may want to set this switch to the ON
position.
Note: The e-Stat
™
will not bring on the fan in this
setting during the heat cycle.
Leave this switch set to OFF for all other
equipment, such as electric heat or heat pumps.
ON
1 2 3
This th ermostat recei ves pr ogramming via
E thernet cable connection .
S ome li mited te mperature adjustment MAY
or MAY NOT be allow ed via the UP and
DOW N butt ons .
TECH SU PPOR T 800 -292-2444
P leasant Valley , C T
OFF ON
1
2
3
1
2
3
-Move to ON fo r gas heat . F an con trol led
by limit switch .
-L eave O FF for fan contr olled by Light stat
in heat c ycle (typ ical f or elect ric heat ).
-Mov e to ON fo r no c ompres sor time delay s .
-L eave O FF for 3 minut e compress or m inimum r un
a nd minim um o
time delays .
-Move to ON to incre ase the Heatin g (W1 -W2) di e rential
to 3 d egrees f or m ore e
cien t H eat Pump o peration .
-L eave O FF for ( W1-W 2) di
erent ial of 1. 5 deg rees ,
typ ically used wi th Ele ctri c or Gas h eat .
WRAP 00003 R EV . ?
S WITCH SE TTINGS
ON
1 2 3
.
OFF ON
1
2
3
-L eave O FF for f an c ontrolle d by Lig htstat
in he at cyc le (typic al for electri c heat ).
WRAP00003 REV. ?
1 2 3
ON
OFF ON
1
2
3
Use #18 gauge cable between the e-Stat
™
and the
damper or equipment to be controlled. Cables do not
need to be shielded.
The A1-A2-A3 terminals are an isolated set of dry
contacts rated 1 Amp at 24 VAC.
Connect the cable to the appropriate terminals marked
A1-A2-A3. Connect the other end to the damper or
equipment to be controlled as needed.
The default operation for A1-A2 is open during “oc-
cupied” period and closed during “unoccupied” period.
A2-A3 is closed during “Occupied” period and open
d u r i n g “ u n oc cu pi e d ” p e r i o d .
Note: Alternatively, these contacts can be controlled
remotely via the Internet. See Appendix A.
14
A1-A2-A3 DRY CONTACT CLOSURE
WIRING DIAGRAM
RELAYS: G, W1, Y1, W2, Y2, O, B,
A1, A2, and A3 rated 24 V ac, 60 Hz,
Class 2, 1A, resistive / pilot duty.
A1-A2-A3 Relay: Normal
position indicated.
Contacts reverse during
Unoccupied (night) mode
or, via OFF signal from
website.
Dry contacts
are isolated.
C1 C2
Contact
Closure
Input
Supply
Air
Sensor
A1A2A
3
Remote
Room
Temperture
(& Humidity)
Sensor
Non-twisted Pair #18 AWG Wire
500 feet (maximum)
(not suppl ied)
May be used for
night shutdown of
dampers or other
equipment
A1-A2 = Normally
Open (N.O)
Contacts
A2-A3= Normally
Closed (N.C)
Contacts
1 Amp
(Max) @
24VAC
Powering up the e-Stat
™
First you must turn on the breaker or switch that feeds
power to your HVAC equipment.
Next, press the blue System On/Off button to turn on
the
e-Stat
™
.
The power-up sequence will give you information about
your
e-Stat
™
.
IMPORTANT: The
e-Stat
™
must be programmed
remotely. The thermostat will run the HVAC system on
default temperatures. After power up, this thermostat
must be activated in order for the customer to change
the programming. (see page 16 for activation
instructions).
You must connect the Cat 6 RJ45 jack in
order for the e-Stat
™
to communicate on the
network and be programmed.
15
ETHERNET CABLE (NETWORK)
WIRING DIAGRAM
Use supplied
Ethernet cable
If substituting Ethernet
cable length must not
exceed 328 feet
Connect to RJ -45 jack
positioned near eStat or to
a network hub, switch, or
router.
Networking equipment to
be supplied by others.
Temp
ONFANAUTO
HEATSET
COOLSE T
OVERRIDE
NEW PROGRAM
SYSTEM OFF
REL
HUMIDITY
ERROR
REMOTE TEMP
MONTUEWEDTHUFRISATSUN
ON
ON
ON
ON
ON
ON
A
P
Cool 1
Cool 2
Fan
O
Heat 1
Heat 2
System
On/Off
Check
Fan
On/Auto
Read
Sensor
Yellow -
Website
program
active
Red -
Utility Program
active
Press to cancel
Time delays
On – Constant Fan
Auto – Fan only with
Heat / Cool cycle
Press to read
Supply Air Sensor
& Humidity (Optional)
Web controlled thermostat.
Buttons may be disabled.
Tech Support 800-292-2444
Turns entire system off
System
On/Off
Press to read
Supply Air Sensor
& Humidity (Optional)
Turns entire system off
F
Thermostat Activation
The e-Stat
™
thermostat must be activated after
installation. Activation only takes a few
minutes.
Information you will need before calling to activate your
e-Stat
™
:
1. Location Name, such as restaurant
or store name.
2. Store Number.
3. Thermostat TUID number (yellow label
afxed on the inside wrap of the
thermostat).
During the activation, Lightstat Support will be able to
bring on the heating and/or cooling for you to verify
proper equipment operation.
Depending on the model
e-Stat
™
you have,
the temperature buttons may or may not work. If the
temperature up/down buttons function, do not use
these to test the HVAC operation prior to activation.
This will put the
e-Stat
™
in override mode. If the word
“override” is in the display, you must turn the power off
and then back on in order to clear the override.
PLEASE CALL TO ACTIVATE THE
THERMOSTAT
1-800-292-2444
YOUR CUSTOMER CANNOT COMMUNICATE
WITH THE THERMOSTAT UNLESS IT HAS
BEEN ACTIVATED.
16
Green Button Functions
Check - Cancels all time delays (primarily used for
troubleshooting purposes).
Fan On/Auto - Some model thermostats may not have
a selectable fan function. If selectable, choose be-
tween “ON” (Constant Fan) or “AUTO” (Fan only with
heat or cool cycle) during OCCUPIED period.
Read Sensor - Press the “Read Sensor” button once
to see when the last program was received. This will
also display the supply air sensor temperature. Press
a second time to see the relative humidity (if an RTH
sensor is in use).
17
Check
Fan
On/Auto
Read
Sensor
Press to cancel
Time delays
On – Constant Fan
Auto – Fan only with
Heat / Cool cycle
Press to read
Supply Air Sensor
& Humidity (Optional)
Use the UP and DOWN temperature buttons to change
the heating and cooling setpoints. To conserve energy
and make sure that the heating and cooling units do
not ght each other, the heating and cooling setpoints
typically cannot be set closer than 5°F. Other “ONOFF
differentials” may be used. 3, 4 or 6°F can be selected
via the web interface.
The range of local temperature adjustment may be
restricted to owner specications.
On some models the temperature buttons may not
function.
If the temperature buttons function and they are used,
the word “OVERRIDE” will appear in the display. The
override period is determined by the communications
interface. When the override period expires, the
e-Stat
™
will revert back to its program.
Note: Not all
e-Stat™s
allow button adjustment of
temperature settings during the OCCUPIED period.
During the UNOCCUPIED program period pressing
either up or down buttons will adjust the setpoints to
the settings dened for the previously occupied state.
The previously occupied state setpoints will remain
in effect for 2 hours (time frame is adjustable) before
reverting back to the setpoints dened in the current
program. If previously occupied state data is
unavailable for the current day, default temperature
settings are used.
18
Setting Temperature
Output Status
Your e-Stat
™
will show the status of the HVAC system
outputs. It will indicate when the Fan, Heating or Cooling should be running.
A solid arrow “◄” and the word “ON” in the display
indicates the output is on.
A ashing arrow “◄” and the word “ON” in the display
indicates the output has recently turned on and is being
held on by a time delay.
A ashing arrow “◄” by itself in the display indicates
the output has recently turned off and is being held off
by a time delay.
Note: Use the CHECK button to cancel equipment
time delays for faster checkout.
You can use the output indicators to help
troubleshoot your HVAC system. If the Cool 1 and
Cool 2 output indicators are displayed, you should feel
cool air coming from the HVAC system. This tells you
the HVAC system is working properly. Press “Read
Sensor” to see supply air temperature.
19
ON
ON
ON
ON
ON
ON
Cool 1
Cool 2
Fan
O
Heat 1
Heat 2
Check
Press to cancel
Time delays
Indicator Lights
The e-Stat
™
contains (4) indicating lights:
Yellow Green Blue Red
Solid Yellow Time and setpoint program
are in effect.
Flashing Yellow Program setpoints have been
overriden at thermostat.
Flashing Green No valid program or time;
Default setpoints overriden at
thermostat.
Solid Green Operating on default
setpoints.
Flashing Blue Combined with Green or Yellow:
connected to a network device.
Flashing Red Information being sent or
received over Internet.
All colors ash Duplicate IP address on
network. Call tech support for
assistance.
20
Temp
ONFANAUTO
HEATSET
COOLS ET
OVERRIDE
NEW PROGRAM
SYSTEM OFF
REL
HUMIDITY
ERROR
REMOTE TEMP
MONTUEWEDTHUFRISATSUN
ON
ON
ON
ON
ON
ON
A
P
Cool 1
Cool 2
Fan
O
Heat 1
Heat 2
System
On/Off
Check
Fan
On/Auto
Read
Sensor
Yellow -
Website
program
active
Red -
Utility Program
active
Press to cancel
Time delays
On – Constant Fan
Auto – Fan only with
Heat / Cool cycle
Press to read
Supply Air Sensor
& Humidity (Optional)
Web controlled thermostat.
Buttons may be disabled.
Tech Support 800-292-2444
Turns entire system off
ï
Symptom
No Operation of
Heating or Cooling.
1. e-Stat
™
Power
Off.
2. No Power to
equipment or
eStat
™
3. e-Stat
™
at limit
temperature
1. Press system On/Off
button
2. Check switches,
circuit breakers, fuses,
gas valve and pilot.
3. Check display to
verify the e-stat temperature is above the heat
setpoint and below the
cool setpoint.
Display does not
come on during
power up.
1.No Power to the
e-Stat
™
1. Verify 24 VAC is
present at terminal
block by measuring
from R to C. If no
voltage present, check
breakers and fuses.
Fan blows cold
air in heating
season.
1. Fan ON/AUTO
is in wrong position.
2. Heat Fan DIP
switch in wrong
position.
3.O/B terminals
miswired for heat
pump.
1. Move Fan to Auto
position by pressing
FAN ON/AUTO button.
2. See setting the Heat
Fan switch on Page 13.
3. See the O/B direc-
tions on Page 5.
Basic Troubleshooting
Questions...Call Tech Support at 800-292-2444
Possible Cause
Solution
Heating or
Cooling will not
come on.
1. O/B terminals
miswired for heat
pump.
2. Time delay
holding the Cool
or Heat OFF.
1. See the O/B direc-
tions on Page 5.
2. Press the check
button to cancel time
delays.
21
Symptom
Possible Cause Solution
Display shows
“REMOTE
TEMP” and “--”
for the
temperature.
1. There is a
wiring issue.
1. Check remote
sensor and wiring.
The eStat
®
powers up
correctly, but
the display
goes blank.
1. Transformer is
too small for the
installation.
1. The eStat™
needs a minimum
of 20 VAC to
operate. You may
have to install a
larger transformer
to provide adequate power to
keep the voltage
at 24 VAC.
2. The e-Stat
™
resets when
outputs come on.
2. Remove all output wires except
“R” & “C”. Then
reconnect the
wires one by one.
Check eld wiring
connections and
equipment for
short or overload.
Basic Troubleshooting Continued
Questions...Call Tech Support at 800-292-2444
2. Humidity
sensor saturated
or defective.
2. If problem
persists, contact
Lightstat support.
22
Symptom
Display shows
“00” for the
Supply Air
Temperature
1. There is no
Supply Air Sensor
connected or there
is a broken wire.
1. Check Supply
Air Sensor wiring.
Display shows
“99” for the
Supply Air
Temperature
1.The Supply Air
Sensor wires are
shorted.
1. Check Supply
Air Sensor wiring.
Display shows
”REMOTE
TEMP” and “--”
for the temperature AND the display shows low
temperature “55”
for the Supply
Air Temperature
1. The Remote
Temperature Sensor and Supply Air
Sensor wires are
swapped .
1. Check the wiring.
Basic Troubleshooting
Questions...Call Tech Support at 800-292-2444
Possible Cause
Solution
23
Appendix A
Using the A1-A2-A3 relay to remotely control
an auxiliary load.
The “A” Relay can be programmed via the internet to
remotely switch a load such as lighting.
Wire the load such that the A relay is in the “normal”
position. This will keep the load ON when the e-Stat™
A relay is powered off. The web program logic will assume it is wired this way.
To ensure the stat is wired correctly, the state of the
relay can be toggled using the following steps:
Press and hold the “READ SENSOR” then “DOWN”
button uninterrupted for 10 seconds. Press the up or
down button until you reach screen #7, which is indi-
cated by the ashing number. Press the check button
to momentarily change the state of the relay. When
nished testing, press “READ SENSOR” to exit this
mode.
WARNING! FOR CONNECTION TO CLASS 2
CIRCUIT ONLY. DO NOT EXCEED 1 AMP (MAX)
@ 24VAC.
24
A1-A2-A3 DRY CONTACT CLOSURE
WIRING DIAGRAM
RELAYS: G, W1, Y1, W2, Y2, O, B,
A1, A2, and A3 rated 24 V ac, 60 Hz,
Class 2, 1A, resistive / pilot duty.
A1-A2-A3 Relay: Normal
position indicated.
Contacts reverse during
Unoccupied (night) mode
or, via OFF signal from
website.
Dry contacts
are isolated.
C1 C2
Contact
Closure
Input
Supply
Air
Sensor
A1A2A
3
Remote
Room
Temperture
(& Humidity)
Sensor
Non-twisted Pair #18 AWG Wire
500 feet (maximum)
(not suppl ied)
May be used for
night shutdown of
dampers or other
equipment
A1-A2 = Normally
Open (N.O)
Contacts
A2-A3= Normally
Closed (N.C)
Contacts
1 Amp
(Max) @
24VAC
Appendix B
Connecting the RTH or DTHS sensor allows the
e-Stat™ to read and display relative humidity (%) as
well as temperature.
The yellow or blue LED, depending on your model will
turn on for 3 minutes when the e-Stat™ is turned on.
This helps identify which sensor goes with which
e-Stat™
.
The #18-2 conductor wires which attach the sensor do
not require shielding and are not polarized.
Press the “READ SENSOR” Button twice to read % RH
from the sensor.
Using the Temperature Sensor with (optional)
Humidity.
Yellow LED
“Temperature + Humidity”
Digital Temperature
& Humidity Sensor
25
Blue LED
(inside)
Remote Temperature
& Humidity Sensor
Using the (optional) Humidity Temperature
Adjustment
Occupant comfort is determined by both temperature
and humidity. There are times of the year (especially
Spring and Fall) when temperatures may be at the
proper setting, but high humidity can cause
discomfort.
The
e-Stat
™
can automatically lower the programmed
cooling setting by 2°F when a pre-selected Relative
Humidity (RH) setting is exceeded.
It lowers the cooling setpoint only when the
e-Stat
™
is
satised at the programmed cooling setpoint.
You can choose a relative humidity “trigger point”
remotely via the web based interface. (from 45% RH
to 70% RH) Let’s choose 55% RH. In this example
let’s assume that the e-Stat™ has been remotely programmed for a 74° F cooling setting.
If the
e-Stat
™
is holding the temperature in the space
at 74° F and the RH is below 55%, then the cooling
would turn off normally. However, if the space tem-
perature is at 74°F and the RH goes above 55%,
then the “Cool Set” would automatically drop to 72°F.
The words “REL HUMIDITY” will appear (ashing) in
the display for as long as the cooling is operating in
this high humidity mode.
Two conditions will stop the extra cooling. First, if the
room temperature drops below 72°F, or second, if
the relative humidity drops 5% below the “RH trigger
point”. In this example, the humidity would have to
drop to 50% R.H. in order for the cooling setpoint to
revert back to 74°F.
26
Appendix B continued
27
The e-Stat™ can be used to monitor a Contact Closure
such as a switch.
Use #18 gauge 2-conductor twisted pair cable between
the e-Stat™ and the switch or other open/closed contact type device. Contact Closure is unaffected by wire
runs of up to 500 feet.
Contact closure terminals do not have polarity, either
wire may be connected to either terminal. Shielded
cable is not required.
Connect the 2-conductor cable to the two terminals
marked C1 C2 Contact Closure Input. These are
located at the far left of the bottom terminal block as
seen in the gure below.
Contact Closure Connection
CONTACT CLOSURE
WIRING DIAGRAM
RELAYS: G, W1, Y1, W2, Y2, O, B,
A1, A2, and A3 rated 24 V ac, 60 Hz,
Class 2, 1A, resistive / pilot duty.
A1-A2-A3 Relay: Normal
position indicated.
Contacts reverse during
Unoccupied (night) mode
or, via OFF signal from
website.
Dry contacts
are isolated.
C1 C2
Contact
Closure
Input
Supply
Air
Sensor
A1A2A
3
Remote
Room
Temperture
(& Humidity)
Sensor
Non-twisted Pair #18 AWG Wire
500 feet (maximum)
(not suppl ied)
Contact Closure
terminal input to
monitor switch
closure.
1 Amp
(Max) @
24VAC
28
This device complies with Part 15 of the FCC
rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful
interference and (2) this device must accept any
interference received, including interference that
may cause undesired operation.
29
Notes
30
Notes
Lightstat Limited Lifetime Warranty
Lightstat Inc. warrants that all Hardware Products (Products) sold by it after October 1, 2015 are free
of defects in material and workmanship, under normal use and service for as long as the Products are
installed in their original installation for the original End User and operator of the Products with the following limitations:
1. In the event of Product discontinuance, warranty support is limited to ve (5) years from the
announcement of discontinuance.
2. The duration of the warranty period for Products not designed or manufactured by Lightstat
(e.g. power supplies, Ethernet cables, motion sensors, etc) and mechanical assemblies that are
subject to normal wear and tear (e.g. timers, electrical contractors, relays) shall be two (2) years
from the time of purchase.
3. This warranty does not apply to any Product which was not operated in accordance with the
printed instructions, has been damaged by accident or acts of God or which has been misused,
abused or neglected or has been damaged by other cause. This warranty also does not apply
to any Product, which was maintained, altered or repaired by anyone other than Lightstat or its
authorized representatives.
4. This warranty is conditioned upon (a) proper storage, installation, use and maintenance and
conformance with any applicable recommendations of Lightstat and (b) Customer promptly notifying Lightstat of any defects and, if required, promptly making the Product available for correction.
All claims for nonconforming or defective Products must be made within the warranty period. Any claim
not made within that period shall be deemed waived and released. Lightstat’s sole responsibility with
respect to such claims shall be, at its option, to repair or replace any Product or component that it determines to be defective. Replaced Products may be refurbished or new equipment at the option of Light-
stat. Such Product must be removed by the installer and returned to the factory within the applicable
warranty period with transportation charges, if any, prepaid, after rst obtaining proper authorization and
shipping instructions by contacting Lightstat. Any repaired or replacement Product shall be warranted
for the remaining period of the original Warranty Period. Repair or replacement as provided under this
warranty shall be the exclusive remedy of the Customer.
In no event, shall Lightstat be responsible for any monetary damage or be liable for any incidental or
consequential damages due to any cause whatsoever, including, without limitation, commercial loss or
damage resulting from an alleged defect in the Product.
Lightstat does not authorize any other person or organization to assume for it any liability in connection with this Product and any statements or representations made by any other person or organization
are void.
EXCEPT FOR THOSE WARRANTIES EXPRESSLY SET FORTH IN THIS AGREEMENT, LIGHTSTAT INC. DISCLAIMS ANY AND ALL OTHER WARRANTIES, EXPRESS IMPLIED, STATUTORY,
OR OTHERWISE INCLUDING, BUT NOT LIMITED TO, ALL WARRANTIES OF FITNESS FOR A
PARTICULAR PURPOSE OR MERCHANTABILITY. LIGHTSTAT INC. MAKES NO ADDITIONAL EXPRESS OR IMPLIED WARRANTIES EXCEPT TO THE EXTENT, IF ANY, THEY ARE SPECIFICALLY
REQUIRED BY LAW.
Some states do not allow the exclusion or limitation of implied warranties or consequential damages, so
the above limitations or exclusions may not apply to the purchase of this Product. This warranty gives
each original purchaser specic legal rights, and such purchaser may have other rights that vary from
state to state.
Lightstat Inc. ٠ 22 W. West Hill Road ٠ Barkhamsted, CT 06063 ٠ USA ٠ 800.292.2444
sales@lightstat.com ٠ www.lightstat.com ٠ © 2016 Lightstat Inc. All Rights Reserved. Made in USA.
WARRANTY 10115v1.1
I-12 Rev 51818 Rev. B.
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