Lightstat e-stat Owner's manual

2-Way Communicating Thermostat
Hardware Installation and Operation Manual
.....INSTALLERS....
CONTACT LIGHTSTAT FOR ACTIVATION
1-800-292-2444
Intended for connection to
Class 2 Circuit(s) Only (24 VAC)
Common Wire is Required
Manufactured by:
Lightstat Inc.
Barkhamsted, CT
www.lightstat.com
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 supplyductwork
2-conductor
#18 low voltage
cable
2-conductor
#18 low voltage
cable
Existing
8-conductor
#18 low voltage
cable
Cat 5
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 5 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 configurable 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.
•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........................Cat5 (UTP) with RJ45 connector
Ethernet....................................10/100BT Auto-Sensing
Wiring Cable Distance (Max).................................328 ft

Inside View - Door (Left)
Inside View - Base (right)
3
ON
123
This thermostat receives programming via
Ethernet cable connection .
Some limited temperature adjustment MAY
or MAY NOT be allowed via the UP and
DOWN buttons.
TECH SUPPORT 800 -292 -2444
Pleasant Valley , CT
OFF ON
1
2
3
1
2
3
-Move to ON for gas heat. Fan controlled
by limit switch.
-Leave OFF for fan controlled by Lightstat
in heat cycle(typical for electric heat).
-Move to ON for no compressor time delays.
-Leave OFF for 3 minute compressor minimum run
and minimum off time delays.
-Move to ON to increase the Heating(W1-W2) differential
to 3 degrees for more efficientHeat Pump operation.
-Leave OFF for (W1-W2) differential of1.5 degrees,
typically used with Electric or Gas heat.
WRAP00003 REV.?
SWITCH SETTINGS
Not
Used
R G W 1Y 1
C
O
M
M
O
NW 2Y 2
O (On with Cool)
B (On with Heat )
A
1A 2A 3
S upply
Air
S ensor
Rem ote
Room
Tem perature
(& Hum idity )
S ensor 1 Amp
(Max) @
24VAC
A1-A2-A3 Relay: Normal
position indicated.
Contacts reverse during
Unoccupied(night) mode
or, via OFF signal from
website.
Dry contacts
are isolated.
FOR
CON NE C TION
TO CLAS S 2
CIRCUIT (S)
ONLY.
(24 V AC)
Remote sensor cables do NOT have polarity. Cables do NOT need shielding.
Use Copper Conductors Only
CAUTION!
Risk of E lectric S hock –
More than one
disconnect
switch m ay
be provided .
Disconnect
all power
to device
before
servicing .
NOTE : Heat pumps m ay
require jum per between
Y 1 and W 1 t o bring on
com pressor in both
Heating and C ooling .
WRAP00003
REV. ?

4
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 making 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
CONTACT
TERMINALS
ON e-Stat®
REVERSING
VALVE (w/COOL)
REVERSING
VALVE (w/HEAT)
FAN
HEAT1
COOL2
COOL1
HEAT2
20-30 VAC ONLY
(COMMON)
(COMMON)
NOTE: HEAT
PUMPS MAY
REQUIRE
JUMPER
BETWEEN Y1
AND W1 TO
BRING ON
COMPRESSOR
IN BOTH
HEATING AND
COOLING.

5
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: Jump W1 and Y1 for heat pumps that have a single
compressor wire to bring the compressor on for both heating
and cooling.
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.
Connecting the Outputs

6
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
H E A T S E T
C O O L S E T
O VE RRIDE
NEW P ROGRAM
S Y S T E M O F F
REL
HUMI DI TY ERRO R
R EMO TE TEMPMONT UE WE DT HUF R IS AT SU N
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
Y ellow -
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

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 flash 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
CO OLSET
AUTO FAN ON
ON
ON
ON
ON
ON
ON MONTUEWEDTHUFRISATSUN
HE ATSET
SY STE M OFF
OVERRIDE
NEW PROGRAM
ERROR
REMOTE TEMP
REL
HUMIDITY
P
A
Cool 1
Cool 2
Fan
O
Heat 1
Heat 2
H
P
M
CB
JK
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®
Both Remote Temperature and Supply Air sensors
MUST BE installed for the e-Stat to function properly.
All wiring should be a minimum of #18AWG. Shielding
is not required.
Wiring Layout
8
TYPICAL
ROOFTOP
UNIT
SUPPLY AIR DUCT
SUPPLY AIR SENSOR
MOUNT ON DISCHARGE AIR DUCT WITH
PROBE IN DISCHARGE AIR STREAM
REMOTE TEMPERATURE AND
HUMIDITY SENSOR
MOUNT IN SPACE TO BE CONTROLLED
10 WIRE #18AWG
2 WIRE #18AWG
2 WIRE #18AWG
Cat-5/5e
NETWORK
CABLE

Remote Sensor Installation
The e-Stat must have both a remote temperature sensor
and a supply air sensor installed. These sensors are
supplied for each thermostat.
Note: See Appendix B for remote temp and
humidity sensor.
Use #18 gauge 2-conductor thermostat 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 figure below.
Note that this sensor is not designed to be placed into a
moving air stream.
9
Non-twisted Pair #18 AWG Wire
500 feet (maximum)
(not supplied)
Wire Nuts
(supplied)
REMOTE ROOM SENSOR
WIRING DIAGRAM
Remote
Room
Temperature
(& Humidity)
Sensor
A
1A 2A 3
1 Amp
(Max) @
24VAC
A1-A2-A3 Relay: Normal
position indicated.
Contacts reverse during
Unoccupied(night) mode
Or, via OFF signal from
website.
Dry contacts
are isolated.
Rem ote
Room
Tem perature
(& Hum idity )
S ensor
Not
Used
S upply
Air
S ensor

Supply Air Sensor
Mount the Supply Air Sensor on the discharge air duct
with the probe in the discharge 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 figure below.
Discharge
From RTU
To
Supply Air
Diffuser
Acceptable
Supply Air
Sensor
Locations
Unacceptable
Supply Air
Sensor
Location
Supply
Air
Sensor
Non-twisted Pair #18 AWG Wire
500 feet (maximum)
(not supplied)
Wire Nuts
(supplied)
(REMOTE) SUPPLY AIR SENSOR
WIRING DIAGRAM
A
1A 2A 3
1 Amp
(Max) @
24VAC
A1-A2-A3 Relay: Normal
position indicated.
Contacts reverse during
Unoccupied(night) mode
Or, via OFF signal from
website.
Dry contacts
are isolated.
Rem ote
Room
Tem perature
(& Hum idity )
S ensor
Not
Used
S upply
Air
S ensor

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 thermostat receives programming via
Ethernet cable connection .
Some limited temperature adjustment MAY
or MAY NOT be allowed via the UP and
DOWN buttons.
TECH SUPPORT 800 -292 -2444
Pleasant Valley , CT
OFF ON
1
2
3
1
2
3
-Move to ON for gas heat. Fan controlled
by limit switch.
-Leave OFF for fan controlled by Lightstat
in heat cycle(typical for electric heat).
-Move to ON for no compressor time delays.
-Leave OFF for 3 minute compressor minimum run
and minimum off time delays.
-Move to ON to increase the Heating(W1-W2) differential
to 3 degrees for more efficientHeat Pump operation.
-Leave OFF for (W1-W2) differential of1.5 degrees,
typically used with Electric or Gas heat.
WRAP00003 REV.?
SWITCH SETTINGS
12 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, the minimum On and Off time for any
stage of Cooling will be 15 seconds.
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
123
This thermostat receives programming via
Ethernet cable connection .
Some limited temperature adjustment MAY
or MAY NOT be allowed via the UP and
DOWN buttons.
TECH SUPPORT 800 -292 -2444
Pleasant Valley , CT
OFF ON
1
2
3
1
2
3
-Move to ON for gas heat. Fan controlled
by limit switch.
-Leave OFF for fan controlled by Lightstat
in heat cycle(typical for electric heat).
-Move to ON for no compressor time delays.
-Leave OFF for 3 minute compressor minimum run
and minimum off time delays.
-Move to ON to increase the Heating(W1-W2) differential
to 3 degrees for more efficientHeat Pump operation.
-Leave OFF for (W1-W2) differential of1.5 degrees,
typically used with Electric or Gas heat.
WRAP00003 REV.?
SWITCH SETTINGS
123
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
123
This thermostat receives programming via
Ethernet cable connection .
Some limited temperature adjustment MAY
or MAY NOT be allowed via the UP and
DOWN buttons.
TECH SUPPORT 800 -292 -2444
Pleasant Valley , CT
OFF ON
1
2
3
1
2
3
-Move to ON for gas heat. Fan controlled
by limit switch.
-Leave OFF for fan controlled by Lightstat
in heat cycle(typical for electric heat).
-Move to ON for no compressor time delays.
-Leave OFF for 3 minute compressor minimum run
and minimum off time delays.
-Move to ON to increase the Heating(W1-W2) differential
to 3 degrees for more efficientHeat Pump operation.
-Leave OFF for (W1-W2) differential of1.5 degrees,
typically used with Electric or Gas heat.
WRAP00003 REV.?
SWITCH SETTINGS
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
during “unoccupied” period.
Note: Alternatively, these contacts can be controlled
remotely via the Internet. See Appendix A.
14
Non-twisted Pair #18 AWG Wire
500 feet (maximum)
(not supplied)
A1-A2-A3 DRY CONTACT CLOSURE
WIRING DIAGRAM
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
A
1A 2A 3
1 Amp
(Max) @
24VAC
A1-A2-A3 Relay: Normal
position indicated.
Contacts reverse during
Unoccupied(night) mode
Or, via OFF signal from
website.
Dry contacts
are isolated.
Remote
Room
Tem perature
(& H umidity )
S ensor
Not
Used
S upply
Air
S ensor

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 16for activation
instructions).
You must connect the Cat 5 RJ45 jack in
order for the e-Stat to communicate on the
network and be programmed.
15
ETHERNET CABLE(NETWORK)
WIRING DIAGRAM
Connect to RJ-45
jack positioned
near e-Stat or to
a network hub,
switch, or router.
Networking
equipment to be
supplied by others.
Not
Used
Use supplied
Ethernet cable.
If substituting
Ethernet cable,
length must not
exceed 328 feet.
CAUTION!
Risk of E lectric S hock -
More than one
disconnect
switch m ay
be provided .
Disconnect
all power
to device
before
servicing .
Temp
ONFANAUTO
H E A T S E T
C O O L S E T
O VE RRIDE
NEW P ROGRAM
S Y S T E M O F F
REL
HUM I DI TY ER RO R
R EM O TE TEM P
MONTUE WE DT HUF R ISAT S UN
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
Y ellow -
Website
program
active
Re d -
Utility P rogram
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 Support800-292-2444
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
affixed 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 duct 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 fight each other, the heating and cooling setpoints
typically cannot be set closer than 5 °F. Other “ON-
OFF differentials” may be used. 3, 4 or 6 °F can be
selected via the communications interface.
The range of local temperature adjustment may be
restricted to owner specifications.
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-Stats 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 defi
ned 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 defined 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 Cool-
ing should be running.
When you see “◄” ON in the display, the e-Stat®is
turning that output on.
A flashing arrow “◄” by itself means the output is being
held OFF for a minimum time period.
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