Engineered Comfort Fan Coil Controller EZstat User manual

EC-EZstat
Date: 9-2014 Supersedes: NEW
Engineered Comfort reserves the right to change any information concerning product or specification without notice or obligation.
Page 1 of 36
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Fan Coil Controller – EZstat

Installation and Operation Manual ●Fan Coil Controller – EZstat
EC-EZstat
Date: 9-2014 Supersedes: NEW
Engineered Comfort reserves the right to change any information concerning product or specification without notice or obligation.
Page 2 of 36
CONTENTS
1 PREFACE ....................................................................................................................................3
2 SAFETY SYMBOLS & CONSIDERATIONS....................................................................................3
3 INTRODUCTION ........................................................................................................................3
3.1 FEATURES................................................................................................................................. 3
3.2 USER FUNCTIONS.................................................................................................................... 3
3.3 SPECIFICATIONS ...................................................................................................................... 4
3.4 EZSTAT FEATURES.................................................................................................................... 6
4 INSTALLATION...........................................................................................................................7
4.1 MOUNTING THE EZSTAT ......................................................................................................... 7
4.2 CONNECTING INPUTS............................................................................................................. 8
4.3 CONNECTING OUTPUTS ......................................................................................................... 9
4.4 CONNECTING POWER........................................................................................................... 11
4.5 MAINTENANCE...................................................................................................................... 11
5 USER FUNCTIONS ...................................................................................................................12
5.1 OPERATING THE EZSTAT ....................................................................................................... 12
5.2 ENTERING USER OR ADMIN PASSWORD............................................................................. 13
5.3 CHANGING THE ACTIVE SETPOINTS.................................................................................... 13
5.4 SETTING THE OPERATING MODES....................................................................................... 14
6 COMMISSIONING FUNCTIONS...............................................................................................15
6.1 CREATING AND/OR CHANGING PASSWORDS..................................................................... 16
6.2 SETTING THE COMMISSIONING SETPOINTS ......................................................................17
6.3 SET UP THE COMMUNICATIONS.......................................................................................... 18
6.4 SET THE TIME AND DATE...................................................................................................... 19
6.5 SETTING THE OCCUPANCY SCHEDULE ................................................................................ 20
6.6 ENTER THE COMMISSIONING MODE.................................................................................. 21
6.7 ADVANCED OPTIONS ............................................................................................................ 25
7 SEQUENCES OF OPERATION ...................................................................................................27
7.1 SETPOINT LIMITS .................................................................................................................. 27
7.2 OCCUPANCY........................................................................................................................... 27
7.3 AUTOMATIC COOLING AND HEATING CHANGEOVER........................................................28
7.4 SCHEDULING OCCUPANCY ................................................................................................... 28
7.5 DISPLAY BLANKING AND BACKLIGHT .................................................................................. 28
7.6 TEMPERATURE SENSING INPUTS......................................................................................... 28
7.7 PID CONTROL LOOPS ............................................................................................................ 28
7.8 VALVE OPERATION FOR FAN COILS...................................................................................... 28
7.9 FAN OPERATION FOR FAN COILS ......................................................................................... 29
7.10 ONE, TWO, AND THREE SPEED FANS................................................................................... 29
8 SYSTEM INTEGRATION ...........................................................................................................30
8.1 BACNET OBJECTS .................................................................................................................. 30
8.2 CONNECTING TO MS/TP NETWORK .................................................................................... 34

Installation and Operation Manual ●Fan Coil Controller – EZstat
EC-EZstat
Date: 9-2014 Supersedes: NEW
Engineered Comfort reserves the right to change any information concerning product or specification without notice or obligation.
Page 3 of 36
1 PREFACE
Your equipment is inially protected under the manufacturer’s standard warranty. However, this warranty is provided under the
condion that the steps outlined in this manual are followed for inial inspecon, proper installaon, periodic maintenance and
everyday operaon of the equipment.
This manual should be fully reviewed in advance of any actual work being done on the equipment. Should any quesons
arise, please contact your local Sales Representave or the factory before proceeding.
Consult the approved unit submial, order acknowledgment, and other manuals for details on the applicaons and accessories
provided with the equipment on each project.
Always follow proper procedures related to safety, handling, installaon, operaon, servicing of mechanical equipment as the
manufacturer assumes no responsibility for personal injury or property damage resulng from improper or unsafe pracces
during handling, service or operaon of any equipment.
2 SAFETY SYMBOLS & CONSIDERATIONS
The equipment covered by this manual is designed for safe and reliable operaon within its design specicaon limits. To avoid
personal injury or damage to equipment or property while installing or operang this equipment, it is essenal that qualied,
experienced personnel perform these funcons using good judgment and safe pracces. To promote safety, the following
symbols are used in this document to alert the reader to potenal hazards:
3 INTRODUCTION
The EZstat combines the power of a space‑mounted equipment controller with the convenience of built‑in temperature sensors.
The EZstat controller includes a wide range of factory supplied programs for two and four pipe fan coil units.
3.1 Features
• No special programming, soware applicaon, or setup tools are required to congure and commission an
EZstat
• Bright, full‑color display is easy to read across a room even in bright sunlight
• Display ‑ Large numbers and simple color icons to indicate heang or cooling, local setback modes, and fan operaon
• Five funcon keys, operator can change set‑points and fan, heang, cooling modes, choose between Fahrenheit or
Celsius values, Set BACnet addressing, Set up and commission the installaon, and add or change user passwords
• Ready to connect to a BACnet MS/TP network. Device instance, MAC address, and baud rate are set from the
password protected front controls; feature a hardware clock and BACnet schedule that can be set up from the front
panel or as standard BACnet objects and properes
• White nish
 3.2 UserFuncons
EZstat user funcons are limited to changing the following funcons:
• Acve temperature set‑points
• Fan operaon
• Changing between heang and cooling
• Override scheduled occupancy or occupancy based on the schedule in the EZstat
• Change the display between Fahrenheit and Celsius
NOTE
NOTE is used to highlight addional informaon
which may be helpful to you.
DANGER indicates an imminently hazardous
situaon which, if not avoided, will result in
death or serious injury.
CAUTION idenes a hazard which could lead
to damage to the machine, damage to other
equipment and/or environmental polluon.
Usually an instrucon will be given, together
with a brief explanaon.
WARNING indicates a potenally hazardous
situaon which, if not avoided, could result in
death or serious injury.
TIP
TIP indicates me saving shortcuts and
programming ps.

Installation and Operation Manual ●Fan Coil Controller – EZstat
EC-EZstat
Date: 9-2014 Supersedes: NEW
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Page 4 of 36
 3.3 Specicaons
EZstat specicaons are subject to change without noce.
User Interface
The user interface is a color display and with ve push buons. Through the menu driven display, an operator can do the
following:
• Add or change user passwords
• Change setpoints
• Set BACnet addressing
• Set up and commission the installaon
• Congure any available opons
Security
Separate passwords for users and controls technicians.
Display type
• 128 ×128 pixels
• Acve color LCD with LED back lighng
• 0.98 x 1.04 inches (25 x 26 mm)
Inputs and outputs
All inputs and outputs are preprogrammed and applicaon specic. Review wiring label for proper connecons.
Analog inputs
Analog inputs represent BACnet analog input objects and are congured for discharge air temperature, remote
temperature sensor and water temperature sensor. Not all input sensors are applicable or required for all applicaons.
• Sensors are automacally detected
• Inputs accept industry‑standard 10,000 Ω, Type II (Nailor Part# H1‑1989) or Type III (Nailor Part# H1‑0246 and H1‑1764B)
thermistors sensors.
• Input overvoltage protecon up to 24 VAC, connuous. 12‑bit analog‑to‑digital conversion
Analog outputs
Analog outputs are congured to represent BACnet analog objects. The outputs control modulang valves, and variable
speed fans, or other equipment that requires a proporonal input signal.
• Short‑circuit protected
• Loads up to 10 mA at 0–12 VDC
• 8‑bit PWM digital‑to‑analog conversion
Relay outputs
Relay outputs are congured to represent BACnet binary objects. The outputs control On/O valves, speeds for three‑
speed fans, fan start circuits, or electric heat.
• All relay outputs are normally open, SPST, Form “A” relays
• 1 ampere maximum per relay at 24 VAC or VDC for each output. Maximum for all relay outputs is 3 amperes (72VA).
Connectors
• Screw terminal block mounted to back plate
• Wire size 14‑22 AWG
  Communicaons—BACnetMS/TP
• Integral peer‑to‑peer BACnet MS/TP network communicaons. Network speeds from 9600 to 76,800 baud.
• Front panel congurable device instance, MAC address, and baud. Automac baud detecon, see the topic Set up the
communicaon. Screw terminal block mounted to back‑plate. Wire size 14–22 AWG
• Meets or exceeds ANSI/ASHRAE BACnet Standard 135‑2008 for Applicaon Specic Controllers

Installation and Operation Manual ●Fan Coil Controller – EZstat
EC-EZstat
Date: 9-2014 Supersedes: NEW
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Accuracy
Regulatory
• UL 916 Energy Management Equipment
• FCC Class A, Part 15, Subpart B and complies with Canadian ICES‑003 Class B
• BACnet Tesng Laboratory listed as an applicaon specic controller (lisng applied for)
• SASO PCP Registraon KSA R‑103263
This device complies with part 15 of the FCC Rules. Operaon is subject to the following two condions: (1) This device
may not cause harmful interference, and (2) this device must accept any interference received, including interference that
may cause undesired operaon.
Environmental limits
  Installaon
Type ±0.36° F (±0.2° C)
Accuracy ±0.36° F (±0.2° C)
Resistance 10,000 Ω at 77° F (25° C)
Operang Range 48 to 96° F (8.8 to 35.5° C)
Operang 32 to 120° F (0 to 49° C)
Shipping –40 to 140° F (–40 to 60° C)
Humidity 0–95% relave humidity (non‑condensing
Supply Voltage 24 VAC (–15%, +20%), 50‑60 Hz, 12 VA, Class 2 only, non‑supervised. All circuits, including
supply voltage, are power limited circuits.
Weight Approximately 6 ounces (170 grams)
Case Material Flame retardant plasc
Dimensions 11/8”(29)
51/8”
(130)
31/2”(89)

Installation and Operation Manual ●Fan Coil Controller – EZstat
EC-EZstat
Date: 9-2014 Supersedes: NEW
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3.4 EZstat Features
Power and Outputs
Inputs and
Network
Up and Down
Buons
SoKey
Buons
SoKey
Bar

Installation and Operation Manual ●Fan Coil Controller – EZstat
EC-EZstat
Date: 9-2014 Supersedes: NEW
Engineered Comfort reserves the right to change any information concerning product or specification without notice or obligation.
Page 7 of 36
4 INSTALLATION
This secon provides important instrucons and guidelines for installing the EZstat. Carefully review this informaon before
installing the controllers.
Installing the sensors includes the following topics that are covered in this secon:
• Mounng the EZstat
• Connecng inputs
• Connecng outputs
• Connecng power
• Maintenance
 4.1 MounngtheEZstat
For the most accurate performance, install the EZstat on an inside wall where it can sense the average room temperature.
Avoid locaons with direct sunlight, heat sources, windows, air vents, and air circulaon or obstrucons such as curtains,
furniture, etc.
The EZstat must not be:
• Mounted on an exterior wall.
• Mounted on or near an object with a large thermal mass such as a concrete block wall.
• Blocked from normal air circulaon by obstrucons.
• Exposed to heat sources such as lights, computers, copiers, or coee makers, or to direct sunlight at any me of the
day.
• Exposed to dras from windows, diusers, or returns.
• Exposed to air ow through connecng conduits or empty spaces behind walls.
  Rough-inpreparaon
Complete rough‑in wiring at each locaon before mounng an EZstat. This includes the following steps
• Install the supplied mounng base directly to a wall, a vercal electrical box, or a box with a wall plate kit.
• Roung the connecng cable or cables from the EZstat to the equipment it is controlling.
• If required, install an appropriate wall plate kit.
• Block leaks and airow from conduits with plumber’s puy or similar material.
• If replacing an exisng thermostat, label exisng wires for reference when removing the exisng thermostat.
Installing the EZstat
To install the controller on a mounng base, do the following:
1. Turn the Allen screw in the base of the sensor clockwise unl it clears the case.
2. Swing the EZstat away from the mounng base to remove it.
3. Route wiring for the EZstat through the mounng base.
4. Posion the base with the embossed UP toward the ceiling and fasten it directly to a vercal 2 x 4 inch electrical box.
5. Connect the wires for the EZstat to the terminals in the mounng base.
6. Place the top of the sensor over the top of the mounng base and swing it down over the Allen screw bracket. Be
careful not to pinch any wiring.
Turn Clockwise to
remove from base

Installation and Operation Manual ●Fan Coil Controller – EZstat
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Date: 9-2014 Supersedes: NEW
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Turn Counterclockwise unl
the screw engages the base.
 4.2 ConnecngInputs
The inputs for the EZstat are congured for specic funcons and do not require set up in the eld. Not all inputs are
required for every model or applicaon.
  Remotespacetemperaturesensor(oponal)
Connect a 10kΩ, Type II thermistor temperature sensor (Nailor part #H1‑1989) to the remote space temperature (RS)
input and ground (GND) terminals. The input includes the internal pull‑up resistor. Follow the instrucons supplied with
the sensor for installaon.
When a remote space temperature input is connected to the EZstat, the remote temperature is used instead of the
internal temperature sensor.
Fig. 4-1 Wiring for remote space temperature sensor
To prevent mounng screw heads from toughing the circuit board in the controller, use only the mounng
screws supplied. Using screws other than the type supplied may damage the EZstat unit.
RS
GRD
7. Turn the Allen screw counterclockwise unl it backs out of the mounng base and engages the case.
Discharge air temperature
Connect a 10kΩ, Type III thermistor temperature (Nailor part #H1‑0246) probe to the discharge air temperature (DAT)
input. The input includes the internal pull‑up resistor.
Fig. 4-2 Wiring for Discharge Air Temperature Sensor
GND
DAT

Installation and Operation Manual ●Fan Coil Controller – EZstat
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Date: 9-2014 Supersedes: NEW
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Water temperature sensor
Connect a 10kΩ, Type III thermistor temperature probe (Nailor part #H1‑1764B) to the water temperature (WST) input.
The input includes the internal pull‑up resistor. Follow the instrucons supplied with the sensor for installaon.
 4.3 ConnecngOutputs
The EZstat outputs are congured for specic applicaons.
• Depending on the conguraon, the EZstat outputs are designed for either 24 VAC or 0‑10 VDC loads.
• The outputs may represent analog or digital signals.
Fig. 4-3 Wiring for a water temperature sensor
Improperly connecng loads or equipment to output terminals may damage the equipment.
Connect only as shown in the following diagrams or applicaon drawings.
WST
GND
  Connecngtoathree-speedfan
The following diagram shows the connecons for a three‑speed fan. The fan circuits must be a 24 VAC pilot duty only.
• For a single‑speed fan, use only the FAN‑L connecon.
• For a three‑speed, use FAN‑L, FAN‑M, and FAN‑H
Fig. 4-4
Conneconstoa
three-speed fan
COM
FAN-L
FAN-H
FAN-M
R

Installation and Operation Manual ●Fan Coil Controller – EZstat
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Date: 9-2014 Supersedes: NEW
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  Connecngtoamodulangfan
The following diagram shows the connecons for a modulang speed fan.
• The fan start circuit must be a 24 VAC circuit. Connect it to the FAN‑ L output.
• The speed control is a 0‑10 VDC analog output.
Fig. 4-5
Conneconsfora
modulangfan
COM
FAN-L
R
A08
  Connecngtomodulangvalves
The following diagram shows the connecons for a modulang mixing valves. The valve control signal is a 0‑10 V analog
output.
Fig.4-6Conneconsto
 modulangheang&
cooling valves
COM
A06
A07

Installation and Operation Manual ●Fan Coil Controller – EZstat
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Date: 9-2014 Supersedes: NEW
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  ConnecngtoOn/Ovalves
The following diagram shows the connecons for an on/o valve.
• The valves are actuated by 24 VAC
• The outputs are 24 V relays.
Fig.4-7Connecng
 on/ovalve
COM
R
B05
 4.4 ConnecngPower
The EZstat requires an external, 24 VAC power source. Use the following guidelines when choosing and wiring
transformers.
• Use only a Class‑2 transformer of the appropriate size to supply power.
• Connect the transformer’s neutral lead to the COM terminal.
• Connect the AC phase lead to the 24VAC terminal.
• Power is applied to the controller when the transformer is powered.
Fig. 4-8 Wiring for EZstat power
COM
24VAC
4.5 Maintenance
Remove dust as necessary from the holes in the top and boom. Clean the display with so, damp cloth and mild soap.

Installation and Operation Manual ●Fan Coil Controller – EZstat
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Date: 9-2014 Supersedes: NEW
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Page 12 of 36
5 USER FUNCTIONS
This secon covers topics for the end user in a facility.
EZstat user funcons are limited to changing the following funcons:
• Acve temperature setpoints
• Fan operaon
• Changing between heang and cooling
• Override scheduled occupancy or occupancy based on the schedule in the EZstat.
• Change the display between Fahrenheit and Celsius
 5.1 OperangtheEZstat
EZstat funcons are accessible through a user interface consisng of simple, context sensive menus. The menus are
opened and opons are selected by using the buons and a color display on the front of the EZstat. See Secon 3.4 for
EZstat features.
• Pressing either the or buon changes a selecon, seng, or value.
• Pressing the Enter buon saves the selected seng or value. Typically the Enter buon is the middle of the three
buons below the display.
• Saving a selecon also advances to the next display.
The three buons below the display are dened by labels in the so key bar. Typically the buons are designated for the
following funcons:
Back Returns to the previous menu.
Cncl Cancels current changes.
Done Push this buon at any point while entering a value. For example, if you have entered the rst two digits of
a password and the remaining two digits are correct, pushing Done completes the entry of the password.
Enter Pushing this buon enters the selecon and advances to the next step.
Exit Returns to temperature display
Icon Descripon Mode
The fan icon rotates when the system fan is operaonal. In systems with mulspeed fans the
icon rotaon is the same regardless of speed. When fan operaon is set to automac, the
word “ON” is placed under the fan icon.
Fan
Occupied—Occupancy is set to occupied by the schedule maintained in the controller. Occupancy
Unoccupied—Occupancy is set to unoccupied by the schedule maintained in the controller. Occupancy
Standby—The space is temporarily unoccupied because of lack of detected moon in the
room. Occupancy
Override—A user has entered temperature setpoints that override the unoccupied setpoints. Occupancy
Cooling—The system will cool the space unl the cooling setpoint is reach. The icon is in
moon when cooling is taking place. Heang/Cooling
Heang—The system will heat the space unl the heang setpoint is reached. The icon is in
moon when heang is taking place. Heang/Cooling
O System is o Heang/Cooling
The operang modes of the EZstat are represented by the display icons.
Table5–1Operangmodeicons

Installation and Operation Manual ●Fan Coil Controller – EZstat
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Procedure Steps Display
Starng
Display Start at the temperature display.
F
°
70
AUTO AUTO
Enter
the User
Password
1. Press either the or buon for the rst digit of Password 1.
2. Press the Enter buon to select the next digit. Repeat for all
remaining digits. The Enter buon is the middle of the three buons
below the display.
If the password is correct, the display will advance to the rst menu.
Enter
SECURITY
USER LEVEL
00 0 0
Enter the
Admin
Password
1. Press the le and right buons below the display at the same me
and hold them unl the display changes to the SECURITY ADMIN
LEVEL Display
If Password 2 has not previously been entered, the display will change to the
MAIN menu.
2. Press either the or buon for the rst digit of Password 2.
3. Press the Enter buon to select the next digit. Repeat for all
remaining digits.
Enter
SECURITY
ADMIN LEVEL
00 0 0
NOTE
 5.2 EnteringUserorAdminPassword(Password1&2,respecvely)
User funcons may require a password consisng of four numbers. Once either the User or Admin level password is
entered, the funcons will remain unlocked for 60‑seconds aer the last buon is pushed.
To set up the password levels, go to Create and/or change Passwords.
Security User Level – Calls up Password 1 in the program
Security Admin Level – Calls up Password 2 in the program.
NOTE
Allow 60 seconds me elapse for
passwordchange/setuptoenable.
TIP
Procedure Steps Display
Starng
Display Start at the temperature display.
F
°
70
AUTO AUTO
Enter the
Password
1. Press either the or buon to change the acve temperature setpoint.
2. Press the buon to save the value. The display will advance to the
next setpoint.
3. Press either the or buon to change the setpoint.
4. Press the Enter buon to save the value. The display will return to the
temperature display
F
°
68
HEATING SETPT
Done
Enter
Cncl
F
°
72
COOLING SETPT
Done
Enter
Cncl
 5.3 Changingtheacvesetpoints
To enter or change the acve temperature setpoints you may need to enter the User password.
To change the operaon of the fan, occupancy, or heang/cooling, see the topic Seng the operang modes.
In the following procedure the current acve setpoint–either cooling or heang–is the rst setpoint to
change. Once that setpoint is entered, the display advances to the next setpoint.
NOTE

Installation and Operation Manual ●Fan Coil Controller – EZstat
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Procedure Steps Display
Starng
Display Start at the temperature display.
F
°
70
AUTO AUTO
Change the
heang
or cooling
mode.
1. Push the buon under the heang/cooling icon.
2. Press either the or buon to select the heang/cooling
mode. The mode may be one of the following.
• Heat—The system will only heat the space.
• Cool—The system will only cool the space.
• Auto—The system will switch between heang and cooling.
• O—The system is turned o.
3. Press the Enter buon to save the seng. The display returns to the
temperature display.
Enter
Cncl
MODE: HEAT
COOL
AUTO
OFF
Heang/Cooling
Icons
Set the fan
mode.
1. Press the Enter buon to select the next digit. Repeat for all four digits.
2. Press either the or buon to select the fan mode from the
following opons.
• Auto (Default) — Auto funcon is ulized to match EPIC (ECM)
motor with this feature for opmum energy savings.
AUTO FAN RESET for ECM applicaons only, by enabling the AUTO
FAN RESET located in SYSTEM menu. To adjust default me of 60
mins, select LOCAL OVRD TIME. The AUTO FAN RESET and LOCAL
OVRD TIME work together.
The AUTO FAN RESET funcon protects from user accidentally
changing out of FAN ‑ AUTO mode on interface. Aer me
expires, the control will reset back to Auto Mode, while
ensuring the eciency benets of the variable speed motor.
The word ON will be placed under the fan icon.
• Low, Med, High—Sets the speed at which 3‑speed or modulang
fans will run connuously.
3. Press the Enter buon to save the seng. The display returns to the
temperature display.
Fan Icon
Enter
AUTO FAN RESET
ENABLE
DISABLE
Enter
Cncl
FAN: HIGH
MED
LOW
AUTO
Mul‑speed
fan opon
 5.4 Sengtheoperangmodes
The operang modes set the following funcons:
• Fan operaon
• Changing between heang and cooling
• Override scheduled occupancy or occupancy that has been set by a schedule.
• Change the display units from Fahrenheit to Celsius.

Installation and Operation Manual ●Fan Coil Controller – EZstat
EC-EZstat
Date: 9-2014 Supersedes: NEW
Engineered Comfort reserves the right to change any information concerning product or specification without notice or obligation.
Page 15 of 36
Procedure Steps Display
Change the
override
setpoint
Entering an override setpoint can only take place if the EZstat is in the
unoccupied mode.
1. Push the buon under the unoccupied icon .
2. Press either the or buon to change the rst digit of the
password.
3. Press the Enter buon to select the next digit. Repeat for all four
digits.
4. Press either the or buon to turn the override on or o.
• Override O—The controller uses the unoccupied setpoint as the acve
setpoint.
• Override On—the controller changes to the occupied setpoint
which can then be temporarily changed.
5. Press the Enter buon to save the seng.
When the system is in the unoccupied mode, changing the acve setpoint will
automacally place the system in the override mode.
F
°
65
AUTO AUTO
Enter
Cncl
LOCAL OVRD: ON
OFF
Change the
display units
To temporarily change the display units to either Celsius or Fahrenheit,
press and hold the middle buon under the display unl the units change.
F
°
70
AUTO AUTO
°
21
C
.0
AUTO AUTO
NOTE
6 COMMISSIONING FUNCTIONS
The topics in this secon are advanced topics for control technicians and engineers. These topics cover procedures for the inial
EZstat setup.
The EZstat commissioning funcons are values and sengs that are entered during the installaon and commissioning of a
controller and the equipment it is controlling. Typically these funcons do not change aer the installaon and commissioning
process.
To set up the commissioning funcons, you will need the following informaon:
• Informaon about the equipment
• The sequence of operaon for the equipment
• The building automaon system plans for controllers that are part of a network.
Users may change the occupied heang and cooling setpoints without accessing the commissioning funcons. This procedure
is covered in the topic User funcons.

Installation and Operation Manual ●Fan Coil Controller – EZstat
EC-EZstat
Date: 9-2014 Supersedes: NEW
Engineered Comfort reserves the right to change any information concerning product or specification without notice or obligation.
Page 16 of 36
 6.1 Createand/orChangePasswords
For access to the commissioning funcons you will need to know the Admin Level Password, also known as Password 2.
If the controller has not been previously set up, no password is required and the user can either connue on to setup the
User & Admin Level passwords (see table below) or proceed directly to the secon of interest.
  PasswordFuncons:
• User Level – Calls up Password 1 in the program. This is for a facility user and limits changes to acve setpoints, fan
operaon, occupancy, and heang and cooling modes.
• Admin Level – Calls up Password 2 in the program. This is generally used by a controls technician to set up and
commission the EZstat. When set, will lock user out from setpoints, fan operaon, occupancy, and heang and
cooling modes.
Procedure Steps Display
Starng
Display Start at the temperature display.
F
°
70
AUTO AUTO
Creang
Password 1
1. Press the le and right buons below the display at the same me and
hold them unl the display changes to the SECURITY ADMIN LEVEL display
2. If Password 2 has not previously been entered, the display
will change to the MAIN menu. Otherwise, enter the password.
3. Under the MAIN menu, select ADVANCED followed by PASSWORDS.
4. Select the password you wish to congure and proceed to the next
screen.
5. Press either the or buon to program the rst digit of
Password 1 and/or Password 2.
6. Press the Enter buon to select the next digit.
7. Repeat steps 5 & 6 for all remaining digits.
Enter
SECURITY
ADMIN LEVEL
00 0 0
Enter
MAIN
SETPOINT
SCHEDULE
SYSTEM
COMM
ADVANCED
Enter
PASSWORD1:
0 0 0 0

Installation and Operation Manual ●Fan Coil Controller – EZstat
EC-EZstat
Date: 9-2014 Supersedes: NEW
Engineered Comfort reserves the right to change any information concerning product or specification without notice or obligation.
Page 17 of 36
Procedure Steps Display
Select a
commissioning
funcon
Access to the commissioning funcons always starts at the MAIN menu display.
Procedure Steps Display
Starng Display
1. Start at the temperature display.
2. Enter Password 2. The display changes to the MAIN menu display.
F
°
70
AUTO AUTO
Choose and set
the setpoints
1. From the MAIN menu, press either the or buon to select
SETPOINTS.
2. Press the Enter . The SETPOINTS menu opens.
3. Choose and set each of the following setpoints.
• OCC COOL—The cooling setpoint that is used as the acve
setpoint when the system is occupied.
• OCC HEAT—The heang setpoint that is used as the acve setpoint
when the system is occupied.
• UNOCC COOL—The cooling setpoint that is used as the acve
setpoint when the system is un‑occupied.
• UNOCC HEAT—The heang setpoint that is used as the acve
setpoint when the system is unoccupied.
• MIN COOLING—The minimum cooling setpoint that a user can
select as the acve setpoint.
• MAX HEATING—The maximum heang setpoint that a user can
select as the acve setpoint.
• DIFFERENTIAL—The minimum value between the cooling or
heang setpoints. The EZstat will always maintain this dierence
between set points.
• STBY OFFSET—A value used to calculate the standby setpoint.
The standby setpoint is calculated by adding or subtracng
the oset value to or from the value of the occupied setpoint.
(Applicable to BACnet systems only).
• COOL DAT LIMIT* – A value used to control the discharge cooling
temperature.
• HEAT DAT LIMIT* – A value used to control the discharge heang
temperature.
* Nailor Exclusive: The DAT is monitored by the control and will modulate
the valve according to the demand versus DAT setpoint
Back
Enter
Cncl
SETPOINT
OCC COOL
OCC HEAT
UNOCC COOL
UNOCC HEAT
MIN COOLING
MAX HEATING
DIFFERENTIAL
Back
Enter
Cncl
SETPOINT
OCC COOL
OCC HEAT
UNOCC COOL
UNOCC HEAT
MIN COOLING
MAX HEATING
DIFFERENTIAL
 6.2 Sengthecommissioningsetpoints
The commissioning setpoints set the operaonal setpoints and limits for the EZstat. Seng commissioning setpoints
requires entering Password 2 which is described in the topic Enter the Commissioning mode.
Not all setpoints in the following procedure are applicable to all models of EZstat.
NOTE
NOTE

Installation and Operation Manual ●Fan Coil Controller – EZstat
EC-EZstat
Date: 9-2014 Supersedes: NEW
Engineered Comfort reserves the right to change any information concerning product or specification without notice or obligation.
Page 18 of 36
 6.3 Setupthecommunicaons
Seng BACnet communicaons properes is required only if the EZstat is integrated into a network with other BACnet
controllers. Entering the communicaons properes requires entering Password 2.
See the topic Connecng to MS/TP network for network wiring details.
Procedure Steps Display
Starng Display
1. Start at the temperature display.
2. Enter Password 2. The display changes to the MAIN menu display.
F
°
70
AUTO AUTO
Enter
SECURITY
ADMIN LEVEL
00 0 0
Change the
network
communicaon
properes.
1. From the MAIN menu, press either the or buon to select COMM.
2. Press Enter. The COMM menu opens.
3. Choose and set the following properes:
• DEVICE ID—This is the BACnet device instance. The device instance
must be within the range of 1 to 4,194,302.
• MAC—The MAC address must be in the range of 1‑127.
• BAUD—Set to match other devices on the BACnet MS/TP network.
The choices are Auto, 9600, 19,200, 38,400, or 76,800.
Note: Aer changing a communicaon property, the EZstat will reset.












Back
Enter
DEVICE ID:
0000000


 





NOTE

Installation and Operation Manual ●Fan Coil Controller – EZstat
EC-EZstat
Date: 9-2014 Supersedes: NEW
Engineered Comfort reserves the right to change any information concerning product or specification without notice or obligation.
Page 19 of 36
Procedure Steps Display
Starng Display
1. Start at the temperature display.
2. Enter Password 2. The display changes to the MAIN menu display.
F
°
70
AUTO AUTO
Enter
SECURITY
ADMIN LEVEL
00 0 0
Select the
SCHEDULE
menu.
1. From the MAIN menu, press either the or buon to
select SCHEDULE.
2. Press Enter . The SCHEDULE menu opens.
3. Choose SET CLOCK and then press Enter . The SET Clock menu
opens.







Choose a clock
funcon to set.
Choose one of the features in the SET CLOCK menu to change the
date, me, or Daylight Saving Time (DST) seng.
• DATE—The current calendar date.
• TIME—Time is set according to a 12‑hour clock.
• UTC OFFSET—Enter the me oset, in minutes, between local
standard me and Universal Time Coordinated. The value of the
property ranges from ‑780 to +780 seconds. The me zones to
the west of the zero degree meridian are posive values; those
to the east are negave values. The value of the UTC Oset
property is subtracted from the UTC received in a UTC Time
Synchronizaon service request to calculate the correct local
standard me.
• DST ENABLE—Set to TRUE to enable Daylight
• Saving Time and FALSE to use standard me year around.
• DST AUTO—When set to TRUE, the EZstat automacally
calculates the start and end dates from relave dates. For
example, set DST START to the rst Sunday in March instead of a
calendar date.
• DST START and DST END—Enter the dates and me to begin
observing DST. If DST AUTO is set to TRUE the dates are relave;
if set to FALSE the date is a calendar date.









 6.4 Setthemeanddate
Seng the me and date requires entering Password 2.
If the EZstat is connected to a BACnet network that includes a me service master, the me and date are automacally
set to the network me and date.
 Setthemeanddate
NOTE

Installation and Operation Manual ●Fan Coil Controller – EZstat
EC-EZstat
Date: 9-2014 Supersedes: NEW
Engineered Comfort reserves the right to change any information concerning product or specification without notice or obligation.
Page 20 of 36
Procedure Steps Display
Starng Display
1. Start at the temperature display.
2. Enter Password 2. The display changes to the MAIN menu display.
F
°
70
AUTO AUTO
Enter
SECURITY
ADMIN LEVEL
00 0 0
Select the
SCHEDULE
menu.
1. From the MAIN menu, press either the or buon to
select SCHEDULE.
2. Press Enter . The SCHEDULE menu opens.







Choose and
set a weekly
schedule.
1. From the SCHEDULE menu, choose one of the following schedule
entry methods to enter a weekly schedule.
• ENTIRE WEEK—Sets the schedule for all seven days of the week
at one me.
• WEEKDAYS—Sets the schedule for Monday to Friday. Saturday
and Sunday are not changed
• WEEKEND—Sets the schedule for Saturday and Sunday. Monday
to Friday remain unchanged.
• INDIVIDUAL DAYS—Sets the schedule for just the selected day of
the week.
2. Change the daily mes and values in the schedule to set the
occupancy mode to either ON or OFF.
• When nished with each pair push Enter or Done .
• When nished with the schedule push Exit to return to the
SCHEDULE menu











  
 
 
 
 

 6.5 Sengtheoccupancyschedule
The schedule in the EZstat controls the occupancy mode. If the schedule is set to ON, the EZstat uses the occupied
setpoint as the acve setpoint. If the schedule is OFF, the unoccupied setpoint is used.
The schedule in the EZstat is a BACnet schedule object. If the EZstat is connected to a BACnet network the schedule
can be set up with a BACnet operator workstaon.
Seng the occupancy schedule requires entering Password 2.
NOTE