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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 

function

Access to the commissioning functions always starts at the MAIN menu display.

Procedure

Steps

Display

Starting 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 

 button 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  active 

setpoint when the system is occupied.

• 

OCC HEAT—The heating setpoint that is used as the active setpoint 

when the system is occupied.

• 

UNOCC  COOL—The  cooling  setpoint  that  is  used  as  the  active 

setpoint when the system is un‑occupied.

• 

UNOCC  HEAT—The  heating  setpoint  that  is  used  as  the  active 

setpoint when the system is unoccupied.

• 

MIN  COOLING—The  minimum  cooling  setpoint  that  a  user  can 

select as the active setpoint.

• 

MAX  HEATING—The  maximum  heating  setpoint  that  a  user  can 

select as the active setpoint.

• 

DIFFERENTIAL—The  minimum  value  between  the  cooling  or 

heating setpoints. The EZstat will always maintain this difference 

between set points. 

• 

STBY  OFFSET—A  value  used  to  calculate  the  standby  setpoint. 

The  standby  setpoint  is  calculated  by  adding  or  subtracting 

the offset 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 heating 

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  Setting the commissioning setpoints

The  commissioning  setpoints  set  the  operational  setpoints  and  limits  for  the  EZstat.  Setting  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

Содержание Fan Coil Controller EZstat

Страница 1: ...2014 Supersedes NEW Engineered Comfort reserves the right to change any information concerning product or specification without notice or obligation Page 1 of 36 www Engineered Comfort com Fan Coil C...

Страница 2: ...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...

Страница 3: ...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...

Страница 4: ...omatically detected Inputsacceptindustry standard10 000 TypeII NailorPart H1 1989 orTypeIII NailorPart H1 0246andH1 1764B thermistors sensors Input overvoltage protection up to 24 VAC continuous 12 bi...

Страница 5: ...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...

Страница 6: ...ate 9 2014 Supersedes NEW Engineered Comfort reserves the right to change any information concerning product or specification without notice or obligation Page 6 of 36 3 4EZstatFeatures Power and Outp...

Страница 7: ...he day Exposed to drafts from windows diffusers or returns Exposed to air flow through connecting conduits or empty spaces behind walls Rough in preparation Complete rough in wiring at each location b...

Страница 8: ...ls The input includes the internal pull up resistor Follow the instructions supplied with the sensor for installation When a remote space temperature input is connected to the EZstat the remote temper...

Страница 9: ...outputs are configured for specific applications Depending on the configuration the EZstat outputs are designed for either 24 VAC or 0 10 VDC loads The outputs may represent analog or digital signals...

Страница 10: ...following diagram shows the connections for a modulating 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...

Страница 11: ...g 4 7 Connecting on off valve COM R B05 4 4 Connecting Power The EZstat requires an external 24 VAC power source Use the following guidelines when choosing and wiring transformers Use only a Class 2 t...

Страница 12: ...wing functions Back Returns to the previous menu Cncl Cancels current changes Done Push this button at any point while entering a value For example if you have entered the first two digits of a passwo...

Страница 13: ...2 respectively User functions may require a password consisting of four numbers Once either the User or Admin level password is entered the functions will remain unlocked for 60 seconds after the las...

Страница 14: ...the fan mode from the following options Auto Default Auto function is utilized to match EPIC ECM motor with this feature for optimum energy savings AUTO FAN RESET for ECM applications only by enabling...

Страница 15: ...automatically 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 a...

Страница 16: ...lls 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 operation occupancy and heating and...

Страница 17: ...mum cooling setpoint that a user can select as the active setpoint MAX HEATING The maximum heating setpoint that a user can select as the active setpoint DIFFERENTIAL The minimum value between the coo...

Страница 18: ...rocedure Steps Display Starting 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 0 0 0 0 Change the...

Страница 19: ...s between local standard time and Universal Time Coordinated The value of the property ranges from 780 to 780 seconds The time zones to the west of the zero degree meridian are positive values those t...

Страница 20: ...of the week at one time 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 INDIVIDU...

Страница 21: ...e will override the values of the weekly schedule DATE RANGE Enter a range of dates on which the values and times listed in the holiday schedule will override the values of the weekly schedule WEEK N...

Страница 22: ...tpoint as the active setpoint Set the fan delay From the SYSTEM menu choose FAN DELAY OFF to set the time the system fan will continue to run after the last heat ing or cooling stage is turned off Set...

Страница 23: ...8 337 1 92 526 4 33 705 6 74 873 9 15 343 1 99 531 4 40 710 6 81 878 9 22 349 2 06 536 4 47 715 6 88 883 9 29 355 2 13 542 4 54 720 6 95 888 9 36 361 2 20 547 4 61 725 7 02 893 9 43 367 2 27 552 4 68...

Страница 24: ...two pipe only From the SYSTEM menu choose Stage 1 fan Select the fan for Stage 1 Enter STAGE 1 FAN 50 Set Stage 2 Fan two pipe only From the SYSTEM menu choose Stage 2 fan Select the fan for Stage 2...

Страница 25: ...ABLED Procedure Steps Display Starting 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 0 0 0 0 Choo...

Страница 26: ...oves the password The EZstat is supplied without passwords 1 From the PASSWORD1 or PASSWORD2 menu either the or button to change the first digit of the password 2 Press the Enter button to select the...

Страница 27: ...etpoint Limits The programming in the EZstat will limit the setpoint entry so that no heating setpoint is set higher than its corresponding cooling setpoint If a user is adjusting a setpoint and it fa...

Страница 28: ...ng applications The EZstat is configured for a Type III thermistor sensor or Nailor Part H1 1764B to monitor water temperature The water temperature can be monitored as an analog input and is also sto...

Страница 29: ...n be added to two pipe systems Typically this heat is a duct or baseboard resistance heater controlled by a relay When the supply water type is chilled water and there is a call for heat the EZstat co...

Страница 30: ...er with LOCAL OVRD Time To adjust default time of 60 mins select LOCAL OVRD TIME The control will reset back to Auto Mode while ensuring the efficiency benefits of EON variable speed motor 8 SYSTEM IN...

Страница 31: ...Fan Speed Control 0 100 0 10 V B01 LOW Fan Low Speed Unknown B02 MEDIUM Fan Medium Speed Unknown B03 HIGH Fan High Speed Unknown B04 BINARY_COOLING Cooling Valve Unknown B05 BINARY_HEATING Heating Val...

Страница 32: ...for the EZstat applications All of the setpoints are available from the user interface Value object Name Description AV3 ACT_COOL_STPT Active Cooling Setpoint AV4 ACT_HEAT_STPT Active Heating Setpoin...

Страница 33: ...6 DAT_ENABLE DAT Enable BV7 DAT_SENSOR DAT Sensor Present BV9 FAN_NEED Call for Fan BV10 COOL_HEAT_NEED Cooling or Heating needed BV11 SPEED_UP Speed up Timers x15 BV13 OCCUPIED_FAN Fan On During Occu...

Страница 34: ...no more than 128 addressable BACnet devices to one MS TP network The devices can be any mix of EZstat controllers other BACnet controllers or BACnet routers To prevent network traffic bottlenecks lim...

Страница 35: ...or specification without notice or obligation Page 35 of 36 The controllers or devices on the physical ends of the MS TP wiring segment must have end of line EOL termination installed for proper netwo...

Страница 36: ...oil 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 36 of 3...

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