EngA CRD-200 C-TRAC3 Manuale utente

Sep 06

INSTALLATION AND OPERATION

MANUAL

FOR

CRD-200

C-TRAC3 REMOTE DISPLAY

UNIT MODEL NO. _________________

UNIT SERIAL NO. _________________

SERVICED BY: ___________________

TEL. NO: ________________________

CANADIAN

HEAD OFFICE

AND FACTORY

USA

HEAD OFFICE

AND FACTORY

CANADIAN

EASTERN FACTORY

1401 HASTINGS CRES.

CALGARY, ALBERTA

T2G 4C8

Ph: (403) 287-4774

Fx: 888-364-2727

32050 W. 83rd STREET

DESOTO, KANSAS

66018

Ph: (913) 583-3181

Fx: (913) 583-1406

1175 TWINNEY DRIVE

NEWMARKET, ONTARIO

L3Y 5V7

Ph: (905) 898-1114

Fx: (905) 898-7244

www.engineeredair.com

SALES OFFICES ACROSS CANADA AND USA

Retain instructions with unit and maintain in a legible condition.

Please give model number and serial number when contacting

factory for information and/or parts.

ACRD-200

2 of 14 Sep 06

CRD-200

If any errors or omissions are noted please contact Engineered Air –Calgary Service at (403)

287-4775 or Fax (403) 287-4799.

To ensure warranty is honored, only a qualified HVAC service person, who has received

training on the CRD-200 and C-TRAC3, should be employed for service and troubleshooting.

If further information is required please contact the nearest Engineered Air office.

Under no conditions (except for temporary copying) should the unit function be removed

from the unit. There are two copies provided with the unit. One is in an envelope for copying,

then return it to the unit or store in a safe place. The other is attached to the control panel

door and should never be removed.

This manual is intended to be used in conjunction with the C-TRAC3 Operation, Installation

and Maintenance manual, and the unit function sheet.90

ACRD-200

3 of 14 Sep 06

Table of Contents

Introduction .....................................................................................................................................5

Wiring..............................................................................................................................................5

Display Description .........................................................................................................................6

CRD-200 Operation ........................................................................................................................ 6

Field Wiring Diagram.......................................................................................................................7

Page Description.............................................................................................................................8

Page 1 –Unit Operation.................................................................................................................. 9

Page 2 –Discharge Air ................................................................................................................... 9

Page 3 -Heating ............................................................................................................................. 9

Page 4 -Cooling ............................................................................................................................. 9

Page 5 -Economizer....................................................................................................................... 9

Page 6 –Digital Inputs .................................................................................................................. 10

Page 7 –2nd Discharge Air............................................................................................................ 10

Page 8 –Ambient And Vfd............................................................................................................ 10

Page 9 –Function Type ................................................................................................................ 10

Page 10 –Save Setpoints............................................................................................................. 11

Page 11 –Unit On/Off................................................................................................................... 11

Page 12 –Low Limit...................................................................................................................... 11

Page 13 –Sensor Failure.............................................................................................................. 11

Page 14 –Heat Alarms ................................................................................................................. 11

Page 15 –Special Alarms............................................................................................................. 12

Page 16 –Reset ........................................................................................................................... 12

Points List......................................................................................................................................13

ACRD-200

4 of 14 Sep 06

DELESC ENTER

Ma e l i s

MOD

ACRD-200

5 of 14 Sep 06

INTRODUCTION

The Engineered Air CRD-200 remote display panel is designed to monitor and control

C-TRAC3 equipment operations via Modbus communication.

CRD-200 Command Capabilities

-Quickly identify the current operation of the equipment.

-Ability to scroll to the page associated with specific unit operations, e.g. Cooling

information.

-Alarm identification and associated alarm status.

-Adjustment of manual setpoints, e.g. minimum outside air.

-Enable or disable equipment operation.

The CRD-200 panel can be ordered with the following options:

Option 1: Display only

Option 2: Unit on/off switch.

Option 3: Unit on/off/auto switch c/w internal time clock.

Option 4: Unit occupied/unoccupied/off switch c/w internal time clock.

WIRING

The RS-485 communication cable from the CRD-200 to the C-TRAC3 is 24awg shielded

twisted pair (STP) with a shunt capacitance of 16pF per foot and 100 ohm characteristic

impedance. Category 5 cable can be used as defined by the EIA/TIA/ANSI 568 specification.

An additional set of 24VAC wires is required to power the remote panel. Refer to the table

below for minimum wire size and maximum distance to the remote panel.

Distance <100ft. <150ft. <200ft. <300ft. <350ft. <450ft.

AWG # #20 #20 #20 #18 #18 #16

ACRD-200

6 of 14 Sep 06

DISPLAY DESCRIPTION

CRD-200 Operation

To move between pages press either or .

To escape from modifying an entry press .

To modify a manual value,move to the page that allows manual changes to

the setpoint. Press and then press to decrease and to increase the

value. When the appropriate value has been set, press to save.

To ensure the value is not lost in the event of a power failure or equipment servicing, be sure

to save it. Go to page 10 and press then for yes, then press to save.

To restart the equipment from the CRD-200 go to page 16and press then

press , then press to restart the equipment.

ENTER

ESC

MOD

ENTER

MOD

ACRD-200

7 of 14 Sep 06

FIELD WIRING DIAGRAM

B-

A+

T1 RJ45

CAT 5 CABLE

CRD-200 REMOTE PANEL

ENTER

ESC DEL MOD

EAM G L SI

OFF

SWITCH

HEAT OR COOL

TRO

24VAC

MAXIUM FIELD PANEL DISTANCE FOR 18 AWG WIRE IS350 FTOR

MAXIMUM CONTROL CIRCUIT AMPACITY AMPS AT24 VAC

CATEGORY 5CABLE AS DEFINED BY THE EIA/TIA/ANSI 568 SPECIFICATIONIS24AWG

3. ALL WIRING TO COMPLY WITH THE CANADIAN ELECTRICAL CODE.

2. ALL WIRING SHOWN SHALL BE COMPLETED BYINSTALLER.

1. FIELD WIRING VOLTAGE DROP NOT TO EXCEED 8%.

24VAC

B-

A+

21 4

3 65 8

RJ45

3 65 8

PIN OUTS

BLUE WIRE = #4 PIN

BROWN WIRE = #5 PIN

GREEN WIRE = #8 PIN

CAT 5 WIRE

T1 LEGEND TO C-TRAC

SHIELDED TWISTED PAIR (STP) WITHA SHUNT CAPACITANCEOF 16 pF PER FOOT

AND 100 OHM CHARACTERISTIC IMPEDANCE FOR RS-485COMMUNICATIONTO THE C-TRAC

OFF

450 FT FOR 16 AWG WIRE.

CAT 5 CABLE

(ONLYONECAT 5 CABLE IS CONNECTED, EITHER A.B.C. CABLE OR RJ45 CABLE)

123 567

ACRD-200

8 of 14 Sep 06

PAGE DESCRIPTION

The status information that can be viewed on each page is dependent on the type of

equipment being operated and the current status of the equipment. For example, a make-up

air unit will not have any economizer information.

The CRD-200 can be enabled to allow for the adjustment of setpoints, such as the discharge

air temperature, or the outside air damper minimum position.

Every CRD-200 is preprogrammed with the following information. The LCD will display this

information on display pages and each page is designed to provide the correct state of

operations.

1Unit Operation

2Discharge air

3Heating

4Cooling

5Economizer

6Digital Inputs

72nd Discharge air

8Ambient and VFD

9Function type

10 Save to Flash

11 Unit on/off

12 Low Limit

13 Sensor Failure

14 Heat Alarms

15 Special Alarms

16 Reset Unit

ACRD-200

9 of 14 Sep 06

PAGE 1 –UNIT OPERATION

-Describes the current operating mode and fan status, as well as the program number.

PAGE 2 –DISCHARGE AIR

o F

-Notes the discharge air temperature and setpoint. Multizone equipment will indicate the hot

deck temperature. Dehumidification equipment will refer to the final reheat temperature.

-Setpoint changes can be made here, but will not be saved unless saved to flash memory.

PAGE 3 -HEATING

-Shows the actual heating signal output (%) from the C-TRAC3 to the heating device.

-Indicates the return signal to confirm heating is operational.

PAGE 4 -COOLING

-Describes the number of cooling stages as a percentage. For example, if the equipment has

3 compressors the output will indicate 33, 66 and 100%.

-Also indicates any control corrections in progress.

PAGE 5 -ECONOMIZER

-Indicates the actual C-TRAC3 economizer output and the minimum outside air setpoint (%).

-Setpoint changes can be made here, but will not be saved unless saved to flash memory

(page 10).

-Deviations may occur between setpoint and actual output. Refer to the

C-TRAC3 manual for clarification.

ACRD-200

10 of 14 Sep 06

PAGE 6 –DIGITAL INPUTS

-Primarily a service tool, this page notes the external interlocks that may or may not be

required for certain operations. Refer to the C-TRAC3 OI&M manual for additional

information.

Input Status

Description

1 Mechanical cooling is allowed

A 0 Mechanical cooling is disabled

1 Economizer to minimum position

E 0 Economizer allowed to modulate

1 Heating is allowed

HS 0 Heating is disabled

1 Occupied mode

FS 0 Unit off

1 Unoccupied mode

K 0 Unit off

PAGE 7 –2ND DISCHARGE AIR

o F

-This sensor and setpoint may be used for a variety of applications, including multizone cold

deck, dehumidification pre-cool and room setpoints.

PAGE 8 –AMBIENT AND VFD

o F

-Indicates the ambient sensor reading.

-Also notes the variable frequency drive feedback signal, if equipped.

PAGE 9 –FUNCTION TYPE

-Describes the equipment function and temperature control.

Indice

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