EngA C-TRAC2 - User Manual

A
IOM-12 Page 1 March 1999 R1
INSTALLATION, OPERATION
AND MAINTENANCE MANUAL
FOR
C-TRAC2
COOLING CONTROLLER
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.
SE
CALGARY, ALBERTA
T2G 4C8
Ph: (403) 287-4774
Fx: 888-364-2727
32050 W. 83
rd
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
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
Engineered Air for information and/or parts.
www.engineeredair.com

EngA C-TRAC2 Specifications

General

Brand	EngA
Model	C-TRAC2
Category	Controller
Language	English

Summary

VII. DIP SWITCHES AND POTS

VIII. POTS AND DIP SWITCH CHART

XIV. SENSORS AND SET-POINTS

The Master Set-Points

Primary set points for economizer and mechanical cooling.

The Optional Reset Inputs

XI. CONTROL START-UP AND OPERATING STRATEGIES

Heat Output

Economizer Control

Configuration and operation of economizer functions.

Cooling

Details on compressor ambient lockout and cooling delays.

XVII. ROOM RESET THERMOSTAT OPTIONS

Options

TE 6100-960 Set-Point Controller Connections

Option 1 - Combination SensorSet-Point

Option 2 - Remote Discharge Set-Point with Separate Discharge Sensor

XX. SET-POINT CALIBRATION

TE 6100-960 Johnson Controls Set-PointSensor Approximate Resistance

Sensor Resistance Chart for TE 6100-960 and TE 6000-960

Discharge Temperature Calibration Methods

Methods for calibrating discharge temperature.

Discharge Calibration Method 1

Procedure for calibrating discharge temperature.

Discharge Calibration Method 2

Discharge Calibration Method 3

Discharge Calibration Method 4

Room or Return Air Temperature Calibration Methods

Room Calibration Method 1

Room Calibration Method 2

Ambient Reset Calibration

XXI. C-TRAC2.1 SET UP SHEET

XXII. TROUBLE SHOOTING

To Simulate a Full Call for Cooling

Procedure to simulate a cooling demand.

To Simulate a Full Call for Heat

Procedure to simulate a heating demand.

C-TRAC2.1 Internal Operating Rules

C-TRAC2.1 Set-Point Calculation

Heating Trouble Shooting

Overheating

Troubleshooting causes and solutions for overheating.

Is there any problem with the discharge sensors resistance?

Are the controls calibrated?

No Heat

Discharge Too Cool

Hunting (External Causes)

H-TRAC

G-TRAC, DJM2.1

Possible C-TRAC2.1 Adjustments to Reduce Hunting

Economizer Trouble Shooting

0 to 10 VDC Motors

Troubleshooting 0-10 VDC economizer motors.

Motors wired to R, B, and W terminals

Troubleshooting R, B, W wired economizer motors.

Economizer Not Opening

Mechanical Cooling Trouble Shooting

Cooling Not Running

Steps to take when mechanical cooling is not running.

QUICK CHECK FOR C-TRAC-2.1 NORMAL OPERATING SEQUENCE

AIR CONDITIONING (Air Cooled Condenser)

Determine type of compressor - Hermetic (welded) or Semi-Hermetic (bolted)

If compressor doesnt run:

Troubleshooting steps when a compressor fails to run.