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W-TRAC

 

 
 

IOM‐49 

                           6 of 12 

Mar 99  R4 

 

 
 

CONTROLLER

 

DESCRIPTION

 

 

TERMINAL

 

LIST

 

 

Terminal 

Description 

C1 

Sensor common, and 0‐10Vdc reset common (‐). 

0‐10Vdc temperature reset input (+). 

Supply air temperature sensor input. 

Exhaust air temperature sensor input. 

Outside air temperature sensor input. 

RMH 

0‐10Vdc return air RH% input. 

EXH 

0‐10Vdc exhaust air RH% input. 

MOD 

0‐10Vdc heat wheel control output (+). 

C2 

0‐10Vdc heat wheel control output (‐). 

+12 

12Vdc output power 

+32 

32Vdc output power (RH% sensor hot) 

T2(N) 

24Vac Neutral power input. 

T1 

24Vac Hot power input. 

Output contact common 

Output contact normally closed (N.C.) 

Output contact normally open (N.O.).  Start contact. 

P1 

Low output potentiometer (legacy, for old style DC drive motors). 

P2 

Wiper output potentiometer (legacy, for old style DC drive motors). 

P3 

High output potentiometer (legacy, for old style DC drive motors). 

 

DIP

 

SWITCHES

 

 
W‐TRAC  configuration  options  are  configured  by  DIP  switch  selection  and/or  wiring  connections.    These 
are factory set and should not normally need to be altered. 

 

DIP SW 

Description 

BDRH SP EN 

‘ON’ when RH% sensing of the return air is not used.  W‐TRAC will control based on 
pre‐defined RH% values.  Switch will be ‘OFF’ when sensing actual RH%. 

EXRH CTRL 

‘ON’ when using exhaust air RH% sensing. 

BDRH CTRL 

‘ON’ when RH% sensing of the return air is not used.  Switch must be in the same 
position as BDRH SP EN (above). 

MAN HI SPEED* 

‘ON’ to drive the output to maximum wheel rotation speed. 

MAN LO SPEED* 

‘ON’ to drive the output to minimum wheel rotation speed. 

* Do not enable both switches at the same time, or leave either switch ‘on’ in normal operation. 
 

Содержание EngA W-TRAC

Страница 1: ...ORY CANADIAN EASTERN FACTORY 1401 HASTINGS CRES SE 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 NE...

Страница 2: ...a safe place The other set is attached to the control panel door and should never be removed Please report any omissions to the national service manager Warning Improper installation adjustment altera...

Страница 3: ...A W TRAC IOM 49 3 of 12 Mar 99 R4...

Страница 4: ...7 TEMPERATURE CONTROL 7 BASE SETPOINT 8 SETPOINT RESET 8 FROST CONTROL 8 EXHAUST AIR RH SENSOR 8 RETURN AIR RH SENSOR 9 BDRH PREDICTED RETURN AIR RELATIVE HUMIDITY 9 WIRING 9 SENSOR TABLE 12 SERVICE N...

Страница 5: ...AC is designed to control only Engineered Air equipment Various upgrades and improvements have been made over time Always include any suffix letters and numbers for troubleshooting and or replacement...

Страница 6: ...d style DC drive motors P2 Wiper output potentiometer legacy for old style DC drive motors P3 High output potentiometer legacy for old style DC drive motors DIP SWITCHES W TRAC configuration options a...

Страница 7: ...y experienced and qualified personnel POT Description DIS CAL Discharge temperature sensor calibration EX CAL Exhaust temperature sensor calibration AMB CAL Ambient outdoor temperature sensor calibrat...

Страница 8: ...put voltage to terminals S and C1 with a setpoint fixed at 66 F Refer to the equipment function page for the design reset range Input Voltage 0 0 2 0 4 0 6 0 8 0 10 0 Discharge Setpoint F C No Resisto...

Страница 9: ...values are expected to be reasonably constant In these cases the W TRAC operates by sensible temperature only When enabled the BDRH pot Building Design Relative Humidity is set according to the expec...

Страница 10: ...ers Refer to the equipment wiring diagram for connection details The following setup parameters are typical Always refer to the equipment function sheet for any changes To ensure proper setup operatio...

Страница 11: ...the temperature at the sensing element Compare these readings to the sensor table values If the resistance is out by more than 16 ohms replace the sensor Measuring a sensor temperature between 60 70...

Страница 12: ...RH SENSOR TABLE Sensor Resistance Chart for TE6000EA3 Table 2 C F Resistance C F Resistance C F Resistance 40 40 602 18 3 65 983 48 9 120 1234 34 4 30 633 20 68 996 54 4 130 1269 28 9 20 665 20 6 69 1...

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