T775j electronic remote temperature controller – Honeywell Electronic Remote Temperature Controller T775J User Manual

Page 5

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T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER

63-2248—4

5

Fig. 5. Feature locations.

IMPORTANT

Erratic temperature readings from the 193987GA
Sensor can be caused by poor wiring practices that
must be avoided to assure proper operation:

a. Do not route temperature sensor wiring with

building power wiring.

b. Do not locate temperature sensor wiring next to

control contactors.

c. Do not locate temperature sensor wiring near

electric motors.

d. Do not locate temperature sensor wiring near

welding equipment.

e. Make sure good mechanical connections are

made to both the sensor and the controller.

f. Do not mount sensor with leadwire end (wire end)

pointing up in an area where condensation can
occur.

g. Use shielded wiring to connect the sensor to the

T775 when an electrically noisy environment
exists. See Fig. 6.

SELECT

SET

ENTER

NO COM NC

OUTPUT 1

OUTPUT 2

NO COM NC

120V

COM

240V

12

3

4

SA

SB

1 2 3

1

2

3

4 5 6 7 8

SA TOD 24V

SB

C/F

T775

GROUND
SHIELD
TO T775
CASE OR TO
GROUNDING
SCREW

SHIELDED
CABLE

SHIELDED
CABLE

GROUNDING SCREW

NOTE: DO NOT GROUND
SHIELDED CABLE AT
SENSOR END.

NOTE: TO MINIMIZE NOISE PICKUP, MAKE CONNECTION
FROM SHIELDED CABLE AS CLOSE AS POSSIBLE
TO SENSOR BODY.

SENSOR

M4718

Fig. 6. Using shielded cable for cable

runs longer than 25 feet.

SELECT

SET

ENTER

NO COM NC

OUTPUT 1

OUTPUT 2

NO COM NC

120V

COM

240V

12

3

4

SA

SB

1 2 3

1

2

3

4 5 6 7 8

SA TOD 24V

SB

C/F

M8118

LCD
TEMPERATURE
DISPLAY

PROGRAMMING
KEYS

SENSOR INPUT,
TOD, AND
24V TERMINALS

KNOCKOUT "A"

KNOCKOUT "B"

KNOCKOUT "C"

MODULATING OUTPUT
ELECTRONIC
SERIES 90, 4-20 mA
OR 0-18 VDC
DEPENDING ON MODEL

RELAY OUTPUT
STAGES

LINE
VOLTAGE
INPUTS

MOUNTING
HOLE
LOCATION

RESET DIP
SWITCHES

O

C /

O

F SELECTION

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