Schneider Electric T158 Series Installation Instructions

Application

T158 Series

Most models of the T158 series microp rocessor based thermostat/controller with digital display provide a combination of three-wire floating and/or on/off contro l. TA158 models are on/off control only. This series can control a variety of two-pipe and four-pipe fan coil units, air handling units, unitary equipment, for heating and cooling applications.

The microprocessor combines a proportional intergral control algorithm with adaptive logic. This provides control without the need for tuning or calibrating the control algorithm in the field.

Features

T158 Series

Digital, Three-Wire Floating/On-Off

Thermostat/Controller

General Instructions

• Heating and cooling outputs are individually

configu in

rable for three-wire floating or on/off contro

the normally open or normally closed modes

• Line voltage continuous three-speed fan control

• Manual or automatic changeover

• Remote setback capability from a time clock or

facility management

system

• Fahrenheit or Celsius display capability

• Built-in purge cycle assists the controller to

determine if the controlling agent is provid he

ating or cooling

ing

• Microprocessor eliminates the necessity for tuning

calibration

• Set point may be calibrated to ±5F degrees

t C A U T I O N

SPECIFICATIONS

74 73 72 71 70 69 68 67 66 65 64

100 90 80 70 60 50 40 30 20 10 0

60 120 120 240

Time in Minutes

Temp in Degrees F

Valve Position (%)

Valve Position

Room Temp

Figure-1 Typical T158 Performance Curve.

Inputs

Outputs

• Do not use with DC powered motor circu its.

• Do not use on actuators with a stroke time of less than 1 minute or greater than 3 minutes.

• Do not use on actuators with positi o n memo ry.

Power Input: 20 to 28 Vac, nominal 24 Vac. Power Consumption: 25 mA maximum at 24 Vac.

Connections:

Power, Up to 14 AWG wire. Control, Up to 14 AWG wire.

Electrical:

Output Ratings, 10 VA at 24 Vac. Operating Differential, 1F degree (0.6C degree). Setpoint Adjustment Range, 50 to 90° F (10 to 32°C). Changeover Deadband, 3F degrees (1.6C degrees). Proportional Band, 2F degrees (1.1C degrees).

Mechanical:

Display Range, 32 to 99°F (0 to 37°C) Material, Rigid vinyl. Finish, Cool gray.

Environment

Temperature Limits:

Shipping & Storage, -30 to 130°F (-34 to 55°C).

Operating, 32 to 130°F (0 to 55°C). Humidity: 95% Non-condensing. Shipping Weight: 0.6 lbs (270 g). Location: NEMA Type 1.

Agency Listings

CE: Compliant.

Performance

Table-1 Fan Switch Current Ratings (Amps).

Voltage

24 N/A N/A N/A 24 VA 120 5.8 34.8 6.0 125 VA 240 2.9 17.4 5.0 125 VA 277 2.4 14.4 4.2 125 VA

Table-2 Model Chart.

Model Outputs

T A158-001 Dual 6 None Yes Yes Off-Auto-Heat-Cool T A158-002 Dual 6 Off-Hi-Med-Lo Yes Yes Off-Auto-Heat-Cool TB158-001 Dual 1, 2, 3, 4, 5, 6 None Yes Yes Off-Auto-Heat-Cool TB158-002 Dual 1, 2, 3, 4, 5, 6 Off-Hi-Med-Lo Yes Yes Off-Auto-Heat-Cool TB158-003 Single 5, 7 Off-Hi-Med-Lo Yes Yes Off-Heat/Off-Cool TB158-007 Single 5, 7 None Yes Yes None

Control Signal

Options

Fan Control Remote Sensor Setback System Switches

Inductive

Resistive Amps Pilot Duty

FLA LRA

TB158-015 Single 5, 7 None Yes Yes Off-Heat/Off-Cool TB158-017 Dual 1, 2, 3, 4, 5, 6 Off/On Yes Yes Off-Auto-Heat-Cool TB158-018 Single 5, 7 Off/On Yes Yes Off-Heat/Off-Cool

1. Three-wire floating single stage cooling and three-wire floating single stage heating.

2. Three-wire floating cooling and two stage on/off heating.

3. Single stage on/off cooling, on/off fan control and three-wire floating single stage heating.

4. On/off single stage cooling, on/off single stage heating and fan control.

5. Three-wire floating single stage cooling or single stage heating.

6. On/off single stage cooling, and on/off single stage heating.

7. On/off single stage cooling or on/off single stage heating.

Accessories

65345 4-3/4” x 4-3/4” adapter plate. 65406 Remote/changeover sensor, 60" leads 10k Ω @ 77°F (25°C).

TYPICAL APPLICATIONS (wiring diagram)

L1 (HOT)

MED

L2 OR NEUTRAL

OPTIO

L REMOTE SENSO

OPTIONAL SEASONAL

CHAN

GEOVER SENSO

OPE

LOSE

COM

24 VAC XF

SET

BACK

INPUT

MAI

OUTPUT

SECO

NDAR

UTPU

COM

Figure-2 Typical Wiring For 3-Wire Floating Control.

L1 (HOT)

L2 OR NEUTRAL

LINE VOLTAGE

CONNECTIONS

LOW VOLTAGE

CONNECTIONS

24 VAC

XFMR

SETBACK INPUT

SETBACK

SWITCH

1ST STAGE

SECONDARY

OUTPUT

MAIN

OUTPUT

FAN/

DEMAND

2ND STAGE

SECONDARY

OUTPUT

OPTIONAL REMOTE PROBE

OPTIONAL CHANGEOVER SENSOR

FAN

15 16

MED

Figure-3 Typical Wiring For On/Off Control.

INSTALLATION

N O T E

Inspection

Requirements

Precautions

Inspect the package for damage. If damaged, notify the appropriate carrier immediately. If undamaged, open the package and inspect the device for obvious damage. Return damaged products.

• Tools (not provided)

— Screwdriver —Digital multimeter

• Training: Installer must be a qualified, experienced technician

• Other accessories as appropriate

General WARNING:

• Electrical shock hazard! Disconnect power before installation to prevent electrical shock

or equipment damage.

• Make all connections in accordance with the electrical wiring diagram and in accordance

with national and local electrical codes.

CAUTION:

• Avoid locations where excessive moisture, corrosive fumes, explosive vapors, or vibra-

tion are present.

• Avoid electri c al no ise interference. Do not install near large conductors, electrical

machinery, or welding equipment.

Federal Communications Commission (FCC)

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in residential installations. This equipment generates, uses, and can radiate radio frequency energy and may cause harmful interference if not installed and used in accordance with the instructions. Even when instructions are followed, there is no guarantee that interference will not occur in a particular installation. If this equipment causes harmful interference to radio and television reception—which can be determined by turning the equipment off and on—the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment to an outlet on a circuit different from that to which the receiver

is connected.

• Consult the dealer or an experienced radio/television technician for help.

Canadian Department of Communications (DOC)

This class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.

Cet appareil numerique de la classe B respecte toutes les exigences du Reglement sur le material broilleur du Canada.

European Standard EN 55022 WARNING:

• This is a class B (European Classification) product. In a domestic environment this prod-

uct may cause radio interference in which case the user may be required to take adequate measures.

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