Schneider Electric T158 Series Installation Instructions

T158 Series

Digital, Three-Wire Floating/On-Off

Thermostat/Controller

General Instructions

Application

Most models of the T158 series microprocessor based thermostat/controller with digital display provide a combination of three-wire floating and/or on/off control. 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

•Heating and cooling outputs are individually configurable for three-wire floating or on/off control in 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 providing heating or cooling

•Microprocessor eliminates the necessity for tuning or calibration

•Set point may be calibrated to ±5F degrees

Printed in U.S.A. 5/10

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Schneider Electric T158 Series Installation Instructions

t C A U T I O N

•

Do not use with DC powered motor circuits.

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 position memory.

SPECIFICATIONS Inputs

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.

Outputs

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

	74				100
<![if ! IE]> <![endif]>in Degrees F	73				90	<![if ! IE]> <![endif]>Position (%)
	72				80
	71				70
	70		Room Temp		60
	69		Room Temp		50
	69				50
	68				40
<![if ! IE]> <![endif]>Temp	67				30	<![if ! IE]> <![endif]>Valve
	66				20
	65				10
	65		Valve Position		10
	64		Valve Position		0
	64				0
	0	60	120	120	240
			Time in Minutes

Figure-1 Typical T158 Performance Curve.

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Table-1 Fan Switch Current Ratings (Amps).

Voltage		Inductive		Resistive Amps	Pilot Duty

	FLA		LRA
	FLA		LRA

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	Control Signal		Fan Control	Remote Sensor	Setback	System Switches
Model	Outputs	Options		Fan Control	Remote Sensor	Setback	System Switches
		Options

TA158-001	Dual	6		None	Yes	Yes	Off-Auto-Heat-Cool

TA158-002	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

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).

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TYPICAL APPLICATIONS (wiring diagram)

L1 (HOT)

MED L2 O R NEUTRAL FAN



						24 VAC

SETBACK INPUT
SETBACK INPUT						XFMR
						XFMR

OPEN		MAIN	COM
OPEN		OUTPUT
OPEN
CLOSE
CLOSE	SECONDARY		COM
CLOSE	OUTPUT


	OPTIONAL	REMOTE		SENSOR

OPTIONAL SEASONAL CHANGEOVER SENSOR

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

	1	L1 (HOT)
	1
	2	LO
LINE VOLTAGE	2
LINE VOLTAGE	3	MED		L2 OR NEUTRAL
CONNECTIONS		MED	FAN	L2 OR NEUTRAL
CONNECTIONS			FAN
	4	HI
	4

LOW VOLTAGE 11 CONNECTIONS 12

24 VAC

SETBACK INPUT

XFMR

SETBACK

SWITCH

MAIN

OUTPUT

1ST STAGE

SECONDARY

OUTPUT

FAN/

DEMAND

2ND STAGE

SECONDARY

OUTPUT

OPTIONAL REMOTE PROBE

OPTIONAL CHANGEOVER SENSOR

Figure-3 Typical Wiring For On/Off Control.

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INSTALLATION Inspection

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.

Requirements

•

Precautions

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 vibration are present.

•Avoid electrical noise interference. Do not install near large conductors, electrical machinery, or welding equipment.

Federal Communications Commission (FCC)

N O T E

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)

N O T E

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

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