Product Data

ManualsBrandsPeco Controls ManualsHeating SuppliesHeating and Cooling Thermostat w/ auto changeover

Litho in U.S.A. 3-02 F-27022

Invensys Energy Solutions

Building Systems - Americas

1354 Clifford Avenue

P.O. Box 2940

Loves Park, Illinois 61132-2940

www.invensysibs.com

Application

The T155 series thermostat provides on/off control for

low voltage and line voltage valves, relays and fan

motors. Applications include two pipe and four pipe fan

coil units, ventilators and air quality operations.

Features

• Manual or automatic changeover models

• Line voltage 3-speed fan control

• Continuous or cycling fan operation (cycling fan

operation requires additional relay or relays)

• Remote sensor capability for seasonal changeover

• Handles all supply voltages from 24 to 277 Vac at

50/60 Hz (fan and system voltage must be the same)

Erie™ T155 Series

Non-Digital, On/Off Thermostat

General Instructions

T155

Summary of content (8 pages)

PAGE 1
TM Invensys Energy Solutions Building Systems - Americas 1354 Clifford Avenue P.O. Box 2940 Loves Park, Illinois 61132-2940 www.invensysibs.com Erie™ T155 Series Non-Digital, On/Off Thermostat General Instructions Application The T155 series thermostat provides on/off control for low voltage and line voltage valves, relays and fan motors. Applications include two pipe and four pipe fan coil units, ventilators and air quality operations.
PAGE 2
SPECIFICATIONS Inputs Power Input: 24 to 277 Vac @ 50/60 Hz. Power Consumption: 0.88 watts at maximum. Connections: Power, Up to 14 AWG wire. Control, Up to 14 AWG wire. Outputs Electrical: Heat/Cool Output Rating, Pilot Duty, 10 VA at 24 Vac, 20 VA at 120 -277 Vac. Fan Switch, Refer to Table-1 Control Deadband (TB155 Auto Changeover Models Only): 4F degrees (2.2C degrees). Deadband (TA155-017 and TA155-018): 0F degrees (0C degrees). Operating Differential: 1F degrees (0.6C degrees).
PAGE 3
Accessories 65345 65406 65409 65410 65170 65860 680-243-5 680-243-6 4-3/4” X 4-3/4” adapter plate. Remote or changeover sensor, 60" leads 10k Ω @ 77°F (25°C). Fahrenheit set point dial 50 to 90°F Celsius set point dial, 10 to 32°C. Warmer/cooler set point dial. Set point dial stop kit. Limits dial travel in 2F degree increments. Auto seasonal changeover switch. Auto seasonal changeover switch.
PAGE 4
HEATING VALVE Tb155-010 TB3 1 2 3 COOLING VALVE TB2 TB1 4 3 2 1 1 2 3 4 5 L1 (HOT) HI MED LOW FAN L2 OR NEUTRAL Figure-7 Typical 4-Pipe Heating/Cooling Fan Runs Continuously with System Switch On. With System Switch Off, Fan is Off. 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.
PAGE 5
Figure-8 Mounting. Seasonal Changeover Sensor When installing the seasonal changeover sensor strap on the sensor to the main coil input or a pipe that will determine the fluid temperature of the coil. If a well is available use thermal grease for a faster temperature response. Insulate the entire sensor and pipe two inches before and after the sensor for a total of approximately six inches. This insulation is used to decrease the affect of ambient temperature upon the sensor.
PAGE 6
Terminal Description CONNECTIONS Terminal Block 3 1 Heat 2 Cool 3 Sw'd power Terminal Block 2 1 L1 2 High 3 Med 4 Low 5 Fan hot Terminal Block 1 4 L2 or neutral 3 No connection 2 Remote sensor 1 Remote sensor TB3 TB1 TB2 JP1 Figure-9 Terminal Definitions. CHECKOUT 1. Verify the system voltage. 2. Make sure the fan switch and the system switch voltages are the same. 3. If a transformer is being used make sure it is large enough to support the current demands of all controls wired to the transformer. 4.
PAGE 7
DIMENSIONAL DATA 2-3/4 (70) 1 (25) 4-1/2 (114) 3-5/16 (84) 2-1/8 (53) 11/32 (9) 1/2 (13) OPENING FOR WIRING MOUNTING SLOTS (2) 5/32 X 3/8 REF. (4 X 100) Figure-9 T155 Series. 3/16 (5) DIA. BLIND HOLE 10 PLACES 4-3/4 (120) 1/8 (3) DIA. BLIND HOLE 2 PLACES 1-13/16 (46) 3-1/4 (83) 1-13/16 (46) 3-1/4 (83) 4-3/4 (120) WALL PLATE (BACK VIEW) Figure-10 Adapter Plate. Figure-11 Remote Sensor/Change Over Sensor.
PAGE 8
All specifications are nominal and may change as design improvements are introduced. Invensys Building Systems shall not be liable for damages resulting from misapplication or misuse of its products. The following trademarks are the property of Invensys: Invensys Boiler Boss Erie F-27022 Printed in U.S.A.