Schneider Electric Erie T155 Series Installation Instructions
Application
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T155
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)
Schneider Electric Erie T155
Series
Non-Digital, On/Off Thermostat
General Instructions
• 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)
Printed in U.S.A. 6-10 Copyright 2010 Schneider Electric All Rights Reserved. F-27022-3
SPECIFICATIONS
Inputs
Outputs
Control
Enclosure
Environment
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.
Electrical:
Heat/Cool Output Rating, Pilot Duty, 10 VA at 24 Vac, 20 VA at 120 -277 Vac.
Fan Switch, Refer to Table-1
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).
Setpoint Adjustment Range: 50 to 90F (optional dial, 10 to 32C).
Material, Rigid vinyl. Finish, Cool gray.
Temperature Limits:
Shipping & Storage, -30 to 130F (-34 to 55C).
Operating, 32 to 130°F (0 to 55°C). Shipping Weight: 0.31 lbs (140 g). Location: NEMA Type 1.
Agency Listings
CE: Compliant.
Table-1 Fan Switch Current Ratings (Amps).
Inductive
Volt ag e
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
a Fan and system must share the same voltage.
Table-2 Model Chart.
Model Outputs Changeover Fan Control System Switches
TA155-010 Dual Manual Hi-Med-Lo Heat-Off-Cool
TA155-017 Single N/A Hi-Med-Lo On-Off
TA155-018 Single N/A None None
TB155-010 Dual Automatic
TB155-015 Dual Automatic
a
Resistive Amps Pilot Duty
a
a
Hi-Med-Lo On-Off
None None
a Automatic changeover models have a 4F degree deadband between heating and cooling.
2 Copyright 2010 Schneider Electric All Rights Reserved. F-27022-3
Accessories
4
3
2
1
1
2
3
TB1
TB3
L1 (HOT)
COOLING
VALV E
L2 OR NEUTRAL
TA155-018
(FOR HEATING ONLY, WIRE TO TB3, #1)
4
3
2
1
1
2
3
1
2
3
4
5
TB1
TB2
TB3
HEATING/
COOLING
VALVE
L2 OR NEUTRAL
TA155-017
680-243
CHANGEOVER
THERMOSTAT
PIPE MOUNTED
WHT
BLK
BLU
LOW
MED
L1 (HOT)
FAN
HI
Figure-1 Typical 2-Pipe Cooling or Heating Only.
No Fan Connections.
Figure-2 Typical 2-Pipe Heating/Cooling/Continuous Fan
with System Switch off, Fan is Off.
4
3
2
1
1
2
3
1
2
3
4
5
TB1
TB2
TB3
COOLING
VALVE
HEATING
VALVE
L2 OR NEUTRAL
TA155-010
LOW
MED
L1 (HOT)
FAN
HI
FAN
RELAY
FAN
RELAY
Figure-3 Typical 4-Pipe Heating/Cooling Fan cycles with
Demand for Heating or Cooling. With System Switch Off,
Fan is Off.
Figure-4 Typical 4-Pipe Heating/Cooling.
No Fan Connections.
/
Figure-5 Typical 2-Pipe Heating/Cooling Fan Runs
with System Switch On or Off.
Figure-6 Typical 2-Pipe Heating/Cooling Fan Cycles
with Demand for Heating or Cooling.
With System Switch Off, Fan is Off.
Wiring
65345 4-3/4” X 4-3/4” adapter plate.
65406 Remote or changeover sensor, 60" leads 10k @ 77F (25C).
65409 Fahrenheit set point dial 50 to 90F
65410 Celsius set point dial, 10 to 32C.
65170 Warmer/cooler set point dial.
65860 Set point dial stop kit. Limits dial travel in 2F degree increments.
680-243-5 Auto seasonal changeover switch.
680-243-6 Auto seasonal changeover switch.
TA155-017
TB3
TA155-015
TB3
1
2
3
TB1
4
3
2
1
680-243
CHANGEOVER
THERMOSTAT
PIPE MOUNTED
BLK
1
2
BLU
3
WHT
HEATING
COOLING
VALV E
TA155-017
TB3
1
2
3
BLK
BLU
L1 (HOT)
680-243
CHANGEOVER
THERMOSTAT
PIPE MOUNTED
WHT
HEATING
COOLING
FAN
RELAY
VALV E
VALV E
HEATING/
COOLING
VALV E
L2 OR NEUTRAL
TB2
TB1
4
F-27022-3 Copyright 2010 Schneider Electric All Rights Reserved. 3
2
1
3
1
2
3
4
5
HI
MED
LOW
L1 (HOT)
FAN
TB2
L2 OR NEUTRAL
TB1
4
3
2
1
L1 (HOT)
1
2
HI
MED
LOW
FAN
L2 OR NEUTRAL
3
4
5
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