Accessory List

TA-155 Series, TB-155 Series
F-27382-1 © Copyright 2006 TAC. All Rights Reserved. 227
Specifications
Accessories
Typical Applications
CAUTION: All models, output terminals voltage will be the same as the input voltage to the thermostat. If the thermostat is powered with
120Vac terminal block-1 terminals 1, 2, 3, and 4, terminal block 2-terminals 1, 2, 3, 4 and 5 and terminal block 3-terminals 1, 2 and 3 will all have
120 Vac.
Inputs
Power input 24 to 277 Vac @ 50/60 Hz, full wave device.
Power consumption 0.88 watts at maximum.
Connections
Power: Up to 14 AWG wire.
Control: Up to 14 AWG wire.
Outputs
Electrical
Thermostatic heat/cool output switch ratings: 10 VA @ 24 Vac, Pilot duty 20 VA @ 120 - 277 Vac.
Full wave device.
Control ranges
Operating differential: 1 F degree (0.6 C degree).
Changeover deadband (TB155 only): 4 F degrees (2.2 C degrees).
Setpoint adjustment range: 50 to 90°F (10 to 32°C).
Mechanical
Material: Rigid vinyl.
Finish: Cool gray.
Environment
Ambient temperature limits
Shipping and storage:-30 to 130°F (-34 to 55°C).
Operating: 32 to 130°F (0 to 55°C).
Humidity Maximum 95% con-condensing.
Locations NEMA Type 1.
Dimensions 4-1/2 H x 2-3/4 W x 1 D inches (114 x 79 x 25 mm).
Agency Listings CE compliant.
UL File #E50023.
CUL File #E50023.
General Instructions Refer to F-27022.
Model No. Description.
680-243 Auto seasonal changeover switch.
65345 4-3/4 x 4-3/4” adapter plate.
65170 Warmer/cooler set point dial.
65410 Celsius set point dial, 10 to 34°C.
65821 TA/TB 155 blank cover (no TAC logo).
65860 Set point dial stop kit.
Figure 1 Typical 2-Pipe Cooling or Heating Only.
No Fan Connections. Cooling Shown.
Figure 2 Typical 2-Pipe Heating/Cooling/Continuous Fan
with System Switch off, Fan is Off.
4
3
2
1
1
2
3
TB1
TB3
L1 (HOT)
COOLING
VALVE
L2 OR NEUTRAL
TA-155-18
(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
TA-155-17
680-243
CHANGEOVER
THERMOSTAT
PIPE MOUNTED
WHT
BLK
BLU
LOW
MED
L1 (HOT)
FAN
HI