Accessory List

TC-2931, TC-2942
258
© Copyright 2006 TAC. All Rights Reserved. F-27382-1
Strap-on Changeover Thermostat
Model Chart
Specifications
Typical Applications
This thermostat provides summer-winter
changeover in hydronic heating-cooling
systems.
Features:
• Fixed control point. No adjustment required.
Model No. Type
Switch Ratings (AC only)
Blue-Yellow
Close on Rise
°F (°C)
Red-Yellow
Close on Drop
°F (°C)
Vac
FLA
(amps)
LRA
(amps)
Pilot Duty
(VA)
TC-2931 Strap-on
120
240
5.8
2.9
34.8
17.4
125 82 (28) 67 (19)
TC-2942 Strap-on enclosed
a
a
Has 1/2 in. (12.7 mm) conduit adaptor.
Setpoint 75°F (24°C) approximately, fixed.
Sensing element Bimetal.
Differential 15 F degrees (8 C degrees) fixed.
Ambient temperature limits
TC-2931
Shipping: -40 to 167°F (-40 to 75°C).
Operating: -40 to 167°F (-40 to 75°C).
TC-2942
Shipping: -40 to 220°F (-40 to 104°C).
Operating: -40 to 220°F (-40 to 104°C).
Minimum hot water temperature 90°F (32°C).
Maximum chilled water temperature 60°F (16°C).
Electrical switch Snap acting SPDT with silver contacts.
Ratings Refer to Model Chart.
Sensing element Bimetal disc.
Connections
TC-2931 Three color coded 16 gage leads 3 ft. (914 mm) long.
TC-2942 Three color coded 16 gage leads 3 ft. (914 mm) long with 1/2 in. (12.7 mm) conduit adaptor.
Case Hermetically sealed steel.
Mounting On up to 1-1/2 in. (51 mm) pipe with mounting springs provided.
Dimensions 2 in. dia. x 1-1/2 H in. (51 x 38 mm).
Agency Listing UL, CSA approved.
General Instructions Refer to F-12720.
Figure 1 Typical Lead Connections TC-2931. Figure 2 Typical Lead Connections TS-2942.
TC
-
2931
TC-294
2
TC-2931
Open Type
TC-2942
Enclosed T
yp
e
Blue Red
Temperature
Drop
Red makes ON temperature drop
(Yellow) Common
Black Blue
Temperature
Drop
(
White
)
Common