TAC Pneumatic Products Catalog

Zero Energy Band Room Thermostats
For proportional control of pneumatically-operated
sequenced heating and cooling valves and/or
damper actuators to maintain room air temperature
with a zero energy band between heating and
cooling in heating, ventilating, and air conditioning
systems.
Features:
• Attractive appearance.
• Branch-line to sensing-element pneumatic feedback for
linear, stable operation.
• Covers supplied with exposed setpoints and thermometer.
• Cover inserts included for:
- Exposed setpoints only.
- Blank cover.
• Aspirated versions available.
Model Chart
Model No. a
Control
Action b
TK-18xx Series, TKR-18xx Series
a
Celsius models not available for wholesale.
b
Direct Acting (D.A.) � Increase output pressure on temperature rise.
Reverse Acting (R.A.) � Decrease output pressure on temperature rise.
c
Control dial marked �F on one side and �C on the other side; built-in dial stops can limit high and/or low setting of each dial.
Dial
Range c
TK-1801 Direct 55 to 85�F
(13 to 29�C)
TK-1801 Reverse
Thermostat Replacement Kits.
TKR-1801 Reverse 55 to 85�F
(13 to 29�C)
TKR-1811 Direct
TKR-18x1 Includes.
TK-18x1-600
TKR-18x1-600
Quantity Description
1 TK-18x1 thermostat
1 Blank cover insert
1 Cover insert with setpoint cutout
2 1/4 x 5/32 in. barbed fitting
2 5/32 x 5/32 in. barbed fitting
2 1/4 in. O.D. x 2 in. Tygon tubing
2 1/4 x 1/4 in. compression to tubing fitting
1 5/64 in. Allen head cover screw
1 5/64 in. Allen head wrench
90
80
70
60
50
HEATING
COOLING
TK-18x1
TKR-18x1
F-27383-1 © Copyright 2006 TAC. All Rights Reserved. 145
TK-18x
Series
TKR-1
Series