Brochure

T12 through T33 Series (2211 through 2218 Series)
Room Thermostats
Model Chart
These pneumatic room thermostats are designed
for proportional temperature control of pneumatic
valves and damper actuators to maintain room air
temperatures in heating, ventilating, and air
conditioning systems.
Features:
• Small size, approximately 2 x 2 in. (51 x 51 mm).
• Attractive appearance (various metal or ABS plastic covers
available).
• Factory calibrated. S.S. ball-in-seat provides pneumatic
feedback for linear, stable operation.
• Easy-to-use throttling range adjustment and recalibration.
• Adjustable (patented) bimetal shows actual throttling range
in both qF and qC. Adjustable 2 to 12qF (1 to 6.7qC).
• Setpoint (in both qF and qC) shown on thermostat body
with cover removed.
• Leakproof, O-ring sealed, spring-loaded self-closing
branch gauge tap.
• T23, T24, T27, 2214, and 2216 only:
- Separate factory-calibrated night bimetal and setpoint
dial, with fixed 4qF night throttling range for accurate
“night” operation.
- Snap-acting (not gradual) changeover from “day” to
“night” operation and vice versa.
• T27 and 2216 only:
- Third port (R) output with manual reset lever allows full
restoration of day operation (typically, of unit ventilator),
with either manual or automatic reset to day-night
schedule.
• T32, T33, and 2218 only:
- Snap-acting (not gradual) changeover from direct-action
to reverse-action and vice versa.
Model No.
a
Wholesale
Model No.
b
Model No.
a
Wholesale
Model No.
b Dial Range
qF (qC)
Air
Consumption
Description
(Refer to Following Pages for
More Detail)
W/O Dial Limit Stops With Dial Limit Stops
T12-301
2211-012
2211-411
c
T12-3011
T12-3081
c
2211-112
2211-512
c
55 to 85
(13 to 29)
0.017 scfm
at 20 psig (0.48
L/m at 138
kPa)
Single temperature, one-pipe, D.A.
T12-3011 same as T12-301, but
has factory-installed
10-59 setpoints stops.
T13-301
2211-013
2211-412
c
T13-3011
T13-3081
c
2211-113
2211-513
c
Single temperature, one-pipe, R.A.
T13-3011 same as T13-301, but
has factory-installed
10-59 setpoint stops.
T12 th
r
o
T33 Se
r
(2211
throug
h
2218 S
e
F
C
5
2
12
6
2
F-27383-1 © Copyright 2006 TAC. All Rights Reserved. 119