Install Instructions

Printed in U.S.A. 8/08 Copyright 2008 TAC All Rights Reserved. F-27495-3
Application
The 2212-112 and 2212-113 Series Pneumatic Room
Thermostats are designed for proportional control of
pneumatic devices and actuators in environmental
control systems. These two-pipe thermostats
incorporate a highly sensitive bimetal thermostatic
element and a pilot operated relay with pneumatic
feedback for accuracy and stability over the entire
operating range.
These thermostats have a serrated thumb wheel for
setpoint adjustment.
Specifications
Action: Proportional.
Setpoint Range: 55 to 85 °F (13 to 29 °C).
Throttling Range: 2 to 12 °F, adjustable.
Supply Air Pressure: 20 psig.
Maximum Air Pressure: 30 psig.
Main Air Consumption: 15 scim.
Calibration Point: 9 psig branch line pressure when
ambient equals setpoint (factory-set).
Setpoint Adjustment: Serrated thumbwheel.
Construction:
Mechanical Components, Die cast aluminum, stainless
steel, and glass-filled nylon.
Diaphragm, Fabric-reinforced Neoprene.
Air Lines, Connect to thermostat nipples with
spring-reinforced plastic tubes.
Branch Connections, Equipped with internal fiters.
Environment:
Humidity: 5 to 95% relative humidity, non-condensing.
Figure-1 Piping Diagram.
Table-1 Model Chart — Thermostats.
Wholesale
Number
Replaces
Model
Action Description
2212-118 T18-301 Direct
Includes (2) 1/4" x 3/16"
barbed couplings, 20-693
tubing, 20-714 wall plate,
20-711 mounting plate, and
mounting screws.
2212-119 T19-301 Reverse
M
20 psig
Main Air
MB
To Final Control
Device
Accessories
Location
Caution:
• Do not locate the thermostat near sources of heat or
cold, such as lamps, motors, sunlight, or concealed
ducts or pipes. Doing so will affect the accuracy of the
thermostat.
• Avoid installing the thermostat on outside walls. If such a
location is necessary, mount the thermostat on an
insulated back plate.
• Mount thermostats only after the wall surfaces have
been finished.
Part
Number
Replaces
Model
Description
Accessories
20-660 6-441 Cover screw
20-707 10-53 Metal thermometer guard
20-712 10-59 Internal stop kit
20-715 10-62 Clear cover thermostat guard
21-876 10-76 Opaque cover thermostat guard
21-928 Cover, gray plastic with blank dial
21-930 Cover, white plastic with °F/ °C dial
21-933 Cover, gray plastic with humidity dial
Calibration
20-881 N2-4 Thermostat calibration wrench
22-138 MCS-GA Branch tap gauge adaptor
900-002 Thermostat calibration kit
Installation
20-850 Thermostat mounting plate
22-021 Universal wall mounting kit
22-022 N5-95 Thermostat conversion kit
22-023 Thermostat conversion kit, white
22-024 Thermostat mount bracket
10-82-SS Outlet box mounting plate S.S.
21-473 Snap-in drywall mounting
2212-118, 2212-119 Series
Pneumatic Two-Pipe Room Thermostats
Installation Instructions