T.a.c 2214 User Manual

Application

The 2214 Series Pneumatic Room Thermostats are
designed for applications requiring separate control
points due to varying occupancy or seasonal loads.
They are particularly well suited to day/night control in
buildings such as schools and hospitals.

These thermostats have a serrated thumb wheel for
setpoint adjustment. They utilize dual bimetals and are
available in both direct and reverse acting models. One
temperature (day) is controlled when the main
pressure is 15 to 17 psig, and the other temperature
(night) is controlled when the main pressure is 21 to
25 psig. Both control points are adjustable and either
may be set to control higher or lower than the other,
using a ball feedback system and a 2:1 relay.
Thermostat covers are available in various styles to
meet particular requirements. Cover options include
models with a setpoint scale and a thermometer, a
setpoint scale only, a thermometer only, or blank. An
external setpoint adjustment cover is available on
some models, or can be field-installed on covers where
desired.

Features

• Factory-calibrated, stainless steel ball-in-seat

provides pneumatic feedback for stable, linear
operation.

• Separate factory-calibrated night bimetal and

setpoint dial, with fixed 4 °F night throttling range for
accurate “night” operation.

• Snap-acting (not gradual) changeover from “day” to

“night” operation and vice versa.

• Easy-to-use throttling range adjustment and

recalibration.

• Adjustable (patented) bimetal shows actual

throttling range in both °F and °C. Adjustable 2 to
12 °F (1 to 6.7 °C).

• Leak-proof, self-closing branch gauge tap.

2214 Series

Day/Night Pneumatic Room Thermostats

General Instructions

Full Dial Cover Shown
(Covers must be ordered
separa t el y ex c ep t as no ted . )

SPECIFICATIONS

Action: Proportional.
Setpoint Range:

Day, 55 to 85°F (13 to 29°C)
Night, 50 to 80°F (10 to 27 °C).

Throttling Range:

Day, Adjustable 2 to 12 °F
Night, Adjustable 3 to 5 °F.

Supply Air Pressure:

Below 17 psig, Operates at day setpoint.

Above 21 psig, Operates at night setpoi nt.
Maximum Air Pressure: 30psig.
Main Air Consumption: 30 scim at 16 psig; 43 scim at

25 psig.
Calibr a ti o n P o int: 9 psig branch line pressure when
ambient equals set point (factory-set).
Day/Night Indexing: Remot e, by change in main air
pressure.

Setpoint Adjustment: Ser rated thumbwheel.
Construction:

Mechanical Components, Di e cast al umin um, stai nless

steel, and glass-filled nylon.

Diaphragm, Fabric-reinforced Neoprene .

Air Lines, Connect to ther m ostat nipples with

spring-reinforced plastic tubes.

Branch Connections, Equipped with internal fiters.

Environment

Humidity: 5 to 95% relative humidity, non-condensing.
Locations: NEMA Type 1.

Printed in U.S.A. 8/08 © Copyright 2008 TAC All Rights Reserved. F-24577-3

ORDERING DATA

Table-1 Model Chart — Thermostats.

Wholesale

Number

2214-121 T23-301

2214-131

2214-122 T24-301

2214-132

a

These models include factory-installed 20-712 dial stop kits.

Replaces

a

T23-3011

a

T24-132

Model

Day/Night

Action

Direct/

Direct

Reverse/

Reverse

Includes (2) 1/4"x 3/16"
tubing reducer s, 20-693
tubing, 20-714 wall plate,
20-711 mounting plate, and
mounting screws.

Description

Table-2 Model Chart — TAC Uni-Kits®.

Wholesale

Number

2214-521

2214-522

2214-621 T23-301

2214-622 T24-301

a

These models include factory-installed 20-712 dial stop kits.

Replaces

a

T23-3011

a

T24-3011

Model

Action Description

Includes thermostat with

Direct/

Direct

stops, 21-933 full dial cover
with bl ank cover conversion,
and 22-022 conversion ki t.

Includes thermostat, 22-1033

Reverse/

Reverse

full dial cover with blank cover
conversion, and 22-023
conversion kit.

Table-3 Covers.

Wholesale

Number

Replaces

Model

21-923 C1-42
22-923 C1-46

Color Material

Satin Chrome

Metal

Dial

Markings

55 to 85 °F

Plastic22-823 C1-47 Beige

22-1023 C1-48 Euro-white 10 to 30 °C

a

21-928

a

22-928

a

a

22-1028

21-933 C3-42
22-933 C3-46

C2-42
C2-46

Satin Chrome

C2-47 Beige
C2-48 Euro-white

Satin Chrome

Metal

Plastic22-828

Metal

Blank Concealed

55 to 85 °F

Plastic22-833 C3-47 Beige

22-1033 C3-48 Euro-white 10 to 30 °C

a

21-939

a

22-939

a

a

22-1039

21-943 C5-42
22-943 C5-46

C4-42
C4-46

Satin Chrome

C4-47 Beige

Metal

55 to 85 °F

Plastic22-839

C4-48 Euro-white 10 to 30 °C

Satin Chrome

Metal

Plastic22-843 C5-47 Beige

22-1043 C5-48 Euro-white

21-948 C6-42
22-948 C6-46

Satin Chrome

Metal

Cooler - Warmer Yes No

Plastic22-848 C6-47 Beige

22-1048 C6-48 Euro-white

a

21-957

a

22-957

a

a

22-1057

a

21-960

a

22-960

a

a

22-1060
2890-010
2890-011

2890-013

a

a
a
a
a

Thermostat covers with concealed setpoint adjustment, and thermostat cover kits inlude setpoint adjustment cover 21-800 (black) or 21-801 (Euro-white).

C11-42
C11-46

Satin Chrome

C11-47 Beige

Metal

Plastic22-857

None Concealed

C11-48 Euro-white
C14-42
C14-46

Satin Chrome

C14-47 Beige

Metal

Plastic22-860

Blank Concealed

C14-48 Euro-white

Kit
Kit

Satin Chrome

Kit Beige

Metal

55 to 85 °F

or Blank

Plastic2890-012

Kit Euro-white 10 to 30 °C or Blank

Setpoint

Adjustment

Yes

Yes

Concealed

Yes

or

Concealed

Thermometer

(External)

(External)

(Internal)

No

Yes

Yes

Yes

No

2 © Copyright 2008 TAC All Rights Reserved. F-24577-3

Table-4 Accessories.

Wholesale

Number

20-676 10-18 Aspirating box, stainless steel
20-695 10-15 Aspirating box, satin finish
20-707 10-53 Metal thermostat guard
20-712 10-59 Internal stop kit
20-715 10-62 Clear c over thermostat guard
20-850 — Thermostat mounting plate
20-881 N2-4 Thermo stat cali bra t io n wren c h
21-473 10-73 Drywa ll mounting bracket
21-800 10-72 Setpoint adju stment cover (black)
21-801 10-81-48 Setpoint adjustment c over (Euro-white)
21-876 10-76 Opaque cover ther mostat guard
22-022 — Thermostat conversion kit
22-023 — Thermostat conversion kit
22-138 MCS-GA Branch tap gauge adaptor

900-002 — Thermostat calibration kit

Replaces

Model

Description

TYPICAL APPLICATIONS
(Piping Diagram)

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 wi ll affect the accuracy of the
thermostat.

• Avoid install ing the th ermostat on ou tside wall s. If su ch a

location is necessary, mount the thermostat on an
insulated back plate (accessory it em ).

• Mount thermostats

been finished.

Locate the thermostat where it will be exposed to an
unrestricted circulation of air, which represents the average
temperature of the controlled space.

only after the wall surfaces have

Mounting

Standard M ounting Optio ns

1. Mount the thermostat according to the applicable f igure
(Figure-2 throug h Figure-8). See Fig ure-10 for mounting
dimensions.

2214 Series
Thermostat

M B

Controlled
Device

M

16 psig Day

25 psig Night

Main Air

Figure-1 Typical Application.

INSTALLATION
Inspection

Inspect the package for damage. If damaged, notify the
appropriate carrier immediately. If undamaged, open the
package and inspect th e device for obvious damage. Return
damaged products.

Requirements

• Tools (not provided):

– Appropriate sc rewdriver for mounting the thermosta t
– 20-881 Thermostat cal ibration and cover sc rew

wrench (or 1/16” and 1/4” hex wrenches)

• Training: Installer must be a qualifi ed, experienced

technician

• Appropriate accessories

• Piping diagrams

1/4 x 3/16 in. Barbed Coupling

(included with thermostat)

6 in. Tube Assembly

(order separately)

21-611

for Plastic Tubing

20-693

with Eyelets

(included with

thermostat)

¡

F

¡

1

C

2

6

5

2

2

Cover

Mounting Screws

(included with thermostat)

Figure-2 Flush Mount ing of Thermostat,

Using Drywall Mounting Bracket.

20-714

Wall Plate

(included with

thermostat)

Thermostat

Polyethylene

Tubing Air Supply

Branch

Main

21-473

Drywall Mounting

(order separately)

F-24577-3 © Copyright 2008 TAC All Rights Reserved. 3