T.a.c 2216 User Manual

Application

The 2216 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, hospitals, and shopping
malls.

These thermostats have a serrated thumb wheel for
setpoint adjustment. They are direct acting and utilize
dual bimetals for day and night control. One
temperature (day) is controlled when the main
pressure is below 17 psig (16 psig normal operating
pressure), and the other temperature (night) is
controlled when the main pressure is above 21 psig
(25 ps ig normal operating pressure). A switching lever
on the thermostat allows manual indexing to the day
control point when the main air pressure is in the night
mode. Both control points are adjustable and either
may be set to control higher or lower than the other.
These thermostats use a ball feedback system and a
2:1 relay for accuracy and stability. For unit ventilator
applications, these thermostats may be re-configured
as three-pipe thermostats, in which case pressure at
the “R” port is 0 psig during day operation and equals
main air pressure (typically 25 psig) during night
operation. Thermostat covers are available in various
styles to meet particular requirements.

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.

2216 Series

Day/Night Pneumatic Room

Thermostats with Local Indexing

General Instructions

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

SPECIFICATIONS

Action: Direct, 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 ni ght setpoint.
Maximum Air Pressure: 30 psig.
Main Air Consumption: 30 scim at 16 psig; 43scim 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: Remote, by changes in main air
pressure, or local, with switching lever.

Setpoint Adjustment: Serrated thumbwheel.
Construction:

Mechanical Components, Die cast aluminum, stainl ess

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-condensin g.
Locations: NEMA Type 1.

Printed in U.S.A. 8/08 © Copyright 2008 TAC All Rights Reserved. F-24578-3

ORDERING DATA

Table-1 Model Chart — Thermostats.

Wholesale

Number

2216-126 T27-301

2216-136

a

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

Replaces

a

T27-3011

Model

Day/Night

Action

Direct/

Direct

Includes (2) 1/4" x3/16"
tubing reducers, 20-693
tubing, 20-714 wall plate,
20-711 mounting plate, and
mounting screws.

Description

Table-2 Model Chart — TAC Uni-Kits®.

Wholesale

Number

2216-526 T27-3011

Replaces

Model

Action Description

Includes thermostat with

Direct/

Direct

20-712 dial stop kit, 21-933
full dial cover with blank cover
conversion, and 22-022
conversion kit.

Table-3 Covers.

Wholesale

Number

Replaces

Model

Color Material

Dial

Markings

21-923 C1-42 Satin Chrome Metal 55 to 85 °F

22-1023 C1-48 Euro-white Plastic 10 to 30 °C

a

21-928

22-1028

a

C2-42 Satin Chrome Metal
C2-48 Euro-white Plastic

Blank Concealed

21-933 C3-42 Satin Chrome Metal 55 to 85 °F

22-1033 C3-48 Euro-white Plastic 10 to 30 °C

21-939

22-1039

a

a

C4-42 Satin Chrome Metal 55 to 85 °F
C4-48 Euro-white Plastic 10 to 30 °C

21-943 C5-42 Satin Chrome Metal

22-1043 C5-48 Euro-white Plastic

21-948 C6-42 Satin Chrome Metal

Cooler - Warmer Yes No

22-1048 C6-48 Euro-white Plastic

a

21-957

a

22-1057

a

21-960

a

22-1060

2890-010
2890-013

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 Satin Chrome Metal
C11-48 Euro-white Plastic
C14-42 Satin Chrome Metal
C14-48 Euro-white Plastic

None Concealed

Blank Concealed

Kit Satin Chrome Metal 55 to 85 °F or Blank Yes
Kit Eu r o-w h it e Plas tic 10 to 30 °C or Bla nk

Setpoint

Adjustment

Yes

Yes

Concealed

or

Concealed

Thermometer

(External)

(External)

(Internal)

No

Yes

Yes

Yes

No

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 k it
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 Drywall mounting bracket
21-800 10-72 Setpoint adjustment cover (black )
21-801 10-81-48 Setpoint adjustment cover (Eu ro-whit e)
21-876 10-76 Opaque cover thermostat guard
22-022 — Thermostat conversion kit
22-023 — Thermostat conversion kit

Replaces

Model

Description

Wholesale

Number

Replaces

Model

Description

22-138 MCS-GA Branch tap gauge ad aptor

900-002 — Thermostat c alibration kit

2 © Copyright 2008 TAC All Rights Reserved. F-24578-3

Table-4 Accessories. (Continued)

TYPICAL APPLICATIONS
(Piping Diagram)

2

2216 Series
Thermostat

M

16 psig Day

25 psig Night

R

M B

1

Main Air

1 Manual indexing lever for manual

override. Lever is reset remotely.

2 Optional connection: third port, "R", is

provided for connection in a three-pipe
application, typically for unit ventilators.

Figure-1 Typical Application.

INSTALLATION

To Pneumatic/Electric
Switch on Unit
Ventilator Subpanel
(Typical)

2

Controlled
Device

Mounting

Standard Mounting Options

1. M ount the thermostat according to the applicable figure
(Figure-2 through Figure-8). See Figure-10 for mount ing
dimensions.

1/4 x 3/16 in. Barbed Coupling

21-611

for Plastic Tubing

(included with thermostat)

20-693

6 in. Tube Assembly

with Eyelets

(included with

thermostat)

Cover

(order separately)

¡

F

¡

1

C

2

6

5

2

2

20-714

Wall Plate

(included with

thermostat)

Thermostat

Polyethylene

Tubing Air Supply

Branch

Main

21-473

Drywall Mounting

(order separately)

Inspection

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

Requirements

• Tools (not provided):

– Appropriate screwdriver for mounting the thermostat
– 20-881 Thermostat cal ibration and cover screw

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

• Training: Installer must be a qualified, experienced

technician

• Appropriate accessories

• Piping diagrams

Location

Caution:

• Do not locat e the the rmostat nea r sources of heat or cold,

such as lamps, motors, sunlight, or conceal ed ducts or
pipes. Doing so wil l affect the acc uracy of the t hermostat.

• Avoid install ing th e thermost at on out si de wall s. If such a

location is necessary, mount the thermostat on an
insulated back plate (accessor y 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 Screws

(included with thermostat)

Figure-2 Flush Mounting of Thermostat,

Using Drywall Mounting Bracket.

Polyeth ylene Tubing

Air Supply

Pre-plumbed

Branch

Main

Electrical Box

20-693

6 in. Tube Assembly with Eyelets

(included with thermostat)

Thermostat

¡

F

¡

1

C

2

6

5

2

2

Wall

20-850 Plate

(2) Screws for Electrical

Box Mounting

Cover

(order separately)

(2) #6 Self-Tapping

Screws

Figure-3 Flush Moun ti ng of Thermostat, Using 20-850 Plate

and Pre-Plumbed Electri cal Box.

F-24578-3 © Copyright 2008 TAC All Rights Reserved. 3