Schneider Electric TK-1801, TK-1811, TKR-1811 Catalog Page

APPLICATION

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.

SPECIFICATIONS

Thermostat: Proportional two pipe type. Thermostat

maintains constant branch pressure when temperature is between dial setpoints.

Sensing Elements: Two bimetals. Control Dial Range: Two independent with stops, see

able 1.

rottling Range: Adjustable 2 to 10 °F/10 psi change in

branch pressure when temperature is not between dial setpoints, factory set at 4 °F/10 psi. Output Air Signal: 0.5 psig (3.4 kPa) to supply air pressure

-0.5 psig (-3.4 kPa).

ro Energy Band Pressure: Adjustable 5 to 11 psig (34 to

sig (55 kPa).

Compressor

x 64 mm).

76 kPa) factory set at 8 p

Action: See Table 1. Ambient Limits:

Shipping, -40 to 150 °F (-40 to 65 °C). 0 to 98% R.H.,

non-condensing Operating, 20 to 115 °F (-7 to 46 °C). 10 to 98% R.H.,

non-condensing Supply Air Pressure: Clean, oil free, dry air required (reference EN-123).

Nominal, 20 psig (138 kPa).

Minimum, 15 psig (103 kPa).

Maximum, 30 psig (207 kPa). Air Connections:

Main (Black), 5/32" dia. spring reinforced plastic tube.

Branch (white), 5/32" dia. spring reinforced plastic tube. Air Consumption for Sizing Air

TK-18x1, TKR-18x1, 0.012 scfm (5.7 ml/s).

TK-18x1-600 (Aspirated models), 0.028 scfm (13.2

ml/s).

Air Capacity for Sizing Air Mains:

TK-18x1, TKR-18x1, 16 scim (4.4 ml/s).

TK-18x1-600, 56 scim (15.3 ml/s). Cover: Beige plastic with brushed bronze metal insert as

andard exce

st brushed stainless steel covers.

Mounting: Upright position on wall. Dimensions:

TK-18x1, TKR-18x1, 4-3/8" high x 2-3/4" wide x 1-5/8"

dee

TK18x1-600, Wall box — 5" high x 3-1/2" wide x 2-1/2"

deep (127 mm x 89 mm

Cover — 5-1/2" high x 4" wide (140 mm x 102 mm).

pt aspirated models. Aspirated models have

p (111

mm x 70 mm x 43 mm).

TK-1801, TK-1811

TK-1801, TKR-1811

Pneumatic Zero Energy Band

Room Thermostats

General Instructions

Figure-1

Table-1 SPECIFICATIONS.

55 to 85

TK-1801

TKR-1801

TK-1811

TKR-1811

Part Number

Dial Range**

°F 13 to 29 °C

TK-1801-116

TK-1811-116

Application

N.O. Heat N.C. Cool

N.C. Heat N.O. Cool

*Direct Acting (D.A.) - Increase output pressure on temperature rise. Reverse temperature rise.

**Control di built-in dial stops can limit high and/or low setting of each dial.

Acting (R.A.) - Decrease output pressure on

Control Action*

Direct

Reverse

al marked °F on one side and °C on the other side;

Table-2 TKR-18X1 INCLUDES:

Quantity Description

1 TK-18X1 thermostat

1 Blank cover insert

1 Cover insert with setpoint cutout

2 1/4" x 5/32" barbed fitting

2 5/32" x 5/32" barbed fitting

2 1/4" O.D. x 2" Tygon tubing

2 1/4" x 1/4" compression to tubing fitting

1 5/64" Allen head cover screw

1 5/64" Allen head wrench

ACCESSORIES

AT-65 Series Cover inserts AT-85 Series Digital thermometer cover kit, plastic cover AT-95 Series Digital thermometer cover kit, metal cover AT-504 Plaster hole cover AT-505 Surface mounting base AT-506 Pneumatic wall box fitting AT-509 Wall box required for aspirated thermostats AT-536 Pneumatic wall thermostat conversion kit AT-546 Auxiliary mounting base AT-1100 Series Thermostat guards AT-533-101 Adapter 1/4" plastic to 5/32" plastic AT-533-127 Adapter 3/16" copper or 1/4" copper with 1/4"

PKG-1093 Digital thermometer battery replacement kit TOOL-15 Spanner head driver TOOL-80-1 Changeover/dial TOOL-95-1 Pneumatic calibration tool kit

coupling (not included)

solder

to 5/32" plastic

PRE-INSTALLATION

The thermostats are shipped with mounting screws. Wall fittings must be ordered separately.

Before installation, make a visual inspection of the thermostat carton for obvious signs of damage.

Air Connections:

Two plastic tubes reinforced with a coil spring are coded M and B. The M (black) designates the supply main and the B (white) designates the controlled branch line. See Figure 1.

Figure-2

Options (For quantities of 24 or more of same part number)

Add “dash number” (-XXX) s

uffix to base part number for

desired option. For metal covers, spcify TK2-18X1-XXX.

Figure-3 Typical Mounting Thermostat to AT-506 Wall Box

Fitting.

INSTALLATION

Requirements

Locate the thermostat where it will be exposed to unrestricted circulation of air which represents the average temperature of the controlled space. Do not locate the thermostat near sources of heat or cold such as lamps, motors, sunlight, or concealed ducts or pipes.

The thermostat fitting is available for either flush or surface mounting. See Fig for surface mounting on all wall surfaces and flush mounting on plastered or stud walls.

ures 3 and 4. Use the AT-506 wall box fitting

Procedure

To mount a thermostat on an AT-506 wall box fitting, refer to Figure 3.

1. Remove and discard the cardboard cover plate on the wall box. (The cardboard cover protects the fitting while the wal is being plastered.)

2. Fasten the mounting plate to the wall box with the two flat headscrews provided. Make sure it is square with the wall before tightening the screws.

3. f the thermostat tubing is too long for easy coiling in the

l box, it can be cut to length. Cut the tubing at a 45o

wal angle for ease of inserting the tubing into the “O” ring seal. Be sure that the coil spring is cut flush with the tubing.

4. Remove and discard the short piece of tubing from the connector head of the

5. Insert the main (black) plastic tubing into the left-hand hole in the connector head. Insert the branch line (white) tubing into the right-hand hole in the connector.

Insert tubes at least 1/4". Do not use any lubricant on the plastic tubing.

6. Fasten the thermostat to the mounting plate with the three Allen mounting screws provided. Tighten the screws evenly.

wall box.

Figure-5

For installation of external setpoint, refer

to figure 6

1. Insert the knob through hole in cover. The knob should rest on the calibration screw with the slots aligned with the dial clamp screws.

2. Insert screw supplied with the knob into the center of the knob and tighten, being careful not to disturb the setting of the calibration screw.

To mount a thermostat on an electrical switch box, refer to Figure 4

1. Attach the mounting plate to the switch box with the two flathead screws provided. Be sure the mounting plate is vertical.

2. Slightly rotate the tubes back and forth, and push firmly onto the fittings. (See Figure 5)

Fasten the thermostat to the mounting plate with the Allen

3. head screws provided and tighten evenly.

Figure-4 Typical Mounting Thermostat to Electric Box.

Note: The knob must be removed in order to remove thermostat cover or recalibrate thermostat.

Figure-6

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