Schneider Electric TK-6024, TK-6124, TK-8024, TK-8124 Data Sheet

APPLICATION

For proportional temperature control of pneumatic valves and actuators to maintain air or liquid temperatures in duct, plenum chambers, liquid lines, tanks, etc. May also be used as a low limit thermostat.

SPECIFICATIONS

Thermostat: Proportional two pipe type. Thermostats are

ambient compensated.

Sensing Element: Remote liquid-filled copper. Control Dial Range: -20 to 240°F (

as -20 to 120°F, reverse side of dial 100 to 240°F. Throttling Range: Adjustable 3 to 35°F/10 kPa) change in output, factory set at 5°F (3°C). Output Air Signal: 0.5 psig (3.4 kPa) to supply air pressure

-0.5 (-3.4 kPa).

Action: See Table 1. Ambient Limits:

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

non-condensing. Case Operating, 40 to 150°F (4 to 65°C). 10 to 98% R.H., non-condensing. Bulb, 310°F (1

54°C) maximum. 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: 1/8" FNPT for main, branches and

gauges (not included).

AL-362 Air Consumption for Sizing Air compressor: 0.008 scfm

l/s).

(3.8 m

Air Capacity for Sizing Air Mains: 16 scim (4.4 ml/s). Mounting: Upright position on a wall or vertical flat surface. Bulb Dimensions: See Table 1. Capillary Length: 6’ (1.8 m). Case Dimensions: 5-13/16" high x 6-3/16" wid e x 4" deep

mm x 157 mm x 102 mm).

(148

ACCESSORIES

AL-362 Stem mounted back connected 0-30 psi gauge AT-201 3/8" x 9-1/2" with 3/4" MNPT copper bulb well

AT -203 3/8" x 9-1/2" with 3/4" MNPT stainless steel bulb

AT-206 3/8" x 4-1/2" with 1/2" MNPT copper bulb well AT-208 Duct mounting kit AT-209 Liquid line or tank mounting kit AT-211 Bulb shield AT-539 Pilot pressure kit TOOL-95 Pneumatic calibration tool kit (required for use

ires AT-209

requ

equires AT-209

well r

as low limit thermostat)

-29 to 115°C). Shipped psi (2 to 19°C/69

TK-6024, TK-6124, TK-8024,

TK-8124

Pneumatic Bulb Thermostats

General Instructions

MAINTENANCE PARTS

AT-520-011 Relay repair kit AT-528 Pilot restrictor kit DYDK-77-031 Thermal element for TK-8X24 DYDK-99-011 Thermal element for TK-6X24

Figure-1 Piping Connections.

Table-1 Specifications.

Bulb

Part Number Action

TK-6024

TK-8024 Averaging

TK-6124

TK-8124 Averaging

Direct Acting (DA) - increase output pressure on temperature rise. Reverse Acting (RA) - Decrease output pressure on temperature rise.

Style

Straight

Dimensions

in (mm)

3/8 x 4-5/8 (9.5 x 117)

3/32 x 8’

(2.4 x 2.4 m)

3/8 x 4-5/8 (9.5 x 117)

3/32 x 8’

(2.4 x 2.4 m)

PRE-INSTALLATION Inspection

Visually inspect the carton for damage. If damaged, notify the appropriate carrier immediately. Visually inspect the device for obvious defects. Return damaged or defective products.

Required Installation Items

• Tools (not provided):

Appropriate drill, drill bits and screwdriver for mounting screws

Needle nose pliers or 3/16" open-ended wrench to hold dial shaft

• Appropriate Accessories

• Mounting screws and appropriate fittings (not provided)

INSTALLATION

Caution: Installer must be a qualified, experienced technician. Make all connections in accordance with the job piping diagrams, local and national codes. Avoid locations near steam or hot water coils or pipes, or wherever radiant heat will affect the bulb or capillary tube.

THERMOSTAT MOUNTING

Mount the thermostat in an upright position on a wall or vertical flat surface that does not vibrate.

Three (3) mounting holes 3/16" (5 mm) provided on case.

BULB MOUNTING

Table-2 Liquid Line and Tank for TK-6X24.

Part Number Description Mt. Fitting

AT-201 AT-203

AT-206 Copper bulb well 1/2" MNPT

AT-209

Requires AT-208.

Recommended installation is with a bulb well.

Copper bulb well

Stainless steel bulb

well

Bulb mounting kit 3/4" MNPT

3/4" MNPT

Insertion

Size

1/2" dia.

OD (9-1/2”

long

1/2" dia.

OD 4-1/2"

long

Length of

bulb

Figure-2 Mounting Dimensions.

Figure-3 Bulb Well Installation.

Table-3 Application Limitations at 250°F Fluid Temp.

(Max. 350°F)

Part Number

AT-201 11 250 AT-203 20 500 AT-206 11 250 AT-209 4 150

Max. Recommended

Velocity (FPS)

Max. Recommended Static Pressure

(psig)

Installation of TK-6X24 Bulb into AT-206 Bulb Well

1. Install AT-206 bulb well into 1/2" FNPT opening.

2. Place packing (included with AT-206) over bulb support section and insert bulb into well.

3. Push packing into nut on well using a screwdriver.

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