Technical Guide. Thermostats Air Conditioning

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I. DIGITAL THERMOSTATS

Perfect manufactured thermostats especially designed for domestic, industrial and commercial applications. Ideal for (heat or cold) temperature control of confined spaces.

They are highly sensitive and safe, and have a liquid-display digital thermometer for accurately monitoring room temperature.

• Base and fire-resistant cover

• One-piece design for easy installation with convenient wiring

• LCD display for a precise room temperature reading • System in “OFF” for opening all circuits

• Instant protection against overload and pulse

FEATURES

(D) = Type of Display :

With “D” : Digital Display Without “D” : Analog Display (ZZ) = Model

(Y) = Voltage : 2: 24VAC 1: 110VAC 0: 220VAC (X) = Series

(ET) = Product : Thermostat (K) = Manufacturer : K ET - (X) (Y) (ZZ) (D)

NOMENCLATURE

THERMOSTATS AIR CONDITIONING

thermostats are devices designed to maintain temperature at a particular point in a space or system. They can be electronic, digital and analog. They can open or close an electrical circuit depending on the temperature, keeping it within a set range or level. • They are designed for measuring or controlling the

temperature

• The simplest types have a bimetallic plate for opening or closing a circuit which activates or deactivates a compressor

• The most sophisticated models can function at microprocessor levels

• They have a wide range of applications in domestic, commercial and industrial refrigeration and AC systems

• Multiple mounting configurations • Easy and friendly use

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Reference

Type

Temperature

Range TemperatureΔ Temperature Sensor

Thermostat Fan Switch

Consumption

(With Load) Connection ProtectionType of

System Fan Energy Voltage Energy Voltage

KET-204D KET-214D

KET-224D ON - OFF

HIGH - MED - LOW

+10°C a +30°C (+50°F a +86°F) Aprox. ±0,5°C a ± 0,8°C (±1°F a ±2°F) Unipolar Gas Filled Bellows 1A 24VAC 115VAC 250VAC 6(2)A 24VAC 115VAC 250VAC 0,6VA 3VA 6VA Screw Terminals IP20 KET-205D KET-215D

KET-225D HEAT - OFF - COOL KET-206D

KET-216D KET-226D

HEAT - OFF - COOL - 4 TUBES

KET-220D ON - OFF

250VAC 250VAC

-KET-221D HEAT - OFF - COOL KET-701D

KET-711D

KET-721D COOL ONLY

8 Speeds ±0,5°C (±1°F) NTC Thermistor, Negative Temperature Coefficient (10k)

(0,8)A 115VAC 24VAC 220/230VAC 2(1)A 24VAC 115VAC 220/230VAC IP20 KET-702D KET-712D

KET-722D HEAT - OFF - COOL KET-703D

KET-713D KET-723D

HEAT - OFF - COOL - 4 TUBES

Reference

Casing LCD DISPLAY

Material Color Type Power Source Temperature _Range Δ Temperature Precision

KET-204D KET-214D KET-224D Fire-resistant Hard Plastic White LCD Display DC 5V± 5% +10°C a +50°C (+50°F a +99°F) ±0,2°C (±0,5°F) +10°C a +50°C (± 0,2°C) +50°F a +99°F (± 0,5°F) KET-205D KET-215D KET-225D KET-206D KET-216D KET-226D KET-220D _{+10°C a +40°C} (+50°F a +99°F) ±0,5°C (±1°F) +10°C a +40°C (± 0,5°C) +50°F a +99°F (± 1°F) KET-221D KET-701D KET-711D KET-721D Fire-resistant ABS Plastic DC 5V± 5% (+50°F a +86°F)+10°C a +30°C ±0,2°C (±0,5°F) +10°C a +30°C (± 0,2°C) +50°F a +86°F (± 0,5°F) KET-702D KET-712D KET-722D KET-703D KET-713D KET-723D KET-701D KET-220D

CONNECTION DIAGRAMS AND DIMENSIONS

Reference Connection Diagram Dimensions (mm)

KET-204D KET-214D KET-224D KET-205D KET-215D KET-225D KET-206D KET-216D KET-226D KET-200D KET-201D

1

2

3

4

5

6

M

1

2

3

4

5

6

7

M

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CONNECTION DIAGRAMS AND DIMENSIONS

Referencia Diagrama de Conexión Dimensiones (mm)

KET-701D KET-711D KET-721D KET-702D KET-712D KET-722D KET-703D KET-713D KET-723D

1

2

3

4

5

6

7

8

9

II. ANALOG THERMOSTATS

Perfect manufactured thermostats especially designed for domestic, industrial and commercial applications. They have a temperature control valve or an electric actuator for activating the cooling system, when a signal is generated after room temperature and adjusted temperature are measured and compared.

Low voltage room thermostats are used in self-powered generating systems of 750mV or 24VAC.

They are also used for temperature control of different areas of central air conditioned systems.

• Fire-resistant base and cover • Simple and innovative design

• Adjustable installation and convenient wiring • Manual knob for adjusting desired temperature • One-piece design for an easy installation • System in “OFF” for opening all circuits • No vibration or levelling problems • Available in vertical or horizontal models

• Connected with an internal and external sensor • They control temperature with high accuracy,

sensitivity and veracity

• Installation adaptable to wall, built-in, built on board or hidden places

• Application in: fan coil (direct expansion or chilled water), central A/C units, etc.

FEATURES

(XXXX) = Model

(ET) = Product : Thermostat (K) = Manufacturer : K ET - (XXXX)

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Reference

Type

Temperature

Range TemperatureΔ TemperatureSensor

Thermostat _SwitchFan

Consumption

(With Load) Connection ProtectionType of

System Fan Energy Voltage Energy Voltage

KET-230 ON - OFF

HIGH - MED - LOW +5°C a +30°C ±0,5°C a _±0,8°C Unipolar Gas_{Filled Bellows} 1A 250VAC 6(2)A 250VAC 6VA _TerminalsScrew -KET-231 HEAT - OFF - COOL

KET-444

- - +10°C a +32°C - - - 24VAC - - - -

-KET-631V KET-631H

KET-2000 ON - OFF

HIGH - MED - LOW

+10°C a +30°C ±0,5°C a _±0,8°C Unipolar Gas_{Filled Bellows}

1A

250VAC

6(2)A 250VAC 6VA

Screw Terminals

-KET-2001 HEAT - OFF - COOL

KET-2500 OFF - COOL. _{2 TUBES}

+10°C a +30 (+50°F a +86°F) ±1°C (±2°F) NTC Thermistor, Negative Temperature Coefficient (10 k) 220VAC IP20 KET-2501 HEAT - OFF - COOL, _{2 TUBES}

KET-2502 HEAT - OFF - COOL, _{4 TUBES}

KET-2700 ON - OFF

+10°C a +30°C ±0,5°C a _±0,8°C Unipolar Gas_{Filled Bellows} 250VAC KET-2701 HEAT - OFF - COOL

KET-0070 - -0°C a +5-0°C (+32°F a +122°F) -Capillary and unipolar sensor bulb in copper or stainless steel

20A 250VAC - - - IP54

KET-0071 _{(+32°F a +194°F)} 0°C a +90°C KET-0072 KET-0073 (-31°F a +95°F)-35°C a +35°C Reference Casing Material Color KET-230

Fire-resistant Hard Plastic

White KET-231 KET-444 KET-631V KET-631H KET-2000 KET-2001 KET-2500

Fire-resistant ABS Plastic with Standard UL94V-0 KET-2501

KET-2502 KET-2700

Fire-resistant Hard Plastic KET-2701 KET-0070 White or Black KET-0071 KET-0072 KET-0073 KET-230 KET-2000 KET-444 KET-2700 KET-631 KET-0072

90

139 38

CONNECTION DIAGRAMS AND DIMENSIONS

Reference Connection Diagram Dimensions (mm)

KET-230 KET-231 KET-444 Fan Motor Valve LIne h H C M O L H Cooling / Heating Valve FAN COOL Cold Anticipator Y G R SYS ON OFF FAN ON AUTO ON AUTO OFF COOL SYSTEM FAN 114 72 29 50 10 50 10 60 15 60 15 70 21 70 21 80 27 80 27 90ªF 32ªC 90ªF 32ªC Fan Motor Valve Line h H M L

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CONNECTION DIAGRAMS AND DIMENSIONS

Reference Connection Diagram Dimensions (mm)

KET-2000 KET-2001 KET-2500 KET-2501 KET-2502 Fan Motor Fan Motor LIne LIne Valve Valve SW1 T SW2 L M H C O N L 1 2 3 6 5 4 SW1 T SW2 L M H C O H N L 132 87 39 132 87 42 L N HIGH MED LOW COM C H GO Rx M Valve Sensor Ext. Cooling Fan HIGH MED LOW N L L N HIGH MED LOW COM C H GO Rx M Valve Sensor Ext. Cooling / Heating Fan HIGH MED LOW N L L N HIGH MED LOW COM C H GO Rx M Sensor Ext. Cooling Heating Fan Valve Valve HIGH MED LOW N L 1 2 3 6 5 4

CONNECTION DIAGRAMS AND DIMENSIONS

Reference Connection Diagram Dimensions (mm)

KET-2700 KET-2701 KET-0070 KET-0071 KET-0072 KET-0073 122 87 42 Fan Motor 6 5 4 2 3 _Line T H M L C O N L 6 5 4 1 2 3 T H M L H O C N L 3 2 1 L N 62+1 -90.5+1 -42 Valve Valve Fan Motor Line