Johnson Controls T2000 series Bedienungsanleitung

Installation Instructions T2000 Series

Issue Date July 1, 2003

Part No. 24-9902-18, Rev. — www.johnsoncontrols.com

T2000 Series Low Voltage Fan Coil Thermostats

Application

IMPORTANT: Use this T2000 Series

thermostat only as an operating control. Where

failure or malfunction of the T2000 Series thermostat

could lead to personal injury or property damage to

the controlled equipment or other property,

additional precautions must be designed into the

system. Incorporate and maintain other devices such

as supervisory or alarm systems or safety or limit

controls intended to warn of, or protect against,

failure or malfunction of the T2000 Series

thermostat.

The T2000ACx (Heat-Off-Cool) and T2000ECx

(On-Off) low voltage fan coil thermostats feature local

control of High, Medium, and Low fan speeds.

The plastic enclosure features a removable cover

imprinted with either a Fahrenheit or a Celsius scale,

providing direct access to the adjustable temperature

setpoint dial and control switches. The main

thermostatic element is a gas-filled bellows that drives

an integral snap-action two-position electrical switch.

The adjustable setpoint knob sits over the element on

a Printed Circuit Board (PCB) along with two terminal

blocks and two control switches. The PCB sits on the

PCB Support, which is hinged at the bottom to the

plastic base, swinging free at the top to provide easy

access during mounting and wiring.

Typical low voltage applications are:

•fan coil units

•electric heaters

•air handling units

T2000ACx-0C0

On the T2000ACx-0C0, switch positions HEAT, OFF,

and COOL provide separate temperature control in the

controlled space. A second switch controls the

LOW-MED-HIGH fan motor speeds.

T2000ECx-0C0

On the T2000ECx-0C0, switch positions provide ON

and OFF temperature control in the controlled space.

A second switch controls the LOW-MED-HIGH fan

motor speeds.

Installation

Install the T2000 where the occupant can read and

adjust the setpoint dial selector easily. Situate the

thermostat where the temperature is representative of

the general room conditions. Avoid installing the

T2000 near cold or warm air drafts, radiant heat, on an

outside wall, or in direct sunlight.

Parts Included

One T2000xCx-0C0 low voltage fan coil thermostat.

Mounting

Mount the T2000 Series thermostat to a

2 x 4 in. (51 x 102 mm) standard U.S. wallbox.

Follow the instructions for removing the cover and then

proceed to the Wallbox Mounting and the Wiring

sections.

Note: All T2000 Series models require two No. 6

mounting screws (not included).

Removing the Cover

To remove the cover from the base, insert a 1/8 in.

(3.2 mm) Phillips screwdriver into the retention screw

located in the center of the top of the cover. Loosen

(but do not remove) the Phillips head screw and gently

pull the cover away from the base until it is free.

(See Figure 1.)

1-2/3 (42.5)

5-1/4

(133)

3-15/32 (88)

HIGH

MED

HEAT

OFF

COOL LOW

Retention Screw

Figure 1: T2000xCF-0C0 Cover and Case

Dimensions, in. (mm)

2T2000 Series Low Voltage Fan Coil Thermostats Installation Instructions

Wallbox Mounting

To mount the T2000-base to the to standard

U.S. wallbox, refer to Figure 1 and Figure 2 and:

1. Depress the PCB support latch, located above the

temperature setpoint switch in the upper

right-hand corner of the PCB support, and gently

pushing downward, swing the top of the PCB

support away from the unit.

Note: The PCB support will remain attached at the

bottom of the base, providing access to the mounting

and wiring holes.

IMPORTANT: Do not remove PCB from the PCB

support. Removing the PCB from the PCB support

voids the product warranty.

Retaining Screw

Base

PCB Support

(Back)

3.28

(83.4)

PCB Support

Base Hinge

PCB Support

Base Latch Notch

PCB Support

Base Latch

Figure 2: T2000xCx-0C0 Base with PCB Support

Mounting Dimensions

2. Pull the wiring through the square hole in the

base.

3. Fasten the base to the wallbox using the two

vertical holes and two No. 6 screws (not provided)

4. Pull the wiring through the square hole in the PCB

support and gently snap the PCB support to the

PCB Support Base Latch.

5. Proceed to the Wiring section for the correct

configuration for the application and unit.

Note: The factory-calibrated T2000 thermostat

requires no field adjustment. Do not attempt

recalibration.

6. Reposition the cover and tighten the retention

screw.

Wiring

IMPORTANT: Make all wiring connections in

accordance with local, national, and regional

regulations. Do not exceed the T2000 Series

thermostat’s electrical ratings.

Model T2000ACx-0C0

Wiring terminal designations appear in Table 1. Wiring

connections for typical T2000ACx applications appear

in Figure 3 and Figure 4.

Table 1: T2000ACx-0C0 Wiring Terminals

Model T2000ACx-0C0

Terminal Number Connection

1Heating Valve +

2Common

3Heating Valve Common

4High Fan Speed

5Cooling Valve Common

6Low Fan Speed

7Medium Fan Speed

824 VAC Power

9Cooling Valve

24 VAC

All Wiring to be

Supplied by Installers

System:

HEAT-OFF-COOL

Fan:

HIGH-MED-LOW

345

LOW

HIGH

MED

HEAT (H)/

COOL (C)

Valve

Figure 3: Wiring the T2000ACx-0C0 for

Heating/Cooling Only: 2-Pipe System

with 3-Speed Fan Control

T2000 Series Low Voltage Fan Coil Thermostats Installation Instructions 3

24 VAC

System:

HEAT-OFF-COOL

Fan:

HIGH-MED-LOW

345

COOL

(C)

Valve

HEAT

(H)

Valve

LOW

HIGH

MED

All Wiring to be

Supplied by Installers

Figure 4: Wiring the T2000ACx-0C0 for

Heating/Cooling Only: 4-Pipe System

with 3-Speed Fan Control

Model T2000ECx-0C0

Wiring terminal designations appear in Table 2 Wiring

connections for typical T2000ECx applications appear

in Figure 5 and Figure 6.

Table 2: T2000ECx-0C0 Wiring Terminals

Model T2000-ECx-0C0

Terminal Number Connection

3Heating Valve Common

4High Fan Speed

5Cooling Valve Common

6Low Fan Speed

7Medium Fan Speed

824 VAC Power

24 VAC

COOL (C)

Valve

All Wiring to be

Supplied by Installers

LOW

HIGH

MED

System: ON-OFF

Fan:

HIGH-MED-LOW

345

678

Figure 5: Wiring the T2000ECx-0C0 for Cooling

Only: 2-Pipe System with 3-Speed Fan Control

24 VAC

All Wiring to be

Supplied by Installers

LOW

HIGH

MED

HEAT (H)/

COOL (C)

Valve

System: ON-OFF

Fan:

HIGH-MED-LOW

345Winter

Summer

Strap-on

Thermostat

678

Figure 6: Wiring the T2000ECx-0C0 for

Heating/Cooling Only: 2-Pipe System with 3-Speed

Fan Control and Automatic Changeover

Troubleshooting

For the ACx thermostat to function properly, the

Heat-Off-Cool switch must be fully in the desired

position. For the ECx thermostat to function, the

ON/OFF switch must be fully in the ON position.

Repairs and Replacement

Do not attempt to repair the T2000 Series thermostat.

In case of an improperly functioning control, contact

the nearest Johnson Controls® representative, and

specify the desired product code number. When

contacting the supplier for a replacement please state

the type/model number of the control located on the

data plate or cover label.

4T2000 Series Low Voltage Fan Coil Thermostats Installation Instructions

Technical Specifications

Product T2000ACC-0C0 Low Voltage Heat-Off-Cool Wallbox Fan Coil

Thermostat with Celsius Temperature Setpoint Scale

T2000ACF-0C0 Low Voltage Heat-Off-Cool Wallbox Fan Coil

Thermostat with Fahrenheit Temperature Setpoint Scale

T2000ECC-0C0 Low Voltage On-Off Wallbox Fan Coil Thermostat

with Celsius Temperature Setpoint Scale

T2000ECF-0C0 Low Voltage On-Off Wallbox Fan Coil Thermostat

with Fahrenheit Temperature Setpoint Scale

Power Requirements 24 VAC at 50/60 Hz, Class 2

Thermostat Switch Setpoint Range 50 to 85°F; (10 to 30°C)

System Switch ACx Models: Double-Pole, Triple Throw (DP3T)

ECx Models: Double-Pole, Double Throw (DPDT)

Fan Switch All Models: Double-Pole, Triple Throw (DP3T)

Low Voltage Control

Ratings

Current: 2 A 2 A, Non-Inductive

Power: 48 VA, Class 2

Ambient Operating

Conditions*

44 to 85°F; (7 to 30°C) 85% Noncondensing RH

Ambient Storage

Conditions*

-40 to 122°F; (-40 to 50°C) 85% Noncondensing RH

Dimensions 3.46 x 5.24 x 1.91 in. (88 x 133 x 49 mm)

Shipping Weight 0.55 lb (0.26 kg)

* Operating or storing this thermostat at temperatures outside the stated limits can result in damage to the bellows.

The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these

specifications, consult the local Johnson Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or

misuse of its products.

Controls Group

507 E. Michigan Street

P.O. Box 423 Published in U.S.A.

Milwaukee, WI 53201 www.johnsoncontrols.com

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