Honeywell T7460H User manual

INSTALLATION AND

OPERATING INSTRUCTIONS

T7460H SETPOINT SELECTOR

DESCRIPTION

The T7460H setpoint selector is a temperature selector

equipped with operating mode switch, room temperature

sensor, and error indicator LED. It is supported by the following

control systems:

•MCR 35, 36, 40, 200

•DHC 23

•Excel 500

Not for MCR 200-61 large installations and MCR 200-62.

INSTALLATION OF THE T7460H

Figure 1: Locations for installation

1. Remove housing cover of the setpoint selector.

Figure 2: Removing housing cover

2. Screw setpoint adjuster to the under plaster distribution box.

Figure 3: Dimensions of housing

3. Connect the cable coming from the controller.

Figure 4: Wiring diagram

Wiring of the terminals:

1 Setpoint 4 not used

2 + 10 V 5 Room sensor

3Gnd 6 LED

4. Return cover to housing by placing top edge against back-

plate and snap lower part of cover onto housing (2).

Figure 5: Replacing of housing cover

OPERATION AND FUNCTIONS

Figure 6: Operating devices and indicators

1 Operating mode switch

2 LED (error indicator)

3 Temperature selector with scale

4 Temperature sensor (to the side)

T7460H in operation with systems

MCR 35, 36, 40, 200, DHC 23 and EXCEL 500

Operating mode switch

The operating mode switch allows for the selection of three

different functions:

Position Operating

mode

Function

Auto Automatic Heating is controlled by timer.

Daytime Only desired value for day applies.

Switch-off Heating is switched off. In the event of

danger of frost, the heating pump and

the burner are automatically switched

on.

Note

The operating mode switch of the T7460H does not in

any way influence the domestic hot water program.

Temperature selector

The desired value can be changed only if the

operating mode switch is set to positions Auto or

respectively.

Range: –7...+7 °C

Mid-point position: 0 °C

(in relation to controller settings)

LED

Function in operation with MCR 200: The LED is

on if the controller has detected an error.

The LED may also be used with other systems.

The input voltage is

5 – 24 V AC or DC.

Control Products

Honeywell AG

Böblinger Strasse 17

D-71101 Schönaich

Phone: (49) 7031 637 01

Fax: (49) 7031 637 493

http://europe.hbc.honeywell.com

Manufacturing location certified to

Subject to change without notice. Printed in Germany

7157408 EN1H-0154GE51R1102

T7460H in operation with Excel 500 System

If the T7460H is operated with the Excel 500 System, the

temperature range and options of the operating mode switch

can be chosen to suit your needs.

In such an installation, the feedback control system of the Excel

System provides information on the current configuration of the

switch.

TECHNICAL DATA

Sensor device: NTC thermistor

Resistance: 20 kOhm at 25 °C

Temperature range: –15...+40 °C

Dimensions (H×W×D): 103 ×98 ×28 mm

Installation: Installation on wall or

on standard 60 mm distribution box

Max. operating

temperature / humidity: 0...50 °C / 5...95% humidity

Max. storage

temperature / humidity: –35...+70 °C / 5...95% humidity

Electric connection: Terminals for max. 1.0 mm2

wire diameter

Protection class: IP 30, DIN 40 050

or IEC 144

Technical data regarding the NTC thermistor:

see publication GE 3R-1106.

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