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: [phone]
Fax: [phone]
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.