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#46543 User Guide

HeatLink Digital Thermostat

L646543

November 6, 2007

Page 2

#46543 User Guide

Mounting Hole

Wiring Terminals

Back Terminal Plate

Wiring Hole

Screw Cover 

(removed)

Center Screw

Front Control Panel

Installation

Remove the Screw Cover.

Remove the Center Screw to separate the Front Control Panel and 
Back Terminal Plate.

Mount the Back Terminal Plate using the supplied screws.

Pull the Wiring through the Wiring Holes.

Loosen the Wiring Terminals screws, connect the wires to each of the 
terminals as per the wiring diagram, and tighten the screws.

Finish the install by placing the Front Control Panel on to the Back 
Terminal Plate, fasten the Center Screw, and replace the Screw Cover.

Mounting Location

• Mount the thermostat at 5' (1.5 m) from the fl oor
• Mount on inner walls only, and at least 2' (0.6 m) away from any outer 

wall. Avoid entrances.

• Mount away from any direct heat sources like: air vents, radiators, and 

lights.

• Avoid Moisture, it is damaging to electronics, so avoid installing 

in areas that would contain high humidity or condensation (e.g. 
bathrooms or greenhouses).

• Do not cover or enclose, allow for proper air circulation, to get a good 

measurement of the current air temperature.

Auto-setback mode

(Requires a timer setback signal)

In auto-setback mode, the 46543 operates automatically between 
comfort mode (

 blinking) and setback mode (

blinking) 

according to the schedule of a timer thermostat (46643 or 46673).

Freeze Protection mode

In Freeze Protection mode: instead of simply turning the system 
off, this thermostat prevents freezing by maintaining a 

6°C (43°F) 

minimal temperature. This mode is ideal for unoccupied buildings.

Setback mode

In setback mode, the temperature is set lower to conserve energy, the 
default is 

17°C (63°F)

. This mode is ideal for areas that are unoccupied. 

To change the setback temperature (while in setback mode):

PRESS

OR

to change the setpoint to a lower 
(-) or higher (+) temperature

PRESS

The Current Setpoint Temperature will blink 
indicating that it can be changed

PRESS

to confi rm the desired setpoint

The Measured Temperature will 
return after 5 seconds

Comfort mode

In comfort setpoint mode, the temperature is set to a comfortable level, 
the default is 

21°C (70°F)

. This mode is ideal for occupied areas. To 

change the comfort setpoint temperature (while in comfort mode):

PRESS

OR

to change the setpoint to a lower 
(-) or higher (+) temperature

PRESS

The Current Setpoint Temperature will blink 
indicating that it can be changed

PRESS

to confi rm the desired setpoint

The Measured Temperature will 
return after 5 seconds

FREEZE PROTECTION

COMFORT MODE

AUTO-SETBACK MODE

SETBACK MODE

PRESS

OR

To cycle through the modes

User Operation

In all modes, if a fl oor sensor is installed,    blinking indicates that the fl oor temperature is outside the limits set by the 

FL

 and 

FH

 parameters.

FH

FH

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