#46543 User Guide
HeatLink Digital Thermostat
L646543
November 6, 2007
Page 1
Parameter Display
Temperature Unit
Decimal
Degree Symbol
Indicates Temperature Display
is measured
Temperature Display
Heat Demand Indicator
Cooling Demand Indicator
FREEZE PROTECTION
COMFORT MODE
AUTO-SETBACK MODE
SETBACK MODE
Screw Cover
(not a button)
Left Minus Button
Right Plus Button
OK button
The
46543 HeatLink Digital Thermostat
is a 24Vac electronic thermostat
designed to provide accurate temperature control of hydronic fl oor heating
systems. Features include:
• Large 2" (50 mm) LCD display, with a large temperature display.
• Proportional plus Integral (PI) controlled temperature regulation.
Proportional moves quickly to the desired setpoint and slows down when
the desired setpoint is near. Integral compensates the proportional offset
(overshoot) and stays close to the setpoint.
• Fast switching between modes; temperature setpoint is adjustable at the
press of a button.
• Accepts timer signal for automated setback operation (requires 46643
Timer Thermostat or 46673 Heat/Cool Thermostat).
• Floor warming functionality is available through NTC terminal by adding
an optional 10K fl oor sensor; the sensor acts as a fl oor temperature limiter
(min / max fl oor temperatures are adjustable in the Parameter Menu).
Technical Information
Measured temperature precision
0.1°C (or 0.2°F)
Operating temperature
0°C - 50°C (or 32°F – 122°F)
Setting temperature range
5°C - 37°C by 0.5°C step
(or 41°F - 99°F by 0.5°F step)
Regulation characteristics
Proportional Integral regulation
(adjustable, see installation menu)
or Static differential 0.3°K
Electrical protection
Class II - IP30
Power supply
24 Vac +/- 10%
Output
TRIAC output 24 VAC, 15 W max.
(4 actuators)
External fl oor sensor
(sold separately)
NTC (10K Ohms)
C C
R W NTC
Actuators (4 max)
C
R
24 Vac Class II
24 V
24 V
Transformer
L
N
24 V
110 V
or
220 V
Floor Sensor
(optional)
Setback Signal Input
(optional)
46543
Color-coded Wiring Scheme
Wire
FAS105 (red jacket)
StatLink
®
default
C
green
R
blue
W
red
black
Wiring Diagram
