Fig 2. Powering an HS-EMS200 Thermostat with a Stand Alone Transformer
Fig 1. Wiring Diagram for One Heating/Cooling System with One HS-EMS200 Thermostat
Thermistor Temperature Sensor
HS-EMS200
W1
Y1
G
R
24V
24V(c)
CLK1
CLK2
RS2
RS1
RS+V
X1
X2
R/24V shunt. Remove if
thermostat power is not
supplied by equipment
Escort5580TC/
VPM5580TC
X
1
X
2
RS
+
V
X
2
X
1
RS
+
V
RS1
RS2
CLK1
CLK2
24V(c)
24V
R
G
W1
Y1
24V(c)
24V
G
W1
Y1
Heat Stage #1
Cool Stage #1
Fan
Power - Hot
Power - Common
Heating/Cooling
System
HS-EMS200
(Backplate)
Warning! Do not remove the internal jumper (shunt).
Output Terminal Functions
CLK1....................................Use with dry contact relay for alternate set points.
CLK2....................................Use with dry contact relay for alternate set points.
RS2 .......................................To Outdoor/Indoor remote sensors.
RS1 .......................................To Outdoor/Indoor remote sensors.
RS+V....................................To Outdoor/Indoor remote sensors and
to Escort5580TC/VPM5580TC.
X2 .........................................To Escort5580TC/VPM5580TC.
X1 .........................................To Escort5580TC/VPM5580TC.
W1 ........................................Energizes on a call for first stage heating.
Y1 .........................................Energizes on a call for first stage cooling.
G ...........................................Fan is energized with a call for heating or
cooling or by pressing the fan button.
R............................................Independent switching voltage.
24V .......................................24 V
AC
Hot from equipment transformer.
24V(
C
) ..................................24 V
AC
Common from equipment transformer.
Warning! Remove the internal jumper (shunt) before connecting the stand-alone transformer.
Escort5580TC/
VPM5580TC
X
1
X
2
RS
+V
X
2
X
1
RS
+V
RS1
RS2
CLK1
CLK2
24V(c)
24V
R
G
W1
Y1
24V(c)
24V
G
W1
Y1
Heat Stage #1
Cool Stage #1
Fan
Heating/Cooling
System
HS-EMS200
(Backplate)
Line Voltage
Common
Hot
24V
AC
Transformer
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