Emerson 1HDEZ-1521 Thermostat User Manual


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7
INSTALLATION
RJ-11 Connection for
Configuration Plug-In tool
Status/Fault
7-Segment LED
Wiring to
Thermostat
R and C from HVAC
terminal strip or
system transformer
Wiring to
Sensor
Wiring to
indoor/outdoor
equipment
W/E
W2
Y
Y2
G
O/B
L
HM
HM2
DHM
DHM2
RC
RH
R
C
LED push
button switch
+
S
-
R
1
2
C
Wiring to
humidification
equipment
Wiring to
dehumidification
equipment
DHM switch*
HM switch*
* To use the HVAC transformer to power humidication/dehumidication
switch HM/DHM switches to “SYS” position:
– Connect humidier to HM
– Connect dehumidier to DHM
If humidier or dehumidier have a separate transformer, switch HM or
DHM switch to “DRY” position:
– Connect humidier to HM and HM2 (or)
– Connect dehumidier to DHM and DHM2
Installation
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