Emerson 1HDEZ-1521- Manuals

5 INS TALL A TION Equipment Control Mount on wall or exterior surface of HVAC equipment. Control has four mounting holes. Wall anchors and screws are provided for mounting on dry-wall. Drill 3/16 " hole for drywall mounting. If mounting on equipment Do Not Mount inside HVAC equipment. Only mount...

6 INSTALLA TION Equipment Control Terminals Operation / Function R ................................................ 24 VAC Transformer RC .............................................. 24 VAC Cooling Transformer* RH ............................................. 24 VAC Heating Transformer* C ...........

7 INS TALL A TION 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 ...

8 INSTALLA TION Installation Fig. 1 - Typical Connection of a Single Stage or Multi-Stage System *Factory installed jumper between RH and RC SYSTEM R RH RC C W/E W 2 Y Y 2 G O/B L Single Stage 24 VAC Power 24 VAC Power for Heating 24 VAC Power for Cooling 24 VAC Common Required Heat N/A Cool N/A Fan...

9 INS TALL A TION Installation Wiring Guide for Equipment Accessories HM HM 2 Non-PoweredHumidifier Transformer R C HM DRY RH HM 2 Fig. 3 - Humidifier. HM terminal provides system 24V on call for humidification Fig. 4 - Powered Humidifier. With HM DRY switch in HM 2 position, HM and HM 2 provide nor...

10 INSTALLA TION Installation Fig. 6 - System Dehumidification with variable speed blower. For systems where low speed requires connect to normally open 24 V powered DHM terminal for low speed connection on air handler/furnace ( 24 V removed on dehumidification call). Wiring Guide for Equipment Acce...

11 INS TALL A TION Installation Thermostat 1) Pull the thermostat off the base using tabs shown above. 2) Place base over wire hole in wall and mark mounting hole locations using base as a template. Drill mounting holes. 3) Fasten base snugly to wall using wall anchors and two mounting screws. Level...

12 INSTALLA TION Thermostat Equipment Control R 12 C 12C R Data 1 Data 2 24 VAC (Common 24 VAC (Hot) Fig. 8 - Thermostat and Equipment Control Wiring 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 transform...

13 AD V ANCED INS TALLER MENU From the Home screen press the and buttons at the same time for three seconds. Press Enter button to save any changes and display the previous menu or press Home to display the Home Screen. Items on the Advanced Installer Menu are:  Communicating Devices – select syste...

14 ADV ANCED INSTALLER MENU Press button to select Setup . Communicating Devices This menu item will list each piece of system equipment. Press button to select start Communicating Devices . Press button to select Equipment Control . Advanced Installer Menu

15 AD V ANCED INS TALLER MENU Indoor GA 2 – 2 stage gas furnace GA 1 – 1 stage gas furnace EL 2 – 2 stage electric heat EL 1 – 1 stage electric heat FAN – Indoor fan only Outdoor AC 2 – 2 stage A/C unit AC 1 – 1 stage A/C unit HP 2 – 2 stage heat pump HP 1 – 1 stage heat pump ACO – no outdoor equipm...

16 ADV ANCED INSTALLER MENU HUM OFF – No humidifier equipmentSYS – Humidifier, powered using 24 V from system IND – Humidifier, powered using independent 24 V source DHM OFF – No dehumidifier equipmentSYS – Dehumidifier, powered using 24 V from system IND – Dehumidifier, powered using independent 24...

17 AD V ANCED INS TALLER MENU USB Upload The USB Upload menu displays a list of thermostat parameters that can be loaded to the thermostat from a USB memory device. If the USB port detects a USB memory device, this menu will automatically display. In the USB Upload menu, select the item to upload an...

18 ADV ANCED INSTALLER MENU Thermostat Summary Indicates the thermostat’s software and version. Heat Pump Lockout (outdoor sensor required) Available only for heat pump systems with indoor electric heat. This feature disables the heat pump and turns on auxiliary heat below the selected outdoor tempe...

19 AD V ANCED INS TALLER MENU Aux Lockout Temperature (outdoor sensor required) Available for heat pump systems. This setting is the maximum outdoor temperature that is acceptable for auxiliary heat to be used. Heat Cycle Rate Anticipation for heat cycle can be adjusted. Default setting is Medium . ...

20 ADV ANCED INSTALLER MENU Installation Test Performs an equipment test to verify proper installation and performance. Only operable on communicating systems with ClimateTalk™. Check System Operation Heating System 1. Press SYSTEM button until Heat is displayed. 2. Press to adjust thermostat settin...

21 MAIN MENU Navigating through your thermostat menus Your thermostat features a simplified easy to understand menu structure. • Press to enter the Main Menu • Highlight a menu item using the or buttons • Enter the item by pressing • Use the or and the or to change menu items and settings • Press th...

22 MAIN MENU Time and Day Display When turned on, the current time and day are displayed on the home screen. Outdoor Temp Display When turned on, the outdoor temperature is displayed on the home screen (for use with outdoor sensor only). Humidity Display When turned on, the sensed humidity is displa...

23 MAIN MENU Cooling Program After entering Heating Program, press to highlight “Switch to Cool Program” and press , or enter Cooling Program on the Main Menu . Factory Pre-Programmed Heating and Cooling Schedule Wake Up (Morning) Leave for Work (Day) Return Home (Evening) Go to Bed (Night) Heating ...

24 MAIN MENU Air Filter Maintenance / Service Reminder / Humidifier Maintenance Default for each is Off . When set to On , a maintenance reminder will appear on the home screen when the system has run for the selected amount of time. The length of time for the maintenance reminder can be selected to...

25 MAIN MENU Beeper – Default is On . Turns audible prompt on to indicate when a button is pressed. Cycle Humidifier – Default if Off . This feature provides an option that reduces the water usage by up to 50% when a flow-through humidifier is controlled by the thermostat. It is recommended for use ...

26 MAIN MENU EMR (Energy Management Recovery) Default is On . With EMR selected On , the heating or cooling system will start early so the temperature in your home is at the desired temperature at the beginning of the program period. If set to Off , the system will not start until the beginning of t...

27 MAIN MENU Temperature Display Adjust – Default is 0° . Your thermostat was accurately calibrated at the factory. However, this option allows you to change the humidity or temperature displayed to match other thermostats in your home. Dehumidification Setpoint – Default is 95% . Setpoint is the pe...

28 TROUBLESHOOTING Symptom Possible Cause Correction Action No Heat/No Cool/No Fan (common problems) 1. Blown fuse or tripped circuit breaker. 2. Power switch to OFF. 3. Furnace blower compartment door or panel loose or not properly installed. 4. Loose connection to system. Replace fuse or reset bre...

29 TROUBLESHOOTING Symptom Possible Cause Correction Action No Cool 1. Cooling system requires service. Heat, Cool or Fan Runs Constantly 1. Possible short in wiring. 2. Possible short in thermostat. 3. Possible short in heat/ cool/fan system. 4. FAN Switch set to Fan ON. Check each wire connection ...

30 TROUBLESHOOTING Equipment Control Fault Codes Number Displayed in 7 Segment LED Comfort Alert Fault P Trip 1 Long Run Time 2 System Pressure Trip 3 Short Cycling 4 Locked Rotor 5 Open Circuit 6 Open Start Circuit 7 Open Run Circuit 8 Welded Contactor 9 Low Voltage System Communication Codes E Com...