Page 2 - ATTENTION: MERCURY NOTICE; for location to send product containing mercury.; WARNING; CAUTION; Index; Applications and Specifications
2 ATTENTION: MERCURY NOTICE This product does not contain mercury. However, this product may replace a product that contains mercury.Mercury and products containing mercury must not be discarded in household trash. Do not touch any spilled mercury. Wearing non-absorbent gloves, clean up any spilled ...
Page 3 - Applications and Specifi cations; to; Single Stage
3 APPLIC A TIONS & SPECIFIC A TIONS Applications and Specifi cations Electrical Rating:Input-Hardwire .............................. 20 to 30 VAC Terminal Load ............................... 1.0 A per terminal, 2.5 A maximum all terminals combined Setpoint Range ............................. 45...
Page 4 - Installation; Number Search fi eld
4 INSTALLA TION Installation Reduce installation time with a USB 1. Go to www.white-rodgers.com 2. Enter 1HDEZ-1521 in the Model Number Search fi eld 3. Select the link for the USB download tool and follow instructions Upload pre-confi gured thermostat settings for every job! Create custom messages ...
Page 5 - Equipment Control; hole for drywall mounting.; Do Not Mount; inside HVAC equipment.; Gas Furnace Equipment
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...
Page 6 - Equipment Control Terminals Operation / Function
6 INSTALLA TION Equipment Control Terminals Operation / Function R ................................................ 24 VAC Transformer RC .............................................. 24 VAC Cooling Transformer* RH ............................................. 24 VAC Heating Transformer* C ...........
Page 7 - switch HM/DHM switches to “SYS” position:
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 ...
Page 8 - - Typical Connection of a Single Stage or Multi-Stage System; - Typical Connection of Heat Pump System up to
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...
Page 9 - Wiring Guide for Equipment Accessories; and HM
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...
Page 10 - - System Dehumidification with variable speed blower. For systems
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...
Page 11 - Thermostat; Pull the thermostat off the base using tabs shown above.; Tabs
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...
Page 12 - - Thermostat and Equipment Control Wiring; Power System; “Equipment Control”
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...
Page 13 - Press; Advanced Installer Menu
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...
Page 14 - Setup; This menu item will list each piece of system equipment.; Communicating Devices
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
Page 15 - Indoor; HP; Rev Valve; use if “O” wire is available (energize the reversing valve in cooling)
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...
Page 16 - HUM; DHM; V from system; – LED locations; Humidification
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...
Page 17 - USB Upload; The; Faults Status; (See “System Fault Codes” on page; in the Model Number Search field and select the USB
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...
Page 18 - Thermostat Summary; Dual Fuel Setpoint (outdoor sensor required); a value between
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...
Page 19 - Aux Lockout Temperature (outdoor sensor required)
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 . ...
Page 20 - Installation Test
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...
Page 21 - Navigating through your thermostat menus; Home; Press the; Enter; Clock and Display Settings; Time and Date; Main Menu
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...
Page 22 - Time and Day Display; Heating Program
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...
Page 23 - Cooling Program
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 ...
Page 24 - Air Filter Maintenance / Service
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...
Page 25 - Beeper; flow-through humidifier is controlled by; On; , the humidifier will; Auto Humidity Reduction; . Prevents condensation from; Low
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 ...
Page 26 - Off; is selected, the system makes the dehumidification a; Off
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...
Page 27 - Dehumidification Setpoint; humidifier will attempt to maintain in
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...
Page 28 - Symptom; Blown fuse or tripped; No Heat; Pilot light not lit.; Reset Operation; Be sure to record the user’s Main Menu settings.; SYSTEM; touch keys simultaneously and hold until the screen resets.; Troubleshooting
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...
Page 29 - Cooling system; Temperature Display Adjust; settings within Thermostat
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 ...
Page 30 - Equipment Control Fault Codes; Number Displayed; System Pressure Trip; System Communication Codes
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...
