OH-1202H Universal Humidity Touchscreen Thermostat Instruction Manual

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Universal Humidity Touchscreen Thermostat  

with Humidity/Dehumidity Control and  

Automatic Heat/Cool Changeover Option  

OH-1202H  

Single Stage, Multi-Stage, Heat Pump  

Installation and Operating Instructions  

Save these instructions for future use!  

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS  

CAREFULLY BEFORE INSTALLING OR OPERATINGTHIS  

CONTROL COULD CAUSE PERSONAL INJURY AND/OR  

PROPERTY DAMAGE.  

Programming Choices  

7 Day  

5+1+1 Day  

Non-Programmable  

APPLICATIONS  

THERMOSTAT APPLICATION GUIDE  

Maximum  

Stages  

Heat/Cool  

Thermostat  

Configuration Options  

Thermostat  

Applications  

Gas, Oil, Electric, Heat Only,  

Cool Only or Heat/Cool  

Systems, 2 or 3 wire Hydronic  

Zone (Hot Water or Steam)  

Systems, 24 Volt or Millivolt  

Single Stage 1  

No Heat Pump (SS1)  

1/1  

2/2  

Multi Stage 2  

No Heat Pump (MS2)  

Heat Pump 1 Single Stage Compressor  

Single Stage Compressor Heat Pump Systems - up to 2  

3/1  

4/2  

Heat Pump (HP1)  

Stages Aux./Emergency Heat  

Heat Pump 2  

Two Stage or Two  

Compressor Heat Pump  

(HP2)  

Two Stage or Two Compressor  

Heat Pump systems - up to 2  

Stages Aux./Emergency Heat  

SPECIFICATIONS  

Electrical Rating:  

Battery Power. . . . . . . . . . . . . . . . . . . . . . . . . . mV to 30 VAC, NEC Class II, 50/60 Hz or DC  

Input-Hardwire . . . . . . . . . . . . . . . . . . . . . . . . . 20 to 30 VAC  

Terminal Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5A per terminal, 2.5A maximum all terminals combined  

Setpoint Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 to 99°F (7 to 37°C)  

Rated Differentials:  

Fast.  

0.6°F  

1.2°F  

1.2°F  

0.6°F  

Slow  

1.5°F  

1.7°F  

1.7°F  

1.7°F  

Heat (Single Stage/Multi-Stage). . . . . . . . . . . .  

Cool (Single Stage/Multi-Stage) . . . . . . . . . . . .  

Heat Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

Emer Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

Operating Ambient. . . . . . . . . . . . . . . . . . . . . . . . . . 32°F to +105°F (0 to +41°C)  

Operating Humidity . . . . . . . . . . . . . . . . . . . . . . . . . 90% non-condensing max.  

Shipping Temperature Range . . . . . . . . . . . . . . . . . -40 to +150°F (-40 to +65°C)  

Dimensions Thermostat. . . . . . . . . . . . . . . . . . . . . . 4-9/16"H x 5-13/16"W x 1-3/16"D  

Humidity Setpoint Range. . . . . . . . . . . . . . . . . . . . . 5 to 50%  

Dehumidification Setpoint Range . . . . . . . . . . . . . . 40 to 95%  

CAUTION  

Topreventelectricalshockand/orequipmentdamage,  

disconnect electric power to system at main fuse or  

circuit breaker box until installation is complete.  

!

ATTENTION: MERCURY NOTICE  

This product does not contain mercury. However, this prod-  

uct 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 mercury and place in a sealed container. For proper  

disposal of a product containing mercury or a sealed  

container of spilled mercury, place it in a suitable shipping  

container. Refer to www.thermostat-recycle.org for loca-  

tion to send the product containing mercury.  

Index  

Installation  

Page  

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Wiring Diagrams  

Thermostat Quick Reference  

Installer Configuration Menu  

Operating Your Thermostat  

Programming  

Troubleshooting  

PART NO. 37-7406A  

1242  

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Name	OH-1202H Universal Humidity Touchscreen Thermostat Instruction Manual
Make	OH
Language	English
Filetype	PDF (Download)
File size	0.42 MB

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• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• OH

OH-1202H Universal Humidity Touchscreen Thermostat Instruction Manual Overview

Summary of Contents

• Page 1: Universal humidity touchscreen thermostat with humidity/dehumidity control and automatic heat/cool changeover option. Installation and operating instructions. Failure to read and follow all instructions carefully before installing or operating this control could cause personal injury and/or property damage. Programming choices include 7 day, 5+1+1 day, and non-programmable options. Thermostat application guide covers various systems including gas, oil, electric, heat only, cool only, and heat/cool systems. Specifications include electrical rating, input-hardwire, terminal load, and setpoint range. Operating ambient temperature ranges from 32°F to +105°F. Operating humidity is a maximum of 90% non-condensing. Caution to prevent electrical shock and/or equipment damage by disconnecting electric power to the system during installation. Attention: This product does not contain mercury, but may replace a product that does. Proper disposal instructions for mercury-containing products are provided.
• Page 2: Installation Thermostat power method Battery powered, no 24 Volt system power available. Thermostat installation and all components of the control system shall conform to Class II circuits per the NEC code. Remove old thermostat and mark wires for terminal identification. Installing new thermostat involves pulling the thermostat body off the base and marking mounting hole locations. Fasten base snugly to wall using mounting holes and two mounting screws. Connect wires to terminal block on base using appropriate wiring schematic. Push excess wire into wall and plug hole with a fire resistant material. For best results, use a premium brand AA alkaline battery. The Power Stealing Switches should be left in the On position for most systems.
• Page 3: Wiring diagrams for single stage or multi-stage systems are provided. The system can operate with a single transformer. Installer configuration menu allows selection of “O” or “B” for changeover function. The thermostat is designed for single-transformer or two-transformer systems. Refer to equipment manufacturers’ instructions for specific system wiring information. Heat pump connections are detailed for both single stage and multi-stage systems. The dual fuel option de-energizes heat mode stages when auxiliary heat is energized. Blower/circulator fan is energized on a call for cool or fan on. Fault or system malfunction indicators are included for heat pumps. 24 volt common is optional for system operation and required for remote sensor.
• Page 4: Wiring diagrams provide essential information for system installation and configuration. The DHM terminal is used on systems with a compatible dehumidification feature. Humidification terminal energizes on call for heat if humidity setpoint is above room humidity. A relay should be installed to switch the fan speed to a lower setting during dehumidification. The reduction in air flow allows the coil to remove more humidity from the air. An anti-freeze-up control is recommended to prevent the air conditioning coil from freezing. Typical wiring diagrams illustrate configurations for dehumidifier and humidifier systems. The relay must be rated for blower motor load. Configuration Menu item #41 allows for selection of humidification. The CAFC prevents compressor circuit issues due to low air flow or other factors.
• Page 5: Home screen description includes room temperature, day of week, set temperature/humidity, and time of day. Battery level indicator shows the current power level of the batteries. Menu key allows entering different modes such as cleaning, configuration, set time, and set schedule. Displays Change Filter/Change Pad/Change UV Lamp when maintenance is needed. Cool Savings display indicates the feature status. Hold Until indicates when a temporary hold period will end. Call for Service indicates a fault in the heating/cooling systems. Humidity indicates the humidity setpoint. System On indicates when heating or cooling stage is energized. Copy indicates the copy program feature is being used during programming.
• Page 6: Installer/configuration menu provides instructions for accessing and navigating the menu. To enter the menu, press the Menu touch key and hold the Installer Config touch key for 5 seconds. Screen reference numbers appear in the top right corner of the display. To default the programming, press the and SYSTEM keys simultaneously. Configuration menu items must match the heat pump system for heat pump systems. Selects Multi-Stage, Heat Pump 1, Heat Pump 2, or Single Stage. Programs per week can be set for 7 days, 5+1+1 days, or non-programmable. System switch configuration options are available for non-heat pump and heat pump modes. Selects Energy Management Recovery and adjustable anticipation cycle rates. Selects temperature display units in Fahrenheit or Celsius and audible beeper settings.
• Page 7: Installer/configuration menu Configuration menu Selects dual fuel setpoint (°F), dF selected on with outdoor sensor available. Selects dual fuel setpoint (°F), dF selected on with no outdoor sensor. Selects compressor off delay in seconds, dF selected on. Selects auxiliary heat cut out temperature. Selects blower balance point. Selection of 80 disables this feature. Selects humidity display alternate with time. Selects auto humidity reduction. Selects change UV lamp feature. This thermostat is configured for heat and cool with auto changeover default. Energy management recovery causes the thermostat to start heating or cooling early.
• Page 8: Installer/configuration menu Select continuous display lighting (dL) – In low lighting conditions, display backlight improves the display contrast. Compressor optimization – CO provides a delay in circulator fan operation after the compressor turns on or off. Select temperature display adjustment 5 LO to 5 HI – This allows you to adjust the room temperature display by -5°F to +5°F in 1° steps. Select °F or °C readout – Changes the display readout to Celsius or Fahrenheit as required. Select audio prompting (beeper) on or off – Factory default setting is On. If you wish to turn off the beeper select Off. Select daylight saving time calculation – This feature will allow the thermostat to calculate the DST automatically. Select automatic schedule – This feature allows programming a “Comfort Temperature” into all program periods. Comfort alert with active protection – Turn this feature ON to enable active protection against compressor damage. Heat temperature limit range – This feature adjusts the highest setpoint temperature for heat. Cool temperature limit range – This feature adjusts the lowest setpoint temperature for cool.
• Page 9: Installer/configuration menu Skip this step and continue through the remainder of the configuration menu if you require an air filter change out indicator or humidifier pad change out indicator. Select compressor delay (Cd) – After the auxiliary heat is turned on, the compressor(s) shut down is delayed for the time selected. Select auxiliary off (AO) – Applicable with HP1 or HP2 selected with outdoor sensor. Select the temperature that will inhibit the auxiliary heating stage. Pressing or keys to select your keypad lockout combination number. Select fast second stage, ON or OFF – Not available if configured for SS1. Select programmable blower balance point (bP) – The fast cool feature operates the cooling stages in the same manner as fast heat. Humidity display (Hd) – Selecting HD On enables the display to alternately show the current time and the humidity. Auto humidity reduction (HR) – This feature automatically lowers humidity setting when the outside temperature drops. Select remote temperature sensor enabled – ON enables a remote sensor connected to thermostat and displays the sensor temperature. Select dual fuel feature (dF) – This feature is applicable only in heat pump modes (HP1, HP2).
• Page 10: Installer/configuration menu Dehumidification feature may use more energy by prioritizing cooling if humidity is 2% above the desired setting. Cycle humidifier feature reduces water usage by up to 50% when controlled by the thermostat. Change UV lamp feature displays a reminder to maintain the UV system after a set time of operation. Change humidifier pad feature displays a reminder to maintain or clean your humidifier after a set time of operation. Select change filter run time feature displays a reminder to change or clean your air filter after a set time of blower operation. Optimal dehumidification mode automatically reduces indoor humidity with a call for cooling if humidity is 2% above the setting. Check thermostat operation by selecting heat and adjusting the thermostat setting. Fan operation can be checked by turning on power and adjusting the fan key to the ON position. Caution: Do not allow the compressor to run unless the compressor oil heaters have been operational for 6 hours.
• Page 11: Choose the fan setting (Auto or On). Emergency mode applies only to heat pump systems. Fan Auto runs the fan only when the heating or cooling system is on. Emergency heat bypasses the heat pump to use the heat source wired to terminal W/E, W2. Fan On runs the fan continuously for increased air circulation or additional air cleaning. Press SYSTEM key to select EM. Choose the system setting (Cool, Off, Heat, Em, Auto). Auto changeover allows the thermostat to automatically select heating or cooling. To prevent compressor damage, do not operate the cooling system if the outdoor temperature is below 50°F. Manual operation will bypass the program and allow you to adjust the temperature as desired.
• Page 12: Programming Set current time and day by pressing the Menu key to enter the installer menu. Enter the heating program by selecting Heat in the system switch area. The display will show the day(s) being programmed along with the time and set temperature. Press and hold keys to adjust the hour, minutes, and year. Repeat steps until all program times and temperatures are set for the day. Press Advance Day to change to the next day and repeat the programming steps. The thermostat will run your program after pressing Run Schedule. Automatic daylight saving calculation adjusts the clock for daylight savings time. Enter the cooling program by pressing the SYSTEM key until the Cool icon appears. Auto Schedule allows for quick programming of heating and cooling temperatures.
• Page 13: Programming Cooling example Programmable fan option allows selection of fan operation during a program period. The default state of the fan key is FAN Auto. FAN Prog mode runs the fan during a program period. In Run mode, the fan will turn on during the complete period if FAN Prog is selected. Energy saving factory pre-program is set for all days of the week. The factory set heating and cooling schedule is provided in a table. You can eliminate specific program periods in the configuration menu. The thermostat can be configured for 7 day or 5+1+1 programming. Guidelines for planning your program include saving energy with lower heating and higher cooling temperatures. Do not program the heating temperature higher than the cooling temperature if using Auto Changeover.
• Page 14: Programming worksheet for re-programming 5+1+1 and 7 day program. Heating program includes settings for wake up, leave for work, return home, and go to bed. Cooling program also includes settings for wake up, leave for work, return home, and go to bed. Wired remote temperature sensing allows for temperature display from the thermostat or remote sensor. One remote temperature sensor can be installed indoor or outdoor with a maximum cable length of 100 meters. The thermostat must have a 24 VAC common connection for the remote sensor to operate. The remote sensor can be enabled or disabled in the installer/configuration menu. In normal operation, the display alternates between time and remote temperature when the remote sensor is enabled. The remote sensor can be set as indoor or outdoor, affecting the displayed temperature. Outdoor temperature range is -40°F to 140°F; indoor temperature range is 32°F to 99°F.
• Page 15: Programming Averaging or weighting remote sensors The thermostat will weight or average the temperature of the indoor remote sensor with the local sensor in the thermostat for each program period. When the thermostat is configured for Heat Pump mode and the Dual Fuel feature is selected on, the thermostat can monitor the outside temperature using remote sensor F145-1378 or use software logic to determine when to switch to gas heat. The user selectable temperature is called the dual fuel temperature setpoint, dF, and is set in the Installer/Configuration menu. With outdoor remote sensor installed and enabled, the dual fuel temperature setpoint can be set to a temperature of -5° through 50°. A higher temperature or dual fuel setting will provide a smaller stage separation between the heat pump and Aux to give more comfort. In normal operation of the thermostat, the current temperature displayed will be the weighted average of the local sensor and the remote sensor. Blower balance point for heating allows you to select an outdoor temperature to slow the fan speed so the air from the duct feels warmer. Troubleshooting Comfort Alert Codes The Comfort Alert diagnostics product monitors the air conditioning outdoor systems with single phase Copeland Scroll compressors.
• Page 16: Troubleshooting Reset operation: If a voltage spike or static discharge blanks out the display or causes erratic thermostat operation, reset the thermostat by removing it from the wall plate and removing batteries for 2 minutes. No heat/no cool/no fan: Common problems include a blown fuse, tripped circuit breaker, or a furnace power switch turned off. No heat: Possible causes include an unlit pilot light or a furnace lock-out condition. Re-light the pilot or contact a service person if the heat is intermittent. Diagnostic for no heat: Set the system switch to heat and raise the setpoint above room temperature. The thermostat should click if operating properly. No cool: Similar diagnostic steps as no heat, but set the thermostat to cool and lower the setpoint below room temperature. Heat, cool, or fan runs constantly: Check for possible shorts in wiring or the thermostat, and ensure the fan switch is not set to fan on. Thermostat setting and thermometer disagree: The thermometer can be adjusted +/- 4 degrees. Furnace cycles too fast or too slow: The location of the thermostat or the size of the heating system may influence the cycle rate. Forgot keypad lockout code: Press the menu key for 20 seconds to unlock the thermostat. Blank display or keypad not responding: Use the reset operation to resolve the issue.