STEALTH Slim Concealed Series Duct Unit Owner’s Manual

STEALTH Slim Concealed Series Duct Unit

SAFETY PRECAUTIONS

Please read the following before operation.
Recognize safety information. This is the safety-alert symbol. When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury.

Understand these signal words:
DANGER, WARNING, and CAUTION.

These words are used with the safety-alert symbol.

DANGER identifies the most serious hazards which will result in severe personal injury or death.
WARNING signifies hazards which could result in personal injury or death.
CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage.
NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

NOTE: Your actual air conditioning & heating system and related devices may differ from the images shown in this manual.

WARNING! Heat pumps, air conditioners & heating equipment should be installed, started up, and serviced only by qualified installers and service technicians. Air conditioning, heat pumps and refrigeration systems are hazardous due to high voltage electrical components, high refrigerant pressures, and moving parts.

Please read the following before operation.

WARNING

• Disconnect electrical power to the indoor and outdoor units before performing any maintenance or cleaning.

• Do not attempt to repair the Stealth system yourself. Incorrect repairs may cause electric shock or fire. Contact a qualified service technician for all service
  requirements.

• Keep combustible materials away from the unit.

CAUTION

• Do not put hands or any objects into the air inlets or outlets. This may cause personal injury or damage the unit.
• When cleaning, be careful not to splash water on the unit. Doing this may cause electric shock or damage to unit.

System Schematic

Indoor Unit

**System Components***

1. Indoor Power Supply
2. Electric Box
3. Communication Cable
4. Wired Tether Controller
5. Communication Cable
6. Front Panel
7. Service Cover
8. Liquid Pipe
9. Gas Pipe
10. Drain Hose
11. Outdoor Power Supply

* Not all items included in equipment purchase

Outdoor Unit

SYSTEM FUNCTIONS

WHISPER QUIET
Not only are the Stealth systems energy efficient but they are quiet too. Slim Concealed Duct operates with sound levels starting as low as 28 dB(A).

MULTI FAN SPEEDS
Whether operating in either Cooling or Heating mode, the indoor fan can be set to your
choice of three different speeds (Low, Medium or High) to achieve maximum comfort.

BUILT IN CONDENSATE LIFT PUMP
The indoor unit features a built-in drain pump that pumps condensate from the basepan to the drain system.

CONDENSATE SENTRY
The unit’s fail-safe mechanism recognizes when there is a high level in the condensate pan and shuts off the system to prevent overflow.

INTELLIGENT PRE-HEATING
The Designer system guards against the annoying cool air blown into the room in heating mode. The system constantly monitors the discharge air temperature. It will delay the indoor fan until the indoor coil has warmed up to prevent blowing uncomfortable cool air into the room.

TETHER CONTROLLER
The Stealth wired Tether Controller mounts to the wall up to 25 feet from the unit. It provides complete control over your unit’s operation mode, desired temperature, fan speed, airflow direction and more.

INTELLIGENT DEFROST
The Designer Intelligent Defrost function increases room comfort and saves energy by eliminating unnecessary defrost cycles. In heating mode, the unit will monitor the outdoor coil for frost buildup. Once frost buildup has been detected, the system will switch into a defrost mode to remove the frost.

In defrost mode the wired Tether Controller display will show “H1” and the indoor fan and outdoor fan will turn off while the system removes frost from the outdoor coil. Once the frost has been removed, the wired Tether Controller display shows room set point and the system will revert back to normal heating operation.

POWER FAILURE MODES
Power interruptions are no problem for the Designer system. User selections and system parameters are stored in non-volatile memory. These parameters are retained during a power failure. When power is returned, the slim duct system will automatically return to the last operating mode. Or, the system can be set to power up in standby mode.

TURBO MODE
Use Turbo Mode for situations when you wish to achieve the desired room temperature in the shortest possible time. This mode runs the unit at ultra high speeds for quickest results.

CLOCK
Using the 24-hour clock feature, you can control each function in real time, for the most user-friendly operation.

MODE BUTTON
The unit can be set to five different operating modes: HEAT, COOL, DRY, FAN ONLY and AUTO.

NOTE: AUTO MODE has fixed setpoints of 68° F heating and 77° F cooling, which are not adjustable. The system will automatically select heating or cooling to maintain room  temperature within this band.

DRY MODE
Select this mode to increase moisture removal during warm humid conditions. In Dry mode the indoor fan will run at low speed during the cooling cycle. When setpoint is reached, the indoor fan will turn off with the compressor.

TIMER MODE
The unit can be programmed to turn ON or OFF after a specific amount of time. The time period is adjustable between one half and 24 hours.

SLEEP MODE
The unit will automatically adjust room temperature during your sleep time. This slight change in temperature will not affect your comfort level due to the natural effects that sleeping has on the body, but it will save on energy consumption and will lower electric bills.

X-FAN MODE
When operating in humid areas, Designer has a Dry Coil function called X-Fan that will allow the indoor fan to run for a pre-determined amount of time after the unit is turned off (cooling or dry modes) to ensure that additional moisture is removed from coil.

FAHRENHEIT °F / CELSIUS °C
The wired Tether Controller can be set to display in either °F or °C.

SELF-DIAGNOSIS
With an on-board computer using real-time diagnostics, the Stealth Designer system helps to prolong its own life. The automatic diagnosis feature continuously scans for unacceptable operating conditions or malfunctions. If such conditions occur, the system takes corrective action or stops. Error codes are shown on the unit display to facilitate easy troubleshooting and repair.

PRIVACY LOCK MODE
The wired Tether Controller has a Privacy Lock. The Privacy Lock averts unauthorized access or tampering with system settings.

AGENCY LISTINGS
All systems are listed with AHRI (Air conditioning, Heating, and Refrigeration Institute) and are ETL certified per UL Standards.

INTRODUCTION TO THE TETHER CONTROLLER

OPERATING INSTRUCTIONS

ON/OFFBUTTON
Press On/Off to turn On the unit. Press again to turn it Off.

MODE SETTING
When the unit is ON, press Mode button to select an operating mode. It will change sequentially as shown below: Auto–Cool–Dry–Fan–Heat

TEMPERATURE SETTING
Press ▲or ▼ to increase/decrease the setpoint temperature as shown below. In Cool, Dry, Fan or Heat mode, the setpoint temperature range is 61°-86°F. In Auto mode, the setpoint temperature is not adjustable.

FAN SETTING
When the unit is ON, press Fan button to select the fan speed of the indoor unit. It will change sequentially as shown below.

TURBO MODE
Turbo mode will force the unit up to maximum capacity to heat or cool the room in the shortest amount of time. Turbo Mode can only be used on Heat or Cool modes.

Turbo Setting
Press Function button until the Turbo icon is displayed. Then press Enter/Cancel to confirm. To cancel, press the Function button to re-enter the Turbo setting status, then press Enter/Cancel.

TIMER SETTING
The Designer System has two timer modes. The Timer-On mode will turn the unit ON after the preset time period. The Timer-Off Mode will turn the unit OFF after the preset time period. The preset time period can be from 0.5 to 24 hours in 0.5 hour increments.

Timer-On Setting
Turn the unit Off, press the Timer button. The OFF icon will flash and the hours will be displayed.
Set the time period for the unit to remain OFF before turning ON by pressing the ▲ or ▼ buttons. Press Timer button to confirm and start Timer-On mode.

Timer-Off Setting
Turn the unit On, press the Timer button. The ON icon will flash and the hours will be displayed. Set the time period for the unit to remain ON before turning OFF by pressing the ▲or ▼ buttons. Press Timer button to confirm and start Timer-Off mode.

SLEEP MODE
The unit will automatically adjust room temperature during your sleep time. This slight change in temperature will not affect your comfort level due to the natural effects that sleeping has on the body, but it will save on energy consumption and will lower your electric bill. Press the SLEEP button to select Sleep Mode. The SLEEP icon will appear.

In Cool or Dry modes:
If setpoint is between 61℉ to 73℉, temperature will slowly increase 2℉ per hour for 3 hours, then maintain this setpoint for 4 hours, then reduce setpoint by 2℉ and hold at this setpoint until Sleep Mode is cancelled.
If setpoint is between 74℉ to 81℉, temperature will slowly increase 2℉ per hour for 2 hours, then maintain this setpoint for 5 hours, then reduce setpoint by 2℉ and hold at this setpoint until Sleep Mode is cancelled.
If setpoint is between 82℉ to 85℉, temperature will slowly increase 2℉ per hour for 1 hour, then maintain this setpoint for 6 hours, then reduce setpoint by 2℉ and hold at this setpoint until Sleep Mode is cancelled.
If setpoint is 86℉, unit will run at this setpoint for 7 hours, then reduce setpoint by 2℉ and hold at this setpoint until Sleep Mode is cancelled.

In Heat mode:
If setpoint is between 82 ℉ to 86℉, the unit will slowly reduce setpoint by 2℉ per hour for 3 hours, and then maintain this setpoint until Sleep Mode is cancelled.
If setpoint is between 69 ℉ to 81℉, the unit will slowly reduce setpoint by 2℉ per hour for 2 hours, and then maintain this setpoint until Sleep Mode is cancelled.
If setpoint is between 63℉ to 68℉, the unit will reduce setpoint by 2℉, and then maintain this setpoint until Sleep Mode is cancelled.
If setpoint is 62℉, the unit will run at this setpoint until Sleep Mode is cancelled.

Sleep Setting
Turn the unit On and select a mode (ex. Heat, Cool, or Dry). Press the Function button until the Sleep icon appears on the display. Press the Enter/Cancel button to start Sleep Mode.

X-FAN MODE
The X-Fan function may only be selected in Cool and Dry modes. After the unit is turned Off, the X-Fan function will keep the indoor fan running for 2 minutes to dry the indoor evaporator coil to help avoid mold and mildew growth.

X-Fan Settings
Turn the unit On and select Cool or Dry mode. Press Function button until X-fan icon is displayed and then press Enter/Cancel to activate this function.

I-FEEL MODE
The indoor unit will sense room temperature at the wired Tether Controller instead of at the return air section of the indoor unit.

I-Feel Settings
Press the Function button until the I-Feel icon is displayed, then press Enter/Cancel to activate the function.

FREEZE GUARD MODE
The unit will automatically maintain the room temperature above 46º F. This setpoint
temperature is not adjustable. Freeze Guard Mode can only be selected with the unit in Heat Mode. Fan speed selection will be not be allowed; the unit will automatically select the proper fan speed for the room conditions.

Freeze Guard Setting
In Heat mode, press Function until the Freeze Guard icon is displayed. Press Enter/Cancel button to activate.
To deactivate, press Function to select“Freeze Guard”setting status. Then press Enter/Cancel until the flashing “Freeze Guard”symbol disappears.

Setup and Configuration Modes

INDOOR FAN MODE
The unit has two selectable indoor fan operating modes:

• Mode 0 (Factory default setting): The indoor fan will run continuously, except in heat mode, where the indoor fan will continue to run for 60 seconds after room temperature reaches setpoint.
• Mode 1: The indoor fan will turn Off 10 seconds after the room temperature reaches setpoint, regardless of the mode.

Indoor Fan Mode Setting
Turn the unit Off, Press the Function and Timer buttons simultaneously for 5 seconds until 00 is displayed on the temperature display. Press Mode button until 05 is displayed. Then press and ▼buttons to select the desired indoor fan mode ( ‘00′ for Mode 0 or ’01’ for Mode 1). Press Enter/Cancel button to activate.

OUTDOOR AIR MODE
The Outdoor Air Mode can be used when a field supplied outdoor air damper is connected to the Slim Duct unit or ductwork. The Outdoor Air Mode controls the outdoor air entering the system.

Outdoor Air Setting
When the unit is ON, press Function until the AIR icon is displayed. Press ▲and ▼to select the outdoor air damper run time (see table below).

Damper Run Time Table (Minutes)

AIR CODE| 1| 2| 3| 4| 5| 6| 7| 8| 9| 10
---|---|---|---|---|---|---|---|---|---|---
Air Damper| 6-ON| 12-ON| 18-ON| 24-ON| 30-ON| 36-ON| 42-ON| 48-ON| 54-ON| 60-ON
Run Time| 54-OFF| 48-OFF| 42-OFF| 36-OFF| 30-OFF| 24-OFF| 18-OFF| 12-OFF| 6-OFF| 0- OFF

OPERATING INSTRUCTIONS

CELSIUS OR FAHRENHEIT TEMPERATURE DISPLAY
The wired Tether Controller is set from the factory to display temperature in Fahrenheit (Fº). If Celsius (Cº) is desired, turn the unit OFF, press Mode and ▼ buttons at the same time for 5 seconds to alternate between temperature displays.
PRIVACY LOCK
The Privacy Lock prevents unauthorized access to the unit controls and prevents tampering with system settings. To lock the wired Tether Controller, press ▲and ▼ buttons simultaneously for 5 seconds and the Lock Icon will be displayed. Repeat the process to unlock the Tether Controller and cancel Privacy Lock.
TEMPERATURE DISPLAY MODE
The wired Tether Controller may display either room temperature sensed at the system, room temperature sensed at the Tether Controller, or return air temperature sensed at the indoor unit.

Temperature Display Setting
To set the Tether Controller temperature display, turn unit Off. Press Function and Timer buttons simultaneously for 5 sec. The temperature display will show 00. Press the Mode button to select the Display Code (see table below) for the desired temperature display. Press Enter/
Cancel button to save the setting.

inlet during Cool, Dry and Fan modes. During Heat and Auto modes, display the indoor ambient temperature sensed at the wired Tether Controller.
04|

POWER FAILURE MODES

The unit has two selectable system power up modes:

Power Failure Recovery
After the initial power up, the unit will store user selections and system parameters in
non-volatile memory. These parameters are retained during a power failure. When power is returned, the system will automatically return to the last operating mode.

Power Failure Standby
The system will power up in standby or off mode. This is the factory default setting.

POWER FAILURE MODE SETTINGS
To set Power Failure Recovery Mode, turn the unit OFF and press the Mode and ▲buttons simultaneously for 5 seconds until the MEMORY Icon is displayed.
Repeat the process to select Standby mode. In Standby mode the Memory icon is not displayed.

CARE AND CLEANING

CLEANING THE FILTER

• Never remove the air filter from the unit except for cleaning; otherwise it may cause dust or dirt to restrict airflow to the unit.
• When the air conditioning unit is used in an environment with heavy dust, the air filter should be cleaned often (generally once every two weeks).

Perform the following on an annual basis:

• Clean or replace air filter.
• Inspect drain line for potential clogs or leaks.
• Hose off both sides of the coil in the outdoor unit to remove loose debris or dirt buildup.

CAUTION: Take notice of the following items before cleaning your air conditioning unit.

• To avoid electric shock or injury, do not attempt to clean the unit unless it has been turned off and disconnected from the main power supply.
• Do not wash the unit with water; this may cause an electric shock.
• During cleaning, be sure to use a stable standing platform.

TROUBLESHOOTING & DIAGNOSTIC CODES

• There is no power supply
• Circuit breaker is tripped due to electrical leakage

Unit runs, then stops|

• Air inlet/outlet of the indoor/outdoor unit is clogged

Poor cooling effect|

• Air filter screen is too dirty or clogged
• There are too many heat sources in the room
• A door or window is open
• There are obstacles at the air inlet/outlet
• Temperature is set too high

Poor heating effect|

• Air filter screen is too dirty or clogged
• A door or window is open
• Temperature is set too low

NOTE: If the air conditioner still malfunctions after checking these possible causes, contact an authorized service technician.

Diagnostic Codes

Control Board
Indoor/Outdoor Mismatch| LP| Indoor and Outdoor Units Do Not Designer(Model or Capacity)
High Current Protection| E5| Power Supply is not Stable and Voltage Range is too Large
Communication Error| E6| Mis-wired or Communication Failure
Indoor Air Temp. Thermistor| F1| Bad Connection, or Indoor Air Sensor Failure
Indoor Coil Temp. Thermistor| F2| Bad Connection, or Indoor Coil Sensor Failure
Outdoor Air Temp. Thermistor| F3| Bad Connection, or Outdoor Ambient Sensor Failure
Outdoor Coil Temp. Thermistor| F4| Bad Connection, or Outdoor Coil Sensor Failure
Compressor Discharge| F5| Bad Connection, or Discharge Sensor Failure
Compressor Overload Protection| H3| Low Refrigerant Charge, Blocked Capillary, or Compressor Motor Failure
IPM Module Protection| H5| IPM Module Temperature Too High, High Ambient, Low Voltage, or Bad Connections
Indoor Fan Malfunction| H6| Indoor Fan Stopped or Running too Slow
Compressor Synchronism| H7| High Pressure, Low Voltage, or Bad Connections
4-Way Valve Malfunction| U7| Bad Connection, Solenoid Failure, or Valve Malfunction
Defrost Mode| H1| No failure, system is defrosting indoor coil
High Pressure Protection| E1| Too much refrigerant, High Ambient conditions or low airflow

ENERGY SAVING TIPS

1. Relaxing room temperature at night is OK:
   During the nighttime hours you don’t require the same level of conscious cooling or heating. Try using Sleep Mode to gradually relax room temperature and allow the unit to run less and save energy.

2. Curtains and shades:
   In the summer, you need to block the effects of the sun.
   Close window curtains and shades on the south and west side of your home to help block solar heat. In winter, the sun is your friend. Open curtains and shades to allow solar heat into your room.

3. Close doors:
   If you don’t need to heat and cool your whole home, confine the heating and cooling to one room by closing doors. Limit the space you’re heating and cooling to specified capability of the unit.

4. Service the unit:
   Some basic maintenance might be all you need. The outdoor unit will greatly benefit from a good hosing out, especially in treed areas where seeds and other debris can stick to coil fins and make the unit work up to 15% harder!

5. Rearrange the room:
   Furniture that obstructs airflow means you could be heating and cooling the back of a chair or the front of a sofa instead of the actual living space. Remove or rearrange obstacles blocking airflow.

6. Try 75 degrees:
   75°F is a good point for an air conditioner to run at its optimal
   performance level. Even a 5-degree change in temperature can make your unit use up to 40% more energy! Lighting:
   Turning lights off can help reduce your heat. Each light bulb is a tiny heater. Your air conditioner must waste energy overcoming the heat from your lights to reach and hold your desired room temperature.

7. Is anyone home?
   If possible, while you’re away turn your unit to Auto mode and make sure windows and drapes are closed. Although room temperature may be less than optimal for a few minutes when you come home, the unit will soon have the
   room back to your desired temperature.

8. Don’t forget the fan:
   The fan is much like a car. The faster it runs, the more energy it uses. Sometimes we need the car to go fast, but slow is good enough most of the time. Try saving money by using the comfortable quiet low fan speed as much as possible.

LIMITED WARRANTY STATEMENT

FOR WARRANTY SERVICE OR REPAIR:
Contact your installing contractor. You may find the installer’s name on the equipment or in your Owner’s packet. Complete product registration below and send back by email to Info@StealthComfort.com

PRODUCT REGISTRATION

1. Model No.
2. Serial No. Date of Installation
3. Owner Name
4. Address of Installation
5. Installing Contractor
6. Address
7. Phone No. / E-mail

STEALTH (1HVAC Energy LLC) warrants this product against failure due to defect in materials or workmanship under normal use and maintenance as follows. All warranty periods begin on the date of original installation. If the date cannot be verified, the warranty period begins one hundred twenty (120) days from date of manufacture. If a part fails due to defect during the applicable warranty period, Company will provide a new or remanufactured part, at Company’s option, to replace the failed defective part at no charge for the part. This limited warranty is subject to all provisions, conditions, limitations and exclusions listed below.

• A warranty period of Five (5) years on all parts to the original registered end user.
• A warranty period of seven (7) years on the compressor.
• Online registration of this product at (Stealthcomfort.com/warranty-information) extends the warranty as follows – one year unit replacement and twelve (12) year compressor warranty.
• Warranty applies only to products remaining in their original installation location.
• Defective parts must be returned to the distributor.

LIMITATIONS OF WARRANTIES: ALL IMPLIED WARRANTIES AND/OR CONDITIONS (INCLUDING IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR USE OR PURPOSE) ARE LIMITED TO THE DURATION OF THIS LIMITED WARRANTY, SOME STATES OR PROVINCES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY OR CONDITION LASTS, SO THE ABOVE MAY NOT APPLY TO YOU. THE EXPRESS WARRANTIES MADE IN THIS WARRANTY ARE EXCLUSIVE AND MAY NOT BE ALTERED, ENLARGED, OR CHANGED BY ANY DISTRIBUTOR, DEALER, OR OTHER PERSON, WHATSOEVER.

THIS WARRANTY DOES NOT COVER:

1. Labor or other costs incurred for diagnosing, repairing, removing, installing, shipping, servicing or handling of either defective parts, or replacement parts, or new units.
2. Product cleaning required prior to warranty service and repair.
3. Normal maintenance as outlined in the installation and servicing instructions or Owner’s Manual, including filter cleaning and/or replacement and lubrication.
4. Failure, damage or repairs due to faulty installation, misapplication, abuse, improper servicing, unauthorized alteration or improper operation.
5. Failure to start due to voltage conditions, blown fuses, open circuit breakers, or damages due to the inadequacy or interruption of electrical service.
6. Failure or damage due to floods, winds, fires, lightning, accidents, corrosive environments (rust, etc.) or other conditions beyond the control of the Company.
7. Failure or damage of coils or piping due to corrosion on installations within one (1) miles of sea coast or corrosive body.
8. Parts not supplied or designated by Company, or damages resulting from their use.
9. Products installed outside the 48 contiguous United States, except the District of Columbia and Hawaii.
10. Electricity or fuel costs, or increases in electricity or fuel costs from any reason whatsoever, including additional or unusual use of supplemental electric heat.
11. Any cost to replace, refill or dispose of refrigerant, including the cost of refrigerant.
12. Shipping damage or damage as a result of transporting the unit.
13. Accessories such as condensate pumps, line sets and so forth are not covered.
14. Any special, indirect or consequential property or commercial damage of any nature whatsoever. Some states or provinces do not allow the exclusion of incidental or consequential damages, so the above limitation may not apply to you.
15. Consumable components, such as air filters, are not covered under parts warranty.

This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. In jurisdictions where warranty benefits conditioned on registration are prohibited by law, registration is not required, and the STANDARD warranty period shown above will apply.
1HVAC Energy LLC ©2022

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