EMI S1C, WLHA manual Dry Mode, Set Time Mode

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Sequence of Operation – Unit Mounted key pad mode

between room temperature and setpoint temperature is less than two degrees. At that time the electric heat will switch off and the heat pump (compressor) will take over the heating demand. The electric heater will not re-start until a three minute delay has elapsed. Once the room tem- perature is satisfied and the two-minute minimum run time has elapsed, the com- pressor will cycle off. The compressor will not re-start until a three minute delay has elapsed. The fan will operate as described in “Fan Operation”.

Dry Mode

For Dry mode operation the unit must have an electric heater. Also the control must first be configured properly (Heat source – “ON”). See: Configuration Inter- face mode.

Dry mode will remove humidity from the air while maintaining a specific setpoint temperature. This is done by energizing the compressor in cooling along with the electric heater. Dry mode will not maintain a specific humidity level. The unit must be equipped with an optional electric heat element.

For Dry Mode operation, first turn the unit on via the ON/OFF button. Select Dry mode via the MODE button. The room temperature and setpoint temperature will be displayed. Press either the Up or Down arrow buttons to change the setpoint tem- perature. The setpoint temperature will change by one degree with each succes- sive press of the Up or Down arrow but- tons. Holding the button in will change the temperature rapidly.

Place the setpoint temperature at a desired room temperature. Depending on the difference between room temperature and setpoint temperature the compressor and/or heat source will energize. If the room temperature and setpoint tempera- ture are the same the compressor will op- erate in cooling and the electric heat will also energize.

Should the room temperature fall be- low the setpoint temperature by two de- grees, the compressor will stop and heating will continue to boost the room temperature back up to setpoint temperature. If the room temperature rises above the setpoint tem-

perature by two degrees, heating will stop and cooling will continue to bring the room temperature back down to setpoint temper- ature. The fan will operate continuously at low speed while in Dry Mode.

In order to prevent short cycling there is a two minute minimum on time for both cooling and heating. The minimum off time is 3 minutes. Also there is a 30 second de- lay between the start of the compressor and the start of the heat source.

Auto Changeover Mode

For Auto Changeover mode (ACO) the unit must have a heat source. Also the control must first be configured properly (Heat source – “ON”). See: Configuration Interface mode.

Auto Changeover mode will operate either Cooling mode or Heating mode. The control will select the mode of opera- tion depending on the setpoint tempera- ture, room temperature and the differen- tial setting selected in the Configuration mode (See Configuration mode).

For Auto Changeover mode, first turn the unit on via the ON/OFF button. Select Auto mode via the Mode button. The room temperature and setpoint temperature will be displayed. Press either the Up or Down arrow buttons to change the setpoint tem- perature. The setpoint temperature will change by one degree with each succes- sive press of the Up or Down arrow but- tons. Holding the button in will change the temperature rapidly.

Place the setpoint temperature be- low the room temperature by the dead band amount selected in the configura- tion mode. The compressor will start and the unit will run cooling operation as de- scribed under “Cool Mode”.

If the set point temperature is above the room temperature by the dead band amount selected in the configuration mode, the unit will run heating operation as described under “Heat Mode”

Set Time Mode

The “TIME” button is used to enter or exit the Set Time mode. The Set Time mode can be entered while the control is in

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Contents Installation, operation and maintenance Manual To the Installer Safety Instructions Anti-Short Cycle Compressor Pro- tection Day programmable with copy featureProduct Description Controls and ComponentsOptional Equipment Cabinet FeaturesInstaller Supplied Items WLCA/WLHA Controls and ComponentsWLCA/WLHA High Wall unit Mounting WLCA/WLHA Mounting preparationLocate Electrical Wiring WLCA/WLHA High Wall Evaporator Installation InstructionsElectrical Wiring Site Preparation Make sure power is offUnits With or without heat High Volt Electrical WiringLow Volt Interconnect wiring Wiring must be at least 18 awgChoosing a Remote Wall Mounted Straight CoolHeat pump connection Remote thermostat Two-stage Heating Piping Do’s and Don’ts Refrigerant PipingWLH24 Piston/Orifice Installation InstructionManifold Setup For Evacuation Charge to proper weight, charge WLCA/WLHA High Wall Evaporator User interface Buttons Quick Guide Configuration ModeControl User Interface instructions User interface Buttons Louver operation Mode of operationOn/Off Fan OperationOptional Heat pump with Electric heat 2-stage heating Sequence of Operation Unit Mounted key pad modeCool Mode Heat ModeSet Time Mode Dry ModeFilter Check Day Programming modePre-programmed run mode Manual runMin, 10 min, and 15 min Room Air Sampling Configuration ModeSequence of Operation Wall mounted thermostat mode Sleep timerChoosing a Thermostat Electric heat operation Cooling operationDrain Pan Sensor Other FeaturesShort Cycle Protection Asct LCD Back LightID coil sensor fault E03 Memory BackupRoom air sensor fault E01 Condensate fault E02Initial Start-up Optional Hand Held Controller programmingWLCA/WLHA Preperation for Start-Up Test Unit Performance Data Test Unit Performance Data sheetMaintenance Maintenance and Troubleshooting procedureEMI Air handlers with Unit Mount Infrared Controls TroubleshootingPower supply check Troubleshooting procedureOptional Heat pump With Electric Heat Low volt controlsCooling Only Units Electric HeatUnits with Condensation Pumps Display on the indoor unit is blank What should I do? Frequently asked questionsTroubleshooting procedure Mounting Tubing Model Depth Height Length WLCA/WLHA Physical DimensionsMedium Cabinet 18/24 WLCA/WLHA High Wall Evaporator SpecificationsWLCA/WLHA Electrical Specifications Small Cabinet 09/12Cooling Systems with S2CA Side discharge WLCA/WLHA System OptionsCooling Systems with Wall Units Heat pumps System Options with Wall UnitsSystem Options with T3CA TOP discharge System Options with T2CA TOP dischargeALL Product Limited Warranty Condensers EMI’s High Efficiency Product LineEvaporators High Wall Evaporator

WLHA, S1C specifications

The EMI S1C, also known as the WLHA, is a cutting-edge electronic device renowned for its advanced features and robust technologies. This innovative equipment caters to a wide range of applications, from multimedia processing to advanced communications. Its design showcases a seamless blend of functionality and performance, making it a preferred choice among professionals in various fields.

One of the standout characteristics of the EMI S1C is its high-performance processing capability. Equipped with a powerful multi-core processor, the device ensures rapid data processing and multitasking without compromising efficiency. This feature is particularly beneficial for applications requiring real-time data analysis and complex computational tasks.

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Furthermore, the WLHA's robust build quality ensures durability and resilience in diverse environments. The device is constructed with high-grade materials that withstand wear and tear, making it ideal for use in industrial settings or field operations where ruggedness is essential.

Security is also at the forefront of the EMI S1C's design. The device incorporates advanced encryption technologies and secure boot mechanisms to protect sensitive data from unauthorized access. This commitment to security is particularly relevant in today's digital landscape, where data breaches and cyber threats are prevalent.

In summary, the EMI S1C, WLHA is a versatile and powerful electronic device that excels in various domains. Its combination of high-performance processing, extensive connectivity, user-friendly interface, energy efficiency, durability, and robust security features makes it a top choice for professionals seeking reliability and innovation in their tools. Whether in multimedia, telecommunications, or industrial applications, the WLHA is poised to meet the demands of modern technology users effectively.
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