ALORAIR Sentinel HD35P Crawl Space/Basement Dehumidifier User Manual

1. Product Overview

The ALORAIR Sentinel HD35P is a high-efficiency dehumidifier designed for managing humidity levels in crawl spaces, basements, and other damp environments up to 1000 square feet. It features an internal condensate pump for flexible drainage options, automatic defrost, and a memory start function for convenience.

Image 1.1: The ALORAIR Sentinel HD35P dehumidifier, showcasing its compact design and included drainage hose.

Key Features:

• Dehumidification Capacity: 35 Pints per day (AHAM), 70 Pints per day (Saturation).
• Coverage Area: Up to 1000 sq. ft.
• Drainage: Built-in heavy-duty condensate pump and gravity drain options.
• Automatic Defrost: Ensures operation in low-temperature environments.
• Memory Start: Automatically restarts after power interruptions.
• Quiet Operation: Operates at less than 50 decibels.
• Filter: MERV-1 filter for air purification and unit protection.

2. Setup and Installation

Proper setup is crucial for the optimal performance and longevity of your dehumidifier. Follow these steps carefully.

2.1 Initial Placement and Stabilization

• Place the dehumidifier on a level, stable surface in the desired location (e.g., crawl space, basement).
• Allow the unit to sit upright for a minimum of 2 hours before plugging it in. This allows the refrigerant to settle.
• Adjust the integrated foot pads to ensure the unit is level and stable, minimizing vibration and noise during operation.

Image 2.1: The dehumidifier showing its adjustable foot pads and overall dimensions (15.35"D x 11.2"W x 11.4"H).

2.2 Drainage Options

The Sentinel HD35P offers two drainage methods: gravity drain and pump drainage. Choose the method that best suits your installation environment.

Image 2.2: Illustration of the two drainage methods: gravity drain and pump drainage, with the pump capable of lifting water up to 19.6 feet.

Gravity Drain:

• Ensure the unit is positioned so that the gravity drain outlet is lower than the drainage point.
• Remove the rubber stopper from the side drainage outlet.
• Connect the larger diameter hose (typically provided) to this outlet.
• Direct the hose to a suitable drain, ensuring a continuous downward slope to prevent water backup.
• The "Drain" button on the control panel must be turned off for gravity drainage.

Pump Drainage:

• Plug the side drainage outlet with the rubber stopper.
• Insert the smaller diameter hose (typically provided) into the front drainage outlet.
• Direct the hose to your desired drainage location. The internal pump can lift water up to 19.6 feet vertically.
• Press the "Drain" button on the control panel to activate the pump.

Image 2.3: Example of pump drainage, allowing water to be expelled upwards to a sink or other elevated drain.

3. Operating Instructions

The Sentinel HD35P is designed for user-friendly operation with an intelligent control panel.

3.1 Control Panel Overview

Image 3.1: The control panel displaying humidity, power, continuous mode, pump, and GPP indicators, along with ON/OFF, SET, DRAIN, and GPP MODE buttons.

• ON/OFF Button: Powers the unit on or off.
• SET Button: Adjusts the desired humidity level (25%-80% Relative Humidity).
• DRAIN Button: Activates the internal condensate pump for drainage.
• GPP MODE Button: Switches between RH (Relative Humidity) mode and GPP (Grains Per Pound) moisture content mode.
• Display: Shows current humidity level or error codes.
• Indicators: Power, Continuous (Cont.), Pump, and GPP lights indicate current operating status.

3.2 Setting Desired Humidity

• Press the ON/OFF button to power on the unit.
• Press the SET button to adjust the target humidity level. The display will flash, allowing you to increase or decrease the percentage.
• Once the desired humidity is set, the display will return to showing the current ambient humidity. The unit will operate until the set humidity is reached, then cycle on and off to maintain it.

Image 3.2: The dehumidifier's smart humidity detection and control system, capable of reducing humidity from 95% RH to 45% RH within a functioning range of 25-80% RH and 33.8-110°F.

3.3 Automatic Defrost Function

The unit features an automatic defrost function to prevent ice buildup on the coils, ensuring efficient operation even in cooler conditions. During a defrost cycle, moisture removal may temporarily decrease until the coils are clear.

Image 3.3: Visual comparison highlighting the benefit of automatic defrost over manual defrost for continuous operation.

3.4 Memory Start

In the event of a power outage, the dehumidifier will automatically restart with its previous settings once power is restored.

4. Maintenance

Regular maintenance ensures the efficiency and extends the lifespan of your ALORAIR Sentinel HD35P dehumidifier.

4.1 MERV-1 Filter Maintenance

The MERV-1 filter protects internal components from dust and other particles, while also improving air quality. Regular cleaning or replacement is recommended.

• Inspection: Check the filter regularly for dust and debris buildup.
• Cleaning: The filter can be washed. It is recommended to replace the filter after 2 washes or every 3 months, depending on air quality and usage.
• Replacement: To replace, slide out the old filter and insert a new one.

Image 4.1: Illustration of the easy access for MERV-1 filter maintenance, recommending replacement every 3 months or after 2 washes.

4.2 Condensate Pump Maintenance

If using the internal condensate pump, periodic cleaning of the pump screen and float is necessary to prevent blockages and ensure proper operation.

• Disconnect power to the unit before performing any maintenance.
• Access the pump compartment (refer to the detailed service manual for specific instructions).
• Carefully remove and clean the pump screen and float mechanism. Ensure no debris obstructs the float's movement.
• Reassemble the pump and compartment, ensuring all connections are secure.

5. Troubleshooting

This section addresses common issues you might encounter with your dehumidifier.

5.1 Error Codes

• E4 Error Code: This typically indicates a pump issue.
• Check if the pump screen or float is clogged (refer to Section 4.2 for pump maintenance).
• Ensure the drainage hose is not kinked or blocked.
• Verify that the pump is properly connected and functioning.

5.2 Water Leakage

• Leaking from the unit: This can occur if the pump fails while configured for pump drainage, causing the internal condenser tank to overflow.
• Immediately disconnect power to the unit.
• Inspect the internal pump and drainage connections for loose hoses or missing clamps.
• If the pump has failed, consider switching to gravity drain mode by removing the rubber stopper and ensuring a proper downward slope for the hose.
• Allow the unit to dry completely before attempting to restart or troubleshoot further.
• Drain hose connection issues: Ensure the supplied compression nut and hose are correctly fitted to the unit's nipple. Improper fit can lead to leaks.

5.3 Unit Not Dehumidifying

• Check if the desired humidity level is set higher than the current ambient humidity.
• Ensure the air filter is clean and not obstructed.
• Verify that the unit is not in a defrost cycle.
• Confirm that the unit is receiving power and the fan is operating.

6. Specifications

7. Warranty and Support

ALORAIR provides a comprehensive warranty for the Sentinel HD35P dehumidifier and dedicated customer support.

7.1 Limited Warranty

Every ALORAIR crawl space dehumidifier comes with a 5-year limited warranty. The unit is cETL listed, ensuring compliance with electrical safety standards.

• 6 Month Parts and Labor: Includes shipment charges for replacement parts or unit.
• 1 Year Parts and Labor: Excludes shipment charges to send the defective product back for repair or replacement.
• 3-Year Parts and Labor: Coverage for the refrigeration system only.
• 5-Year Compressor and Coil: Specific coverage for these components.

For additional warranty information or to register your product, please refer to the official ALORAIR website or contact customer support.

7.2 Customer Support

A professional customer support team is available to assist with any questions or issues you may encounter. Contact information can typically be found on the ALORAIR website or in the product packaging.