1. Introduction
Thank you for choosing the QREZAA Thermostatic Piano Key Shower System. This advanced shower system is designed to provide a luxurious and safe showering experience with its innovative features, including precise temperature control, a real-time digital display, and multiple water outlet options. Please read this manual thoroughly before installation and operation to ensure proper use and longevity of your product.
Figure 1.1: Overall view of the QREZAA Thermostatic Piano Key Shower System, showcasing the main unit, rain shower head, and hand shower.
2. Safety Information
Please observe the following safety precautions to prevent injury or damage to the product:
- Ensure all plumbing connections are secure and leak-free before use.
- The thermostatic control is factory-set to a safe temperature of 40°C (104°F) to prevent scalding. Do not attempt to bypass this safety feature.
- Installation should be performed by a qualified professional if you are not experienced with plumbing.
- Do not use abrasive cleaners or harsh chemicals on the product's surface, as this may damage the finish.
- Keep children away from the shower system during installation and initial testing.
3. Package Contents
Verify that all components are present and undamaged before beginning installation. If any parts are missing or damaged, please contact QREZAA customer service.
Figure 3.1: All components included in the QREZAA Shower System package, laid out for inspection.
| Item | Description | Quantity |
|---|---|---|
| 1 | Brass Shower Body (Main Control Unit) | 1 |
| 2 | Rain Shower Head (12-inch) | 1 |
| 3 | Hand Shower | 1 |
| 4 | Bidet Sprayer | 1 |
| 5 | Height-Adjustable Shower Rod | 1 |
| 6 | PVC Hose for Hand Shower | 1 |
| 7 | Bidet Hose | 1 |
| 8 | Liftable Sliding Seat for Hand Shower | 1 |
| 9 | Decorative Covers/Curved Angles | 2 |
| Mounting Hardware (screws, anchors, gaskets) | Set |
4. Setup and Installation
This section provides general guidance for installation. For detailed plumbing instructions, consult a professional plumber or refer to the specific installation guide provided with your product packaging.
4.1 Pre-Installation Checks
- Ensure your wall plumbing is configured for a wall-mounted shower system with appropriate hot and cold water inlets. The spacing of the inlets is critical.
- Confirm that the wall surface is strong enough to support the weight of the shower system.
- Turn off the main water supply before starting any installation work.
4.2 Installation Steps (Overview)
- Mount the Main Control Unit: Secure the main brass shower body to the wall, ensuring it is level and at the desired height. The unit features a large, flat panel that can serve as a storage table.
- Connect Water Inlets: Connect the hot and cold water lines to the corresponding inlets on the main control unit. Ensure a tight, leak-free seal.
- Install Shower Rod: Attach the height-adjustable shower rod to the main unit and secure it to the wall.
- Attach Shower Heads: Connect the 12-inch rain shower head to the top outlet of the shower rod. Attach the hand shower to its hose and connect the hose to the designated outlet on the main unit. The hand shower's position on the rod is freely adjustable.
- Install Bidet Sprayer: Connect the bidet sprayer to its hose and attach the hose to the bidet outlet on the main unit.
- Test for Leaks: Slowly turn on the main water supply and check all connections for leaks. Address any leaks immediately.
Figure 4.1: Product dimensions and adjustable features, including the height-adjustable shower rod (700-1100mm) and the rotatable hand shower.
5. Operating Instructions
The QREZAA Shower System features intuitive controls for a personalized showering experience.
5.1 Thermostatic Temperature Control
The system includes a thermostatic valve that maintains a consistent water temperature, preventing sudden changes due to pressure fluctuations. The safety temperature is locked at 40°C (104°F) to prevent scalding. Adjust the temperature knob to your desired setting. The digital display will show the real-time water temperature.
Figure 5.1: Digital display showing water temperature and usage time, powered by hydroelectric generation. The piano key controls for water outlets are also visible.
5.2 Digital Display
The integrated LED digital display shows the real-time water temperature and the duration of your shower. This display is powered by the water flow itself (hydroelectric power generation) and does not require batteries or external electricity. The display is waterproof.
5.3 Water Outlet Selection (Piano Keys)
The shower system features four independent water outlets, each controlled by a dedicated piano key button. Press the corresponding key to activate the desired water flow. Note: Only one water outlet can be active at a time.
- Rain Shower Head: Provides a wide, rainfall-like spray. Features air injection technology for increased water pressure.
- Hand Shower: Offers three spray modes: Rainfall, Jetting, and Mixed. Select your preferred mode by adjusting the setting on the hand shower head.
- Tub Spout: A hidden spout designed for quickly filling bathtubs.
- Bidet Sprayer: A handheld pressurized sprayer for targeted cleaning tasks.
Figure 5.2: The 12-inch (300mm) high-pressure rainfall shower head in operation, demonstrating its wide coverage.
Figure 5.3: The 3-function hand shower, illustrating its Spray, Rain, and Mixed modes for versatile use.
Video 5.1: Demonstration of the thermostatic shower set in operation, showing the digital temperature display and the activation of different water outlets including the bidet sprayer and hand shower.
6. Maintenance
6.1 Cleaning the Surface
To maintain the brushed finish of your QREZAA shower system, clean regularly with a soft cloth and mild soap or a non-abrasive bathroom cleaner. Rinse thoroughly with water and dry with a soft cloth to prevent water spots. Avoid cleaners containing ammonia, bleach, acids, or abrasives, as these can damage the finish.
6.2 Cleaning Shower Head Nozzles
The rain shower head and hand shower nozzles are made of silicone, designed for easy cleaning. To remove mineral buildup, gently rub the nozzles with your finger or a soft brush. For stubborn deposits, a solution of equal parts white vinegar and water can be applied, allowed to sit for a few minutes, then rinsed off.
7. Troubleshooting
If you encounter issues with your shower system, refer to the table below for common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| No water flow or very low pressure | Main water supply off; clogged nozzles; kinked hose; debris in valve. | Check main water supply; clean shower head nozzles; straighten hose; consult plumber for valve inspection. |
| Inconsistent water temperature | Insufficient hot/cold water supply; thermostatic cartridge issue. | Ensure adequate hot/cold water pressure; contact customer service if issue persists. |
| Digital display not working | Insufficient water flow to power hydroelectric generator. | Increase water flow; check for blockages in water lines. |
| Leaks from connections | Loose connections; damaged gaskets/seals. | Tighten connections; replace worn gaskets/seals. |
| Water not switching between outlets | Piano key mechanism stuck or damaged. | Ensure keys are fully pressed; contact customer service if mechanism is faulty. |
If the problem persists after attempting these solutions, please contact QREZAA customer support for further assistance.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | QREZAA |
| Model Number | 8142 |
| Color | Gray |
| Material | Brass (59A Refined Copper Body) |
| Finish Type | Brushed |
| Number of Handles | 4 (Piano Key Controls) |
| Mounting Type | Wall Mount |
| Item Weight | 15.77 pounds (7.17 Kilograms) |
| Product Dimensions | 37.01 x 16.93 x 5.91 inches |
| Rain Shower Head Size | 12 inches (300mm) |
| Thermostatic Safety Lock | 40°C (104°F) |
| Digital Display Power | Hydroelectric (no batteries required) |
9. Warranty and Support
QREZAA provides exclusive VIP service for every customer. If you find any accessories lost or damaged after receiving your shower system, please contact us in time. Our professional customer service staff will provide you with satisfactory solutions.
For support, please refer to the contact information provided with your purchase or visit the official QREZAA website.
