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STIEBEL ELTRON HDB-E12Si Instantaneous Water Heater (3-Phase Power Supply)
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The STIEBEL ELTRON HDB-E12Si Instantaneous Water Heater is a high-performance, electronically controlled unit engineered for efficient and immediate hot water supply. Operating on a 3-phase power supply, this compact water heater provides robust performance with power ratings of 10.7 kW (at 400V) or 9.7 kW (at 380V). Its bare wire heating system, encased in pressure-tested copper, ensures rapid heating and long-term durability. Equipped with advanced electronic safety features, the HDB-E12Si offers reliable and safe operation for a variety of applications.
Key Features
- **Instantaneous Hot Water:** Provides immediate hot water with flow rates ranging from 5.6 to 12.3 litres per minute (model dependent).
- **Electronic Control:** Features precise electronic control for consistent temperature management, up to 55℃.
- **Efficient Heating System:** Utilizes a bare wire heating system with a pressure-tested copper casing for rapid heat-up times and enhanced longevity.
- **Advanced Safety:** Incorporates a comprehensive electronic safety system with air detection and a temperature cut-off device for reliable protection.
- **Durable Design:** Built with a robust construction, ensuring a long operational lifespan.
- **High Protection Level:** Certified with IP25 protection, making it hoseproof and resistant to splashing water.
- **Compact & Lightweight:** Space-saving design with dimensions of 470 x 225 x 117 mm and a weight of just 3.6 kg, allowing for flexible installation.
- **Centralized Outlet Applications:** Ideal for supplying hot water to multiple outlets from a single unit.
- **Optional Remote Control:** Compatible with a wired comfort remote control (optional accessory) for convenient temperature adjustment.
Technical Specifications
- **Model:** HDB-E12Si
- **Power Rating:** 10.7 kW (400V) / 9.7 kW (380V)
- **Power Supply:** 3-Phase
- **Hot Water Flow Rate:** 5.6 – 12.3 l/min (model dependent)
- **Minimum Flow Rate:** ≥2.3 l/min
- **Maximum Temperature Adjustment:** 55℃
- **Working Pressure:** 10 Bar
- **Pipe Size:** 15mm (G1/2″)
- **Protection Level:** IP25 (Hoseproof)
- **Weight:** 3.6 kg
- **Control Unit:** Electronic Control
- **Heating System:** Bare wire heating system
- **Safety Features:** Electronic safety system with air detection, Electronic safety system with temperature cut-off device
- **Outlet Applications:** Centralized
- **Dimensions (H x W x D):** 470 x 225 x 117 mm
The product information above is for reference only; everything is subject to the brand's official website.
Installation
Electric Water Heaters
Standard Installation
| Item | Charge |
|---|---|
| Site inspection (non-refundable) | Installed by agent; charges apply separately |
| Instant type (three-phase or single-phase) | Installed by agent; charges apply separately |
| Shower type | Installed by agent; charges apply separately |
| Pressure type, 6.5 gallons or below | Installed by agent; charges apply separately |
| Pressure type, 10 gallons or above | Installed by agent; charges apply separately |
| Horizontal type | Installed by agent; charges apply separately |
| Remove and dispose of old unit | Installed by agent; charges apply separately |
Standard Installation Scope
| Type | Included |
|---|---|
| Instant type | Includes 3 ft exposed wiring Includes 4 ft plastic-coated hot/cold copper pipe |
| Shower type | Includes 10 ft exposed electrical cable Includes 4 ft plastic-coated hot/cold copper pipe and 2 fittings |
| Pressure type | Includes 10 ft exposed electrical cable Includes 3 ft plastic-coated hot/cold water pipe and 7 fittings |
Electric Water Heater Additional Installation Charges (For Reference Only)
| Item | Charge |
|---|---|
| Plastic-coated hot/cold copper pipe (per ft) | HK$30 |
| White discharge-valve copper pipe (within 8 ft) | HK$100 |
| Copper pipe fitting (each) | HK$30 |
| Pressure reducing valve | HK$400 |
| Add tee water connection if no water inlet is available | HK$200 |
| Install one electrical point (includes 15 ft cable and circuit breaker) | HK$800 |
| Install branched electrical point (includes 10 ft cable) | HK$250 |
| Extend power cable (per ft) | HK$20 |
| Extend power cable (three-phase ×4, per ft) | HK$80 |
| Staircase handling (per floor per item) | HK$30 |
| Tung Chung and Ma Wan installation surcharge (per order) | HK$100 |
| Discovery Bay installation surcharge (per order): 3 units or fewer | HK$300 |
| Discovery Bay installation surcharge (per order): more than 3 units | HK$600 |
Delivery Charges
Basic Delivery
| Item | Charge |
|---|---|
| Delivery (per item) | HK$100 |
| Tung Chung, Ma Wan and Discovery Bay surcharge (per delivery) | HK$100 |
| Carrying distance to delivery location exceeds 100 m | Additional charges apply |
Note: Charges may differ if delivery is arranged by an agent. Please contact us for details.
Staircase Handling
Except for village houses, where 14 steps count as one floor, other buildings count 10 steps as one floor. The first 5 steps are free of charge.
| Item | Charge |
|---|---|
| General appliances | HK$30 / item / floor |
| Window AC, 3/4 HP to 1 HP | HK$30 / item / floor |
| Window AC, 1.5 HP to 2.5 HP | HK$50 / item / floor |
| Window AC, 3 HP or above | To be discussed |
| Split AC, refrigerator, washing machine | HK$50 / item / floor |
| Built-in oven, steam oven, chimney hood, built-in / freestanding dishwasher | HK$50 / item / floor |
Note: Charges may differ if delivery is arranged by an agent. Please contact us for details.
General Notes
- The above installation fees are quoted for work handled by BBE’s appointed contractor / appointed registered electrical contractor.
- Charges may differ if delivery/installation is handled by other agents or contractors. Please contact us for details.
- A compliant power supply must be provided by the customer near the appliance.
- Items not listed in this fee schedule must be discussed with the technician.
- The installation location must be confirmed by the customer. Relocation or reinstallation after installation at the customer’s request will be quoted separately.
- Installation schedule: Hong Kong Island (Tue, Thu, Sat); Kowloon (Mon to Sat); New Territories (Mon to Sat).
- Delivery coverage excludes outlying islands, restricted areas and overseas locations.
- Delivery or installation is generally arranged during office hours. For non-office hours such as evenings or public holidays, please check feasibility in advance.
Why us?
Why Choose BBE?
The trusted choice for more than 300,000 households in Hong Kong. We focus on exceptional quality, professional guidance, and a more peace-of-mind shopping experience.
Multiple Large Showrooms
Experience in person · Compare on the spot
Visit our flagship showrooms in Mong Kok, Causeway Bay, and Tuen Mun. Explore more than 1,000 European, American, and Japanese kitchen appliances, and get on-site recommendations from professional advisors for selection and installation.
Mong KokCauseway BayTuen Mun
100% Official StockNo parallel imports · Clear warranty coverage
All appliances are official products from the Hong Kong authorised distributors. Enjoy at least one-year manufacturer warranty and a 7-day replacement guarantee for faulty items, for added peace of mind after purchase.
Real Customer Service · Dedicated Follow-upOrder confirmation · Peace of mind follow-up
Each order is handled by a dedicated team who contacts and confirms details to ensure smooth delivery and installation. You can also reach real customer service via WhatsApp or phone call.
1-to-1 Expert ConsultationInstant support · Professional answers
Get real-time professional support via WhatsApp. Whether you need help comparing appliance specifications, checking dimensions, or answering installation questions, our expert team will respond promptly.
Award-WinningRecognized by brands · Valued service
Our service quality is recognized by the industry and top brands. We have received the TGC Sales Gold Award from the Gas Company and Daikin’s Diamond-level “Daikin Star” honor, along with multiple partner awards and distributor recognitions.
Safe Shopping · Professional InstallationOne-stop service · More peace of mind
Our website uses SSL encryption, supports multiple electronic payment methods, and provides a one-stop professional delivery and installation service, making the entire shopping process more convenient and reassuring.
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