

Description
Zehnder Caladair Silvertop 23 First Eco Commercial MVHR Unit
Product Part Number:
- Caladair SILVERTOP 23 First Eco - CAL09
Key Features
- 🌬️ Airflow zoning options available
- 🔥 Highly efficient counter-flow plate energy exchanger
- ⚡ Low-energy EC motors with heat & speed protection
- 🏡 Compact design & small footprint
- 🌍 Indoor installation
- 🔄 90%+ heat recovery efficiency
- 🔧 Easy, quick, and airtight installation
Additional Zoning Options
Optional extras for zone control via Caladair Commercial Units:
- 🏃 PIR sensor – Detects occupation & increases airflow
- 🌱 CO₂ sensor – Detects high CO₂ levels & increases airflow
- 🔘 Wall switch – Manually increase airflow
- 💡 Light sensor – Activates airflow when lights are on
- 🏢 BMS integration – Control zones & unit via BMS system
💡 Dampers can be set to various airflow rates when open or closed. 📞 For more info, contact us at 028 2827 5150.
Heating & Cooling Accessories
- ❄️ Electric Preheater – Prevents frost buildup
- 🔥 Electric Post Heater – Increases room temperature
- 💧 Water Heater – Can be used as a pre or post heater
Energy Exchanger
- Highly efficient aluminum counter-flow plate exchanger 🔄
- Designed for lifetime use 💪
- 90%+ heat recovery efficiency 🌡️
Motors
- Two low-energy backward curved EC motors ⚡
- Integrated heat & speed protection 🔧
Installation
- 🏠 Indoor installation
- Compact design & small footprint
- Top connections via double-lip circular connectors (except size 52)
- Easy, quick, and airtight installation (no adapters required)
Dimensions
Model | Length (mm) | Width (mm) | Height (mm) |
---|---|---|---|
Silvertop 23 | 1735 | 1065 | 1340 |
Ductwork Insulation Recommendations
For best performance, we recommend using Metal Spiral Ducting and Fittings. To ensure airtightness and durability:
- Apply duct sealant to male fittings.
- Push components together.
- Seal the joint with aluminum duct sealing tape.
✅ Ducting in cold areas (e.g. loft spaces) must be insulated with at least 25mm thick material with thermal conductivity ≤ 0.04W/(m·K) to prevent condensation. ✅ Intake and exhaust ducts should be insulated even if there is no loft space. 🚫 Bubble wrap insulation is not compliant with building regulations.
Accessories
Complete your ventilation system with a range of controls, sensors, silencers, and valves/diffusers.
Guarantee
✅ 2-Year Parts Guarantee
Important Information
These units are built to order. For lead times and further inquiries, please contact our sales team at 📞 028 2827 5150.