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This document describes the Utek FLAT series of heat recovery ventilation units for residential buildings, designed for indoor air quality and energy saving. The manual provides comprehensive guidelines for installation, use, and maintenance.
The Utek FLAT units are designed to provide heat recovery ventilation in residential buildings. They facilitate the exchange of indoor air with fresh outdoor air while recovering heat from the exhaust air, thereby reducing energy consumption for heating or cooling. The units are equipped with fans to manage airflow and a heat exchanger for efficient heat recovery. They are suitable for maintaining indoor air quality by continuously supplying fresh, filtered air and exhausting stale air.
The units are designed for installation within residential buildings or outdoors, with an ambient temperature range of 0°C to +45°C. The protection degree of the unit is IP20.
Dimensions and Weights: The manual provides dimensions for two models, FLAT 1 and FLAT 2, for various installation types (horizontal floor, ceiling, and vertical wall mounted).
| Unit | A (mm) | B (mm) |
|---|---|---|
| FLAT 1 | 913 | 520 |
| FLAT 2 | 1133 | 580 |
The weight of the units ranges from 31 kg to 42 kg, which is important for handling and installation.
Electrical Specifications: The units comply with several European directives:
Electrical connections require a 1p-n + earth cable. The cable cross-section must be adequate for the maximum absorbed current and protected by a residual current operated circuit-breaker with integral overcurrent protection (RCBOS) (IΔη=0.03A). The power supply voltage must not fluctuate by more than ±5% of the nominal data indicated on the machine plate.
Condensate Drainage: The units are equipped with a condensate drainage system. A drain pipe with a siphon and a minimum slope of 3% is required to prevent water stagnation and ensure proper drainage. An additional siphon is necessary if a BA-AF/AC cold water coil or DX gas coil is installed, with both condensate drains requiring their own trap.
Installation: The Utek FLAT units can be installed in three main configurations:
Minimum space requirements for maintenance are specified for each installation type. Proper ducting, electrical connection, and condensate drainage pipe fastening are crucial for all installations.
Safety: The manual emphasizes several safety precautions:
Handling and Storage:
Start-up: Before starting the unit, it is essential to check for condensation inside and wipe it dry if present, verify filter status, ensure no foreign objects are inside, confirm all components are fastened, manually check that the impeller does not rub, and ensure the inspection door is closed.
Filter Maintenance: Filters need to be replaced periodically. The frequency depends on the level of environmental air pollution (dust, fumes, etc.). The manual includes visual instructions for accessing and replacing filters.
Heat Exchanger Maintenance: The heat exchanger should be cleaned approximately once per operating year. The manual provides visual steps for accessing and cleaning the heat exchanger. A video tutorial for maintenance is available on the Utek website (www.utek-air.it). When handling the heat exchanger, it is crucial to touch only the marked areas.
Troubleshooting: The manual includes a detailed troubleshooting guide for common operational anomalies and specific issues related to the CTR08 / EVO PH / EVO D PH microprocessor control.
Common Anomalies and Remedies:
Microprocessor Control Anomalies (CTR08 / EVO PH / EVO D PH):
All maintenance and cleaning operations must be performed by qualified personnel with the unit disconnected from power.
General| Brand | UTEK |
|---|---|
| Model | FLAT |
| Category | Heating System |
| Language | English |
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