Product Overview

The COIL - HC with a fan is a highly efficient floor convector designed for both heating and cooling applications. It features a 2-pipe connection system and delivers air tangentially into the interior space, providing effective temperature control.

Key Characteristics

• Highly effective convector suitable for heating and cooling.
• 2-pipe connection for combined heating and cooling circuits.
• Air is blown tangentially across the floor, reaching 3 to 4 meters into the room.
• Cooling output approximately 1000 W for a 2-meter length unit.
• Includes an implied condensate outlet.
• Supplied with connection fittings and flexible 3/8" hoses for heat exchanger connection since May 2009.

Dimensions

• Total width: 243 mm
• Construction height: 125 mm
• Length (L): ranges from 900 mm to 3000 mm

Usage

The COIL - HC convector is specifically designed for floor installation to provide both heating and cooling. The tangential air flow creates a gentle cooling effect in summer, especially in areas away from windows.

Technical Specifications

Temperature Equations

Heating:

Q = QN * ((tW - tA) / 50)^m, where m = 1.0455

Cooling:

Q = QN * ((tW - tA) / 17)^m, where m = 0.864

Where:

• Q = heat transfer rate at given temperatures [W]
• QN = nominal heat transfer rate at reference temperatures [W]
• tW = mean water temperature [°C]
• tA = mean air temperature [°C]

Heat Transfer Rates

Heat transfer rates are provided for various lengths (900 mm to 3000 mm), mean water temperatures (50°C to 90°C for heating), and mean air temperatures (15°C to 27°C). The data is categorized by fan speed settings: minimum, medium, and maximum.

For example, at 900 mm length and maximum fan speed, heating output ranges from approximately 470 W (50°C water, 22°C air) to 1565 W (90°C water, 22°C air).

Cooling outputs are similarly detailed, with nominal water temperatures around 9°C and air temperatures from 24°C to 27°C, showing increasing cooling capacity with higher water temperature differences and fan speeds.

Installation and Connection

The convector comes with connection fittings and flexible hoses (3/8") for easy integration with heat exchangers. The design includes a condensate outlet to manage moisture during cooling operation.

Summary of Critical Parameters

• Fan speeds affect heat transfer rates significantly; higher speeds increase capacity.
• Length of the convector directly correlates with heat transfer capacity.
• Temperature differences between water and air are critical for performance calculations.
• Nominal reference temperatures for heating: 70/20°C (water/air).
• Nominal reference temperatures for cooling: 9/26°C (water/air).

Best Practices and Recommendations

• Ensure proper connection using supplied fittings and hoses for optimal performance.
• Consider room layout to maximize tangential air flow effect, especially for cooling.
• Use temperature equations to adjust expected heat transfer rates for varying operating conditions.
• Regular maintenance of fan and condensate outlet recommended to maintain efficiency.