BN Thermic, Commercial and industrial electric heating and controls

HCA Air Curtain reduces heating costs
Fan assisted heaters

HCA Air Curtain

Print this tab
HCA Air Curtain reduces heating costs

HCA Air Curtain reduces heating costs

  • High velocity air curtains providing an invisible barrier between indoor and outdoor environments, reducing heating costs in winter and air conditioning costs in summer 
  • Electric heating elements help eliminate the ‘chill factor’ associated with a high velocity air stream
  • Ideally suited to stores with an open-door policy
  • Remote mounted control box allows air velocity and heat combination to be selected according to the application and conditions
HCA - Sturdy wall-mounting-plate supplied as standard

HCA - Sturdy wall-mounting-plate supplied as standard

HCA - Remote mounted control box for high/low airflow and heat

HCA - Remote mounted control box for high/low airflow and heat

Range

Model Number Length (mm) kW Airflow (m³/h)
    Low High Low High
HCA-09 1113 4.5 9.0 1444 1879
HCA-13  1621 6.75 13.5 2441 2617
HCA-18  2121 6.0  18.0 3834 4100

Controls

All HCA air curtains are supplied with a control box for remote mounting.
Where required select a thermostat from the following or click on the ‘control’ tab for more options.

Model Description
RST-IN Standard room thermostat 10A
RST-TP Tamperproof thermostat 20A
HC-T2 Tamperproof thermostat (industrial grade)

                    

                     

                    

                      

Technical Specification

Colour

White RAL9010 satin finish

Finish

Epoxy polyester powder coating

Construction

1mm steel case

 

Aluminium outlet grille

Heating Element

Metal sheathed elements with spiral wound cooling fins

Built-in Control Components

Factory installed 230V fused control circuit

 

Factory installed contactors

Remote Control Components

Control box provided for remote mounting

 

Optional remote wall-mounted thermostatic control (suitable terminals are provided in the control box)

Overheat Protection

Two ‘high’ and two ‘high-high’ over-temperature devices fitted

Installation

Wall-mounted using the mounting plate provided or suspended from drop rods (4 x M6 threaded holes provided)

Recommended Mounting Height

2.5m to 4m

Maximum operating ambient temperature

30°C

Guarantee

2 year

Performance Data

Model

Voltage

kW

Airflow (m³/h)

Noise Estimate (dB)

 

 

High

Low

High

Low

High

Low

HCA-09

400/3N

9.0

4.5

1879

1444

55

47

HCA-13

400/3N

13.5

6.75

2617

2441

59

55

HCA-18

400/3N

18.0

6.0

4100

3834

57

56

Physical Data

Model

Dimensions (mm)

Weight (kg)

 

Length

Depth

Height

 

HCA-09

1113

265

254

19.6

HCA-13

1621

265

254

25.4

HCA-18

2121

265

254

31.0

 

Features and Benefits

Feature Benefit

Exceptionally high air volume flow rate

Provides a reliable barrier between indoor and outdoor environments with mounting heights up to 4m

Reduces the costs of heating in winter and air conditioning in summer

Minimises the ingress of pollutants and insects

Electric heating elements

Helps offset the cooling effect of high velocity air movement whilst contributing to the heating of the indoor environment

Heavy gauge steel construction with epoxy paint finish

Built to withstand the rigors of continuous use in demanding environments

Wall-mounting plate supplied as standard with threaded holes for drop-rod suspension also provided

Choice of mounting options

Control box for remote mounting provided

Provides 5 heat and airflow combinations

Easy connection between the control box and a choice of remote mounted thermostats

Enhances economy and prevents unwanted temperature build-up in confined areas

Auto-reset and manual reset over-temperature devices

Safety features, ensuring that the heater is switched off should the air flow become obstructed

Safety grilles on inlet and outlet

Prevents personnel from touching fan blades or heating elements

Metal sheath tubular heating element

Extended heater life when compared with open coil style elements

 

How it Works

HCA high capacity air curtains are mounted above doorways and are designed to provide an invisible barrier between indoor and outdoor environments.  The HCA range is well suited to stores with an open door policy.  By creating this barrier, the HCA air curtain will help reduce heating costs in winter and air conditioning costs in summer, without impeding foot traffic. The HCA will also minimise the ingress of pollutants and insects

The HCA range is suitable for installation at heights up to 4m and can be mounted using the wall-mounting plate provided or by means of drop-rods.

In cooler conditions, the ‘chill factor’ associated with a high velocity air stream can be uncomfortable.  The HCA air curtains are therefore fitted with electric heating elements which warm the airstream thereby offsetting the ‘chill factor’ and contributing to a building's heating requirement.

The remote mounted control box supplied with every HCA air curtain allows the user to select the exact combination of air velocity and heat output to suit the application and conditions.  The control box also allows a wall-mounted thermostat to be added to the control circuit thus enhancing economy and preventing an unwelcome temperature build-up in confined spaces.  When the thermostat’s set-point is reached the heating elements will be isolated whilst the fan continues to operate.  Click on the controls tab to review thermostat options.

 

 

 

An HCA Air Curtain reduces heating costs in Winter
and Air conditioning costs in Summer

 

 

 

 

 

 

Controls

Every HCA air curtain is supplied with a control box for remote mounting.  The control box is hard wired to the air curtain and provides the following settings.

  • On
  • Off
  • Low airflow/No heat
  • High airflow/No heat
  • Low airflow/low heat
  • High airflow/low heat
  • High airflow/high heat
HCA Control box

HCA Control
box

Please note the control system will not allow the selection of low airflow/high heat

The control box also allows a remote mounted thermostat to be incorporated into the control system.  Once the thermostat’s set-point is reached, the heating elements will be isolated with the fan continuing to operate.

Here is a summary of the most common thermostats:

 

Adjustable wall-mounted thermostat (commercial grade)

RST-IN Commercial Room Thermostat

RST-IN

Model: RST-IN

RST-IN, BN Thermic’s standard, commercial grade thermostats provide accurate control and allow easy adjustment of temperature set-point. 

 

 

Tamperproof wall-mounted thermostat (commercial grade)

RST-TP Tamperproof Thermostat

RST-TP

Model: RST-TP

To prevent wilful or casual adjustment of temperature set point, we recommend the RST-TP tamperproof thermostat.  The set-point adjustment knob is concealed under the thermostat’s cover and optional ‘shear-off’ fixing screws are provided for complete security.

 

 

Tamperproof wall-mounted thermostat (industrial grade)

HC-T2 Hard Case Thermostat

HC-T2
Hard Case
Thermostat

HC-D Tamperproof Tool

HC-D
Tamperproof
Tool

Model: HC-T2

BN Thermic’s famous Hard Case industrial and public area thermostats provide rugged tamperproof and vandal resistant control.  Hard Case thermostats require a special tool to gain access the temperature adjustment knob.

 

 

Selection

If you would like the experts at BN Thermic to select a suitable air curtain for your application, please click here to access our enquiry form.  Simply provide as much information as you have available and we will respond with a detailed proposal.

ENQURY FORM

An HCA air curtain is designed for installation above doorways in commercial and industrial premises providing an invisible but effective barrier between internal and external environments.  When the correct air curtain is selected benefits will include the reduction of heating costs (winter), reduction in air conditioning costs (summer) as well as minimising the ingress of pollutants and insects.

There three considerations in making the correct selection:

 

Height

The optimum mounting height for the HCA range is between 2.5m and 4m

 

Door Width

To provide an effective barrier, the selected air curtain should be longer than the width of the door.  The following table can be used as a guide:

 

Model Number

Maximum Door Width

HCA-09

1.0m

HCA-13

1.5m

HCA-18

2.0m

Control

Every HCA air curtain is supplied with a control box for remote mounting.  The control box is hard wired to the air curtain and provides the following settings.

  • On
  • Off
  • Low airflow/No heat
  • High airflow/No heat
  • Low airflow/low heat
  • High airflow/low heat
  • High airflow/high heat

 

In some installations the use of a remote mounted thermostat is recommended.  The thermostat should be connected to terminals provided in the control box and, when the thermostat’s set-point is reached, will switch off the heating elements while the fan continues to operate.  The use of a thermostat will enhance economy and prevent the unwelcome build-up of high temperatures in confined areas.

Here is a summary of the most common thermostats:

 

Adjustable wall-mounted thermostat (commercial grade)

BN Thermic’s standard, commercial grade thermostats provide accurate control and allow easy adjustment of temperature set-point. 

RST-IN:  +5°C to +30°C

 

Tamperproof wall-mounted thermostat (commercial grade)

To prevent wilful or casual adjustment of temperature set point, we recommend the RST-TP tamperproof thermostat.  The set-point adjustment knob is concealed under the thermostat’s cover and optional ‘shear-off’ fixing screws are provided for complete security.

RST-TP: +5°C to +25°C

 

Tamperproof wall-mounted thermostat (industrial grade)

BN Thermic’s famous Hard Case industrial and public area thermostats provide rugged tamperproof and vandal resistant control.  Hard Case thermostats require a special tool to gain access the temperature adjustment knob.

HC-T2: 0°C to +25°C

HC-D: tamperproof tool

Heat Calculator

Stage 1 of 5 » Building dimensions

This calculator is provided as a quick and easy means of estimating heat loss from a building. This is a key step in determining the kW output required from a heating system.

Width m
Length m
Height m
Building dimensions

( * ) this data is compulsory

next >>>

Stage 2 of 5 » Environmental Data

Minimum outdoor temperature
(Typically -5°c in the UK)
°C
Required indoor temperature
(Typically 20°c in commercial buildings)
°C
Minimum temperature in the next room
(Input temp only if there is an adjoining room)
°C

Heat losses to an adjoining room or building are usually lower than to the outside world. To allow the calculator to take this into account we have requested the minimum expected air temperatures of an adjoining room. For a stand-along building just leave this field blank.

( * ) this data is compulsory

<<< back next >>>

Stage 3 of 5 » Construction material

U values (W/m²/°c) are a means of determining how well construction material can contain hear. For example a very well insulated wall will have a much lower U value than an un-insulated wall.

All applicable U Values must be completed (refer to guide for assistance)

Input the areas for inside walls, doors and windows if applicable otherwise leave these fields blank.

  Area (m²) U-value
W/m²/°C
Outside wall
Inside walls
Roof
Floor
Windows
Door m ²

Guide to typical U values (W/m²/°C)

External Walls
9" Sold Brick 2.2
11" Brick-block cavity (no insulation) 1.0
11" Brick-block cavity (insulated)) 0.6
Internal Walls
4.5" Brick/plaster 2.2
Plasterboard/ 4" studding/plasterboard 1.8
Floor
Solid concrete 0.8
Suspended timber 0.7
Roof
Corrugated asbestos 5.7
4" solid concrete 4.0
Flat roof 25mm insulation 0.9
Flat roof 50mm insulation 0.6
Glazing
Single glazing 5.6
Double glazing (air cavity) 2.8
Double glazing (argon gas cavity) 2.6
Double glazing low E glass (air cavity) 1.8
Double glazing low E glass (argon gas cavity) 1.5
Door
Timber 2.4
Insulated Roller Shutter 1.4
Un-insulated Roller Shutter 4.0

Stage 4 of 5 » Ventilation

Air changes per hour
(refer to guide for assistance)

The following figures apply to naturally ventilated buildings only. If a building has fan forced ventilation then the number of air changes per hour will be much higher.

Building Typical Air Changes per Hour
Shop 1
Office 0.9
School 0.7
Warehouse 0.5
Hall 0.8

Stage 5 of 5 » Total Heat Loss Calculation

Heat calculation based on the information you've given:

 

HCA

Instructions

Instructions and specification sheets are available for BN Thermic’s entire range of products, including HCA Air Curtain.

HCA

Images

Select an image to zoom in

HCA Air Curtain reduces heating costs

HCA Air Curtain reduces heating costs

HCA - Sturdy wall-mounting-plate supplied as standard

HCA - Sturdy wall-mounting-plate supplied as standard

HCA - Remote mounted control box for high/low airflow and heat

HCA - Remote mounted control box for high/low airflow and heat

A HCA installed in a Library in Barnsley.

A HCA installed in a Library in Barnsley.

ENQUIRY FORM

Please provide as much information as possible

Industrial and Commercial Heating Enquiry Form

Please provide as much information as possible

Dimensions

m
m
m

Glazing

m2
m2
°C
°C

Underfloor Heating Enquiry Form

Please provide as much information as possible

Dimensions

Pipe freeze Protection Enquiry Form

Please provide as much information as possible