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The Biddle Guide to CA2

Control Options

CA2 air curtains operate by supplying air through a patented discharge rectifier/

grille. The air volume and velocity are adjusted by use of a patented control

damper within the discharge grille assembly. At lower strengths the damper

partially opens to create a greater ‘impulse’ to the air stream, providing a more

energy efficient air curtain. At higher strengths the damper opens fully to provide

an air volume and velocity to deal with more demanding situations.

All CA2 air curtains are delivered with a complete controls package allowing

numerous functions to be monitored and controlled.

Whilst a BMS interface module (whic

h doesn’t allow any user control) is available

on request, units are supplied as standard with:

• a b-touch control panel, providing Manual or Automatic modes of operation

• a low voltage cable, with a RJ11 plug at both ends, for connecting the b-touch

control panel to the air curtain

• a pre-fitted 3-port valve (water heated units only)

• an built-in thyristor controller (electric heated units only)

and typically with an outdoor temperature sensor to facilitate optimum control.

If air curtains are to be linked together to operate in a ‘master/slave’ arrangement

then a low voltage ‘master/slave’ cable, with a RJ11 plug at both ends, is supplied.

Although the low voltage cable is supplied in a 25m length as standard, it can be

provided in a 5m, 15m or 50m length if requested.

b-touch

The new b-touch touchscreen control panel enables the installer and user to

intuitively navigate various menus, and set-up the CA2 air curtain for either

automatic CHIPS or manual control.

Functions such as:

• two on/off time settings per day

• minimum discharge air temperature

• maximum fan speed (used to limit the noise level)

• fan speed

• speed boost

• heating on/off

• use normally open or normally closed contact from BMS or other remote device

• access protection - screen ‘lock’ facility to prevent unauthorised access to settings

• screen brightness

can be set and a display of:

• operating strength

• space temperature

• filter dirty (time based)

• error messages and codes

viewed.

Once the simple set-up procedur

e has been completed the automatic CHIPS control

renders manual operation superfluous. However if the user wishes to use manual

ather than the ener

gy sa

ving automatic CHIPS control then they can manually

turn the unit on/off, turn heating on/off and adjust fan speed.

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