Multiple Air Curtain Systems - Thermoscreens T Series Operation And Maintenance

11.2 Overheat safety cut-out indication
For electric heated air curtains the Ecopower
PCB includes a fault indication signal for if the
overheat safety cut-out on the electric heater
operates.
Volt free changeover contacts (6A 250VAC
30VDC) can be wired via the 3-way screw
terminal "HEALTHY" (see Fig 15).
Refer to section 18.1: Overheat safety cut-out,
for how to reset a overheat safety cut-out
situation.
11.3 Weather compensation control (Summer/Winter)
To save heating energy on warmer days a simple weather
compensation (Summer/Winter) heat control strategy can
be used. Fit an outdoor air thermostat with volt-free
contacts (supplied by the installer) to a north facing wall.
Use a 2-core cable to connect the outdoor air thermostat to
2-way terminal IN1 on the Ecopower PCB (see Fig 16)
On the Ecopower PCB, set DIP 4 to OFF as per Table 4,
(see section 11.1: Remote switch contacts IN0, IN1).
WARNING: Do not apply any voltage to terminal IN1 as this will damage the Ecopower PCB.
NOTE: To promote increased energy saving a more advanced weather compensation control strategy is available from
Thermoscreens. Using a heating curve, the discharge air temperature of the airstream coming from the air curtain
is controlled against the outside air temperature. Visit the Thermoscreens website for details.

12. MULTIPLE AIR CURTAIN SYSTEMS

For master/slave control, plug and connect units together with Thermoscreen RJ extension cables
(not supplied) as per Figure 17 below. Each air curtain must have its own electrical supply.
T9901012-1-1 UK (v9)
Fig 15
Switch Contact Closed = Heating Enabled (cold day)
Switch Contact Open = Heating Disabled (warm day)
NO NC
HEALTHY
ALARM!
C
Fig 16
Outdoor Air
Thermostat
maximum 8 units
Fig 17
Page | 12