Thermoscreens T Series Installation guide

T9901012-1-1 UK (v9) Page | 1
INSTALLATION, OPERATION AND
MAINTENANCE INSTRUCTIONS
English
T Series.
Recessed Range

T9901012-1-1 UK (v9) Page | 2
1. CONTENTS......................................................................................................................................2
2. ELECTRICAL SAFETY.....................................................................................................................3
3. SPECIFICATIONS............................................................................................................................3
4. INTRODUCTION ..............................................................................................................................4
5. DELIVERY CONTENTS ...................................................................................................................5
6. TOOLS REQUIRED..........................................................................................................................5
7. INSTALLATION ................................................................................................................................6
8. LPHW MODELS ...............................................................................................................................9
9. REMOTE CONTROL INSTALLATION...........................................................................................10
10. REMOTE CONTROL SETTINGS...................................................................................................10
11. EXTERNAL CONTROLS................................................................................................................11
12. MULTIPLE AIR CURTAIN SYSTEMS............................................................................................12
13. SYSTEM CONFIGURATION..........................................................................................................13
14. FAN SPEED SELECTION..............................................................................................................14
15. REMOTE CONTROL OPERATION................................................................................................15
16. COMMISSIONING THE SYSTEM..................................................................................................17
17. SIGN OFF.......................................................................................................................................17
18. FAULT CONDITIONS.....................................................................................................................18
19. SERVICE & MAINTENANCE .........................................................................................................19
20. WARRANTY ...................................................................................................................................20
APPENDIX 1A — DIMENSIONS OF T RECESSED AIR CURTAIN WITH STANDARD RECESS
GRILLE......................................................................................................................................................21
APPENDIX 1B — DIMENSIONS OF T RECESSED AIR CURTAIN WITH WIDER RECESS GRILLE...22
APPENDIX 2A — WIRING DIAGRAM T1000E9R, T1000E12R, T1500E12R AND T1500E18R............23
APPENDIX 2B — WIRING DIAGRAM T2000E18R.................................................................................24
APPENDIX 2C — WIRING DIAGRAM T2000E24R.................................................................................25
APPENDIX 2D — WIRING DIAGRAM T1000WR, T1500WR and T2000WR .........................................26
APPENDIX 2E — WIRING DIAGRAM T1000AR, T1500AR and T2000AR.............................................27
20. DECLARATION OF CONFORMITY...............................................................................................28
1. CONTENTS
Page

T9901012-1-1 UK (v9) Page | 3
Electrical Supply and Wiring to the Air Curtain
All electrical wiring and connections MUST be carried out by a competent qualified electrician in
accordance with the latest edition of the IEE wiring regulations and/or local statutory regulations.
A 1 phase or 3 phase local isolator having a contact separation of at least 3mm on all
poles must be fitted in the electrical supply to the air curtain and located in an accessible
position adjacent to the unit.
The appliance must be connected by cables having an appropriate heat resistant
temperature rating.
All supply cables, circuit breakers and other electrical installation equipment must be
correctly sized for the air curtain model being installed; see section 3: Specifications.
Models operating on 3 phase electrical supply - see section 3: Specifications - require a
neutral connection (3N~).
A 25mm size cable gland or conduit connector of IP21 rating or above should be used for
the Electrical Supply into the air curtain.
See Wiring Diagram for connecting electrical supply and control cables to the air curtain.
The air curtain must be earthed.
Air Curtain
Model No
Electrical
Supply
(V/ph/Hz)
Rated
Electrical
Power Input
(kW)
Rated
Current
per phase
(A)
Heat Output
[Low/High]
(kW)
Weight
(kg)
T1000AR 230/1/50 0.25 1.1 N/A 27
T1500AR 230/1/50 0.35 1.7 N/A 40
T2000AR 230/1/50 0.45 2.0 N/A 50
T1000WR 230/1/50 0.25 1.1 6.0 / 12.0 29
T1500WR 230/1/50 0.35 1.7 9.0 / 18.0 42
T2000WR 230/1/50 0.45 2.0 12.0 / 24.0 53
T1000E9R 400/3/50 9.25 14.1 6.0 / 9.0 28
T1000E12R 400/3/50 12.25 18.7 6.0 / 12.0 28
T1500E12R 400/3/50 12.35 18.9 6.0 / 12.0 41
T1500E18R 400/3/50 18.35 27.9 9.0 / 18.0 41
T2000E18R 400/3/50 18.45 28.1 12.0 / 18.0 52
T2000E24R 400/3/50 24.45 36.8 12.0 / 24.0 52
2. ELECTRICAL SAFETY
3. SPECIFICATIONS
Table 1

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Established in the 1960s, Thermoscreens is a leading air curtain manufacturer that exports to over 60
countries worldwide.
As with all our products, the T recessed range of air curtains are designed with energy efficiency in mind.
T models suffixed ER, WR or AR are designed to be recess mounted inside a building and located
horizontally over a doorway.
They must not be installed on the outside of a building.
Please complete the following details for your reference:
Date of Purchase
Place of Purchase
Serial Number
Proof of purchase is required to make a claim under warranty.
Thermoscreens Ltd
St. Mary’s Road
Nuneaton
Warwickshire
England
CV11 5AU
Email: sale[email protected] — http://www.thermoscreens.com
Tel: [phone] — Fax: [phone]
4. INTRODUCTION

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The following items are supplied in the box at delivery.
The following tools are required for installation:
Flat blade screwdrivers
Pozi head screwdrivers
10mm spanner
Adjustable spanner
Electric drill
Ladders
Appropriate lifting equipment
Appropriate tools for cutting ceiling
aperture
5. DELIVERY CONTENTS
6. TOOLS REQUIRED
NOTE: If any parts are missing or damaged contact your place of purchase.
T Recessed Air Curtain Ecopower Remote Control
(for Electric and Water Heated units)
The recessed grille is
supplied separately
Supplied with 6m
RJ Control Cable
Outdoor Air Thermostat
(Optional – supplied by Installer)
3-port control valve
(for water heated units)
Fitted in pipework to
air curtain b
y
installer
Used for simple weather
compensation control
(disables heating on a warmer day)
Remote Control Switch
(for Ambient units)
Recessed Grille

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The air curtain is designed to be recessed within ceiling voids or bulkheads within a building and
located horizontally over a doorway. It must not be installed outside of the building.
7.1 Location
Mount the air curtain above and as close to the doorway as
possible, with:
the recessed grille not more than 3m above floor
level
the air discharge (see 1, Fig 1) section of the
recessed grille nearest the doorway and the air inlet
section (see 2, Fig 1) furthest from the doorway
Beware of doorway top edges, structural beams, door
opening/closure devices, etc., which may interfere with the
air stream and affect the location of the unit.
7.2 Ceiling Suspension
Step 1 Depending on whether a standard or wider width
recessed grille is used, cut an aperture in the ceiling
to the dimensions in Appendices 1. Cut notches, if
necessary, to clear screws in the air curtain casing.
Step 2 Fix M10 threaded rods (not supplied) through the 2
holes at each end in the top casing (see Fig 2). Feed
the rods through the casing and attach to fixing
brackets near the bottom of the unit (see Fig 3,
looking up into the air curtain). Use M10 lock-nuts
either side of fixing brackets to secure hanging rods.
An additional threaded rod is fitted on a 1.5m unit with
two extra threaded rods fitted on a 2m unit, see
Appendices 1.
7. INSTALLATION
NOTE: For the air curtain to work well the doorway should be less than the width of the airstream.
Fig 1
NOTE: For LPHW models, pipework will need to be installed
above the curtain. Allow sufficient access and height
clearance within the ceiling void to do this. Fig 2
NOTE: Do not let the hanging rods come below the bottom
of the unit casing or they may prevent the recessed
grille fitting properly.
1
2
Fig 3

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Fig 5a; standard width grille Fig 5b; wider width grille
25 - 50
25 - 50
CEILING LEVEL CEILING LEVEL
Bottom surface of recessed
air curtain casing
M10 hanging rods
RECESSED AIR CURTAIN
Step 3 If you are installing model T1500R, fit a 5th M10 threaded rod into the hanging point in the middle
of the unit. For model T2000R, fit 5th and 6th threaded rods, see Appendices 1 and Fig 4.
Step 4 Secure each rod to a suitable structure that can support the weight of the unit (see section 3:
Specifications for weights).
Step 5 Adjust the height of the unit on its hanging rods so the bottom surface of the casing goes
between 25-50mm up into the ceiling as shown in Fig 4. Ensure the unit is level.
7.3 Attaching the recessed grille to the air curtain
The recessed grille consists of:
Metal frame
Hinged standard or wider width inlet/discharge grille
Slotted fixing brackets
There are 4 fixing slotted brackets on the T1000R with 6 brackets fitted on T1500R and T2000R (see
Fig 5a and Fig 5b).
Fig 4
WARNING: It is the sole responsibility of the installer to ensure that the fixing locations and
suspension system used are suitable for the air curtain being installed.
Centre brackets
for 1.5m and 2m
More angled bracket
Less angled
bracket
Centre brackets
for 1.5m and 2m

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Fix the grille as follows:
Step 1 Open the hinged inlet grille using a flat bladed
screwdriver to release the quarter turn fasteners
(see Fig 6). There are two fasteners on the
T1000R unit and three fasteners on T1500R and
T2000R units. Before lifting the grille frame into
position, remove four (six on T1500R/T2000R)
M6 bolts fitted on the inside edge of air curtain.
Step 2 Make sure the grille will go the correct way
around (discharge nearest to doorway). Offer
the recessed grille up through the cut-out in
the ceiling.
Step 3 Using the M6 bolts removed in Step 1, secure
grille by fixing each bolt through the slotted
brackets as shown in Fig 8. For illustration
purposes Fig 8 details a wider recess grille.
With the hinged grille open, adjust the height of
the grille frame via slots in each bracket, so
frame is snug fit against the ceiling with no
gaps all the way around.
Step 4 To stop discharge air re-circulating within the
air curtain a sliding separator will need
adjusting up or down (see Fig 9). To adjust
plate release M6 bolts either end, extend the
slide plate so that it will touch the topside of
the grille along its whole length and tighten the
bolts. It will be necessary to close the hinged
grille core to gauge where the separator plate
should be fitted.
Step 5 Once the above steps are complete the
hinged grille core can be closed and all the
quarter turn fasteners tightened up.
Fig 9
Fig 6
Fig 8
NOTE: Open the hinged grille core to gain access to
electrical connections, and for servicing and
maintenance.
Fig 7
Fig 10

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For LPHW models ensure that water isolation valves are fitted in the flow and return pipework
adjacent to the air curtain and connected correctly as shown in the diagram in Appendix 1.
For the design of the water pipework system and pump, water flow rates and pressure drops for
maximum heat output of the air curtain are given in Table 2 below.
Air Curtain Water Flow Rate
(l/min at 82/71°C) Water Pressure Drop (kPa)
T1000WR, 2-row (12kW) 15.6 16.1
T1500WR, 2-row (18kW) 23.4 10.4
T2000WR, 2-row (24kW) 31.2 16.3
Air Curtain Water Flow Rate
(l/min at 60/40°C) Water Pressure Drop (kPa)
T1000WR, 3-row (12kW) 8.6 8.3
T1500WR, 3-row (18kW) 12.9 18.2
T2000WR, 3-row (24kW) 17.1 15.0
The installer must connect the 3-port valve in the heating pipework as shown in Figure 11 below:
22mm pipe
AB
A/B
22mm pipe
22mm pipe
22mm pipe R
E
T
U
R
N
F
L
O
W
8. LPHW MODELS
Fig 11
Table 2
NOTE: Water Pressure Drop is across the flow and return pipework to the air curtain and includes for the
coil fitted inside the unit and the valve fitted in the heating pipework to the unit.
Water flow rates and pressure drops at different water temperatures can be calculated using the
Thermoscreens coil calculation programme. Visit the Thermoscreens website for details.
wire valve to pcb inside air curtain

T9901012-1-1 UK (v9) Page | 10
Mount the remote control unit in a convenient position directly to the wall or onto a switch box.
9.1 Wall mounting
Step 1 Using a screwdriver undo the screw on the top of the remote control
case and pull the back case away (see Fig 12).
Step 2 Feed one end of the RJ control cable through the back case, secure it,
then screw the back case to the wall using suitable fixings (not
supplied).
Step 3 Connect the RJ plug to the RJ socket on the PCB in the remote control.
Step 4 Refit the front case.
9.2 Switch box mounting
Step 1 Using a screwdriver undo the screw on the top of the remote control case and pull the back
case away (see Fig 12).
Step 2 Feed one end of the RJ control cable through the switch box, feed and
secure the RJ control cable through the back case and secure back
case to switch box using 2 x M3.5 screws (not supplied) (see Fig 13).
Step 3 Connect the RJ plug to the RJ socket on the PCB in the remote control.
Step 4 Refit the front case.
On the back of the PCB inside the Ecopower Remote Control you will find four DIP switches that
provide the following optional features, see Table 3.
DIP Feature Explanation Default Notes
1 Reset on power-up On restoring power after an
electrical interruption all Remote
Control settings are retained
ON WARNING! – Fans start
on their own after power
is restored
2 Stop fan on cold Fans are switched off when
heating level is achieved (AUTO
mode only)
OFF
3 Never blow cold Air curtain always heats in
AUTO mode OFF Will not go to ambient mode
4 Room air
temperature control Enables the room air sensor in the Remote Control OFF Disables all other temperature sensors
9. REMOTE CONTROL INSTALLATION
10. REMOTE CONTROL SETTINGS
NOTE: For optional remote control settings, see section 10.
Table 3
Fig 13
Fig 12

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11.1 Remote switch contacts IN0, IN1
Terminals IN0 and IN1 on the Ecopower PCB inside the air
curtain can be used to provide different control strategies
using remote volt-free contacts (see Fig 14). This could be to
provide remote On/Off from a timer or BMS Digital/Output
contact, to work with a door switch or for simple weather
compensation control to disable heating when outdoor air
temperatures become warmer. Table 4 describes the
different functions:
Function IN0 Notes
Remote
On/Off
(INHIBIT)
Unit operates
normally in
MANUAL Mode or
AUTO Mode
from the Remote
Control
Unit switches off
after 15s, with fan
run-on at Medium
fan speed if
DIP 2 = OFF
Use the Remote Control to set up unit and
then hide it away if required. *
On/Off is then done via IN0 using a remote
volt-free contact.
Function IN1 DIP 4 IN0 Notes
Door
Switch
Control
After 30s the
heating is disabled
and the fan goes to
low speed
Unit operates
normally in
MANUAL Mode or
AUTO Mode
from the Remote
Control
ON


Door Open:-
Normal Control
Door Closed:-
Heating Off
Low Fan Speed
Summer
Winter
Unit operates
normally in
MANUAL Mode or
AUTO Mode
from the Remote
Control
COLD DAY
Heating is disabled
straight away,
Fan speeds
operate normally
from the Remote
Control
WARM DAY
OFF
Simple weather
compensation control
using an outdoor air
thermostat with volt free
contacts
(see Section 11.3)
11. EXTERNAL CONTROLS
Fig 14
Table 4
WARNING: Do not apply any voltage to terminals IN0 and IN1 as this will damage the Ecopower
PCB inside the air curtain.
NOTE: Wire volt-free, remote switch contacts to 2-way screw terminals IN0 and IN1 using 2-core
cable.
* NOTE: The Ecopower Remote Control must stay plugged-in for the air curtain to keep working.
An optional plug-in EEPROM is available from Thermoscreens so the Remote Control can be un-
plugged and the air curtain stay working. Visit the Thermoscreens website for details.

T9901012-1-1 UK (v9) Page | 12
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).
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.
12. MULTIPLE AIR CURTAIN SYSTEMS
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 a
g
ainst the outside air tem
p
erature. Visit the Thermoscreens website for details.
C
NC
A
LARM!
NO
HEALTHY
Fig 15
Fig 16
Switch Contact Closed = Heating Enabled (cold day)
Switch Contact Open = Heating Disabled (warm day)
Outdoor Air
Thermosta
t
maximum 8 units
Fig 17

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13.1 Optional features
DIP switches on the air curtain Ecopower PCB (see Fig 18) provide
the following optional features, as explained below:
Fan heat interlock
Disable fan run-on
Thermostat master (for master/slave installations)
Weather compensation heat control (Summer/Winter)
Door switch control
Feature
DIP setting Default Notes
Fan heat interlock
Allows fan speed to govern heat
output on electric heated units.
If low or medium fan speed is
selected, a lower heat output
results. High heat operates only
on high fan speed.
DIP 1
ON
Heat output is
governed by fan
speed.
This feature is only used with
electric heated air curtains to
limit very high air
temperatures.
Set DIP1 to OFF if unit is
water heated or ambient.
Disable fan run-on
The 2 minute fan run-on after
switch off is enabled or disabled
on electric heated air curtains.
DIP 2
OFF
Fan run-on at
medium speed
enabled.
Must only be used for water
heated or ambient air
curtains. Each air curtain
must have DIP2 set to ON for
no fan run-on.
Thermostat master
For master/slave installations.
Only the air sensor in the
thermostat master air curtain is
used to measure air temperature.
Set DIP 3 to ON in the air curtain
that will be the master unit.
DIP 3
OFF
Air curtains in
master/slave
systems all act
independently.
Air sensor thermistors in all
slave air curtains will be
ignored.
Stops some units blowing
cold air and others blowing
warm air in master/slave
systems on larger doorways.
Weather compensation control
or Door switch control
Simple weather compensation
control to save heating energy.
or
Door switch control.
DIP 4
OFF
IN1 Weather
compensation.
ON
IN1 Door switch.
See section 11.1 Remote
Switch Contacts IN0 and IN1
for details
Weather compensation
control is the same as
Summer/Winter control
13. SYSTEM CONFIGURATION
Fig 18
WARNING: Isolate and disconnect air curtain from the power source before making any changes.
ON
1234
ON
1234
ON
1234
NOTE: A range of advanced factory fitted and plug-in control options are available from Thermoscreens to
enhance the performance of the Ecopower PCB controller inside the air curtain. These include
advanced weather compensation control using a heating curve, outlet air temperature control,
ECObus®Modbus BMS control, modulating heater outputs and EEPROMs for non-standard control
strategies. Visit the Thermoscreens website for details.
NOTE: Black rectangle is moveable head of DIP switch.
ON
1234

T9901012-1-1 UK (v9) Page | 14
If required, select fan speed at commissioning to suit outdoor environmental conditions and indoor
noise levels.
Factory settings for the 3 fan speeds are as follows:
HIGH fan speed (black wire) is wired into motor tapping
1 (highest motor speed tapping)
MEDIUM fan speed (blue wire) is wired into motor
tapping 3
LOW fan speed (red wire) is wired into motor tapping 4
Set fan speeds according to Table 5 below:
(refer also to wiring diagrams in Appendix 2)
Fan Speed
(air curtain as
delivered)
Motor Speed
Tapping
Maximum air curtain
mounting height
(m)
Sound Pressure
Level of air
curtain
[dB(A) at 3m]
Air Volume
Flow Rate
(m3/h)
[for E & A]
HIGH
(black wire) 1 (highest speed) 3.0 T1000R - 57
T1500R - 58
T2000R - 59
2000
3000
4000
2 2.8 T1000R - 56
T1500R - 56
T2000R - 57
1890
2685
3815
MEDIUM
(blue wire) 3 2.5 T1000R - 54 T1500R - 54
T2000R - 55
1730
2500
3570
LOW
(red wire) 4 2.2 T1000R - 52 T1500R - 52
T2000R - 53
1445
1990
3075
5 – (lowest speed) 2.0 T1000R - 50
T1500R - 51
T2000R - 52
1255
1600
2765
Sound pressure levels dB(A) at 3m distance are for a single air curtain mounted at its maximum mounting height, operating in a
room with average acoustic characteristics as defined in CIBSE Guide B5 (reverberation time 0.7s at 1kHz) and a room size
equivalent to 8 air changes per hour (ac/h). Care needs to be taken when selecting air curtains for an installation as noise levels
can be several dB higher if the mounting height is reduced, if the room is more ‘live’ (i.e. hard surfaces, no furnishings or
absorbent materials), if the room is smaller than 8 ac/h equivalent or a combination of these factors. Noise levels will also increase
if more than one air curtain is installed at the same doorway (e.g. +3dB(A) for 2 equal point sources: direct field).
14. FAN SPEED SELECTION
motor tapping: 5 4321
Table 5

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15.1 Remote Control Switch (for Ambient units)
1 On/Off
Turns the air curtain fans On or Off.
2, 3 & 4 Fan speed
Switch fan speed between Low, Medium and High respectively.
15. REMOTE CONTROL OPERATION
1
2
4
3

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15.2 Ecopower Remote Control (for Electric and Water Heated units)
Use the remote control to operate the air curtain as follows:
1 On/Off
Turns the air curtain On or Off.
2 Manual/Automatic
Switches between Manual and Automatic modes.
The Auto On indicator LED is lit for "Auto Mode" and unlit for "Manual Mode".
3 & 4 Heating level controls
Manual mode
Select heating level from zero, to half heat, to full heat by stepping up or down with the heating level
controls. The heating level scale shows the level selected.
Automatic mode
Heat output is controlled automatically according to:
Inlet air temperature, or
Room air temperature
This is dependent on the settings made in section 10: Remote Control Settings (DIP switch 4).
5, 6 & 7 Fan speed
Switch fan speed between Low, Medium and High respectively. The appropriate LED illuminates.
2
1
3
4
5
6
7Heating level
scale
NOTE: If an electric heated air curtain is heating when switched off the fan will run-on for
approximately 2 minutes to dissipate excess heat.

T9901012-1-1 UK (v9) Page | 17
16.1 Verify system operation
To commission the system, verify the following conditions are met:
All fans are working.
Fans operate at Low, Medium and High speeds.
There is no excessive mechanical noise coming from the fans.
When heating is selected, the air stream from the discharge grille warms up across the whole
length of the air curtain.
When set to manual with fans set to high speed, heating increases as higher heat is selected.
Warm air reaches across the doorway with door open or closed.
Ecopower Remote Control operates correctly in both manual and auto modes.
16.2 Instruct operator and hand over
Before leaving site, hand over the installation to the end user or their representative.
Explain that any person operating the air curtain must be given supervision and instruction by the
person responsible for their safety, concerning the safe use of the unit and to understand any hazards
involved. Children and those with reduced physical, sensory or mental capabilities should not operate
the air curtain.
Recommend that the doorway should be closed whenever possible but that during times of high
pedestrian use it will become an ‘open doorway’. The air curtain then serves an essential purpose by
saving energy and providing comfort to occupants.
Explain that the inlet grilles and air filters (if fitted) must be cleaned regularly and the unit serviced at
schedule intervals – see section 19: Service & Maintenance.
Complete the following once commissioning is completed.
Installer signature
Customer signature
Installer name
Customer name
Installer company
Customer company
Date
Date
16. COMMISSIONING THE SYSTEM
17. SIGN OFF
NOTE: Leave these instructions with the customer/end user or their representative!!

T9901012-1-1 UK (v9) Page | 18
18.1 Overheat safety cut-out
An overheat fault in electric heated units may cause the overheat safety cut-out(s) to operate.
This is indicated by flashing LEDs on the remote control and a red status LED on the Ecopower PCB
inside the air curtain.
Before resetting ensure there is adequate air flow from the air curtain and the unit has been
commissioned as per Section 16.
To reset a overheat safety cut-out trip:
Step 1 Switch off the electrical supply to the air curtain.
Step 2 Allow time for the air curtain to cool down; typically 10 minutes.
Step 3 Switch on the electrical supply to the air curtain.
Step 4 Press the Auto button on the Ecopower remote control 4 times.
Air curtain heaters will then operate and after 30 seconds the LEDs on the remote control will stop
flashing and the status LED on the Ecopower PCB in the air curtain will flash green.
18.2 Fuses
In the event of an electrical fault internal electrical fuses may operate.
There are two internal fuses located on the Ecopower PCB inside the air curtain:
Fuse 6.3A (T) supplies the fan motors within the air curtain
Fuse 100mA (F) controls the operation of the motherboard
18.3 Ecopower PCB status indication
There is a status LED on the Ecopower PCB inside the air curtain (See LED shown on Wiring
Diagrams in the Appendix).
This indicates the status of the Ecopower Control system as follows:
1. LED flashing green – operation normal
2. LED flashing red – low supply voltage, remote control not plugged in or RJ cable fault
3. LED permanently red – overheat safety cut-out(s) open circuit from an overheat situation
(see Section 18, Fault Conditions for how to reset)
18. FAULT CONDITIONS

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WARNING: Failure to adequately maintain the unit and provide a suitable cleaning schedule will
result in a loss of performance and reduced life expectancy of the air-curtain and
possible overheating and fire risk with electric heated units.
19.1 Every week
Turn off the air curtain to prevent dust entry, then clean the face of the recessed grille using a vacuum
cleaner with an extension tube and brush.
19.2 Every 3 months
Clean and inspect the inside of the air curtain as follows:
Step 1 Open the hinged inlet grille using a flat bladed screwdriver to release the quarter turn
fasteners (see Fig 6, Section 7.3).
Step 2 Clean and remove any build-up of dust and dirt within the air-curtain (inlet/outlet grilles,
fan impellers, housings and motors) using a vacuum cleaner and soft brush.
Step 3 Check within the unit to ensure all electrical connections and crimped terminals are tight
and that all cables are in good condition.
Step 4 On electric heated air curtains, remove the fan deck(s) as follows to inspect electric
heaters, electrical wiring and connections and to remove dust, dirt and debris:
Unclip the fan motor electrical connector.
Unfasten 4 x M6 nuts/bolts on each fan deck.
Unfasten M4 screws at bottom edge of fan deck.
Carefully lift the fan deck away from the air curtain.
Close and secure hinged inlet grille after servicing. Reconnect electrical supply and test to ensure
correct operation (see Section 16: Commissioning).
19. SERVICE & MAINTENANCE
NOTE: Weekly maintenance can be carried out by the Cleaner or Janitor from floor level.
WARNING: Before servicing, isolate and disconnect the air curtain from the electrical power.
NOTE: Build-up of dirt on fan impellers can cause vibration, noise and excessive wear on the
motor bearings.
WARNING: The following servicing and maintenance must be carried out by a competent
electrician or a Thermoscreens appointed technician.

T9901012-1-1 UK (v9) Page | 20
All units are covered by a two year warranty.
Failure to adequately maintain the unit may void the warranty. If any problems are encountered,
please contact your installer/supplier.
If any problems are encountered, please contact your installer/supplier.
Failing this please contact the Thermoscreens warranty department.
Care has been taken in compiling these instructions to ensure they are correct. Thermoscreens Ltd.
disclaims all liability for damage resulting from any inaccuracies and/or deficiencies in this
documentation. Thermoscreens Ltd. retain the right to change the specifications stated in these
instructions.
Thermoscreens Ltd Email: [e-mail]
St. Mary’s Road Nuneaton Tel: + 44 (0) 24 7638 4646
Warwickshire England Fax: + 44 (0) 24 7638 8578
CV11 5AU www.thermoscreens.com
20. WARRANTY