Thermoscreens T1000R, T2000R, T1500R Installation Instructions

T-RECESSED RANGE AIR CURTAINS

INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS

PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE ATTEMPTING INSTALLATION

Thermoscreens Ltd

St. Mary’s Road Nuneaton

Warwickshire England

CV11 5AU

Email: [e-mail]

Tel: [phone]
Fax: [phone]

www.thermoscreens.com

4003155-9 UK Page 1 of 19

UN-PACKING YOUR T-RECESSED AIR CURTAIN

The following items are supplied and packaged within the boxes.

T-Recessed Air Curtain

Motorised Valve

(Ecopower LPHW units only)

Note Optional filters are available for Water and Ambient models.

If anything is missing or damaged please contact your place of purchase immediately.

For your records

Date of Purchase……………………………..
Place of Purchase…………………………….
Serial Number…………………………………

For warranty purposes proof of purchase is necessary so please
keep a copy of your invoice.

(All documentation supplied with each unit should be stored and kept for future reference).

Remote Control

Ecopower
Electric & LPHW

Manual Ambient

Recessed Grille

(Packed separately)

4003155-9 UK Page 2 of 19

INSTALLATION OF YOUR T-RECESSED AIR CURTAIN

The T-Recessed air curtain has been designed for recessing within ceiling voids
or bulkheads.

Location

Ensure that the unit is mounted within its height
specification of 1.8m to 3.0m maximum (from floor
level to the underside of the unit/grille) and that it
is situated as close to the door as possible.
Note: The air discharge should be nearest to the
door as shown in adjacent figure. Ensure the air
curtain is as close to the door opening as possible
for best performance, obstructions such as door
opening devices, structural beams etc will reduce
the performance.

Note the T-Recessed air curtain has a series of square punched air ventilation holes along
one side panel of the unit which will be within the ceiling void once the unit is installed. There
must be an air gap of 50mm minimum between these ventilation h oles and any
obstruction/bulkhead within the ceiling void to allow ventilation air to easily enter the air
curtain via these holes. Furthermore, the ceiling void must be sufficiently large and freely
ventilated so there will be adequate supply of ventilation air (m
the ceiling void is enclosed around the air curtain it will need an air ventilation grille of
effective free area (cm
enter the square punched air ventilation holes.

Table 1

Air curtain

2

) as given in Table 1 and an adequate air path within the void for air to

Required air flow within

ceiling void (m3/hr)

Effective free area of ventilation grille

for an enclosed ceiling void (cm2)

3

/hr) to the unit, see Table 1. If

T1000R 353 500
T1500R 421 700
T2000R 707 1200

Ceiling Suspension

For a standard width recess grille (436mm), make the cut-out in the ceiling to the dimensions
given in Figure 1. The air curtain needs to be tipped on its side and angled upwards to fit
through the ceiling cut-out, ensure there is sufficient height clearance in the ceiling void to do
this. For an air curtain with a wider recess grille (476mm), make the cut-out in ceiling to the
dimensions given in Figure 2. The air curtain will fit through the ceiling cut-out. Alternatively,
the ceiling can be fitted after the air curtain has been installed.

Clearance holes for M10 threaded rod to enter from
above are provided on the top face of the casing (4 x
1m and 6 x 1.5/2m models, for dimensions see Figure
1 or Figure 2) allowing the unit to be suspended. All

six suspension points must be used for 1.5m and 2m

models.
Insert rod through each hole in top and attach onto
each fixing bracket at lower edge of air curtain (see
insert). Lock rod in place using M10 nut above and
below fixing bracket (threaded rod and locking nuts
are not provided). Ensure rod does not come below
bottom face of unit.

Ensure each of the threaded rods is secured on to a suitable structure that can support the
weight of the unit (for unit weights see Table 2)*.

4003155-9 UK Page 3 of 19

fixing
bracket

Electrical supply inlets suitable

for 25mm gland (1m & 1.5m)

LPHW connections

A

Rp 3/4 (3/4in.BSP female)

B B

Figure 1 - Standard Recess Grille

296

CEILING LEVEL

436

Electrical supply inlets suitable for 25mm

gland - 2m electric heating unit only.

140

55 314

Holes for M10

drop rods

2145

390

2190

1095

2240

T2000R

20-90mm

800

1650

T1500R

436 C

1150

1604

N/A

1104

1555

1055

390

390

T1000R

A(mm)

C(mm)

B(mm)

Width(mm)

Length(mm)

Cut-Out

in Ceiling

4003155-9 UK Page 4 of 19

Electrical supply inlets suitable

for 25mm gland (1m & 1.5m)

LPHW connections

A

B B

Rp 3/4 (3/4in.BSP female)

Figure 2 - Wider Recess Grille

436

Electrical supply inlets suitable for 25mm

gland - 2m electric heating unit only.

Holes for M10

drop rods

2290

1095

296

CEILING LEVEL

35-100mm

476 C

T2000R

T1500R

T1000R

2240

1650

1150

A(mm)

800

1690

N/A

1190

C(mm)

B(mm)

2240

1650

1150

Length(mm)

140

55 314

436

436

436

Width(mm)

Cut-Out

in Ceiling

4003155-9 UK Page 5 of 19

Note: When installing the air curtain ensure that the underside of the unit is 50mm above the
bottom face of the ceiling tile/plasterboard. The recessed grille has an adjustment range
from the underside of the air curtain to the exposed bottom face of the ceiling
tile/plasterboard (see Figure 1 or Figure 2).

*It is the sole responsibility of the installer to ensure that the building fixing points and
suspension system used are suitable for the air curtain being installed

Safety and Electrical Connections

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 single phase or 3 phase local isolator with a contact separation of at least 3mm in all

poles must be fitted to the supply wiring (the isolator must be fitted in an accessible
position).

The air curtain must be earthed.

The appliance must be connected by means of wires having an appropriate

temperature rating (heat resistant).

Ensure that the supply cables, circuit breakers and other electrical installation equipment

are correctly sized for the air curtain being installed; see Table 2.

On a 3 phase electrical supply the unit requires a neutral connection (3N~).

Cable glands used for the Electrical Input must be rated IP21 or higher.

Table 2

Air Curtain Electrical

Supply

Rated Power

Input (kW)

Current per

phase (A)

Heat Output

(kW)

Weight

(kg)

(V/ph/Hz)

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 12.0 29
T1500WR 230/1/50 0.35 1.7 18.0 42
T2000WR 230/1/50 0.45 2.0 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 9.0/18.0 41
T1500E18R 400/3/50 18.35 27.9 6.0/12.0 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

4003155-9 UK Page 6 of 19

Fitting of the Recessed Grille

The grille consists of a frame, grille core (fitted within

the frame) and four brackets (note: the brackets are
fixed to the frame).

Removal of Grille Core

Prior to fitting the grille to the air curtain and the
ceiling the grille core will need to be removed from its
frame. Release the grille core by unfastening the two
conical headed bolts fitted at each end of the grille
core. Push against the spring loaded pins and the
grille core can now be pulled clear of its frame.

Note: the grille core will still be attached to the
frame via cord safety ties.

The rectangular hole in the ceiling must be sized
to suit the grille frame, see Figure 1 or Figure 2 for
dimensions.

Attaching the Grille to the Air Curtain

Before lifting the grille frame into position locate the four M6 bolts (two inside each end
of the air curtain). Remove the M6 bolts and lift the frame into position (ensure that
when fitted the air discharge vanes align with the air discharge of the air curtain, see
Figure 1 or Figure 2), screw each M6 bolt through the slot in the grille bracket until all
four are located into place. Adjust the height of the grille frame (via slots in brackets) so
the frame fits nicely against the under side of the ceiling. Once the desired height is
achieved tighten each M6 bolt in place locking the grille frame into the correct position.

Adjusting the Separator Plate

Within the air curtain there is a sliding separator plate,
this needs adjusting up or down to stop the air
discharge re-circulating within the air curtain. To adjust
the separator plate release the M6 bolts at either end,
extend the slide plate so that it will just touch the
topside of the grille along its whole length and tighten
the bolts. It will be necessary to fit the grille core to
gauge where the separator plate should be fitted.

Fitting the Grille Core

Once the above is complete the grille core can be refitted, to do so locate each spring
loaded pin in its locating hole, push against the spring loaded pins to allow the fixed pins
to locate within their fixing holes. Tighten and secure the conical bolts fitted at each end
of the grille core.

Once the ceiling is finished remove the protective plastic film from the recessed grille
frame.

4003155-9 UK Page 7 of 19

LPHW Models

For LPHW models ensure suitable water mains isolation valves are fitted in the flow and
return pipework. When fitting the 3-port valve ensure that the pipe connections are
fitted as detailed below and are in accordance with the manufacturers leaflet supplied
with the valve.

Air Curtain Water Flow Rate (l/s)

Coil Water Pressure Drop (kPa)

82/72 °C

T1000WR 0.29 2.66
T1500WR 0.29 2.02
T2000WR 0.57 3.54

Ambient Models

Ambient units are supplied with a remote switch unit.
The switch unit allows the air curtain to be powered
ON/OFF and select one of three fan speeds.

4003155-9 UK Page 8 of 19

Fitting/Connecting the Remote Control

The Ecopower Plus controller uses extra low voltage to communicate via the RJ control
cable supplied. The controller should be located in a suitable place for easy access, it

can be fixed to the wall via various fixing slots
provided in the back case or onto an electrical
switch box (not provided). To mount controller
onto an existing switch box, feed one end of the
control cable through the switch box (see insert).

Using a screwdriver undo screw mounted on
the top of the controller case. Pull the front case
slightly forwards and lift the back case away.

Feed and secure the RJ control cable through
one of the openings in the back case and
secure back case to switch box using 2 x M3.5
mounting screws (not provided).

With the cable RJ plug locking clip lying nearest
to controller PCB, connect the RJ plug to the RJ
socket on the board.

Note: For controller DIP switch options refer to

Ecopower Plus Remote Control Operation and
DIP Switch Settings.

Refit the controller front case to the back case.
The air curtain end of the control cable should be
connected to one RJ socket fitted either on the
top panel for NT or the Ecopower motherboard
inside a recessed air curtain. Ensure the control
cable is safely secured.

Multiple Installation (Ecopower only)

To Master/Slave two or more air curtains together the remote control is plugged into the
Master unit and a RJ lead should be connected from the Master to the Slave unit(s).
Thermoscreens 3m RJ extension leads are available and must be ordered separately.
Additional air curtains, up to a maximum of eight units, may be connected as indicated
below. For Master/Slave configuration an independent mains supply as per Table 2
must be supplied to each air curtain.

4003155-9 UK Page 9 of 19

Ecopower Controller Motherboard

Function

Fan Heat Interlock –

The heat output is governed by the
fan speed. If low or medium fan
speed is selected the heat output
will operate on only first heat stage.
Second stage heating will only

operate on high fan speed.

Disable Fan Run-on –

Disable fan run-on.

Thermostat Master –

Only the air sensor thermistor in
the master air curtain will be used
for measuring the reference air
temperature for the whole
master/slave installation.

Overheat Fan Disable –

If DIP4 is on and thermal cut-out(s)
operate both heat and fan circuits
are isolated and LED’s on wall
switch flash. If DIP4 is off and
thermal cut-out(s) operate, only the
heating circuit is isolated and the
LED’s on the wall switch flash.

Fan run-on time set two minutes.

- white rectangle indicates the moveable head of each 4 way DIP switch

Control

DIP1 Option

ON

OFF

1 2 3 4

DIP2 Option
(LPHW &
Ambient only)

ON

OFF

1 2 3 4

DIP3 Option

ON

OFF

1 2 3 4

DIP4 Option
(Electric only)

ON

OFF

1 2 3 4

Built-in

Comments

Suitable on vertical electrically
heated Designer air curtain.
Maximum heat output achieved if
maximum fan speed selected.
Independently set-up DIP switch
on each mother board. This
feature operates in manual or
auto mode.

Must only be used for LPHW and
Ambient air curtains.
Independently set-up DIP switch
on each mother board.

The air sensor thermistors in all
the slave air curtains will be
ignored. This will then avoid
situations on larger doorways with
master/slave air curtains where
some units can blow cold air
whilst others can blow warm air,
because they currently all refer to
their own air sensor for control of
the heat output of each air
curtain.
The master air curtain need not
be the one that the wall control is
plugged into. This dip switch
setting must also be used for
Global Switching (Master/Slave)
via the INHIBIT terminal – see
next page.

Independently set-up DIP switch
on each mother board.

To remove fault, isolate electrical
supply to air curtain, reset TOC
and reconnect supply.

If “FAN ONLY” has been
selected, at switch off, no fan run­on.

Standard

As supplied, for
LPHW and Ambient
the default setting
would be for heat
and fan settings to
be independent
(DIP1 OFF).

As supplied, the
default setting would
enable fan run-on
(DIP2 OFF).

As supplied, the
default setting would
be for the air sensor
thermistor on all
units to be
measuring
(DIP3 OFF).

As supplied, the
default setting would
enable fan if TOC
trips (DIP4 OFF).

4003155-9 UK Page 10 of 19

DIP switches fitted on the Ecopower board provide a selection of optional features as described
above. Isolate and switch electrical power off before configuring and/or changing any DIP switch
settings.

 Easy plug-in arrangement for remote air sensor thermistor on a 1m lead. Plugging-in the remote

air sensor to J3 disables the standard air sensor thermistor already fitted on the Ecopower board.

As supplied, the board will not have the remote air sensor fitted.

 An INHIBIT two screw terminal fitted on the Ecopower board for BMS remote On/Off feature.

If the terminal is linked, i.e. by 2 wires to a remote volt free contact, the unit will run. If it is open
circuit across the terminal the unit will switch off. This remote On/Off feature has global switching
logic, i.e. if you master/slave several units together you need connect the remote contact to only
one of them to turn all units on and off in the master/slave system. As supplied, a wire link will be
fitted to the terminal block on every unit. For summer settings place a 3.3kΩ resistance across the

INHIBIT terminal, with these settings fans only will run even if controller is requesting for heat.

Customer Building Management System

ECOPOWER BOARD

 A HEALTHY two screw terminal is included on the board for a fault signal indication if the electric

elements overheat cut-out has operated. A healthy system provides a 24V DC signal at the
terminals compared to an overheat fault which provides OV DC.

4003155-9 UK Page 11 of 19

ON

1234

T1000E9R, T1000E12R, T1500E12R AND T1500E18R

4003155-9 UK Page 12 of 19

ON

123

4

T2000E18R

ON

1234

T2000E24R

4003155-9 UK Page 13 of 19

ON

4

123

T1000WR, T1500WR AND T2000WR

4003155-9 UK Page 14 of 19

230V/1ph/50Hz

E

L

N

F1

(5A)

Red

Blue

Red

1

Red

Fan motor 1

Fan motor 2

(2m Only)

Orange

2

Violet

3

Brown

4

I

0

T1000AR, T1500AR AND T2000AR

4003155-9 UK Page 15 of 19

Ecopower Plus Remote Control Operation and DIP Switch Settings

7

Heating Level
Scale

6
4

3

5

1

2

On/Off (I/O)

Press On/Off switch (1) to turn the air curtain
On and operate as follows:-

Press Auto switch (2) to cycle between Manual
and Automatic modes. The Auto on indicator
LED is lit for "Auto Mode" and un-lit for "Manual
Mode".

Manual:

Heat output can be selected as Zero, Half Heat
or Full Heat. Heating levels are selected by
stepping up or down with switches (3) and (4).
Heating level indicator LED's go 0%, 50% or
100% to show the level selected.

Automatic:

If DIP switches 1, 2 and 4 on the Ecopower
motherboard are set to OFF, the air curtain
measures the incoming air temperature and
automatically selects the necessary amount of
heat to keep it at the level selected.

Fan Speed

Switches (5), (6) and (7) select fan speed low,
medium or high respectively. The appropriate
LED above each fan speed indicator is
illuminated to show which fan speed is selected.

Pressing the On/Off switch (1) again switches the
air curtain off with all the LED’s switched off. If a
heated air curtain is heating when switched off
the fan will run-on at low fan speed for an
extended time (approx. 2 minutes) to dissipate
excess heat.

Do not switch the air curtain On/Off from the isolator. If the mains supply is

isolated or cuts-out during operation the safety thermal cut-out(s) for electric

heated air curtains within the air curtain may operate. If this happens the

thermal cut-out(s) will need to be reset by a competent technician.

DIP Switch Settings

At the back of the Ecopower Plus remote
control PCB there are four DIP switches (see
above) that provide the following optional
features.

DIP1 Restart on Power-Up – If electrical

supply to the air curtain is
interrupted, upon restoring electrical
supply, the customer’s settings on
the remote control will be retained.
The default is with this feature ON.

DIP2 Stop Fan on Cold – Fans switch off

when heating level is achieved
(Automatic mode only). The default
setting is with this feature OFF.

DIP3 Never Blow Cold – Unit always

heats in Automatic mode (i.e. will
not go to ambient mode). The
default setting is with this feature
OFF.

DIP4 Air Sensor in Controller – The air

sensor in the remote controller is
enabled (DIP4 ON) and the air
sensor on the Ecopower
motherboard in the air curtain is
disabled. Temperature control for
Automatic Mode is then done at the
remote control, which may be an
advantage to limit overheating of the
door entrance area. The default

setting is with this feature OFF.

4003155-9 UK Page 16 of 19

Commissioning

Once the air curtain is functioning check that the fans operate at Low, Medium and High
speeds, that there is no excessive mechanical noise coming from the fans and that all fans are
working. If the unit is electric heated or water heated check that the air stream from the
discharge grille warms up across the whole length of the air curtain when heating is selected.
Check that heating increases as higher heat is selected and feel to see that the warm air
stream is reaching across the doorway with door open or closed. If an Ecopower controller is
being used check its operation in Manual Mode. Then select Auto Mode and increase the
heating set point until the air stream warms up. Reduce the heating set point until the air
stream goes cold.

Persons using the air curtain must be given adequate instruction and supervision concerning
the use of the appliance by a person responsible for their safety. The air curtain is not intended
for use by persons (including children) with reduced physical, sensory or mental capabilities.

Explain to the end user that the doorway should be closed whenever possible but that during
times of high pedestrian use it will become effectively ‘open doorway’. The air curtain serves
an essential purpose by saving energy and providing comfort to the occupants when
compared to an open doorway with no air curtain fitted.

Before leaving site it is important that the air curtain installation is “Handed-Over” to the end
user or his representative and the operation of it is fully explained and that they understand
how it operates. Explain also the service intervals and that the unit must be regularly cleaned
and if it has filters fitted that these require regular cleaning/replacement.

Fault Conditions

In the event of a fault the thermal cut out(s) on electric heated units (Note: If the mains supply
is isolated during operation then the thermal cut outs may operate) or internal fuses may

operate. The thermal cut out(s) are located upon the fan deck assembly inside the air curtain
(one on the 1 & 1.5m and two on the 2m model). For Ecopower units two internal electrical
fuses are located on the Ecopower board; 6.3A (T) supplies the fan motors within the air
curtain and 125mA (F) controls the operation of the Ecopower board. For Ambient and
Standard LPHW units the fuse is located within the control panel at the left hand end of the air
curtain.

If for an electric heated air curtain an overheat fault occurs, or if J2 link is missing for LPHW
models, the LED’s on the remote control will flash and the Ecopower board status LED on the
board will be permanently red to indicate a fault.

In the case of a fault condition (refer to flowchart) do not attempt to reset the thermal cut outs
or replace the fuses, arrange for a Thermoscreens appointed technician or certified electrician
to attend the unit to investigate the reason why the thermal cut outs/fuse(s) have operated.
Once the cause has been determined and rectified, they will reset/replace the thermal cut
out/fuse and function test the unit.

PCB Status

Fitted on the PCB board inside of the air curtain is an LED shown as LED1 on wiring
diagrams that will indicate the Ecopower control status.

1. LED flashing green – operation normal.

2. LED flashing red – low supply voltage or controller not plugged into Ecopower
motherboard.

3. LED permanently red – thermal cut outs open circuit (electrically heated models) or
J2 link missing (LPHW models). Remote Control LED’s will also flash to indicate the
thermal cut-out(s) has operated or J2 link is missing.

Note to reset the thermal cut outs please refer to fault condition section detailed above.

4003155-9 UK Page 17 of 19

User Fault Finding Flowchart (for Ecopower Control)

Service Agent to

reset thermal cut-

out(s)

Service Agent to

thermal cut-out(s)

investigate why

have operated

Is Electrical

Power

switched on

Yes

Are the fans

operating

correctly

Yes

Select heat output

No

No

Do the LED’s

light up on
the remote

control

Yes

Switch on Electrical

Power

Connect remote control
and push On/Off switch

to turn unit on

No

No

Is the remote

control
plugged in
and turned

on

Yes

Yes

Check if thermal

cut-out(s) have

tripped (Electric

Heated only)

No

Contact Installer

No

Contact Installer

Is the unit

discharging

warm air

Yes

Unit is working

satisfactorily

4003155-9 UK Page 18 of 19

Service & Maintenance

Always disconnect and isolate the mains electricity supply before installing,
maintaining or repairing this equipment. Note: All maintenance/repairs should
only be carried out by a competent electrician or Thermoscreens appointed
technician.

To ensure the air curtain operates at full efficiency the inlet/outlet grilles, fan impellers,
housings and motors must be kept free of dust and debris. Build up of dust on the fan
impellers can cause vibration, noise and excessive wear on the motor bearings.

Frequency of cleaning will depend on the environment, but we would recommend that
the unit be cleaned a minimum of every 3 months (failure to adequately maintain the
unit and provide a suitable cleaning schedule will result in performance degradation
and reduce the life expectancy of the air-curtain).

Remove the grille core from the air curtain. Vacuum and clean the build-up of dirt and

debris within the air-curtain (please note that the motor(s) are permanently lubricated

and require no additional lubrication). If filters are fitted, ensure these are regularly
inspected and cleaned or replaced. All dirty or blocked filters should be immediately
replaced.

Once the air curtain has been cleaned check all electrical connections within the unit
ensuring terminals are tight and that crimped connections have not become loose.
Refit the grille core in the recessed grille. Reconnect the electrical supply and fully
function test the air-curtain to ensure correct operation (See Commissioning).

Warranty

If any problems are encountered, please contact your installer/supplier. Failing this
please contact the Thermoscreens warranty department. All units are covered by a
two year warranty period.

Care has been taken in compiling these instructions to ensure they are correct, although
Thermoscreens disclaims all liability for damage resulting from any inaccuracies and/or
deficiencies in this documentation. Thermoscreens retain the right to change the
specifications stated in these instructions.

Thermoscreens Ltd
St. Mary’s Road Nuneaton
Warwickshire England
CV11 5AU

Email: [e-mail]
Tel: + 44 (0) 24 7638 4646
Fax: + 44 (0) 24 7638 8578

www.thermoscreens.com

4003155-9 UK Page 19 of 19