15.REMOTE CONTROL OPERATION ................................................................................................ 15
16.COMMISSIONING THE SYSTEM .................................................................................................. 16
17.SIGN OFF ....................................................................................................................................... 16
All electrical wiring and connections MUST be carried out by a competent qualified electrici an in
accordance with the latest edition of national and local wiring regulations and/or local statutory
regulations. “Danger: Disconnect electrical supply before servicing”
A 1 phase or 3 phase local Disconnect, provided by others in accordance with Electrical Code
and Local Electrical Codes, with a contact separation of at least 3mm (1/8in) on all poles,
must be fitted in the electrical supply to the air curtain and located in an accessible position
adjacent to the unit. Units with dual electrical supplies (see * in Table below) must have a
common disconnect to switch off both supplies simultaneously.
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 a 480V or 600V, 3 phase electrical supply - see Section 3:
Specifications, Electrical Supply * – also need a separate 208V to 240V electrical supply to
operate fan motors and controls.
A 25mm / 1in size cable gland or conduit connector of IP21 rating should be used for the
Electrical Supply into the air curtain.
See Wiring Diagrams for connecting electrical supply and control cables to the air curtain. The
** NOTE. Electric heater circuit current = 47.9 Amps
Rated
Current per
phase (A)
49.0 **
10.9
0.5
14.5
0.7
21.7
1.0
9.3
0.5
12.8
0.7
18.6
1.0
Heat Output
[Low/High]
(kW)
8.64 / 17.28 37 / 82
4.5 / 9.0 20 / 44
6.0 / 12.0 27 / 60
9.0 / 18.0
4.5 / 9.0
6.0 / 12.0
9.0 / 18.0 37 / 82
Weight
(kg / lbs)
37 / 82
20 / 44
27 / 60
Table 1
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Page 4
4. INTRODUCTION
Established in the 1960s, Thermoscreens is a leading air curtain manufacturer that exports to over 60
countries worldwide.
As with all our products, the C Recessed range of air curtains is designed with energy efficiency in
mind.
C models suffixed ER, WR or AR are designed to be surface mounted inside a building and located
horizontally over a doorway.
They must not be installed on the outside of a building or built into a cabinet or recessed in any way.
“Caution: This equipment has been investigated with regard to safety from electrical fire and shock
hazard only. The mechanical features have not been investigated and are subject to approval by the
inspection authority having jurisdiction.”
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.
The air curtain is designed to be recessed within ceiling voids or bulkheads with in 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:
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.
NOTE: For the air curtain to work well the doorway should be less than the width of the airstream.
7.2 Ceiling Suspension
Step 1 Cut an aperture in the ceiling to the dimensions in
Appendix 1. Cut notches, if necessary, to clear
screws in the air curtain casing.
NOTE: For LPHW models, pipework will need to be installed
NOTE: Do not let these four hanging rods come below the
above the curtain. Allow sufficient access and height
clearance within the ceiling void to do this.
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 M8 or 5/16 UNC
lock-nuts either side of the fixing brackets to secure
the hanging rods.
bottom of the unit casing or they may prevent the
recessed grille fitting properly.
Fig 1
Fig 2
Fig 3
2
1
T9901013-1-1 CAN-USA-ENG (v9) Page | 6
Page 7
5
M8
or
UNC hanging rods
16
RECESSED AIR CURTAIN
CEILING LEVELCEILING LEVEL
25 - 50 mm
1 - 2 inch
Bottom surface of recessed
air curtain casing
25 - 50 mm
1 - 2 inch
Fig 4
Step 3 Secure each rod to a suitable structure that can support the weight of the unit (see Section 3:
Specifications for weights).
Step 4 Adjust the height of the unit on its hanging rods so the bottom surface of the casing goes
between 25-50mm or 1 to 2 inches up into the ceiling as shown in Fig 4. Ensure the unit is level.
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.
7.3 Attaching the recessed grille to the air curtain
There are 4 fixing slotted brackets on the C1000R, C1500R and
6 brackets on the C2000R (see Fig 5).
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 C1000R unit and
three fasteners on C1500R and C2000R units. Before
lifting the grille frame into position, remove four (six on
C2000R) M6 bolts fitted on the inside edge of air
curtain.
Fig 5
Fig 6
Centre
brackets for
C2000R
T9901013-1-1 CAN-USA-ENG (v9) Page | 7
Page 8
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.
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 7
Fig 8
Fig 9
Fig 10
NOTE: Open the hinged grille core to gain access to electrical connections, and for servicing an d
maintenance.
T9901013-1-1 CAN-USA-ENG (v9) Page | 8
Page 9
8. LPHW MODELS
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 / US Gall/min at 180/160°F)
C1000W, 1-row
(6kW)
C1500W, 1-row
(9kW)
C2000W, 1-row
(12kW)
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.
7.8 / 2.1 5.1 / 0.74 / 1.7
11.7 / 3.1 10.9 / 1.58 / 3.6
15.6 / 4.1 19.7 / 2.86 / 6.6
The installer must connect the 3-port valve in the heating pipework as shown in Figure 11 below:
Water Pressure Drop
(kPa / psi / ft H2O)
Table 2
22mm pipe
22mm pipe
A
B
wire valve to pcb inside air curtain
A/B
22mm pipe
22mm pipe
R
E
T
U
R
N
Fig 11
F
L
O
W
T9901013-1-1 CAN-USA-ENG (v9) Page | 9
Page 10
9. REMOTE CONTROL INSTALLATION
Mount the Ecopower remote control in a convenient position directly to the wall or onto a switch box.
9.1 Wall mounting
Step 1 Using a screwdriver undo the scre w on the top of the remote control
case and pull the back case away (see Fig 7).
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 7).
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 ba ck
case to switch box using 2 mounting screws (not supplied) (see Fig 8).
Step 3 Connect the RJ plug to the RJ socket on the PCB in the remote
control.
Step 4 Refit the front case.
NOTE: For optional remote control settings see Section 10.
Fig 7
23/8in
Fig 8
10. REMOTE CONTROL SETTINGS
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
2 Stop fan on cold Fans are switched off when
heating level is achieved (AUTO
mode only)
3 Never blow cold Air curtain always heats in
AUTO mode
4 Room air
temperature control
T9901013-1-1 CAN-USA-ENG (v9) Page | 10
Enables the room air sensor in
the Remote Control
ON WARNING! – Fans start
on their own after power
is restored
OFF
OFF Will not go to ambient
mode
OFF Disables all other
temperature sensors
Table 3
Page 11
11. EXTERNAL CONTROLS
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 9). 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:
Fig 9
Table 4
Function
Remote
On/Off
(INHIBIT)
Function
Door
Switch
Control
Summer
Winter
NOTE: Wire volt-free, remote switch contacts to 2-way screw terminals IN0 and IN1 using 2-core
WARNING: Do not apply any voltage to terminals IN0 and IN1 as this will damage the Ecopower
* NOTE: The Ecopower Remote Control must stay plugged-in for the air curtain to keep working.
Unit operates
normally in
MANUAL Mode or
AUTO Mode
from the Remote
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
COLD DAY
cable.
PCB inside the air curtain.
An optional plug-in EEPROM is available from Thermoscreens so the Remote Control can be unplugged and the air curtain stay working. Visit the Thermoscreens website for details.
IN0
Unit switches off
after 15s, with fan
run-on at Medium
fan speed if
DIP 2 = OFF
IN1
Unit operates
normally in
MANUAL Mode or
AUTO Mode
from the Remote
Control
Heating is disabled
straight away,
Fan speeds
operate normally
from the Remote
Control
WARM DAY
Notes
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.
DIP 4 IN0 Notes
ON
OFF
Door Open: Normal Control
Door Closed: Heating Off
Low Fan Speed
Simple weather
compensation control
using an outdoor air
thermostat with volt free
contacts
(see Section 11.3)
T9901013-1-1 CAN-USA-ENG (v9) Page | 11
Page 12
11.2 Overheat safety cut-out indication
A
g
t
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 10).
Refer to Section 18.1: Overheat safety cut
out, for how to reset a overheat safety cut-out
situation.
Fig 10
NO
HEALTHY
NC
LARM!
C
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 11)
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 a
ainst the outside air temperature. Visit the Thermoscreens website for details.
Fig 11
Outdoor Air
Thermosta
12. MULTIPLE AIR CURTAIN SYSTEMS
For master/slave control, plug and connect units together with Thermoscreen RJ extension cables (not
supplied) as per Figure 12 below. Each air curtain must have its own electrical supply.
T9901013-1-1 CAN-USA-ENG (v9) Page | 12
maximum 8 units
Fig 12
Page 13
13. SYSTEM CONFIGURATION
13.1 Optional features
WARNING: Isolate and disconnect air curtain from the power source before making any changes.
DIP switches on the air curtain Ecopower PCB (see Fig 13) 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
DIP 1
ON
1234
ON
Heat output is
governed by fan
speed.
results. High heat operates only
on high fan speed.
Disable fan run-on
The 2 minute fan run-on after
switch off is enabled or disabled
on electric heated air curtains.
Thermostat master
For master/slave installations.
Only the air sensor in the
thermostat master air curtain is
used to measure air temperature.
DIP 2
ON
1234
DIP 3
ON
1234
OFF
Fan run-on at
medium speed
enabled.
OFF
Air curtains in
master/slave
systems all act
independently.
Set DIP 3 to ON in the air curtain
that will be the master unit.
Weather compensation control
or Door switch control
Simple weather compensation
control to save heating energy.
or
Door switch control.
NOTE: Black rectangle is moveable head of DIP switch.
NOTE: A range ofadvanced 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 curv e, outlet air temperature control,
ECObus
strategies. Visit the Thermoscreens website for details.
®
Modbus BMS control, modulating heater outputs and EEPROMs for non-standard control
DIP 4
ON
1234
OFF
IN1 Weather
compensation
ON
IN1 Door switch
T9901013-1-1 CAN-USA-ENG (v9) Page | 13
Fig 13
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.
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.
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.
See section 11.1 Remote
Switch Contacts IN0 and IN1
for details
Weather compensation
control is the same as
Summer/Winter control
Page 14
14. FAN SPEED SELECTION
Factory settings for the 3 fan speeds are shown in Tables 5 or 6 below:
Fan running on 208V (refer to wiring diagrams in Appendix 2)
Sound pressure levels dB(A) at 3m/10ft 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 noi se
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 fact ors. 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).
T9901013-1-1 CAN-USA-ENG (v9) Page | 14
Page 15
15. REMOTE CONTROL OPERATION
Use the Remote Control to operate the air curtain as follows:
1
2
1 On/Off
Turns the air curtain On or Off.
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.
7
Heating level scale
6
4
3
5
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.
NOTE: On C A (Ambient – non heated) units the LED indicators on the Heating level scale and
AUTO button still illuminate but are ignored as nothing happens in the air curtain.
T9901013-1-1 CAN-USA-ENG (v9) Page | 15
Page 16
16. COMMISSIONING THE SYSTEM
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 customer and hand over
Before leaving site, hand over the installation to the customer/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 understa nd 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.
NOTE: Leave these instructions with the customer/end user or their representative!!
17. SIGN OFF
Complete the following once commissioning is completed:
Installer signature Customer signature
Installer name
Installer company Customer company
Date
T9901013-1-1 CAN-USA-ENG (v9) Page | 16
Customer name
Date
Page 17
18. FAULT CONDITIONS
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:
Step 1 Switch off the electrical supply to the air curtain.
Step 2 Allow time for the air cu rtain 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 6.3A(T) internal fuses located in two DIN-rail fused terminals inside the air curtain
There are also 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 circuitry of the Ecopower PCB
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.
Indicators on Ecopower Remote Control also flash!
(see Section 18: Fault Conditions for how to reset)
T9901013-1-1 CAN-USA-ENG (v9) Page | 17
Page 18
19. SERVICE & MAINTENANCE
WARNING: Failure to adequately maintain the unit and provide a suitable cleaning schedule will
19.1 Every week
NOTE: Weekly maintenance can be carried out by the Cleaner or Janitor from floor level.
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
WARNING: Before servicing, isolate and disconnect the air curtain from the electrical power.
WARNING: The following servicing and maintenance must be carried out by a competent
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
Step 2 Clean and remove any build-up of dust and dirt within the air-curtain (inlet/outlet grilles,
NOTE: Build-up of dirt on fan impellers can cause vibration, noise and excessive wear on the
Step 3 Check within the unit to ensure all electrical connections and crimped terminals are tight
Close and secure hinged inlet grille after servicing. Reconnect electrical supply and test to en sure
correct operation (see Section 16: Commissioning).
result in a loss of performance and reduced life expectancy of the air-curtain and
possible overheating and fire risk with electric heated units.
electrician or a Thermoscreens appointed technician.
fasteners (see Fig 6, Section 7.3).
electric heaters, fan impellers, housings and motors) using a vacuum cleaner and soft
brush.
motor bearings.
and that all cables are in good condition.
T9901013-1-1 CAN-USA-ENG (v9) Page | 18
Page 19
20. WARRANTY
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.
Failing this please contact Thermoscreens Canada.
Care has been taken in compiling these instructions to ensure they are correct. Therm oscreens
Canada disclaims all liability for damage resulting from any inaccuracies and/or deficiencies in this
documentation. Thermoscreens Canada retain the right to change the specifications stated in these
instructions.