FRENGER systems FRT Series Manual

AIR CURTAIN
FRT RANGE
INSTALLATION, OPERATION
AND MAINTENANCE
INSTRUCTIONS

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
Page 1 of 30
FR-T Recessed Air Curtain
Riverside Road, Pride Park, Derby, DE24 8HY
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.frenger.co.uk
Frenger Systems is an FTF Group Company
Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
1.0 –Electrical Safety
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.
2.0 –Specifications
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)
FR-T 1000AR
230/1/50
0.25
1.1
N/A
27
FR-T 1500AR
230/1/50
0.35
1.7
N/A
40
FR-T 2000AR
230/1/50
0.45
2.0
N/A
50
FR-T 1000WR
230/1/50
0.25
1.1
6.0 / 12.0
29
FR-T 1500WR
230/1/50
0.35
1.7
9.0 / 18.0
42
FR-T 2000WR
230/1/50
0.45
2.0
12.0 / 24.0
53
FR-T 1000E9R
400/3/50
9.25
14.1
6.0 / 9.0
28
FR-T 1000E12R
400/3/50
12.25
18.7
6.0 / 12.0
28
FR-T 1500E12R
400/3/50
12.35
18.9
6.0 / 12.0
41
FR-T 1500E18R
400/3/50
18.35
27.9
9.0 / 18.0
41
FR-T 2000E18R
400/3/50
18.45
28.1
12.0 / 18.0
52
FR-T 2000E24R
400/3/50
24.45
36.8
12.0 / 24.0
52

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
Page 2 of 30
FR-T Recessed Air Curtain
Riverside Road, Pride Park, Derby, DE24 8HY
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.frenger.co.uk
Frenger Systems is an FTF Group Company
Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
3.0 - Introduction
Frenger is a market leading brand, renowned worldwide for specialist heating and cooling solutions. As with all our
products, the FR-T range of Air Curtains are designed with energy-efficiency in mind.
FR-T models suffixed ER, WR or AR are designed to be recessed inside a building and located horizontally over a doorway.
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.
Frenger Systems Ltd.
Riverside Road
Pride Park
Derby
DE248HY
Email: [e-mail] | https://www.frenger.co.uk
Tel: [phone] | Fax: [phone]

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
Page 3 of 30
FR-T Recessed Air Curtain
Riverside Road, Pride Park, Derby, DE24 8HY
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.frenger.co.uk
Frenger Systems is an FTF Group Company
Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
4.0 –Delivery Contents
The following items are supplied in the box at delivery.
Recessed Grille 3-port control valve Outdoor Air Thermostat (for water heated units) (Optional –supplied by installer)
NOTE: If any parts are missing or damaged contact your place of purchase.
FR-T Recessed Air Curtain
Ecopower Remote Control
(for Electric and Water Heated units)
Remote Control Switch
(for Ambient units)
Recessed Grille
3-port control valve
(for water heated units)
Outdoor Air Thermostat
(Optional –supplied by installer)

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
Page 4 of 30
FR-T Recessed Air Curtain
Riverside Road, Pride Park, Derby, DE24 8HY
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.frenger.co.uk
Frenger Systems is an FTF Group Company
Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
5.0 –Tools Required
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
6.0 –Installation
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.
6.1 –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.
NOTE: For the air curtain to work well, the doorway should be less than the width of the airstream.
Fig 1

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
Page 5 of 30
FR-T Recessed Air Curtain
Riverside Road, Pride Park, Derby, DE24 8HY
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.frenger.co.uk
Frenger Systems is an FTF Group Company
Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
6.2 –Ceiling Suspension
Step 1
Step 2
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.
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.
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.
NOTE: Do not let the hanging rods come below the
bottom of the unit casing or they may prevent the
recessed grille fitting properly.
Fig 2
Fig 3

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
Page 6 of 30
FR-T Recessed Air Curtain
Riverside Road, Pride Park, Derby, DE24 8HY
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.frenger.co.uk
Frenger Systems is an FTF Group Company
Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
Step 3
Step 4
Step 5
If you are installing model FR-T 1500R, fit a 5th M10 threaded rod into the hanging point in the
middle of the unit. For model FR-T 2000R, fit 5th and 6th threaded rods, see Appendices 1 and
Fig 4.
Secure each rod to a suitable structure than can support the weight of the unit (see section 3:
Specifications for weights).
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.
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.

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
Page 7 of 30
FR-T Recessed Air Curtain
Riverside Road, Pride Park, Derby, DE24 8HY
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.frenger.co.uk
Frenger Systems is an FTF Group Company
Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
6.3 –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 FR-T 1000R with 6 brackets fitted on FR-T 1500R and FR-T 2000R (see Fig 5a
and Fig 5b).
Fig 5a; standard width grille
Fig 5b; wider width grille

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
Page 8 of 30
FR-T Recessed Air Curtain
Riverside Road, Pride Park, Derby, DE24 8HY
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.frenger.co.uk
Frenger Systems is an FTF Group Company
Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
Fix the grille as follows:
Step 1
Step 2
Step 3
Step 4
Step 5
Open the hinged inlet grille using a flat bladed
screwdriver to release the quarter turn
fasteners (see Fig 6). There are two fasteners on
FR-T 1500R and FR-T 2000R units. Before lifting
the grille frame into position, remove four (six
on FR-T 1500R/FR-T 2000R) M6 bolts fitted on
the inside edge of air curtain.
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.
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.
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.
Once the above steps are complete the hinged
grille core can be closed, and all the quarter
turn fasteners tightened up.
NOTE: Open the hinged grille core to gain access to
electrical connections, and for servicing and
maintenance.
Fig 6
Fig 7
Fig 8
Fig 9
Fig 10

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
Page 9 of 30
FR-T Recessed Air Curtain
Riverside Road, Pride Park, Derby, DE24 8HY
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.frenger.co.uk
Frenger Systems is an FTF Group Company
Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
7 –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)
Water Pressure Drop
(kPa)
FR-T 1000WR, 2-row (12kW)
15.6
16.1
FR-T 1500WR, 2-row (18kW)
23.4
10.4
FR-T 2000WR, 2-row (24kW)
31.2
16.3
Air Curtain
Water Flow Rate
(l/min at 60/40°C)
Water Pressure Drop
(kPa)
FR-T 1000WR, 3-row (12kW)
8.6
8.3
FR-T 1500WR, 3-row (18kW)
12.9
18.2
FR-T 2000WR, 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:
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 rated and pressure
drops at different water temperatures can be calculated using the coil calculation programme.
Fig 11

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
Page 10 of 30
FR-T Recessed Air Curtain
Riverside Road, Pride Park, Derby, DE24 8HY
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.frenger.co.uk
Frenger Systems is an FTF Group Company
Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
8 –Remote Control Installation
Mount the remote control unit in a convenient position directly to the wall or onto a switch box.
8.1 –Wall mounting
Step 1
Step 2
Step 3
Step 4
9.2 –Switch box mounting
Step 1
Step 2
Step 3
Step 4
Using a screwdriver undo the screw on the top
of the remote-control case and pull the back
case away (see Fig 12).
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).
Connect the RJ plug to the RJ socket on the PCB
in the remote control.
Refit the front case.
Using a screwdriver undo the screw on the top
of the remote-control case and pull the back
case away (see Fig 12).
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).
Connect the RJ plug to the RJ socket on the PCB
in the remote control.
Refit the front case.
NOTE: For optional remote-control settings, see section 10.
Fig 12
Fig 13

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
Page 11 of 30
FR-T Recessed Air Curtain
Riverside Road, Pride Park, Derby, DE24 8HY
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.frenger.co.uk
Frenger Systems is an FTF Group Company
Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
9 –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.
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 –External Controls
9.1 –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). The 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 with 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
Units 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 the done via IN0 using a
remote volt-free contact.
Fig 14

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
Page 12 of 30
FR-T Recessed Air Curtain
Riverside Road, Pride Park, Derby, DE24 8HY
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.frenger.co.uk
Frenger Systems is an FTF Group Company
Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
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 form 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 disables
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)
NOTE: Wire volt-free, remote switch contacts to 2-way screw terminals IN0 and IN1 using 2-core cable.
WARNING: Do not apply any voltage to terminals IN0 and IN1 as this will damage the Ecopower PCB inside the air
curtain.
*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 unplugged and the air curtain stay
working.

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
Page 13 of 30
FR-T Recessed Air Curtain
Riverside Road, Pride Park, Derby, DE24 8HY
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.frenger.co.uk
Frenger Systems is an FTF Group Company
Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
9.2 –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.
9.3 –Weather compensation control (Summer/Winters)
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).
Switch Contact Closed = Heating Enabled (cold day)
Switch Contact Open = Heating Disabled (warm day)
WARNING: Do not apply any voltage to terminal IN1 as this will damage the Ecopower PCB.
NOTE: To promote increased energy saving a more advances weather compensation control strategy is available.
Using a heating curve, the discharge air temperature of the airstream coming from the air curtain is controlled
against the outside air temperature.

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
Page 14 of 30
FR-T Recessed Air Curtain
Riverside Road, Pride Park, Derby, DE24 8HY
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.frenger.co.uk
Frenger Systems is an FTF Group Company
Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
10 –Multiple Air Curtain Systems
For master/slave control, plug and connect units together with RJ extension cables (not supplied) as per Figure 17
below. Each air curtain must have its own electrical supply.
11 –System Configuration
11.1 –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
WARNING: Isolate and disconnect air curtain from the power source before making any changes.

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
Page 15 of 30
FR-T Recessed Air Curtain
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Fax: [phone]
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Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
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 operates only on high
fan speed.
DIP 1
ON
Heat output is governed
by fan speed.
This feature is only use
with electric heated 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
For master/slave
installations. Only the air
sensor in the thermostat
master air curtain is used
to measure air
temperature.
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
NOTE: - Black rectangle in moveable head of DIP switch.
NOTE: A range of advanced factory fitted and plug-in control options are available 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.

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
Page 16 of 30
FR-T Recessed Air Curtain
Riverside Road, Pride Park, Derby, DE24 8HY
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.frenger.co.uk
Frenger Systems is an FTF Group Company
Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
12 –Fan Speed Selection
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
FR-T 1000R –57
FR-T 1500R –58
FR-T 2000R –59
2000
3000
4000
2
2.8
FR-T 1000R –56
FR-T 1500R –56
FR-T 2000R –57
1890
2685
3815
MEDIUM
(blue wire)
3
2.5
FR-T 1000R –54
FR-T 1500R –54
FR-T 2000R –55
1730
2500
3570
LOW
(red wire)
4
2.2
FR-T 1000R –52
FR-T 1500R –52
FR-T 2000R –53
1445
1990
3075
5 –(lowest speed)
2.0
FR-T 1000R –50
FR-T 1500R –51
FR-T 2000R –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 changed per house (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).
Table 5

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
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FR-T Recessed Air Curtain
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Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.frenger.co.uk
Frenger Systems is an FTF Group Company
Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
13 –Remote Control Operation
13.1 Remote Control Switch (for Ambient units)
1On/Off
Turns the air curtain fans On or Off.
2, 3 & 4 Fan speed
Switch fan speed between Low, Medium and High respectively.

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
Page 18 of 30
FR-T Recessed Air Curtain
Riverside Road, Pride Park, Derby, DE24 8HY
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.frenger.co.uk
Frenger Systems is an FTF Group Company
Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
13.2 Ecopower Remote Control (for Electric and Water Heated units)
Use the remote control to operate the air curtain as follows:
1On/Off
Turns the air curtain fans On or Off.
2Manual/Automatic
Switched between Manual and Automatic modes.
The Auto On indicator LED is lit for “Auto Mode” and unlit for “Manual Mode”.
3 & 4 Fan speed
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: If an electric heated air curtain is heating when switched off the fan will run-on for approximately 2
minutes to dissipate excess heat.

FR-T Recessed Air Curtain
Operation and Maintenance
Frenger Systems Limited
Page 19 of 30
FR-T Recessed Air Curtain
Riverside Road, Pride Park, Derby, DE24 8HY
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.frenger.co.uk
Frenger Systems is an FTF Group Company
Registered in England No.03064483. Registered office: 14 Park Row, Nottingham, NG1 6GR. VAT Registration No. 646 6229 20
14 - Commissioning the System
14.1 –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 reached across the doorway with door open or closed.
•Exopower 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 ‘opon doorway’. The air curtain then served an essential purpose by saving energy and providing
comfort to occupants.
Explain that the inlet grille and air filters (if fitted) must be cleaned regularly and the unit serviced at schedule
intervals –see Section 19: Service & Maintenance.
15 – Sign Off
Complete the following once commissioning is completed.
Installer Signature
Customer Signature
Installer Name
Customer name
Installer Company
Customer Company
Date
Date
NOTE: Leave these instructions with the customer/end user or their representative.