Frico Sierra User manual

Sierra
Original instructions
.... 17
EN ....22 SE .... 27
NO .... 33 FR .... 39 DE
....45
NL ....51 ES .... 57 IT .... 63 PL .... 69 RU
....76
FI DK ....82

2
Sierra
Introduktionssidorna består huvudsakligen av bilder. För översättning av de
engelska texter som används, se respektive språksidor.
SE
The introduction pages consist mainly of pictures. For translation of the English
texts used, see the respective language pages.
EN
Introduksjonssidene består hovedsakelig av bilder. For oversettelse av de
engelske tekstene, se de respektive språksidene
NO
Les pages de présentation contiennent principalement des images. Consulter la
page correspondant à la langue souhaitée.
FR
Die Einleitungsseiten bestehen hauptsächlich aus Bildern. Für die Übersetzung
der verwendeten Texte in englischer Sprache, siehe die entsprechenden
Sprachseiten.
DE
Le pagine introduttive contengono prevalentemente immagini. Per le
traduzioni dei testi scritti in inglese, vedere le pagine nelle diverse lingue.
IT
Początkowe strony zawierają głównie rysunki. Tłumaczenie wykorzystanych
tekstów angielskich znajduje się na odpowiednich stronach językowych.
PL
RU Страницы в начале Инструкции состоят в основном из рисунков, схем и
таблиц. Перевод встречающегося там текста приведен в разделе RU.
Esittelysivut koostuvat lähinnä kuvista. Suvuilla olevien enlanninkielisten
sanojen käännökset löytyvät ko. kielisivuilta.
FI
Introduktionssiderne består hovedsageligt af billeder. For oversættelse af de
engelske tekster, se siderne for de respektive sprog.
DK
De inleidende pagina's bevatten hoofdzakelijk afbeeldingen. Voor een vertaling
van de gebruikte Engelse teksten, zie de pagina's van de resp. taal.
NL
Las páginas introductorias contienen básicamente imágenes. Consulte la
traducción de los textos en inglés que las acompañan en las páginas del idioma
correspondiente.
ES

393 363
2108/2608
50
M8
SIFEC - W - VL - A
206
156
62
102
M8
M8
SIFEC - W - VR - A
206
156
62
102
SIFEC - W - VL - B SIFEC - W - VR - B
206
156
62
102
206
156
62
102
SIFEC - E - VR
393 363
2108/2608
50
M8
SIFEC - W - VL - A
206
156
62
102
M8
M8
SIFEC - W - VR - A
206
156
62
102
SIFEC - W - VL - B SIFEC - W - VR - B
206
156
62
102
206
156
62
102
SIFEC - E - VR
393 363
2108/2608
50
M8
SIFEC - W - VL - A
206
156
62
102
M8
M8
SIFEC - W - VR - A
206
156
62
102
SIFEC - W - VL - B SIFEC - W - VR - B
206
156
62
102
206
156
62
102
SIFEC - E - VR
Top view of the top
Top view of the bottom
3
Sierra
Vertical mounting
393 363
2108/2608
50
M8
SIFEC - W - VL - A
206
156
62
102
M8
M8
SIFEC - W - VR - A
206
156
62
102
SIFEC - W - VL - B SIFEC - W - VR - B
206
156
62
102
206
156
62
102
SIFEC - E - VR
L
[mm]
SIFEC20-V 2108
SIFEC25-V 2608
Inside thread : 1", DN25
FC FC
FC FC
FC Frico Control
See Product key.

SIFEC- VL - A
4
Sierra
Note! The air curtain
must be secured in the
wall or ceiling.
M8
180 mm
Minimum distance
Vertical mounting
Drilling template
Scale 1:1 on www.frico.net
FC Frico Control
PC board FC is integrated within the
air curtain at delivery.
254
206
156
169 96
29040
56
Ø50
(2x)
(4x)
R46

80 mm
5
Sierra
Distance water connections - end
50 D
D
[mm]
SIFEC20WL-V 50
SIFEC20WH-V 100
SIFEC25WL-V 210
SIFEC25WH-V 260
Minimum distance
Vertical mounting
Removing the front Removing the inlet grill
1
2
3

6
Sierra
151
117130
106 4xM8
140
194
L363
393
Vertical mounting
Extension hood SIFEH
SIFEH
AXP300
Item
number
Type Used for Consists
of
10234 SIFEH* SIFEC-V 1
10028 AXP300 SIFEC-V 1
330955 FH1025 SIFECW-V 2
*See separate manual. FH1025
Accessories

PC board FC is integrated within the air curtain at delivery.
SIFEC HL
7
Sierra
Horizontal mounting
151
117130
106 4xM8
140
194
L363
393
L
[mm]
SIFEC10-H 1124
SIFEC15-H 1624
SIFEC20-H 2124
SIFEC25-H 2624
Inside thread : 3/4", DN20
151
117130
106 4xM8
140
194
L363
393
FC Frico Control

42
307
140 Ø12
Ø12
262
51
39
36
21
8
Sierra
Removing the frontMinimum distance
SIFEC E: 200 mm
SIFEC W: 180 mm
Horizontal mounting
Wall bracket SIFWB

SIFW
FH1020
Item
number
Type Used for Consists
of
251886 SIFWBB SIFEC-H 1
251887 SIFWBP SIFEC-H 1
251888 SIFWBMP SIFEC-H 1
18059 PA34CB15* SIFEC10/15-H 4
18060 PA34CB20* SIFEC20-H 6
18061 PA34CB30* SIFEC25-H 8
18062 PA34WS15* SIFEC10/15-H 4
18063 PA34WS20* SIFEC20-H 6
18064 PA34WS30* SIFEC25-H 8
18056 PA34TR15* SIFEC10/15-H 4
18057 PA34TR20* SIFEC20-H 6
18058 PA34TR30* SIFEC25-H 8
18065 PA34VD15* SIFEC10/15-H 4
18066 PA34VD20* SIFEC20-H 6
18067 PA34VD30* SIFEC25-H 8
237568 FH1020 SIFECW-H 2
PA34TRPA34WS
Accessories
PA34VDPA34CB
9
Sierra
SDM
VKF
VPFC
Valve systems
Item
number
Type Dimension
valves
Flow range
[l/s]
238293
VPFC15LF DN15 0,012-0,068
238294
VPFC15NF DN15 0,024-0,13
238295
VPFC20 DN20 0,058-0,32
238296
VPFC25 DN25 0,10-0,60
238297
VPFC32 DN32 0,22-1,03
See separate manual.
Horizontal mounting
See separate manual.

10
Sierra
Item
number
Type Name Dimensions
74684
FCDA
FC Direct 89x89x26 mm (FCCF)
74685
FCSA
FC Smart 89x89x26 mm (FCCF)
74686
FCPA
FC Pro 89x89x26 mm (FCCF)
74687
FCBA
FC Building 89x89x26 mm (FCCF)
Control systems
FCBC05/10/25
FCSC10/25
FCDCFCWTA
FCTXRF
FCBC05FCDCFCCF
Item
number
Type Dimensions
74694
FCRTX
39x39x23 mm
74695
FCOTX
39x39x23 mm
74699
FCLAP
89x89x26 mm
74702
FCWTA SIFEC W
17495
FCDC
74718
FCBC05 5 m
74719
FCBC10 10 m
74720
FCBC25 25 m
74721
FCSC10 10 m
74722
FCSC25 25 m
74703
FCTXRF for FC Smart, FC Pro
89x89x26 mm
Accessories
FCDA - FC Direct FCSA - FC Smart
FCPA - FC Pro FCBA - FC Building
FCLAP
See separate manual for FC.
FCBC10FCDCFCCF FCLAP
FCBC10FCDCFCCF FCLAP FCTXRF FCBC10FCDCFCCF FCBAP
FCSC10
FCRTX
FCSC10
FCOTX
FCBC10
The air curtain must be supplemented with a control system.

SIFEC A
H1 H2N
FCBASEPCB REA
230V IN
L PE
N
Heating
Trafo
N
Motor
L
Motor
GND
0-10V
PWM
Alarm
Sensor
I1 I2 O1O2
A1 A2
GND
GND
B1B2 D1 D2
ON OFF
Termination
MMM
PE
+12V
HI
LO
GND
+12V
HI
LO
BUS 1 BUS 2
GND
230V~
Corinte SIFEC A
246951
NL
SIFEC10: 2 Motors
SIFEC15: 3 Motors
SIFEC20: 4 Motors
SIFEC25: 5 Motors
11
Sierra
Wiring diagrams for control system in the FC manual.

SIFEC W
Inlet sensor
MMM
230V~
NL
FCBASEPCB RW
Motor
GND
0-10V
PWM
Alarm
Sensor
I1 I2 O1O2
A1 A2
GND
GND
B1 B2 D1 D2
ON OFF
Termination
H1 H2N
230V IN
LPE
N
Heating
Trafo
N
Motor
L
PE
+12V
HI
LO
GND
+12V
HI
LO
BUS 1 BUS 2
GND
SIFEC W
246950
SIFEC10: 2 Motors
SIFEC15: 3 Motors
SIFEC20: 4 Motors
SIFEC25: 5 Motors
Outlet sensor
12
Sierra
Wiring diagrams for control system in the FC manual.

K2
K1
TS1
TS2
FCBASEPCB REA
Motor
GND 0-10V PWM Alarm
Sensor
I1 I2 O1O2
A1 A2
GND GND
B1 B2 D1 D2
ON
OFF
Ter m ination
NL3L2L1
MMM
Inlet sens or
H1 H2N
230V IN
LPE
N
Heating
Tr afo
N
Motor
L
PE
+12V
HI LO
GND +12V
HI LO
BUS 1 BUS 2
GND
Outlet sensor
LN
SIFEC 10E/15E
246952
400V 3~ 230V 1~
SIFEC10: 2 Motors SIFEC15: 3 Motors SIFEC20: 4 Motors SIFEC25: 5 Motors
SIFEC10E / 15E
13
Sierra
Wiring diagrams for control system in the FC manual.

K2
K1
TS2
TS1
FCBASEPCB REA
Mot or
GND 0-10V PWM Alarm
Sensor
I1 I2 O1O2
A1 A2
GND GND
B1 B2 D1 D2
ON
OFF
Termination
MM
K2
K1
TS3
TS4
M
I nlet s ensor
H1 H2N
230V IN
LPE
N
Heating
Trafo
N
Mot or
L
PE
+12V
HI LO
GND +12V
HI LO
BUS 1 BUS 2
GND
O ut le t sensor
NL3L2L1
400 V 3~
LN
230V 1~
SIFEC 20E/25E
246953
SIFEC10: 2 Motors SIFEC15: 3 Motors SIFEC20: 4 Motors SIFEC25: 5 Motors
SIFEC20E / 25E
14
Sierra
Wiring diagrams for control system in the FC manual.

Contact Frico before ordering for more information about the product and special adaptations.
HL HR
AA
BB
Product key
Type - Unit shape - Connections position - Material / Colour
Example: SIFEC20WL - VL - A - P
EN Connection position*
SE Anslutningsposition
NO Tilkoblingsposisjon
DE Position der Anschlüsse
RU Место подключений
FR Position du raccord
ES Posición de la conexión
NL Positie aansluitingen
PL Położenie złączy
IT Posizione di collegamento
DK Tilslutningsposition
FI Liitäntöjen sijainnit
15
Sierra
Type See Technical specications.
Unit shape
HL (Horizontal, connections on the left)
HR (Horizontal, connections on the right)
VL (Vertical left) or
VR (Vertical right) seen from inside
Connection position* A or B, see sketch
Material / Colour
P = Polished stainless steel
B = Brushed stainless steel
MP = Mirror polished stainless steel
State RAL code = Powder coating RAL
State NCS code = Powder coating NCS

3Electrical heat - SIFEC E (IP20)
2Water heat - SIFEC WL (IP20)
1Ambient, no heat - SIFEC A (IP20)
2Water heat - SIFEC WH (IP20)
Voltage motor: 230V~
*1) Low/high airow (2V/10V).
*2) Sound power (LWA) measurements according to ISO 27327-2: 2014, Installation type E.
*3) Sound pressure (LpA). Conditions: Distance to the unit 5 metres. Directional factor: 2. Equivalent
absorption area: 200 m². At low/high airow (2V/10V).
*4) ∆t = temperature rise of passing air at maximum heat output and low/high airow (2V/10V).
*5) Applicable at water temperature 60/40 °C, air temperature, in +18 °C.
*6) Applicable at water temperature 80/60 °C, air temperature, in +18 °C.
*7) Horizontal mounting
*8) Vertical mounting
*5,6) See www.frico.net for additional calculations.
Technical specications
16
Sierra
Type Output*6Airow*1∆t*4,6 Water Sound Sound Amperage Weight
H*7
[kW]
V*8
[kW] [m3/h]
H*7
[°C]
V*8
[°C]
volume
[l]
power*2
[dB(A)]
pressure*3
[dB(A)]
motor
[A] [kg]
SIFEC10WH-H 11 - 850/1700 24/18 - 1,1 77 46/61 2,3 59
SIFEC15WH-H 15 - 1250/2600 23/17 - 1,9 79 48/63 3,2 69
SIFEC20WH-H/V 20 28 1650/3300 24/18 32/25 2,5 82 48/66 4,1 78
SIFEC25WH-H/V 26 32 2200/4250 23/18 29/22 3,3 83 49/67 5,1 87
Type Output*5Airow*1∆t*4,5 Water Sound Sound Amperage Weight
H*7
[kW]
V*8
[kW] [m3/h]
H*7
[°C]
V*8
[°C]
volume
[l]
power*2
[dB(A)]
pressure*3
[dB(A)]
motor
[A] [kg]
SIFEC10WL-H 8,5 - 850/1700 19/15 - 2,0 77 46/61 2,3 63
SIFEC15WL-H 14 - 1250/2600 24/19 - 3,2 79 48/63 3,2 73
SIFEC20WL-H/V 21 21 1650/3300 24/19 24/19 4,3 82 48/66 4,1 82
SIFEC25WL-H/V 28 25 2200/4250 24/20 22/17 5,4 83 49/67 5,1 91
Type Output
steps
[kW]
Airow*1
[m3/h]
∆t*4
[°C]
Sound
power*2
[dB(A)]
Sound
pressure*3
[dB(A)]
Amperage
motor
[A]
Voltage [V]
Amperage [A]
(heat)
Weight
[kg]
SIFEC10E8-H 2,7/5,5/8,1 900/1850 26/13 77 46/61 2,3 400V3~/11,7 48
SIFEC15E12-H 3,9/7,8/12 1400/2750 26/13 79 48/63 3,2 400V3~/16,9 62
SIFEC20E16-H/V 5,4/11/16 1850/3600 26/13 82 48/66 4,1 400V3~/23,4 75
SIFEC25E20-H/V 6,6/13/20 2400/4500 25/13 83 49/67 5,1 400V3~/28,6 89
Type Output
[kW]
Airow*1
[m3/h]
Sound
power*2
[dB(A)]
Sound
pressure*3
[dB(A)]
Amperage
motor
[A]
Weight
[kg]
SIFEC10A-H 0 900/1850 77 46/61 2,3 44
SIFEC15A-H 0 1400/2750 79 48/63 3,2 54
SIFEC20A-H/V 0 1850/3600 82 48/66 4,1 63
SIFEC25A-H/V 0 2400/4500 83 49/67 5,1 72

Sierra
17
EN
Installation and operating instructions
General Instructions
Read these instructions carefully prior to
installation and use. Keep this manual for
future reference.
The product may only be used as set out in
the assembly and operating instructions. The
guarantee is only valid should the product be used
in the manner intended and in accordance with
the instructions.
Application
Sierra creates an ecient temperature dividing
air barrier in door openings. The recommended
installation width of Sierra is 5 m with air
curtains mounted on both sides of the opening
and its recommended installation height is
3,5 m. The air curtain is available without heat,
with electrical heating and with water heating.
Protection class: IP20.
Operation
Air is drawn in at the top/rear of the unit and
blown downwards/outwards shielding the
door opening and minimizing heat loss. To
achieve the optimum air curtain effect the unit
must extend the full height/width of the door
opening.
The grille for directing the outlet air is
adjustable and is normally angled outwards to
achieve the best protection against incoming
air.
The eciency of the air curtain depends on
the air temperature, the pressure differencial
across the doorway and any wind load.
NOTE! Negative pressure in the building
considerably reduces the eciency of the air
curtain. The ventilation should therefore be
balanced.
Mounting
The air curtain range includes units for vertical
and horizontal installation. The product must
be mounted in such a way to allow future
service and maintenance. Ensure that the
front is accessible and can be fully opened. A
distance of 80 mm is required to remove the
front.
When mounting a product in stainless steel,
the protective plastic shall remain on the
product. The plastic is removed only when
mounting and installation are completed. Be
careful to not damage the surfaces.
Vertical mounting
The air curtain is mounted vertically as close
as possible to the door. For the best effect air
curtains should be placed on both sides of the
opening.
The air curtain is installed on adjustable feet
which makes it possible to compensate for
any surface undulations. The feet are attached
to the oor with fasteners appropriate to the
surface and covered by a frame. Fasteners are
not included. A drilling template for the oor
is included in delivery and also available at
www.frico.net.
Note! The air curtain must be secured in the
wall or ceiling. The M8 press nut on the top of
the unit is used for this, see gure.
The extension hood (accessory) lls the space
between the unit and the ceiling and provides a
neater installation.
See the introduction pages.
Horizontal mounting
The air curtain is installed horizontally with the
outlet air grille facing downwards as close to
the door as possible. Minimum distance from
outlet to oor for electrically heated units is
1800 mm. For other minimum distances, see g.
Mounting with wall brackets
Wall brackets SIFW are available as accessories.
Two brackets are required for each unit.
Horizontal mounting on the ceiling
Threaded rods, wire suspension kits and ceiling
brackets for ceiling mounting are available as
accessories.
Opening the vertical unit
To proceed with electrical and water
connections, the front must be removed. See
the introduction pages. For a better accessibilty,
the inlet grille and the cover panel behind it can
also by removed as well as the back of the unit.
• Disconnect the power supply.
Removing the front
• Remove the 4 screws accessibles through the
outlet grill.
• Open the front and pull it sideways/outwards
to remove it.

[kW] [V] [mm2]
0 230V~ 1,5
SIFEC10E8 8 400V3~ 2,5
SIFEC15E12 12 400V3~ 4
SIFEC20E16 16 400V3~ 6
SIFEC25E20 20 400V3~ 10
Sierra
18
EN
*) Dimensioning of external wiring shall comply with
applicable regulations and local deviations may occur.
Control
Type Output Voltage Minimum
area*
Start-up (E)
When the unit is used for the rst time or after
a long period of non-use, smoke or an odour
may result from dust or dirt which has collected
on the element. This is completely normal and
disappears after a short time.
Electrical installation
The installation, which should be preceded by
an isolator switch with a contact separation
of at least 3 mm, should only be wired by a
competent electrician and in accordance with
the latest edition of IEE wiring regulations.
The air curtain has an integrated PC board
which is connected to the selected external
control system FC. FC must be ordered
separately. FC is supplied pre-programmed.
Communication- and sensor cables are
connected to the PC board.
Should more than one air curtain be
controlled by a single FC, an additional
communication cable FCBC per unit will be
required. See manual for FC.
Vertical mounting
Control is supplied by 230V~ to the terminal
block. The PC board is accessed via cable glands
on the top or bottom of the unit. Pierce the
gland with a screwdriver before entering the
cable. If necessary, the cables can be routed
through the unit. Bundle the cables inside the
unit to prevent that they will be drawn into
the fans or get in contact with the heating
elements.
Removing the inlet grille
• Remove the screw at the lower end of the
grille.
• Pull the grille upwards to unhatch it and then
outwards to remove it.
Removing the cover panel behind the inlet grill
• Remove the 2 screws of the panel.
• Remove the panel carefully, not to damage
the sensor attached to it.
Opening the horizontal unit
To proceed with electrical connections, the
front must be removed. See the introduction
pages.
• Disconnect the power supply.
Removing the front
• Remove the screws accessible through the
outlet grill (SIFEC10/15: 2 screws, SIFEC20/25:
4 screws).
• Open the front and pull it outwards/upwards
to remove it.
Removing the inlet grille
• Pull the grille upwards to remove it.
For units with electrical heating, the power
supply for heating (400V3~) is connected to
the terminal block. Power and control must be
supplied separately. The electrical connection
is made on the top or bottom of the unit
depending on selection. See product key.
Connections made from below the unit
must be prepared in the oor according to
the drawing. A drilling template for the oor
is included in delivery and also available at
www.frico.net.
Horizontal mounting
The electrical connection is made on the top
of the unit. Pierce the gland with a screwdriver
before entering the cable. Control is supplied
by 230V~ to the terminal block.
For units with electrical heating, the power
supply for heating (400V3~) is connected to
the terminal block. Power and control must be
supplied separately.
The largest cable diameter for the terminal
block is 16 mm². The cable glands used must
meet the protection class requirements. In the
distribution board, it is to be indicated that ”the
air curtains can be supplied from more than
one connection”.

Sierra
19
EN
Connecting the water coil (W)
The installation must be carried out by an
authorised installer.
The water coil has copper tubes with
aluminium ns and is suitable for connection
to a closed water heating system. The heating
coil must not be connected to a mains pressure
water system or an open water system.
Note that the unit shall be preceded by a
regulating valve, see Frico valve kit.
Valves must be installed outside the unit.
Note that the actuator needs power supply and
control signal from the integrated PC board.
NOTE: Care must be taken when connecting
the pipes. Use a pipe wrench or a similar
tool to grip the air curtain connections to
prevent straining of the pipes and subsequent
water leakage during connection to the water
supply pipe-work.
The connections to the heating coil must be
equipped with shut off valves to allow trouble-
free removal.
A vent valve should be connected at a high
point in the pipe system. Flexible hoses are
available as accessories.
Vertical mounting
The water coil is connected on the top or the
bottom of the unit via connections DN25 (1’’),
internal thread. See product key.
Connections made from below the unit
must be prepared in the oor according to
the drawing. A drilling template for the oor
is included in delivery and also available at
www.frico.net. Note the distance between the
water connections and the end of the unit. See
the introduction pages.
Horizontal mounting
The water coil is connected on the top of the
unit via connections DN20 (3/4’’), internal
thread.
Maintenance
Unit with water heating
The appliance lter should be cleaned regularly
to ensure the air curtain effect and heat
emission from the device. How often depends
on local circumstances. A clogged lter is not a
risk, but the appliance function can fail.
1. Disconnect the power supply.
2. Remove the inlet grill to acces the lter.
3. Remove the lter and vacuum clean or wash
it. If the lter is clogged or damaged, it may
need to be changed.
All units
Since fan motors and other components are
maintenance-free, no maintenance other than
cleaning is necessary. The level of cleaning can
vary depending on local conditions. Undertake
cleaning at least twice a year. Inlet and exhaust
grilles, impeller and elements can be vacuum
cleaned or wiped using a damp cloth. Use a
brush when vacuuming to prevent damaging
sensitive parts. Avoid the use of strong alkaline
or acidic cleaning agents.
Basic setting fan speed
The fan speed when the door is open is
set using the control. Note that the airow
direction and the fan speed may need ne
adjustment depending on the loading of the
door.
Filter (W)
The water coil is protected against dirt and
blockage by an internal air lter which covers
the coil face.
Service, repairs and maintenance
For all service, repair and maintenance rst
carry out the following:
1. Disconnect the power supply.
2. See previous section on how to remove front,
inlet grill and cover panel behind it.
3. After service, repairs and maintenance fasten
the parts that have been removed.
Adjustment of the air curtain and airow
The direction and speed of the airow should
be adjusted considering the load on the
opening. Pressure forces affect the airstream
and force it inwards towards the premises
(when the premises are heated and the
outdoor air is cold).
The airstream should, therefore, be directed
outwards to withstand the load. Generally
speaking, the higher the load, the greater the
angle required.
Temperature control
Temperature control of FC maintains the
exhaust temperature. Should the temperature
exceed the preset value, the overheating alarm
will activate. For more information see the FC
manual.

Sierra
20
EN
Residual current circuit breaker (E)
When the installation is protected by means of
a residual current circuit breaker, which trips
when the appliance is connected, this may be
due to moisture in the heating element. When
an appliance containing a heater element has
not been used for a long period or stored in
a damp environment, moisture can enter the
element.
Troubleshooting
If the fans are not running or do not perform
properly, check the following:
• The power supply.
• That the intake grille/lter is not dirty.
• That the motor's safety cut-out has not been
deployed.
• Functions and settings of the FC control
system, see the FC manual.
If there is no heat, check the following:
• Functions and settings of the FC control
system, see the FC manual.
For units with electrical heating, also check the
following:
• Power supply to electric heater coil; check
fuses and circuit-breaker (if any).
• That the overheat protection has not been
deployed.
For units with a water coil, also check the
following:
• That the water coil is air free.
• That there is sucient water ow and
pressure.
• That incoming water is heated adequately.
If the fault cannot be rectied, please contact a
qualied service technician.
Safety cut-out
All motors are equipped with an integrated
safety cut-out. This will operate, stopping the
air curtain should the motor temperature rise
excessively or the electronics fail or overheat.
The cut-out will automatically reset when the
motor temperature has returned to within the
motor’s operating limits. Failure or damage to
electronics components may require repair or
replacement of such components or the entire
product.
Fan replacement
To access the fans, the L-shaped prole must
be removed by loosening its screws.
1. Determine which of the fans is not
functioning.
2. Disconnect the cables from the relevant fan.
3. Remove the screws securing the fan and lift
the fan out.
4. Install the new fan as above in reverse order.
Replacing heating elements/heating
package (E)
1. Mark and disconnect the cables to the
heating elements/package.
2. Remove the mounting screws securing the
heating elements/package in the unit and lift
the heating elements/package out.
3. Install the new heating elements/package in
reverse order to the above.
Replacing the PC board
1. The PC board is located in the terminal box.
2. Mark and disconnect the cables to the PC
board.
3. Unhatch the board from its PCB snap-in
spacers and lift out.
4. Install the new PC board as above in reverse
order.
Replacing the water coil (W)
1. Shut off the water supply to the unit.
2. Disconnect the connections to the water coil.
3. Remove the mounting screws securing the
coil in the unit and lift out.
4. Install the new coil in reverse order to the
above.
Overheating
The air curtain unit with electrical heating is
equipped with an overheat protection. If it is
deployed due to overheating, reset as follows:
1. Disconnect the power supply with the isolator
switch.
2. Allow the electrical coil to cool.
3. Determine the cause of overheating and
rectify the fault.
4. Reconnect the unit.