Smith's Heating First Ostro Guide

Issue 002 - April 2020 | SmithsEP.co.uk | 1
Installation, commissioning
and user manual
Air curtains
Ostro
Issue 001 | April 2020
ENGLISH | UK | IRL | SmithsEP.co.uk

2 | SmithsEP.co.uk | Issue 001 - April 2020
Technical manual Ostro air curtain v201709
www.sonniger.com 2
1. PURPOSE OF THE DEVICE
Ostro air curtains are designed for use in regions with moderate or cold climates in spaces where the temperature range is -10C to
+40C, in conditions that are free from external contaminants such as pollen and hydrometeor (horizontal precipitation). In winter air
curtains protect against heat loss in rooms by directing a warm air stream across door ways preventing cold air from entering the
heated space. In summer, the air curtains can be used as cooling devices to prevent the entry of hot air and pollutants from the
outside.
The air curtains are designed to protect against heat losses in buildings of medium and high capacity and with a required
mounting height is of 4 m such as:
supermarkets, large retail space,
car showrooms and service stations,
sports and show halls,
exhibition surfaces
2. BASIC TECHNICAL PARAMETERS
Noise level measured in distance of 3 m in open space building
Parametry
Ostro Curtain with water heater Ostro Curtain with electric heater
100W 150W 200W 100E 150E 200E
Length of unit m 1 1.5 2 1 1.5 2
Max. installation height m 4 4 4 4 4 4
Max air output m³/h 1200/1550/2000 2200/3000/3600 2900/4000/4800 1200/1550/2000 2200/3000/3600 2900/4000/4800
Heat output kW 10-16 20-29 25-40 4-7 6.5-11 8.5-14
Max working pressure MPa 1.6 1.6 1.6 - - -
Diameter of connection nozzles inches 1/2” 1/2” 1/2” - - -
Motor power supply, consumption V/Hz A 230/50 1.95A 230/50 2.6A 230/50 2.6A 230/50 1.95A 230/50 2.6A 230/50 2.6A
Motor power kW 51/106/220 75/162/320 75/162/320 51/106/220 75/162/320 75/162/320
Electric heating power supply, consumption V/Hz A - - - 400/50 11.0A 400/50 16.6A 400/50 22.4A
Weight lled with water/without water kg 18.0/16.5 22.6/20.5 31.0/28.0 17 21.5 29
Volume level I/II/III* dB (A) 44/49/59 45/49/61 46/49/61 44/49/59 45/49/61 46/49/61
Protection class IP - IP21 IP21 IP21 IP21 IP21 IP21
Parametry
Ostro Curtain without heater
100C 150C 200C
Length of unit m 1 1.5 2
Max. installation height m 4 4 4
Max air output m³/h 1250/1600/2100 2250/3100/3700 3000/4200/5000
Heat output kW - - -
Max working pressure MPa - - -
Diameter of connection nozzles inches - - -
Motor power supply, consumption V/Hz A 230/50 1.95A 230/50 2.6A 230/50 2.6A
Motor power kW 51/106/220 75/162/320 75/162/320
Electric heating power supply, consumption V/Hz A ---
Weight lled with water/without water kg 15 18.5 25
Volume level I/II/III* dB (A) 45/50/60 46/50/61 47/50/61
Protection class IP - IP21 IP21 IP21
* Noise level measured in distance of 3m in an open space

Issue 002 - April 2020 | SmithsEP.co.uk | 3
Technical manual Ostro air curtain v201709
www.sonniger.com 3
3. HEAT OUTPUT RANGES
100-150-200 W Ostro Air curtains with water heater
100-150-200 E Ostro Air curtains with electric heater
J
Ostro E series (with electric heater) use a new type of PTC electric coils. It is a
modern and safe solution. The additional advantages of PTC heaters are:
Lack of voltage on surface of electric coil
Significantly lower coil temperature in comparison to old type of electric heaters
(e.g. heating wires, spirals)
Large heat exchange surface (surface of contact of the heat exchanger with
heated air)
Fully automatic heat control depending on air flow
Complete elimination of the risk of system overheating due to self regulating
heating modules (heat capacity automaticaly reduces when air flow goes down)
Low energy consumption
Ostro Air Curtain 100W
inlet/outlet water temperature water 50/30 °C water 60/40 °C water 70/50 °C water 80/60 °C water 90/70 °C
inlet air temperature 0 5 10 15 20 0 5 10 15 20 0 5 10 15 20 0 5 10 15 20 0 5 10 15 20
III max air ow - 2000 m³/h
heat output (kW) 6.6 5.6 4.6 3.6 2.6 9.0 7.9 6.9 5.8 4.8 11.3 10.3 9.2 8.1 7.1 13.7 12.6 11.5 10.5 9.4 16.0 14.9 13.9 12.8 11.7
outlet air temperature (°C) 11.4 14.9 18.3 21.9 25.4 14.9 18.3 21.8 25.2 28.7 18.4 21.8 25.2 28.7 32.1 21.9 25.3 28.7 32.1 35.5 25.4 28.8 32.2 35.6 39.0
water ow (m³/h) 0.2 0.2 0.2 0.1 0.1 0.4 0.3 0.3 0.2 0.2 0.5 0.4 0.4 0.3 0.3 0.6 0.5 0.5 0.4 0.4 0.7 0.6 0.6 0.5 0.5
pressure drop (kPa) 1.0 1.0 0.6 0.6 0.3 2.0 2.0 1.0 1.0 1.0 4.0 3.0 2.0 2.0 1.0 5.0 5.0 4.0 3.0 2.0 7.0 6.0 5.0 5.0 4.0
III max air ow - 1550 m³/h
heat output (kW) 5.9 5.0 4.2 3.3 2.4 7.9 7.0 6.1 5.3 4.4 10.0 9.1 8.2 7.2 6.3 12.0 11.1 10.2 9.2 8.3 14.0 13.1 12.2 11.2 10.3
outlet air temperature (°C) 12.5 15.8 19.1 22.4 25.8 16.4 19.6 22.9 26.2 29.5 20.3 23.5 26.8 30.0 33.3 24.2 27.4 30.6 33.9 37.1 28.0 31.3 34.5 37.7 40.9
water ow (m³/h) 0.2 0.2 0.1 0.1 0.1 0.3 0.3 0.2 0.2 0.2 0.4 0.4 0.3 0.3 0.2 0.5 0.4 0.4 0.4 0.3 0.6 0.5 0.5 0.5 0.4
pressure drop (kPa) 1.0 1.0 0.5 0.5 0.2 2.0 2.0 1.0 1.0 0.0 3.0 2.0 2.0 1.0 1.0 4.0 3.0 3.0 2.0 2.0 6.0 5.0 4.0 4.0 3.0
III max air ow - 1200 m³/h
heat output (kW) 5.3 4.5 3.8 3.0 2.3 7.0 6.3 5.5 4.7 3.9 8.8 8.0 7.2 6.4 5.6 10.5 9.7 8.9 8.1 7.3 12.2 11.4 10.6 9.8 9.0
outlet air temperature (°C) 13.7 16.8 19.9 23.0 26.2 18.0 21.1 24.1 29.2 30.3 22.3 25.3 28.4 31.5 34.5 26.6 29.6 32.7 35.7 38.8 30.9 33.9 36.9 40.0 43.0
water ow (m³/h) 0.2 0.2 0.1 0.1 0.1 0.3 0.2 0.2 0.2 0.1 0.3 0.3 0.3 0.2 0.2 0.4 0.4 0.4 0.3 0.3 0.5 0.5 0.4 0.4 0.4
pressure drop (kPa) 1.0 0.8 0.5 0.5 0.2 1.0 1.0 1.0 0.7 0.6 2.0 2.0 1.0 1.0 1.0 3.0 3.0 2.0 2.0 1.0 4.0 4.0 3.0 3.0 2.0
Ostro Air Curtain 150W
inlet/outlet water temperature water 50/30 °C water 60/40 °C water 70/50 °C water 80/60 °C water 90/70 °C
inlet air temperature 0 5 10 15 20 0 5 10 15 20 0 5 10 15 20 0 5 10 15 20 0 5 10 15 20
III max air ow - 3600 m³/h
heat output (kW) 13.5 11.7 10.0 8.2 6.4 17.4 15.6 13.8 12.1 10.3 21.3 19.5 17.7 15.9 14.1 25.1 23.3 21.6 19.7 18.0 29.0 27.2 25.4 23.6 21.8
outlet air temperature (°C) 11.9 15.4 18.9 22.5 26.0 15.1 18.6 22.1 25.7 29.2 18.3 21.8 25.3 28.9 32.4 21.5 25.0 28.6 32.0 35.6 24.7 28.2 31.7 35.2 38.7
water ow (m³/h) 0.5 0.4 0.3 0.2 0.2 0.6 0.6 0.5 0.4 0.3 0.8 0.7 0.7 0.6 0.5 1.0 0.9 0.8 0.7 0.7 1.2 1.1 1.0 0.9 0.8
pressure drop (kPa) 4.0 3.0 2.0 1.0 1.0 8.0 6.0 4.0 3.0 2.0 12.0 10.0 8.0 6.0 5.0 17.0 14.0 12.0 10.0 8.0 22.0 19.0 17.0 14.0 12.0
III max air ow - 3000 m³/h
heat output (kW) 12.5 10.9 9.3 7.8 6.1 16.1 14.4 12.8 11.2 9.6 19.6 17.9 16.3 14.7 13.1 23.1 21.4 19.8 18.2 16.6 26.5 24.9 23.3 21.6 20.0
outlet air temperature (°C) 12.7 16.1 19.5 22.9 36.3 16.2 19.6 23.0 26.4 29.8 19.7 23.1 26.5 29.9 33.2 23.2 26.5 29.9 33.3 36.7 26.6 30.0 33.4 36.7 40.1
water ow (m³/h) 0.4 0.4 0.3 0.2 0.2 0.6 0.5 0.4 0.4 0.3 0.7 0.7 0.6 0.5 0.5 0.9 0.8 0.8 0.7 0.6 1.1 1.0 0.9 0.8 0.8
pressure drop (kPa) 4.0 3.0 2.0 1.0 0.6 6.0 5.0 4.0 3.0 2.0 10.0 8.0 6.0 5.0 4.0 14.0 12.0 10.0 8.0 7.0 18.0 16.0 14.0 12.0 10.0
III max air ow - 2200 m³/h
heat output (kW) 11.0 9.7 8.4 7.0 5.7 14.0 12.6 11.3 9.9 8.6 16.9 15.5 14.2 12.9 11.5 19.8 18.4 17.1 15.7 14.4 22.7 21.3 20.0 18.6 17.3
outlet air temperature (°C) 14.2 17.4 20.6 23.7 26.9 18.2 21.3 24.5 27.7 30.9 22.1 25.3 28.5 31.6 34.8 26.1 29.2 32.4 35.6 38.7 30.0 33.1 36.3 39.5 42.6
water ow (m³/h) 0.4 0.3 0.2 0.2 0.1 0.5 0.4 0.4 0.3 0.3 0.6 0.6 0.5 0.4 0.4 0.8 0.7 0.6 0.6 0.5 0.9 0.8 0.8 0.7 0.6
pressure drop (kPa) 3.0 2.0 1.0 1.0 0.6 5.0 4.0 3.0 2.0 1.0 7.0 6.0 5.0 4.0 3.0 10.0 8.0 7.0 6.0 5.0 13.0 11.0 10.0 8.0 7.0
Technical manual Ostro air curtain v201709
www.sonniger.com 3
3. HEAT OUTPUT RANGES
100-150-200 W Ostro Air curtains with water heater
100-150-200 E Ostro Air curtains with electric heater
J
Ostro E series (with electric heater) use a new type of PTC electric coils. It is a
modern and safe solution. The additional advantages of PTC heaters are:
Lack of voltage on surface of electric coil
Significantly lower coil temperature in comparison to old type of electric heaters
(e.g. heating wires, spirals)
Large heat exchange surface (surface of contact of the heat exchanger with
heated air)
Fully automatic heat control depending on air flow
Complete elimination of the risk of system overheating due to self regulating
heating modules (heat capacity automaticaly reduces when air flow goes down)
Low energy consumption
Ostro Air Curtain 200W
inlet/outlet water temperature water 50/30 °C water 60/40 °C water 70/50 °C water 80/60 °C water 90/70 °C
inlet air temperature 0 5 10 15 20 0 5 10 15 20 0 5 10 15 20 0 5 10 15 20 0 5 10 15 20
III max air ow - 4800 m³/h
heat output (kW) 19.5 17.2 14.8 12.4 9.9 24.7 22.3 19.9 17.5 15.1 29.8 27.4 25.0 22.6 20.2 34.9 32.5 30.1 27.7 25.3 40.0 37.6 35.2 32.8 30.4
outlet air temperature (°C) 12.5 16.0 19.5 23.0 26.5 15.7 19.2 22.7 26.2 29.7 18.9 22.4 25.9 29.4 32.9 22.1 25.6 29.1 32.6 36.1 25.2 28.7 32.2 36.7 39.2
water ow (m³/h) 0.7 0.6 0.5 0.4 0.2 0.9 0.8 0.7 0.6 0.5 1.1 1.0 0.9 0.8 0.7 1.4 1.2 1.1 1.0 0.9 1.6 1.5 1.4 1.3 1.2
pressure drop (kPa) 9.0 6.0 4.0 3.0 1.0 15.0 12.0 9.0 7.0 5.0 22.0 19.0 15.0 12.0 9.0 32.0 27.0 23.0 19.0 15.0 42.0 37.0 32.0 27.0 23.0
III max air ow - 4000 m³/h
heat output (kW) 18.2 16.0 13.8 11.7 9.4 22.8 20.7 18.5 16.3 14.1 27.5 25.3 23.1 20.9 18.8 32.1 29.9 27.7 25.5 23.4 36.6 34.5 32.3 30.1 27.9
outlet air temperature (°C) 13.3 16.7 20.1 23.5 26.8 16.8 20.2 23.6 27.0 30.3 20.3 23.7 27.0 30.4 33.8 23.7 27.1 30.5 33.8 37.2 27.1 30.5 33.9 37.3 40.6
water ow (m³/h) 0.6 0.5 0.4 0.3 0.2 0.8 0.7 0.6 0.5 0.4 1.0 0.9 0.8 0.7 0.6 1.2 1.1 1.0 0.9 0.8 1.4 1.3 1.2 1.1 1.0
pressure drop (kPa) 7.0 5.0 4.0 2.0 1.0 12.0 10.0 7.0 5.0 4.0 19.0 16.0 13.0 10.0 8.0 26.0 22.0 19.0 16.0 13.0 35.0 30.0 26.0 22.0 19.0
III max air ow - 2900 m³/h
heat output (kW) 15.9 14.1 12.3 10.5 8.7 19.8 18.0 16.2 14.4 12.6 23.6 21.8 20.0 18.2 16.4 27.4 25.6 23.8 22.0 20.2 31.2 29.4 27.6 25.8 24.0
outlet air temperature (°C) 15.0 18.1 21.3 24.4 27.5 18.9 22.1 25.2 28.4 31.5 22.9 26.0 29.2 32.3 25.5 26.8 29.9 33.1 36.2 39.4 30.7 33.8 37.0 40.1 43.3
water ow (m³/h) 0.5 0.4 0.4 0.3 0.2 0.7 0.6 0.5 0.4 0.4 0.8 0.8 0.7 0.6 0.5 1.0 0.9 0.9 0.7 0.7 1.2 1.1 1.0 1.0 0.9
pressure drop (kPa) 5.0 4.0 3.0 2.0 1.0 9.0 7.0 5.0 4.0 3.0 13.0 11.0 9.0 7.0 5.0 18.0 16.0 13.0 11.0 9.0 24.0 21.0 18.0 16.0 13.0
100E 150E 200E
inlet air temperature 0 5 10 15 20 0 5 10 15 20 0 5 10 15 20
heat output (kW) 7.0 7.0 7.0 7.0 7.0 11.0 11.0 11.0 11.0 11.0 14.0 14.0 14.0 14.0 14.0
outlet air temperature (°C) 12 17 22 27 32 13 18 23 28 33 14 19 24 29 34
Technical manual Ostro air curtain v201709
www.sonniger.com 3
3. HEAT OUTPUT RANGES
100-150-200 W Ostro Air curtains with water heater
100-150-200 E Ostro Air curtains with electric heater
J
Ostro E series (with electric heater) use a new type of PTC electric coils. It is a
modern and safe solution. The additional advantages of PTC heaters are:
Lack of voltage on surface of electric coil
Significantly lower coil temperature in comparison to old type of electric heaters
(e.g. heating wires, spirals)
Large heat exchange surface (surface of contact of the heat exchanger with
heated air)
Fully automatic heat control depending on air flow
Complete elimination of the risk of system overheating due to self regulating
heating modules (heat capacity automaticaly reduces when air flow goes down)
Low energy consumption

4 | SmithsEP.co.uk | Issue 001 - April 2020
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Technical manual Ostro air curtain v201709
4. GENERAL AND SAFETY PRINCIPLES
The air curtains are manufactured in compliance with the rules and standards concerning quality, ecology, utility and work
comfort. Before using the device please ensure that you read the instruction manual carefully.
The air curtains are delivered ready-to-use in a cardboard package that to protect from any mechanical damages. The package
consists of: the device, the Manual (Operation and Maintenance Documentation) and the Guarantee. If the optional automatic
control ordered, it will be delivered in a separate package. Make sure all the aforementioned elements are in the package
immediately after the delivery. In the absence of any element, please fill in the suitable carrier document.
NOTICE!
Do not use the curtain in rooms containing any flammable and/or combustible substances, biological substances or in
environments with corrosive air components.
Do not use the curtain in rooms with relative humidity above 80%
Do not leave the curtain ON unattended for long periods
Do not use the curtain unless it is properly earthed
Do not turn the curtain on without protective cover in place
Before conducting any maintenance or cleaning work or during abreak in operation for an extended period of time,
make sure the air curtain is completely disconnected from the electrical supply.
To connect the Ostro air curtain to the mains power supply use a secure connector such as a cable gland to ensure that
the power supply cannot be disconnected unintentionally
Please ensure a suitable RCD is used to protect the electrical circuit
Pay special attention while transporting the device not to damage the casing
When the device is being operated, ensure the safety rules in accordance with the labour standards relating to the
operation of any electrical devices
Do not place any objects on the curtain or reduce the airflow in order to ensure the fire safety and if sparks or a
damaged supply cable noticed, discontinue the operation immediately
Electricity network, to which the curtain is connected, should be protected against overloading and short circuit
CAUTION!
To avoid serious danger of electric shock, installation must be performed by a qualified electrician
To avoid the serious danger to electric shock disconnect the power supply prior to conducting any repair or
maintenance work
Any leakage repairs of the heating medium in the device, of which pipes are under pressure, is strictly prohibited
Cut-off/stop valve must be used to supply a heating medium
It is prohibited to connect grounding-type plug to water pipe, gas tubes, lightning conductors, telephone or
antenna network
Wait for at least 3 hours before connecting the device to the power supply if the temperature during transportation
is below zero
NOTICE !
Before mounting the device, read the manual carefully and adhere to the rules concerning the mounting
procedures. Non-adherence to the procedures may cause the device to malfunction and invalidate the product
warranty.
Pay special attention when working with electrical elements of the device.
www.sonniger.com 4
Technical manual Ostro air curtain v201709
4. GENERAL AND SAFETY PRINCIPLES
The air curtains are manufactured in compliance with the rules and standards concerning quality, ecology, utility and work
comfort. Before using the device please ensure that you read the instruction manual carefully.
The air curtains are delivered ready-to-use in a cardboard package that to protect from any mechanical damages. The package
consists of: the device, the Manual (Operation and Maintenance Documentation) and the Guarantee. If the optional automatic
control ordered, it will be delivered in a separate package. Make sure all the aforementioned elements are in the package
immediately after the delivery. In the absence of any element, please fill in the suitable carrier document.
NOTICE!
Do not use the curtain in rooms containing any flammable and/or combustible substances, biological substances or in
environments with corrosive air components.
Do not use the curtain in rooms with relative humidity above 80%
Do not leave the curtain ON unattended for long periods
Do not use the curtain unless it is properly earthed
Do not turn the curtain on without protective cover in place
Before conducting any maintenance or cleaning work or during abreak in operation for an extended period of time,
make sure the air curtain is completely disconnected from the electrical supply.
To connect the Ostro air curtain to the mains power supply use a secure connector such as a cable gland to ensure that
the power supply cannot be disconnected unintentionally
Please ensure a suitable RCD is used to protect the electrical circuit
Pay special attention while transporting the device not to damage the casing
When the device is being operated, ensure the safety rules in accordance with the labour standards relating to the
operation of any electrical devices
Do not place any objects on the curtain or reduce the airflow in order to ensure the fire safety and if sparks or a
damaged supply cable noticed, discontinue the operation immediately
Electricity network, to which the curtain is connected, should be protected against overloading and short circuit
CAUTION!
To avoid serious danger of electric shock, installation must be performed by a qualified electrician
To avoid the serious danger to electric shock disconnect the power supply prior to conducting any repair or
maintenance work
Any leakage repairs of the heating medium in the device, of which pipes are under pressure, is strictly prohibited
Cut-off/stop valve must be used to supply a heating medium
It is prohibited to connect grounding-type plug to water pipe, gas tubes, lightning conductors, telephone or
antenna network
Wait for at least 3 hours before connecting the device to the power supply if the temperature during transportation
is below zero
NOTICE !
Before mounting the device, read the manual carefully and adhere to the rules concerning the mounting
procedures. Non-adherence to the procedures may cause the device to malfunction and invalidate the product
warranty.
Pay special attention when working with electrical elements of the device.

Issue 002 - April 2020 | SmithsEP.co.uk | 5
Technical manual Ostro air curtain v201709
www.sonniger.com 5
5. INSTALLATION
When deciding on here to position the air curtain attention should be paid to:
Ease of access for servicing
Access to water and electricity connections
It is recommended to install the air curtain in position above the entrance opening, on the wall or under the ceiling, on support
pins or horizontal mounting brackets. It is also possible to mount it vertically to a wall or other structure using vertical mounting
brackets. It’s important to make sure that the unit is properly level. If the air curtain is not level, either horizontal or vertical, damage
to the fan may occur causing a malfunction.
Inlets and outlets cannot be blocked by any objects. When installing the curtains, ensure that access is clear to the control panel.
With larger door openings, it is possible to mount more curtains of the same type, one above the other, to create an
uninterrupted air flow. The curtain is permanently mounted in either a horizontal or vertical position (on the left/right side of
the entrance).
Connections to the air curtain should be accessible for servicing with manual shut-off valves on both the water connections for
complete isolation of the unit. If a solenoid valve is fitted (option - automatics), it must be connected to the water outlet of the device
or it may get damaged. When tightening the pie connections to the heat exchanger the connection care must be taken not to over
tighten otherwise damage may occur to the heat exchanger.
Horizontal installation under the ceiling using mounting pins
Installation under the ceiling is done by using 4 M8 pins. To hang the device on the pins, drill holes Ø 8-9mm in the EPP housing
directly in front of the existing holes in the steel inlet grille. The exact location is indicated by special tags on the EPP
housing. The pins should be screwed into the nippers at a depth of 10-14mm.
Drawing below shows the position of the mounting holes for the pins
Curtain size A(mm) C(mm) Nuber of pins M8
100
72
857
4
150
104
1295
4
200
157
1712
4

6 | SmithsEP.co.uk | Issue 001 - April 2020
Technical manual Ostro air curtain v201709
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It is important to note that the minimum distance between the device and the ceiling is not less than 150 mm. This will
ensure easy access to the water exchanger spigots, cable entries as well as free air flow to the inlet grille.
Curtain size C(mm) Number of brackets
100
857
2
150
1295
2
200
1712
2
Wall installation by means of horizontal brackets
The curtain can be mounted on the wall in a horizontal position using 2
mounting brackets to the horizontal system. In the brackets there are Ø9mm
holes for M8 screws. In the EPP housing, drill holes Ø 12-13mm in front of
existing holes in the steel intake grille. The exact location is indicated by the
special tags on the EPP housing and the figure below. Then insert the spacer
sleeves into the holes and fix the brackets. Screw the remaining screws into the
nuts under the steel intake grille so that both grips are in one plane. Locknuts
under the handles are used to secure the screws from unscrewing.

Issue 002 - April 2020 | SmithsEP.co.uk | 7
www.sonniger.com 7
Technical manual Ostro air curtain v201709
Installation using brackets for vertical mounting
It is also possible to install the unit vertically. Two vertical mounts are used for this purpose. In the brackets there are Ø9mm holes
for M8 screws. In the EPP housing, drill holes Ø12-13mm in front of existing holes in the steel intake grille. The exact location is
indicated by special tags on the EPP housing and the figure below. Then insert the spacer sleeves into the holes and fix the
brackets. Screw the remaining screws into the nuts under the steel intake grille so that both grips are in one plane. Locknuts under
the handles are used to secure the screws from unscrewing.
Curtain size C(mm)
100
857
150
1295
200
1712

8 | SmithsEP.co.uk | Issue 001 - April 2020
Technical manual Ostro air curtain v201709
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It is important to note that the minimum distance between the unit and the floor for installation with engine at the bottom is
not less than 100mm. This allows access to the electrical terminal strip and to the water exchanger vent.
Connection of heating medium
The connection of the heating medium to the heat curtain using G 1/2" threaded connections should be made on the basis of
a design by an authorized designer. If the air curtain is connected to a district heating network without a mixing unit, a water filter is
required.
In case of horizontal and vertical mounting with nozzles at the top, the exchanger is vented through the nozzles. If the device
is mounted vertically with nozzles at the bottom to vent the exchanger, use a vent which is located on the exchanger collector on
the engine side.
Connecting the power supply and control system of the curtain
To connect the power supply, control and/or bleed the Heat Exchangermove the right hand casing as per the diagram, which is
fastened with the lock to the lower steel housing and the main housing EPP. The lid is disassembled in the direction shown by the
arrows in the figure below. The lid should be grasped in the places indicated in the drawing and should be gradually "released"
from the locks for several millimetres. Cable entries for power and control cables are located on the inlet grille.
ATTENTION !
The air curtain must be level. When it is mounted in a position other than vertical
or horizontal there is a risk of fan damage and unit malfunction
ATTENTION !
Ensure that no connection wire is clamped between the lid and the rest of the
curtains before assembling the lid.
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Technical manual Ostro air curtain v201709
6. CONTROL PANEL
The curtain control is done by using the COMFORT control panel, which allows to adjust the flow and air temperature. The
control panel should be located outside the curtain airflow zone. Up to 2 air curtains can be connected to one COMFORT panel.
To install the control panel, unscrew the screw, remove the front cover and panel board, fix the panel to the wall, and replace the
panel and cover (installation instructions and fixing kit are included in the package).
7. DOOR SWITCH
The (DC) door switch is an additional element for switching the curtain on/off, depending on the opening of the door. It is designed
for indoor installation. It includes:
Relay cabinet - reed relay switchboard
Reed relay - Reinforcement for door-fitting, hermetic magnetic switch, consisting of a movable and
fixed element
Scheme of the relay cabinet – reed relay interface
Dimensions of reed relay Parameters of relay reed switchboard
When installing the door switch, remove the factory-made jumper:
NC-1 for air curtain W (curtain with a water heater) / C (curtain without a water heater)
NC-COM for air curtain E (curtain with an electric heater)
Power supply 230V/50Hz
Inductive load relay contact 5(A)
NC magnetic sensor circiut NC
IP66
Description of the COMFORT control panel switches
ON/OFF -switching on/off of the machine
I-II-III -fan gear switches, COMFORT terminal strip clamps
clamp 8 - high speed III
clamp 7 - middle speed II
clamp 6 - low speed I
HEAT -when the room temperature is lower than the set value, the thermostat switches on the fan (W, E, C),
the electric heater (E) and the valve actuator (W); When the set temperature is reached, the fan is switched off,
the valve closes the water flow or the electric heater switches off
FAN / COOL - not supported function, in these settings the device does not work

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6. CONTROL PANEL
The curtain control is done by using the COMFORT control panel, which allows to adjust the flow and air temperature. The
control panel should be located outside the curtain airflow zone. Up to 2 air curtains can be connected to one COMFORT panel.
To install the control panel, unscrew the screw, remove the front cover and panel board, fix the panel to the wall, and replace the
panel and cover (installation instructions and fixing kit are included in the package).
7. DOOR SWITCH
The (DC) door switch is an additional element for switching the curtain on/off, depending on the opening of the door. It is designed
for indoor installation. It includes:
Relay cabinet - reed relay switchboard
Reed relay - Reinforcement for door-fitting, hermetic magnetic switch, consisting of a movable and
fixed element
Scheme of the relay cabinet – reed relay interface
Dimensions of reed relay Parameters of relay reed switchboard
When installing the door switch, remove the factory-made jumper:
NC-1 for air curtain W (curtain with a water heater) / C (curtain without a water heater)
NC-COM for air curtain E (curtain with an electric heater)
Power supply 230V/50Hz
Inductive load relay contact 5(A)
NC magnetic sensor circiut NC
IP66
Description of the COMFORT control panel switches
ON/OFF -switching on/off of the machine
I-II-III -fan gear switches, COMFORT terminal strip clamps
clamp 8 - high speed III
clamp 7 - middle speed II
clamp 6 - low speed I
HEAT -when the room temperature is lower than the set value, the thermostat switches on the fan (W, E, C),
the electric heater (E) and the valve actuator (W); When the set temperature is reached, the fan is switched off,
the valve closes the water flow or the electric heater switches off
FAN / COOL - not supported function, in these settings the device does not work

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8. DIAGRAMS OF ELECTRICAL CONNECTIONS
The electrical network to which the air curtain will be connected should provide protection against overheating and short circuiting. It
is necessary to protect the air curtain by earthing. Electrical installation and connection to the air curtain must be in accordance with
applicable building codes and regulations, electrical connection should be carried out by a qualified person familiar with the above
instruction. The fan motor has standard internal thermal protection to protect the motor from overheating. The set does not include:
power cord, or main switch
8.1 Diagram of connecting one 100-150-200 W (water heater) and C (without heater) to one COMFORT panel
Power supply 230V / 50Hz; Security system B4; Cross section of power supply cables min. 3 x 1mm
Control Panel COMFORT - 3-speed fan control with thermostat, (OMY 5x 1.0mm)
Actuator valve - control 230V/50Hz (OMY 2 x 0.75mm - TS Lite),
8.2 Diagram of connecting two 100-150-200 W (water heater) and C (without heater) to one COMFORT panel
In the MASTER curtain between the L-NC terminals, replace the factory-made fuse (C 3.15) with C 6.3.
Power supply 230V/50Hz; protection of the C10 system; cross section of power supply cables min. 3 x 1.5 mm
COMFORT control panel - 3-speed fan control with thermostat (OMY 5x 1.0mm)
Actuator valve - control 230V / 50Hz (OMY 2 x 0.75mm - TS Lite),

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8.3 Diagram of connection of one 100-150-200 E Ostro curtain (electric heater) to the COMFORT panel
400V/50Hz power supply; wire cross section; current protection circuit
omin. 5 x 2,5 mm˛ for G100E ; (B16)
omin. 5 x 2,5 mm˛ for G150E; (B20)
omin. 5 x 4 mm˛ for G200E; (B25)
Control Panel COMFORT - 3-speed fan control with thermostat, (OMY 5x 1.0mm˛)
8.4 Diagram of connection of two 100-150-200 E Ostro curtain (electric heater) to one COMFORT panel
In the MASTER curtain between the L1-NC terminal, replace the factory-made fuse (C 3.15) with C 6.3
400V / 50Hz power supply; wire cross section; current protection of the system - should be selected according to the
parameters of the individual versions of the curtains
COMFORT control panel - 3-speed fan control with thermostat (OMY 5x 1.0mm˛)

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8.5 Diagram of connection of 100-150-200 E Ostro curtain in cold curtain mode (with electric heater switched
off)
In the summer time, it is possible to switch off the electric heater and use the air curtain E curtain as a cold curtain (i.e.,
fan only, electric heater does not work). In this case, a simple power cut-off installation (shown in the dashed diagram below) must
be made. The installation consist in inserting any on/off switch (labelled as "G") into the control circuit between terminal 3 on
Comfort Panel and Terminal 2 in the air curtain. The on/off switch itself should be installed in a place suitable for the curtain
user.
Warning! The Comfort Panel thermostat must be set to max. The on/off switch and the wires to the switch are not included in the
scope of delivery

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Connection of air curtains based on BMS communication module
The BMS module for Ostro air curtains allows to monitoring the operation of the curtain (EMERGENCY/FAILURE
signal) and switches the curtain on/off from the master BMS system.
With the use of digital signals 0/1 (potential free contact), the BMS module can work with any BMS master protocol
without need to convert the signal
8.6 Connection diagram of 100-150-200 W and C with BMS module
SIGNALS FROM BMS
PZ „READY FOR OPERATION”
Digital signal "1" from the master BMS (potential-free contact) - Curtain ready for operation
Digital signal "0" from the master BMS system (potential-free contact open) - Curtain disabled
SIGNALS TO BMS - MONITORING THE CURTAIN WORK (NOTE - ON/OFF switch on the COMFORT panel in ON position,
"READY FOR OPERATION” signal activated):
PP „OPERATION”
Digital signal "1" (potential-free contact closed) - information about the operation of the curtain - reed relay on - door
opened
Digital signal "0" (potential-free contact opened) -Reed relay off - door closed
If the contactor is not used - after the "OPERATION" signal is applied, the curtain operates continuously in the thermostat
mode - digital signal "1" (potential-free contact closed)
When the curtain is switched off via the thermostat - digital signal "0" (potential-free contact open)
PA „FAILURE”
With proper operation of the curtain - digital signal "0" (potential-free contact opened)
After triggering the fuse C3,15 - digital signal "1" - curtain failure (potential-free contact closed)

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8.7 Diagram of connection of 100-150-200 E Ostro curtain with BMS module
SIGNALS FROM BMS
PZ „READY FOR OPERATION”
Digital signal "1" from the master BMS (potential-free contact closed) - Curtain ready for operation
Digital signal "0" from the master BMS system (potential-free contact opened) - Curtain disabled
SIGNALS TO BMS - MONITORING THE CURTAIN WORK (NOTE - ON/OFF switch on the COMFORT panel in ON position,
"READY FOR OPERATION” 1 signal activated):
PP „OPERATION”
Digital signal "1" (potential-free contact closed) - information about the operation of the curtain- reed relay on -
door opened
Digital signal "0" (potential-free contact opened) - Reed relay off - door closed
If the contactor is not used - after the "WORKING" signal is applied, the curtain operates continuously in the thermostat
mode - digital signal "1" (potential-free contact closed)
When the curtain is switched off via the thermostat "0" digital signal (potential-free contact opened)
PA „FAILURE”
With proper operation of the curtain - digital signal "0" (potential-free contact opened)
After triggering the fuse C3,15 - digital signal "1" - curtain failure (potential-free contact closed)
ATTENTION!
While using BMS commuincation module for electric series remove factory installed jumper between COM-1

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9. DIMENSIONS OF THE 100-150-200 W, E, C OSTRO AIR CURTAINS

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10. OPERATION AND MAINTENANCE
The engine and fan of the air curtains are maintenance-free devices but regular check-ups are advised, especially motor and
bearing (fan’s rotor should rotate freely, free from any axial and radial throws/run-outs and undesired knocks/rattles.
The heat exchanger requires systematical cleaning to remove all dirt and impurities. It is advised that after a period of shut down of
the air curtain, prior to the start of the heating season, that the device should be cleaned with compressed air to remove debris
from the air outlets. There is no need to dismantle the air curtain to do this. It is also advised that the heat exchanger should be
cleaned but please be aware that the aluminium fins are delicate and can become easily damaged. If the fins are bent then a
special tool should be used to repair them.
The heat exchanger is not equipped with any fire protection device. The heat exchanger may be damaged if the room temperature
goes below 0°C; anti-freeze liquid must be added to the water circulation/system. Anti-freeze liquid must be appropriate for the
material the exchanger which is made of copper, as well as other elements of the hydraulic system/circulation. The liquid must be
diluted with water accordingly to the manufacturer’s recommendation.
11. TROUBLESHOOTING AND TECHNICAL PROBLEMS
Possible problems and solutions are shown below. To eliminate a problem encountered contact the Authorised Service.
Fault, symptoms Potential causes Solutions
No heating, fan not operating No power supply Check the power switch Check the
power supply Check the power cable -
if it is damaged - replace the cable
Damage to the fan Replace the motor
Damage to the switches on control
panel
Check the switches -if are damaged -
replace
Heating medium leakage
- leakage on joints with hot water
supply system
-leakage in collector
Loss of tightness Sealing supply system; repairing the
heat exchanger
Heat output drop Temperature of the heating medium
differs from the required one
Contaminated heat exchanger’s surface
Restore the temperature of the heating
medium
Clean the surface of the heat
exchanger
NOTICE !
Any and all repair and maintenance works must be conducted with the power off and the heat input
disconnected.
Only suitably qualified staff well acquainted with the safety regulations concerning handling with an electrical
device must be employed when the device is being installed, started and operated
In the event of coolant leak, when the water system is under pressure, any repairs of the leakage are strictly
prohibited.
Any repairs of the device must be conducted only if the device is disconnected from the power supply.
If the device being operated gives metallic clatter, vibration or the level of noise is increasing, check if the
mounting of the fan has not become loose – in case of any problems contact the installer of the device or
the Authorised Service immediately.

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Registering your product
Thank you for purchasing a Smith’s product. It has been designed and
manufactured to the highest quality standards to ensure it gives you
efcient and trouble-free service for many years. We are committed to
achieving the highest standards and our faith is supported by a free parts
and labour guarantee with every product.
For more information on the warranty period for this product
please visit our website smithsep.co.uk/product-registration/
This gives you the peace of mind that in the unlikely event of product
failure, we will repair or replace the product completely free of charge
providing the product has been installed, used and maintained in
accordance with the instructions. Your statutory rights are not affected by
this warranty.
It is important to register as soon as possible online at: smithsep.co.uk/
product-registration/.
This will ensure you will receive prompt and efcient service if your
product requires attention within the warranty period. If you do not
register your product, you will be required to produce proof of purchase
prior to receiving service.
For more details please visit our website: SmithsEP.co.uk
Disposal
As part of the policy of continuous product improvement, Smith’s
Environmental Products LTD reserves the right to alter specication
without prior notice.
Products with this symbol (crossed out wheelie bin) cannot be disposed as
household waste. Old electrical and electronic equipment must be recycled
at a facility capable of handling these products and their waste
by-products. If you are purchasing replacement equipment your retailer
may offer a ‘take back’ scheme, or will be able to give details of the
nearest approved authorised treatment facility. Proper recycling and waste
disposal will help conserve resources whilst preventing detrimental effects
on our health and the environment.
WEEE Registered Code: WEE/ED0093VW
Approved CQS ISO
9001:2015
After sales and spares
If you experience any problems with the use of your product, please
contact our after-sales ofce [phone].
For product information, customer services or sales support call us on
[phone]
For the Republic of Ireland, contact MT Agencies on 01 864 3363
Sales: [e-mail]
General information: [e-mail]
Smith’s Environmental Products Ltd
Blackall Industrial Estate, South Woodham Ferrers,
Chelmsford, Essex CM3 5UW
SmithsEP.co.uk
@SmithsEP_UK
#ThinkSmiths
Certificate No. EM2001002
ISO 14001
ISO 14001

18 | SmithsEP.co.uk | Issue 001 - April 2020
Notes

Issue 002 - April 2020 | SmithsEP.co.uk | 19
Notes

20 | SmithsEP.co.uk | Issue 001 - April 2020
Smith’s, providing comfort for the built environment
To view the full product information
download the datasheet at:
www.SmithsEP.co.uk
For product information, customer services or sales support
call us on [phone]
For the Republic of Ireland, contact MT Agencies on
01 864 3363
Sales: [e-mail]
General information: [e-mail]
Smith’s Environmental Products Ltd
Blackall Industrial Estate, South Woodham Ferrers,
Chelmsford, Essex CM3 5UW
SmithsEP.co.uk
@SmithsEP_UK
#ThinkSmiths
Issue 001 | April 2020
Happy to help
Smith’s Environmental Products Ltd is one of the leading
manufacturers of heating and cooling products in the UK.
We are committed to achieving the highest standards and
our faith is supported by a free parts and labour guarantee
with every product (see our website for more information).
Our customer service is second to none and we are happy
to offer any help and guidance that you might need.
Stockists
All products are available nationally from Builders’
Merchants, Plumbers’ Merchants, Heating Equipment
Distributors and Kitchen Equipment Distributors. In the
event of difculty, please contact us or visit our website
SmithsEP.co.uk for details of your nearest stockist.
Information and advice
Full technical specications and list prices is available to
download from our website or in hard copy from our ofce.
Also available on our website are price lists, individual
product data sheets, installation & user guides, where to
buy, who to contact and a media centre.
Alternatively contact our ofce 9.00am to 5.00pm Monday
to Friday.
As part our commitment to continuous improvement
Smith’s Environmental Products may change the
specifications of its products without prior notification
or public announcement. All descriptions, illustrations,
drawings and specifications in this publication present only
general particulars and shall not form part of any contract.
All dimensions are in mm unless otherwise stated.
Please visit the website for the most up to date information.