Air Curtains & Fan heaters.qxd - Systemair

Air curtains & Fan heaters 

www.systemair.com

2 

Contents 

Air Curtains 

Worth knowing about air curtains 

Portier Mini 7 

Portier Basic 8 

Portier Basic deluxe 10 

ScreenMaster AS 12 

ScreenMaster LG 13 

ScreenMaster LGW 14 

ScreenMaster HD 16 

ScreenMaster HDW 17 

MTV industrial 19 

Portier Grand 20 

Accessories 21 

Wiring diagrams air curtains 24 

Fan Heaters 

Worth knowing about fan heaters 28 

Proff portable fan heaters 29 

HeatMaster AVR 30 

Accessories 32 

Worth knowing about regulating fan heaters 33 

Heatmaster FHW 34 

Wiring diagrams stationary fan heaters 39 

Air curtains & Fan heaters, item number E8011. Systemair reserves the right to make technical changes without prior notice. 

Printed at Arkpressen, Västerås 2004.

Systemair – Europe´s leading air curtain manufacturer 

The products and distribution 

Systemair is today Europe's number one air curtain manufacturer 

producing more than 50 thousand air curtains a 

year. Systemair air curtains and fan heaters have been sold 

for a number of years under the well-known PYROX brand. 

These products are now incorporated in the Systemair’s 

extensive range of ventilation products and offered to customers 

all over the world. 

Our Systemair sales companies and local independent distributors 

have a wide experience and knowledge about the 

Systemair air curtains and fan heaters and are trained by 

us on the products and applications. 

Systemair AB 

The mother company Systemair AB was founded in 1974 

under the name Kanalfläkt, which means “duct fan” in 

Swedish. Fans and related accessories have been the 

company’s core business since the start. Today the 

Systemair Group consists of more than 30 subsidiary sales 

and production companies all over the world, with more 

than 1300 people employed. The group’s head office, main 

production facility and main warehouse is located in 

Skinnskatteberg, Sweden. We have extensive manufacturing 

space with highly automated production lines in our 

factories in Europe and North America. All products manufactured 

in our factories are developed and designed by 

oru own highly skilled engineers. Testing and measuring of 

the products are performed in our state-of-the-art laboratory 

in accordance with AMCA and ISO standards. 

The Straight Way 

Our first product concept, “the straight way”, gave birth to 

the circular duct fan, and today it expresses our ambition 

to make the logistics as smooth as possible for our customers. 

Our Systemair sales companies and distributors 

stock a wide range of Systemair products, which ensures 

fast reliable deliveries. 

We are proud of our high product quality, accurate technical 

data and prompt deliveries. Our product catalogues 

and electronic fan selection tools provide all the information 

needed for our customers. All catalogue pages and 

most other technical documentation and leaflets can be 

downloaded from our WEB site www.systemair.com. 

Quality and environment 

Systemair AB is certified in accordance with the quality 

assurance system ISO 9001 since 1993. Thanks to this 

system we are continuously improving our products and 

the service provided to our customers. Buying an air curtain 

from Systemair means bying one of the best engineered 

air curtians on the market. 

In 1996 Systemair AB became certified in accordance with 

the ISO 14001 environmental management system, thereby 

pledging to minimise our environmental impact. An important 

aspect of our environmental commitment is our continuous 

endeavour to reduce both our energy consumption 

and our waste. This management system has enabled us 

to reduce our waste volume by 90 % as a result of more 

recycling and greater awareness. 

3


4 


What is an air curtain? 

The principle of using a current of air as an invisible “curtain” 

between hot and cold zones in entrance areas originally 

comes from the USA where advanced duct systems 

are constructed using powerful blower fans in the ceiling 

and extraction grids in the floor. These systems are often 

expensive to install and operate. Systemair air curtains 

are therefore designed to give maximum efficiency to the 

minimum of costs in addition to simple installation. 

The energy loss through an open door depends on 

The pressure difference between outside and indoor 

The temperature difference between outside and indoor 

The wind forces on the door opening 

In premises where ventilation systems are installed, it is 

vital that the system is balanced (same amount of air 

taken out as put in) in order to reduce the pressure difference 

over the door openings. 

The warm and light indoor air and the cold and heavy 

outdoor air generate a pressure distribution as illustrated 

in figure 1b. The cold air flows in through the lower part 

of the door and presses the warm air out through the 

upper part. The overall airflow increases according to the 

temperature difference. When wind blows against the 

door, air flows into the building in a current that is equally 

large in the whole opening as illustrated in figure 1a. The 

total airflow through the door is the sum of these effects 

as illustrated in figure 1c. A correctly installed air curtain 

minimize these forces. 

How an air curtain works 

All air curtains have a fan that generates an intense airflow 

that blows across an open doorway. The kinetic 

energy in the moving air generates a barrier, like a waterfall, 

that prevents leakage of air between two rooms with 

different pressure and climate. Approx. 30 % of the airflow 

should be directed outwards into the open air. This 

“loss” is neccesary to prevent cold draught by the floor 

as illustrated in figure 1c. Air velocity by the floor should 

be approx. 2 m/s. Use a handkerchief to determine the 

split location as illustrated in figure 3. 

Savings and comfort 

Open doors stand for a considerable amount of the energy 

loss in a building. A correctly installed air curtain can 

reduce the heat loss through the door as much as 90 %. 

An air curtain prevents cold draught that allows shops to 

keep their doors open in winter time thus attracting more 

customers. In summer time all air curtains can be run 

without connecting the heating elements in order to keep 

hot air out. Systemair offers a series of models without 

heating elements especially made for this purpose. These 

units are often installed in connection with refrigerated 

rooms and reach-in dairy and florist cases. When 

installed in cooling or freezing rooms the air curtains 

should be put on the warmer side and tilted approx. 15° 

towards the warmer side. This is done to prevent the air 

curtain from blowing cold air, which can be felt like a 

draught, into the warm room and to keep the operating 

temperature for the electrical motor in the recommended 

temperature area. 

+ = 

a) b) c) 

Figure 1: Sum of airflows through an open door without air 

curtains. 

Figure 2: An air curtain generates a barrier between two 

climate zones. 

ca. 30 % ca. 2 m/s 

Figure 3: Approx. 30 % of the airflow should be directed 

outwards in order to prevent cold draugth by the floor.To 

find the airflow’s split location hold a handkerchief by the 

corner approximately 30 cm above the floor and move it 

gently back and forth in the doorway. The split location 

should be in the middle of the doorway or a little outside.


Selecting the right air curtain 

Choosing the appropriate air curtain is crucial for getting 

optimum efficiency and comfort. An air curtain with too little 

air velocity will not be able to supply the necessary 

power to prevent cold draught by the floor. Installing a too 

powerful air curtain at low door heights will feel uncomfortable 

for people standing beneath and will generate unnecessarily 

much noise. For best result it is important that the 

entire width of the door is covered by a continuous airflow. 

This is done by installing more air curtains side by side. 

Systemair air curtains are available with and without heating 

elements. Units without heat will stop the energy loss 

just as well as the units with heat, but can in some cases 

be considered to cause draught for people close to it. 

Adding heat reduces the draught feeling in addition to contributing 

to the total heating of the room and drying up 

entrance areas. How much heat is desirable to add, 

depends on whether the air curtain is the only heating 

source in the room, the temperature differences between 

the climate zones and the energy costs. From the diagram 

in figure 5 it is obvious that air curtains with hot water coils 

are capable of supplying a lot more heat than air curtains 

with electric heating elements. 

Technical specifications Systemair air curtians 

All Systemair air curtains are produced in the Systemair 

factory in Skinnskatteberg, Sweden. The factory was ISO 

9001 certified in 1993 and ISO 14001 certified in 1996. All 

air curtains are CE-marked, and are certified by SEMKO or 

NEMKO. 

All air curtains are equipped with an overheat thermostat 

both on the fan motor and for the electric heating elements 

(if present). All models (excl. PM) are equipped with external 

rotor motors from EBM or Ziehl-Abegg, the world’s 

leading manufacturers of this kind of motor. 

door height, m 

6.0 

5.5 

5.0 

4.5 

4.0 

3.5 

3.0 

2.5 

2.0 

1.5 

1.0 

0.5 

0.0 

PM 

LG, PB, AS 

The air curtains have a corrosion-proof casting in hot-dip 

galvanized, powder coated sheet steel. The color is white 

(RAL9016) with structure. The sound revised is presented 

as sound pressure level on 3m distance equivalent to 50m 2 

Sabine. 

Measuring the air flow from an air curtain 

There are two parameters that are of interest when measuring 

the performance of an air curtain - the volume flow 

(m 3 /s) and the velocity (m/s). One can also introduce the 

term momentum which is measured in kgm/s and determines 

the sluggishness of the air screen. Systemair has 

through 15 years of experience found what we think is the 

best combination between the two to give the optimum 

momentum. 

The air velocity is difficult to measure precisely, particularly 

outside the laboratory where not all surrounding influences 

can be controlled and limited. The flow pattern is also 

never perfectly homogeneous but varies along the length of 

the air screen having variations particularly close to the 

grille and at the ends where there is ingress of surrounding 

air. The volume flow can however be measured very precisely 

in Systemair's 750 000 Euro AMCA certified laboratory 

which is used to measure ventilation fans and 

advanced airhandling units. The outlet air velocity is therefore 

best derived from the volume flow and the outlet area 

using: 

v – air velocity [m/s] 

Q – volume flow [m 3 /s] 

A – flow area [m 2 ] 

recommended 

operating interval 

LGW 

HD 

HDW 

MTV 


5


Selecting an air curtain 

6 

HD12 

HD8 

LG12 

LG8 

LG943 

LG643 

LG343 

PBL14 

PB9 

PB6 

PB3 

PM5 

PM3 

PM2 

HDWL 

HDW 

LGWL 

LGW 

Fig. 4. Recommended operating heights for the various 

Systemair air curtain models. 

0 5 10 15 20 25 30 35 40 45 50 kW 

Fig. 5: Maximum heating power outputs for the various 

Systemair air curtain models. 

HOT WATER COIL ELECTRIC HEATING ELEMENTS

Portier Mini 

crossflow 

fan 

0.0 m 

0.5 m 

1.0 m 

1.5 m 

plug 

230 V 1~ 

PM 2/3/5 

3.8 m/s 

2.9 m/s 

1.9 m/s 

1.6 m/s 

PM2 PM3 PM5 

Length mm 806 806 806 

Heating power kW 2 3 4.5 

Voltage/phase V 230-1 230-1 230-1 

Current A 9.3 13.0 19.6 

Air flow m³/h 200/400 200/400 350/500 

Temperature increase °C 30/15 45/22 29/18 

Sound level dB(A) 38/48 36/48 39/50 

Weight kg 9.0 9.0 10.0 

Enclosure class IP21 IP21 IP21 

Item number 3207 3208 1041 

Air velocity profile Mounting 


• Air curtain for small openings and drive-by windows 

• Air inlet in front allowing mounting close to the ceiling 

• Intergated thermostat, no regulating equipment needed 

• Supplied with mounting brackets, cable and plug 

• Low noise crossflow fan 

Portier Mini is the smallest member of the Systemair air 

curtain range. Its smooth, curved and modern design 

makes it suitable for for small openings such as kiosk 

hatches and drive through windows. The 3 and 5 kW 

models give a considerable heat contribution, and is well 

suited as a substitute for a fan heater. 

Crossflow fans, motors, heating coils and regulation 

equipment are placed inside a curved frame of powder 

coated galvanized steel. The unit has two dials - thermostat 

and power selector with 5 positions: Off, ½ airflow- 

½ heat, ½ airflow-full heat (only PM2), full airflow-½ heat, 

full airflow - full heat. Thermostat settings from 0 to 40º 

C. The thermal protection switch is reset by removing the 

front panel and pressing the red button. 

The PM is mounted horizontally using the 

supplied mounting bracket. Minimum distances 

should be observed. The unit 

should not be mounted vertically. 

7


8 

Portier Basic 

crossflow 

fan 

• Looks good from both sides 

• Replaceable front panels for easy painting 


Portier Basic combines elegant modern design with 

Systemair well known quality. The distinct curved design 

reflects the trend found in modern architecture of today. 

Both front panels are curved and easily removable for 

simple service and painting. Additional front panels in 

black can be ordered. 

Portier Basic is recommended for door heights up to 2.5 

meters. 

Crossflow fan, electric heating elements and motor are 

placed inside a corrosion-proof casting in galvanized, 

powder coated sheet steel. Air inlet is from the top. The 

outlet is through an easily adjustable linear grille. 

A MP control panel controls the fan speed and heating 

elements. Optionally the MP can be connected to a thermostat 

like the SR12 to regulate the heating elements 

automatically. One MP can control up to four Portier air 

curtains. Fan speed and heating elements are individually 

regulated in three steps: 0 - ½ - full. 

PB0 PB3 PB643 PB943 

Length mm 1020 1020 1020 1020 

Heating power kW - 3 6 9 

Voltage/phase V 230~1 230-1/400 3N~ 400 3N~ 400 3N~ 

Current A 0.4 13.0 15.1/8.7 22.7/13.0 

Air flow low/high m³/h 950/1200 950/1200 950/1200 950/1200 

Temperature increase °C - 9/6 17/12 26/18 

Sound level dB(A) 47/49 47/49 47/49 47/49 

Weight kg 17 17 17 17 

Enclosure class IP44 IP21 IP21 IP21 

Item number 3955 2149 3322 3323 

Air Velocity Profile 

0 m 

0.5 m 

1 m 

1.5 m 

2 m 

2.5 m 

Accessories 

PB 

m/s 

9.0 

6.5 

4.9 

4.0 

3.5 

3.0 

MP p.21 SR12 p.21 PBT p.22 

PBL 

m/s 

7.5 

5.5 

4.3 

3.6 

3.2 

2.7 

PBH p.22 PBF p.23 PBS p.22 

Mounting 

The Portier is mounted horizontally using the M6 

mm threaded holes on top of the unit. It can be 

mounted in pendulums hanging from the ceiling or 

by using mounting brackets fastened to the wall. 

Mounting brackets must be ordered separately. The 

airflow direction can be adjusted by tilting the output 

lamellas. 

Units without electric heating elements may be 

mounted vertically.

Portier Basic 

PBL0 PBL943 PBL1443 

Length mm 1500 1500 1500 

Heating power kW - 9.0 13.5 

Voltage/phase V 230-1 400 3N~ 400 3N~ 

Current A 0.4 22.7/13.0 33.9/19.5 

Air flow low/high m³/h 1200/1900 1200/1900 1200/1900 

Temperature increase °C - 17/12 30/20 


Weight kg 24 24 24 


Item number 3956 3324 3325 

PBT can be used join more air curtains to make an air screen of any length 

The air curtain was painted brown not to 

stand out in the fashionable old style 

shop. 

– We have noticed less flies and wasps in 

our shop after installing the Portier air curtain, 

says Maria, Pascale cakery, Oslo. 


9


Portier Basic deluxe 

10 

crossflow 

fan 

• The designers’ air curtain 

Systemair knows that looks matters and is increasingly 

important in modern office lobbies and to shop owners. 

Portier Basic deluxe is possibly the most elegant massproduced 

air curtain on the market. It has simple clean 

lines and a cold elegant finish in brushed stainless steel, 

which is found to be popular among architects. The distinct 

curved design reflects the trend found in modern 

architecture of today and is meant to be a visible interior 

element symbolizing today’s energy conservation philosophy. 

The unit has no backside and is ideal for mounting 

in modern glass entry areas. 

Portier Basic deluxe is suited for door heights up to 2.5 

meters. Air inlet is from the top. The outlet is through an 

easily adjustable linear grille. 

The fan speed and heating elements are controlled by a 

MP control panel. Optionally the MP can be connected 

to a thermostat like the SR12 to regulate the heating elements. 

One MP can control up to four Portier air curtains. Fan 

speed and heating elements are independently regulated 

in three steps: 0 - ½ - full. Portier Basic deluxe can be 

rewired to run on 230V3~. 

PBD0 PBD3 PBD6 PBD9 

Length mm 1020 1020 1020 1020 

Heating power kW - 3 6 9 

Voltage/phase V 230~1 230-1/400 3N~ 400 3N~ 400 3N~ 

Current A 0.4 13.0 15.1/8.7 22.7/13.0 


Temperature increase °C - 9/6 17/12 26/18 


Weight kg 17 17 17 17 

Encöosure class IP44 IP21 IP21 IP21 

Item number 2163 2164 2140 2077 


0 m 

0.5 m 

1 m 

1.5 m 

2 m 

2.5 m 

Accessories 

PB 

m/s 

9.0 

6.5 

4.9 

4.0 

3.5 

3.0 

PBL 

m/s 

7.5 

5.5 

4.3 

3.6 

3.2 

2.7 

MP p.21 SR12 p.21 PBT p.22 PBH p.22 

PBS p.22 

Mounting 

The Portier is mounted horizontally using the M6 mm 

threaded holes on top of the unit. It can be mounted in 

pendulums hanging from the ceiling or by using mounting 

brackets fastened to the wall. Mounting brackets 

must be ordered separately. The airflow direction can 

be adjusted by tilting the output lamellas. 

Units without electric heating elements may be mounted 

vertically.

Portier Basic deluxe 

PBDL0 PBDL9 PBDL14 

Length mm 1500 1500 1500 

Heating power kW - 9 13.5 

Voltage/phase V 230-1 400 3N~ 400 3N~ 

Current A 0.4 22.7/13.0 33.9/19.5 

Air flow low/high m³/h 1200/1900 1200/1900 1200/1900 

Temperature increase °C - 17/12 30/20 


Weight kg 24 24 24 


Item number 2351 2085 2079 


Portier Basic deluxe will look nice also 

from the outside. The airflow can be 

directed using the adjustable outlet 

grille. 

11


ScreenMaster AS 

12 

crossflow 

fan 

AS90LV AS90HV AS120LV AS120HV 

Length mm 900 900 1200 1200 

Heating power kW - - - - 

Voltage/phase V 230~1 230~1 230~1 230~1 

Current A 0.40 0.50 0.45 0.55 

Air flow, low/high m³/h 625/820 700/1100 900/1350 1100/1700 

Sound level dB(A) 53 60 55 60 

Weight kg 8.7 10.8 11.4 13.0 


Item number 3203 3204 3205 3206 


0 m 

0.5 m 

1 m 

1.5 m 

2 m 

2.5 m 

Accessories 

ASCB p.23 

plug 

230 V 1~ 

refrigerated 

rooms 

AS90LV/120LV AS90HV/120HV 

8.5 m/s 

5.4 m/s 

3.7 m/s 

3.0 m/s 

2.5 m/s 

2.0 m/s 

10 m/s 

7.3 m/s 

5.4 m/s 

4.2 m/s 

3.4 m/s 

2.9 m/s 

• Plug&play air curtains without heating 

• Front air inlet allows mounting directly against the 

ceiling 

• Supplied with mounting brackets, cable and plug 


• No regulation equipment needed 

ScreenMaster AS is a simple-to-install full size air curtain 

without heating elements. It is specifically designed to 

prevent loss of cooled air and the entry of hot contaminated 

air for doors with heights up to 2.5 meters. It is 

suited for air-conditioned rooms as well as reach-in 

refrigeration displays and walk-in coolers/freezers. AS 

comes in two different lengths with two different motor 

sizes high (HV) and low (LV) velocity. 

Crossflow fan, motor and two-stage power switch (½ 

and full speed) is built into a corrosion-proof casting of 

powder coated, galvanized steel. The unit is supplied 

with a cord and grounded DIN-plug. 

AS mounted on the warmer side 

of a refrigerated room. 

Mounting 

AS air curtains are mounted above the inside of the 

door, as near to the top as possible. The unit can be 

angled for optimum efficiency, and can also be 

recessed in false ceilings. 

AS comes in two different lengths with two different 

motor sizes. Because of the front air intake the unit 

can be mounted where there is limited space 

between the top of the doorway and the ceiling. The 

units should not be mounted vertically.

ScreenMaster LG 

crossflow 

fan 

refrigerated 

rooms 

2.5 

3.1 m/s 


• Available in three length versions 

• Front air intake allows mounting directly against the 

ceiling 

• Low noise cross flow fan 

• Control panel may be installed into the air curtains or 

mounted separately on the wall 

• One set of regulating equipment can control up to 4 LG 

air curtains 

ScreenMaster LG is available in 12 different versions with 

different lengths and heating sources. The LG air curtain is 

recommended for door heights up to 2.5 meters. Crossflow 

fan, heating elements (excl. LG0) and external rotor 

motor are mounted in a corrosion-proof powder coated 

steel casing. Regulating equipment must be ordered separately. 

The control panel MP22 can be connected to a thermostat 

type SR12 to regulate the electric heating elements. 

For single air curtain installations a switch kit type MP-I 

can be installed inside the LG. ScreenMaster LG0 has no 

heating elements and is designed to keep warm air out of 

cold zones. LG0 is designed for use in reach-in refrigerated 

cases and in rooms with air conditioning. 

See page 16 for more details on LG regulating equipment. 

LG0 LG343 LG643 LG943 LG0L 

Length mm 985 985 985 985 1500 

Heating power kW - 3 6 9 - 

Voltage/phase V 230~1 400 3N~ 400 3N~ 400 3N~ 230~1 

Current A 0.4 4.7 8.3 13.4 0.6 

Air flow low/high m³/h 800/1250 800/1250 800/1250 800/1250 1100/2100 

Temperature increase °C - 11/7 22/14 34/21 - 

Sound level dB(A) 42/51 42/51 42/51 42/51 42/51 

Weight kg 16 18 18 20 24 

Enclosure class IP 44 IP21 IP21 IP21 IP44 

Item number 3027 3042 3043 3201 3028 

LG8 LG12 LG0XL LG9XL LG15XL 

Length mm 1500 1500 2000 2000 2000 

Heating power kW 8 12 - 9 15 

Voltage/phase V 400 3N~ 400 3N~ 230~1 230~3/400~3N 230~3/400~3N 

Current A 11.9 17.7 0.8 22.5/13.0 37.7/21.7 

Air flow low/high m³/h 1100/2100 1100/2100 1600/2500 1600/2500 1600/2500 

Temperature increase °C 22/11 33/17 - 11/7 16/12 

Sound level dB(A) 42/51 42/51 45/54 45/54 45/54 

Weight kg 28 28 28 31 35 

Enclosur class IP21 IP21 IP44 IP21 IP21 

Item number 3029 3032 3050 3048 3049 

Air velocity profile 

Mounting 

LG The LG air curtains are designed for hori- 

0 m 

7.5 m/s zontal, fixed installation. It should not be 

0.5 m 

6.6 m/s 

mounted closer than 50 mm from the top 

of the door. The low height of the unit and 

20 25 

15 30 

10 

35 

5 

40 

0 

1 m 

1.5 m 

5.1 m/s 

3.9 m/s 

the front inlet allow mounting close to the 

ceiling, it can also be recessed in false 

MP-I p.21 SR12 p.21 SR122 p.32 MP22 p.21 

2 m 

3.5 m/s 

ceilings. See figure on page 15 for minimum 

mounting distances. 

Accessories 

13


ScreenMaster LGW 

14 

LGW LGWL 

Length mm 985 1500 

Voltage/phase V 230~1 230~1 

Current A 0.5 0.6 

Airflow low/high m³/h 600/900 1000/1400 

Sound level dB(A) 42/51 44/53 

Weight kg 18 25 

Enclosure class IP44 IP44 

Item number 3031 3033 

Air velocity profile 

0 m 

0.5 m 

1 m 

1.5 m 

2 m 

2.5 

crossflow 

fan 

Accessories 

MP20 p.21 

hot water 

coil 

LGW 

5.6 m/s 

4.1 m/s 

3.0 m/s 

2.5 m/s 

2.1 m/s 

1.8 m/s 

SR12 p.21 MP0-I p.21 

20 25 

15 30 

10 

35 

5 

40 

0 

SR121p.32 

• Hot water coil for heating 

• Front air inlet allows mounting directly against the ceiling 

• Low noise cross flow fan 

• Control panel may be installed into the air curtains or 

mounted separately on the wall 

• One set of regulating equipment can control up to 4 LG 

air curtains 

ScreenMaster LGW is available in 2 different lengths recommended 

for door heights up to 2.2 meters 

Cross-flow fan and heating elements are mounted in a corrosion-proof 

casting of powder coated galvanized steel. 

The control panel MP20 can control up to 4 LGW. The 

water supply can be regulated by a thermovalve. 

LGW has a hot water coil for connection to a central heating 

system. The output power is determined by the temperature 

of the water and the temperature of the inlet air. 

(See table on next page for number values.) The LGW has 

a filter to protect the heating coil. Connection to the hot 

water source is done through DN 15 couplings located on 

top of the air curtain. Max water temperature is 100°C. 

∆P (kPa) 

30 

10 LGW 

5 

2 

A 

B 

LL 

C 

D 

C 

E 

Water connection 

A – Stopping valve 

(FHWSV20/25) 

B – Adjustment valve 

(FHWAV20/25 

C – Regulating valve 2-way 

(FHW2RV20/25) 

D – Actuator 

(FHWACT) 

0 0.10 1,0 Q (l/s) 

Pressure drop in water coil given a volume flow 

LGWL L 

LGWXL L WXL

ScreenMaster LGW 

Mounting in false ceilings. Make sure the supply of inlet air 

is sufficient to prevent overheating. To ensure enough inlet 

air a ceiling grille may be installed. The distance between 

the grille and the nozzle of the air curtain (I) is irrelevant. 

Connection to a hot water source is done through 

DN15 couplings located on the top of the air curtain. 

The direction of the water flow is irrelevant. 

LGWL output power and temperature increase of air 

Fan pos. 95/70 80/60 70/50 60/40 55/35 

t i °C ∆t i °C QkW ∆t i °C QkW ∆t i °C QkW ∆t i °C QkW ∆t i °C QkW 

0 

+10 

+15 

+20 

LGW output power and temperature increase of air 



0 

+10 

+15 

+20 

1 43.1 8.8 35.6 7.4 30.7 6.2 25.0 5.1 22.1 4.5 

2 36.4 11.1 30.1 9.7 25.8 7.9 20.5 6.6 18.0 5.8 

1 37.6 7.7 31.0 6.3 25.2 5.1 19.4 3.9 16.5 3.4 

2 21.7 9.7 25.5 8.2 21.1 6.4 15.9 15.1 13.4 4.3 

1 34.8 7.1 28.3 5.7 22.4 4.6 16.7 3.4 13.7 2.8 

2 29.3 8.9 23.2 7.5 18.8 5.7 13.7 4.4 11.1 3.6 

1 32.1 6.5 25.5 5.2 19.6 4.0 13.9 2.8 10.9 2.2 

2 27.0 8.2 20.9 6.7 16.4 5.0 11.2 3.6 8.7 2.8 

Fan pos. 1 = 600 m³/h 


ti °C = Temperature inlet air 

∆ti °C = Temperature increase throughflowing air 

Q = Output power 

1 45.0 15.2 38.0 12.9 32.1 10.9 26.0 8.9 23.0 7.9 

2 39.3 18.7 33.0 15.7 28.1 13.3 23.0 10.8 20.0 9.6 

1 39.3 13.3 32.4 11.0 26.5 9.0 20.6 7.0 17.6 7.2 

2 34.4 16.3 28.0 13.4 23.1 10.9 18.0 8.5 15.0 7.2 

1 36.5 12.4 29.5 10.0 23.7 8.0 17.8 6.0 14.8 5.0 

2 31.7 15.1 25.8 12.2 20.6 9.8 15.4 7.3 12.8 6.0 

1 33.6 11.4 26.7 9.0 20.8 7.0 14.9 5.0 11.8 4.0 

2 29.4 13.9 23.3 11.0 18.1 8.6 12.9 6.1 10.2 4.8 







A 

A = min 50 mm 

Minimum distance for mounting 

Mounting the air curtain 

into false ceilings 

requires no extra accessories 

except a standard 

egg crate grille. Observe 

that the minimum distances 

to the walls and 

ceiling must be maintained. 

15

Air curtains 

ScreenMaster HD 

16 

vertical 

mounting 

Length mm 1000 1000 1700 1700 

Heating power kW - 8 - 12 

Voltage/phase V 230~1 400~3N 230~1 400~3N 

Current A 1.6 11.9 2.4 17.7 


Temperature increase °C - 27/13 - 27/13 


Weight kg 39 44 57 64 


Item number 3053 3060 3057 3170 


Mounting 

Horizontally 

HD / HDL 

The HD is mounted above the inside of the door, as near the top of it as possible. 

The whole width of the door opening should be covered. The unit can 

be angled for optimum efficiency and can be recessed into false ceilings. 

0.5 m 

10.0 m/s Using the supplied mounting brackets ensures enough room for the inlet air 

supply, see figure on page 18. 

1.5 m 

2.5 m 

3.5 m 

centrifugal 

fan 

Accessories 

refrigerated 

rooms 

6.9 m/s 

5.0 m/s 

4.1 m/s 

• High pressure centrifugal fans 

• Can be mounted vertically 

• Can easily be connected to a door switch 

ScreenMaster HD is a powerful air curtain with or without 

electrical heating. It may be mounted vertically beside or 

hung over the doorway. HD is recommendend for door 

heights 2.5 - 3.5 meters such as shopping malls and airports 

where the door height is higher than normal. 

The unit is equipped with 2 or 3 centrifugal fans. Fans and 

heating elements (if present) are mounted in a corrosionproof 

galavanized, powder coated sheet steel casting. 

Regulating equipment must be ordered separately. The 

speed regulator for the fan, HDR4, can control up to 14 

motors. The electric heating elements are controlled by a 

power selector HDEV. A door switch, HDGL, can be connected 

to a HDR4 (on/off) or a HDR42 (high/low) to regulate 

the air curtain depending on if the door is open or 

closed. HDEV can be connected to a thermostat like the 

SR122. See page 18 for more details on HD-regulating 

equipment. 

HD0 HD8 HD0L HD12 

Vertically 

For vertical mounting a special mounting bracket, HDS, must be ordered. One 

HDS is needed for each HD that is mounted vertically. Due to the total weight 

on the bottom HD, the total installation should not exceed three units. The HD 

should be mounted as close to the opening as possible, in the door’s full 

height. For best result the airflow should be broken by a wall/frame on the 

opposite side of the door, see figure on page 18. 

20 25 

15 30 

10 

35 

5 

40 

0 

HDR4 p.21 HDEV p.21 HDGL p.21 HDS p.22 HDR42 p.22 SR12 p.21 SR122 p.32

ScreenMaster HDW 

vertical 

mounting 


0.5 m 

1.5 m 

2.5 m 

3.5 m 

centrifugal 

fan 

HDW / HDWL 

9.3 m/s 

6.4 m/s 

4.7 m/s 

3.8 m/s 


• Hot water coil for heating 

• High pressure centrifugal fans 

• Can easily be connected to a door switch 

ScreenMaster HDW is a powerful air curtain with hot water 

heating coil. It may be mounted vertically beside or hung 

over the doorway. HD is recommendend for door heights 

2.2 - 3 meters 

HDW is equipped with 2 or 3 centrifugal fans mounted in a 

corrosion-proof galvanized, powder coated sheet steel 

casting. The output power is determined by the temperature 

of the water and the temperature of the inlet air. (See 

table on page 14 for number values.) The HDW has a filter 

to protect the heating coil. Connection to the hot water 

source by DN 20 couplings located on top of the air curtain 

(on the right hand side). Observe that water inlet is See 

system illustration on page 14 for water connection. Max 

water temperature is 100°C. 

Regulating equipment must be ordered separately. The 

speed regulator for the fan, HDR4, can control up to 14 

motors. Alternatively a HDR42 can be installed to have the 

air curtain run at different speeds depending on if the door 

is open or closed. See page 18 for more details on HDregulating 

equipment. 

HDW HDWV HDWL HDWVL 

Length mm 1000 1000 1670 1670 


Current A 1.6 1.6 2.4 2.4 



Weight kg 51 51 74 74 


Item number 3055 3209 3169 3210 

Accessories 

hot water 

coil 

HDR4 p.21 HDGL p.21 HDS p.22 HDR42 p.22 

Mounting 

Horizontally 

The HDW is mounted above the 

inside of the door, as near the top of 

it as possible. The whole width of 

the door opening should be covered. 

The unit can be angled for 

optimum efficiency and can be 

recessed in false ceilings. Using the 

supplied mounting brackets ensures 

enough room for the inlet air supply, 

see figure on page 18. 

Vertically 

For vertical mounting HDWV or 

HDWVL which have special water 

coils approved for vertical installations 

must be ordered. The batteries 

have two airing nipples so that the 

air curtain can be mounted vertically 

both watys. Also a special mounting 

bracket, HDS, is recommended for 

simple installation. One HDS is 

needed for each HD that is mounted 

vertically. (The total hight of the 

installation should not exceed three 

units.) 

The HD should be mounted as 

close to the opening as possible, in 

the door’s full height. For best result 

the airflow should be broken by a 

wall/frame on the opposite side of 

the door, see figure on page 18. 

17

ScreenMaster HDW 

18 

∆P (kPa) 

30 

10 

5 

2 

HDW - Pressure drop water battery 

HDWV DWV 

HD may be 

installed vertically 

0 0.10 1,0 Q (l/s) 

HDW 

HDWVL DWVL 

Pressure drop in water coil given a volume flow 

HDWL HDWL 

HDW output power and temperature increase of air 



0 

1 

4 

67.7 

54.0 

18.4 

31.3 

56.7 

45.1 

15.4 

26.0 

48.7 

38.7 

13.2 

22.3 

39.8 

31.2 

10.8 

18.0 

35.5 

27.7 

9.6 

16.0 

+10 

1 

4 

59.5 

47.3 

16.1 

27.3 

48.5 

38.4 

13.2 

22.1 

40.5 

31.9 

11.0 

18.4 

31.5 

24.5 

8.5 

14.1 

27.2 

21.0 

7.4 

12.1 

+15 

1 

4 

55.4 

43.9 

15.0 

25.3 

44.4 

35.1 

12.0 

20.2 

36.3 

28.5 

9.9 

16.5 

27.3 

21.1 

7.4 

12.2 

22.9 

17.6 

6.2 

10.1 

+20 

1 

4 

51.3 

40.5 

13.9 

23.4 

40.3 

31.7 

10.9 

18.3 

32.2 

25.1 

8.7 

14.5 

23.1 

17.7 

6.3 

10.2 

18.6 

14.1 

5.0 

8.1 






HDWL output power and temperature increase of air 



0 

1 

4 

71.1 

59.7 

28.9 

49.1 

61.9 

48.9 

22.0 

41.4 

51.3 

41.6 

20.9 

35.2 

43.9 

34.2 

15.6 

28.9 

39.3 

30.4 

14.0 

25.8 

+10 

1 

4 

62.6 

50.8 

25.5 

43.0 

53.2 

41.8 

18.9 

35.4 

42.7 

34.4 

17.4 

29.2 

35.0 

27.0 

12.5 

22.8 

30.0 

23.2 

10.8 

19.7 

+15 

1 

4 

58.3 

47.2 

23.7 

40.0 

48.8 

38.2 

17.3 

32.4 

38.4 

30.8 

15.6 

26.1 

30.5 

23.3 

10.9 

19.8 

25.8 

19.5 

9.1 

16.5 

+20 

1 

4 

54.0 

43.6 

22.0 

37.0 

44.4 

34.6 

16.9 

29.4 

34.0 

27.2 

13.9 

23.0 

26.0 

19.6 

9.2 

16.7 

21.1 

15.8 

7.5 

13.4 






490 

580 

min 300 


Using the supplied mounting brackets ensures sufficient 

inlet air. 

A wall should stop the airflow when air curtains are 

mounted vertically to avo tallation seen from above) 

One HDS must be 

ordered for each vertically 

mounted HD

MTV industrial 

vertical 

mounting 


MTV41 MTV61 

Length mm 1040 1560 

Voltage/phase V 230~1 230~1 

Current A 1.4 2.1 

Airflow m³/h 5700 8500 

Sound level dB(A) max 60 max 62 

Weight kg 60 90 



Accessories 

axial fan refrigerated 

rooms 

REU p.23 HDGL p.21 STET-10 p.23 

Mounting 

The MTV should be mounted as 

close to the opening as possible 

using the supplied brackets. If 

mounted vertically, a stopping 

wall/board mounted on the opposite 

side is recommended in order to 

stop the air flow and prevent 

draught into the room. See figure on 

page 18. 

A motor protection that needs to be 

reset manually can be connected for 

safety. Installations without this 

device will start automatically after 

the motor has cooled off. 


• For industrial premises. 

• High efficiency axial fans 

• Cost effective - high energy savings 

MTV industrial air curtain is Systemair’s most powerful air 

curtain. The 3 motor version gives 8500 m3/h, which is 

enough air to set up an air screen for the highest gates in 

warehouses and factory shipping halls. It can be mounted 

either besides or over the gateway. No extra accessories 

are needed for vertical mounting. MTV is recommended for 

door heights 3.5-6 meters. 

MTV has no heating elements. Still it will have a warming 

effect as it circulates the warm air that accumulates under 

the ceiling. High doors cause the biggest energy loss and 

hence the biggest potential for savings using an air curtain. 

Axial fans and motors are placed inside a corrosion-proof 

casting in hot-dip galvanized, powder coated sheet steel. It 

is supplied with two lamellas to direct the airflow. Air inlet 

is from the top. 

The fan speed is controlled by a transformer regulator such 

as the Systemair REU. The air curtain can be made to run 

at one speed when the door is open and an other speed 

when the door is closed by connecting the REU to a door 

switch like the HDGL. 

19


Portier Grand 

Accessories 

MP34 

Item:1140 

20 

445 

vertical 

mounting 

HW 

crossflow 

fan 

375 

MP30 

Item:1130 

410 

85 

134 

SR12 p.21 

1020 / 1560 

Based on the popular design of Portier Basic the new 

Portier Grand is a fresh addition to the Systemair range 

of designer's air curtains. It is intended for lobby areas 

with entry doors up to 3.5 meters and can be both vertically 

and horizontally mounted. 

It comes in two lengths and is available both with electric 

heating elements or hot water coil. The fan speed is controlled 

in 3 steps using the external MP32 (or MP30 for 

ambient or hot water units) that can easily be connected 

to a door switch. 

The non-plastic, robust construction is made of corrosion 

proof powder coated steel. It has a quiet cross flow 

fan and an easily adjustable outlet grille. 

The side panels can easily be removed for simple installation 

and maintenance. Side panels in brushed stainless 

steel are available as accessories. 

PG0 PG9 PGL0 PGL14 

Length mm 1020 1020 1560 1560 

Heating power kW 0 9 0 13.5 

Voltage/phase V 230~1 400 3N~ 230~1 400 3N~ 

Current A 1.6 14.6 1.9 22.2 

Air flow low/high m³/h 2400 2400 3200 3200 

Temperature increase °C - 11 - 18 

Sound level dB(A) not yet available 

Weight kg 30 32 40 43 

Enclosure class IP 44 IP44 IP44 IP44 

Item number 4637 4641 4639 4643 

PGW PGLW PGWV PGLWV 

Length mm 1020 1560 1020 1560 

Heating power kW see table *) see table *) see table *) see table*) 


Current A 1.3 1.9 1.3 1.9 

Air flow low/high m³/h 1900 2300 1900 2300 

Preliminary data 

Temperature increase °C see table *) see table *) see table *) see table *) 

Sound level dB(A) not yet available 

Weight kg 34 47 34 47 


Item number 4645 4647 4632 4634 

PBH p.22 PBS p.22 HDGL p.21 

*) See HDW table on page 17 for approx. values

MP – control box 

SR 12 – electronic thermostat 

Regulation equipment 

MP is the control box for LG and Portier air curtains. One MP can control up to 4 air curtains. It comes in four 

versions: MP22, MP20, MP-I and MP0-I. 

MP22 is used for air curtains with electric heating elements. It has two switches - one for regulating the fan 

speed and one for regulating the electric heating power. MP0 is used for air curtains without electric heating 

elements or with hot water coil and has one switch only to control the fan speed. 

MP-I and MP0-I are switches for internal mounting in the LG air curtains. 

Fan speed control (0 - ½ - full) 

Heating control (0 - ½ - full) 

Max Power 250 V, 10 A 

Enclosure class IP 44 (MP20, MP22) 

Item numbers MP20/1201, MP22/1188, MP0-I/8202, MP-I/8203 

SR12 is a two step electronic thermostat with internal setting. It can be connected to the MP or HDEV control 

panels to regulate the power output of electrically heated LG, Portier or HD air curtains. For industrial and rough 

areas SR122 (IP54) is recommended. See page 32 for details. 

Temperature range 0-40° C 

Sensitivity, DT 1.5° C 

Max. Power 10/16A, 230/400V 

Enclosure class IP 44 

Item number 1120 

HDR4 – speed regulator 

HDR4 is a cam-operated switch with 5 positions. It is to be used as a speed regulator for all HD air curtains. One 

HDR4 can control up to 14 fan motors. The regular HD models have two electrical fan motors while the long versions 

(HD0L ect.) have three. Each motor needs 0.2 kW and runs on 230 V single phase voltage. 

Positions 0 - 1 - 2 - 3 - 4 

Max. Power 20A, 3kW (230V 1~) 

Enclosure class IP65 

Dimension 80 x 100 x 90 


HDEV – power regulator 

HDGL – door switch 

HDEV is a cam-operated switch with 3 positions. It is to be used as a power selector for HD air curtains with electrical 

heating elements. 

The HDEV is connected to contactors in the HD which uses 0.25 A control current. The upper limit of units to be 

controlled is limited rather by the HDR4 than the HDEV. 

Positions 0 - 1 - 2 

Max. Power 20A 




HDGL is an adjustable-length roller lever with two positions. One circuit is connected in neutral position; the other 

circuit is connected when the lever arm is moved 41° degrees to either side. HDGL is suitable for use together 

with REU or HDR42. Connection 13-14 is active when lever is in position1. Between 30° and 41° no connection is 

active. 

Encasing is made of black/grey plastic. The length of the lever can be adjusted. 

Max Power 230 VAC, 4 A 

Protection class IP67 

Dimensions [mm] 30 x 85 x 50 (encasting) 

110 x 17 x 90, ø50 (tilting arm) 


Position 2 

(21-22) 

Position 2 

(21-22) 

41 0 

30 0 

Position 1 

(13-14) 

-30 0 

-41 0 

21


HDS – bracket for vertical mounting 

PBT – joining kit 

22 

HDS is used for vertical installations of the HD or HDWV air curtains. The set consist of two plates that fit into 

each other like a shoebox and are held together by bolts. The bottom part is bolted to the floor while the other is 

fastened to the end plate of the air curtain. The HDS enables the "tower" of air curtains to be turned to direct the 

airflow. One HDS must be ordered for each HD. See figure on page 18. 

Dimension [mm] 410 x 380 x 50 

Weight kg 6.1 


PBT joins more Portier Basic air curtains together in order to make an air curtain of any length. The PBT consist of 

a plastic plate and a metal bracket. 


PBS – wall mounting set 

PBH is a wall mounting set suited for all Portier Basic air curtains. The two black brackets are mounted onto the 

top of the air curtain and can easily be hung onto the T-shaped bracket fastened to the wall. The T-shaped brackets 

have a track so that the air curtain can be slid in and out for adjusting purposes. 


HDR42 – speed regulator 

PBH – pendulum set 

Speed controller used together with all HD air curtains enabling the option for two different fan speeds depending 

on if the door is open or closed. The HDGL door switch controls which of the two dials on the HDR42 is active. To 

have the air curtain stop when the door is closed one of the dials is set to 0. 

Positions 0 - 1 - 2 - 3 - 4 (x 2) 

Max. Power 20A 




Pendulum set for all Portier Basic air curtains. The rods fit into each other and the length can 

easily be adjusted by moving the screws. For short installations the rods can be cut. The set 

includes some plastic frames that will cover the cables that can be threaded inside the rods. 

Item number 10697

ASCB – ceiling brackets 


Ceiling brackets used for hanging the AS from the ceiling instead of using the supplied wall brackets. The brackets 

have two holes on top for fastening a wire or rod. (Not supplied). 

Item number 6972 (set of two) 

REU – manual five-step transformer 

A single-phase transformer which controls the fan speed by altering the supply voltage in five fixed steps. The 

steps are adjusted manually, using the control knob on the front of the unit. There are two control switches: one 

for higher fan speeds and one for lower fan speeds. Switching between the high and low settings is done by an 

external change-over contact, like the HDGL door switch. The indicator lamp on the front shows when the transformer 

is in operation. The fuse may be reset from outside. The REU has a self-extinguishing thermoplastic casing. 

Supply voltage: 230V 50/60Hz. 

NOTE! Fans with external thermal contact leads (TK) must always be connected to a motor protection device. 

Enclosure class: IP54 

Dimensions [mm] 150 x 275 x 145 

REU3 REU5 REU7 

Fuse [A] 3.5 6.0 8.0 

Weight [kg] 3.2 4.8 7.7 

Item number 5005 5006 5007 

STET-10 – thermal contact motor protection 

PBF – front panel 

The STET 10BE switches off the supply voltage to the motor when the thermal contact in the motor windings is 

tripped. The motor protector is connected to the power supply (from the REU) and also to the thermal contact in 

the motor. The motor protector is reset by pressing the black button as soon as the motor windings have cooled 

sufficiently. The STET has a built-in potential-free contact for an external signal to indicate when the contact relay 

has been tripped. 

STET 10 BE STET 10B 

Voltage [V] 0-230 0-230 

Current min/max [A] 0.4/10 0.4/10 

Weight [kg] 0.3 0.5 

Dimensions [mm] 63 x 80 x 76 63 x 80 x 76 



Front panels for Portier Basic air curtains in powder coated steel. Sold one and one, not in pairs. 

Name Item Length [mm] 

PBFB Front panel PB Black 4200 1020 

PBLFB Black front PBL 4201 1500 

PBFS Front panel PB Stainless 10693 1020 

PBLFS Front panel PBL Stainless 10694 1500 

Front panel PB unpainted 102894 1020 

Front panel PBL unpainted 102910 1500 

23

Wiring Diagrams Air Curtains 

Screenmaster LG 

LG - MP22 

24 

LG3 

LG6 

LG9 

LG8 

LG12 

LG-MP22-SR12 

LG-MP-I 

M 

~ 

°C 

°C 

Black 

Brown 

Blue 

6 µF 

3(4) µF 

K1 K2 

400V3~ 

N P L L L 

1 2 3 

LG12 

1 2 3 4 5 6 7 8 9 10 11 

LG3 

LG6 

LG9 

LG8 

LG12 

M 

~ 

°C 

°C 

Black 

Brown 

Blue 

6 µF 

3(4) µF 

K1 K2 

LG3 

LG6 

LG9 

LG8 

LG12 

1 2 3 4 5 6 7 8 9 10 11 

N 

N P L L L 

1 2 3 

LG12 

400V3~ 

LG3 

LG6 

LG9 

LG8 

LG12 

MP-I 

M 

~ 

°C 

°C 

Black 

Brown 

Blue 

6 µF 

3(4) µF 

K1 K2 

N P L L L 

1 2 3 

1 2 3 4 5 6 7 8 9 10 11 

MP 22 

0 

N 

LG12 

400V3~ 

1 1 2 3 4 4 5 7 7 8 9 10 101111 

M 

~ 

°C 

°C 

Black 

Brown 

Blue 

6 µF 

3(4) µF 

K1 K2 

1 2 3 4 5 6 7 8 9 10 11 

N 

21 22 23 24 25 26 27 28 

N P L L L 

1 2 3 

LG12 

400V3~ 

MP 22 

0 

1 1 2 3 4 4 5 7 7 8 9 10 10 11 11 

SR 12 

HI LO 

1 1 2 3 4 

°C 

5 6 7 

L L N

Portier Basic 

PB-MP22-SR12 

N L 

L1L2L3 

MP 22 

1 2 4 5 6 8 9 11 

°C 

C2 

PB 

C1 3 µF 

C2 6 µF 

N 400V3~ 

0 

1 1 2 3 4 4 5 7 7 8 9 10 101111 

N L L1L2L3 

1 2 4 5 6 8 9 11 

400V3~ 

N L L1L2L3 

1 2 4 5 6 8 9 11 

K1 

K2 

C1 

Blue 

Brown 

Black 

°C M ~ 

PB 3 

N L 

kW 

L1L2L3 

1 2 4 5 6 8 9 11 

°C 

C2 

PB PBL 

K1 

C1 3 µF 4 µF 

C2 6 µF 6 µF 

K2 

C1 

Blue 

Brown 

Black 

°C M ~ 

PB6, 

PBL9 


SR 12 

1 1 

HI LO 

2 3 4 

°C 

5 6 7 

PB3 PB6 PBL9 PB9 PBL14 

N L 

kW 

L1L2L3 

kW 

L L N 

PB, PBL 

PB, PBL 

1 2 4 5 6 8 9 11 

°C 

C2 

K1 

PB PBL 

C1 3 µF 4 µF 

C2 6 µF 6 µF 

K2 

C1 

Blue 

Brown 

Black 

°C M ~ 

PB9, 

PBL14 

25


ScreenMaster HD 

HD HDGL HDR4 HDEV SR122 

26 

HD8, HD12 400V 3(N)~ / 230V3~ 

P N 1 2 3 4 5 6 7 8 9 

HD8, HD12 400V 3(N)~ / 230V3~ 

P N 1 2 3 4 5 6 7 8 9 

L 1 N (L2) 

230 V~ 

HD HDGL HDR42 HDEV SR12 

HD 

HD 

HDGL 

X X 

X X 

X 

X X X X 

1 2 3 4 

HDGL 

2 6 8 

1 3 5 7 

HDR4 

P N 1 2 3 4 5 6 7 

L 1 N (L2) 

230 V~ 

4 5 6 

31 32 33 34 35 36 37 38 

4 

3 

2 

1 

0 

X 

X X 

X 

X 

X 

X 

X 

X 

1 3 5 7 

10 12 13 14 

10 12 13 14 

10 11 12 13 14 

10 11 12 13 14 

L1 L2 L3 

L1 L2 L3 

5 1 

6 2 

HDEV 

400V3~/230V3~ 

400V3~/230V3~ 

X X 

X 

O 6 2 

HDR42 

6 

5 

4 

Step 2 

SR122 

400V 3~/230V 3~ 

Step 1 

Diff (1-4)K 

5 1 

6 2 

HDEV 

L1 L2 L3 

400V 3~/230V 3~ 

SR 12 

L1 L2 L3 

3 

2 

1 

HI LO 

1 1 2 3 4 

°C 

5 6 7 

L L N 

L1 N 

230 V~

ScreenMaster HD/MTV 

HD HDR4 HDEV 

HD8, HD12 400V 3(N)~ / 230V3~ 

P N 1 2 3 4 5 6 7 8 9 

L1 N (L2) 

230 V~ 

MTV REU STET HDGL 

HD8, HD12 400V 3(N)~ / 230V3~ 

P N 1 2 3 4 5 6 7 8 9 

MTV 

2 6 8 

1 3 5 7 

HDR4 

M M M 

~ ~ ~ 

U1U2 

U1U2 

U1U2 

U1U2 

L1 N 

230V~ 

1 2 3 4 5 

1 

4 

3 

2 

1 

0 

TK 

X 

STET -10 

2 

3 

REU 

X X 

X 

X 

X 

X 

X 

X 

1 3 5 7 


10 11 12 13 14 

10 11 12 13 14 

5 1 

6 2 

HDEV 

MTV MTV 

M M M 

~ ~ ~ 

U1U2 

HDGL 

2 3 4 5 

1 U1U2 

X X 

X 

0 6 2 

M M M 

~ ~ ~ 

M ~ 

1 2 3 4 5 

0.135 kW 

L1 L2 L3 

400V 3~/230V 3~ 

L1 L2 L3 

400V 3~/230V 3~ 

27

Fan Heaters 

Worth knowing about fan heaters 

Fan heaters can achieve high heat output and quick 

response for a low cost. Compared with other methods 

of heating, fan heaters have the lowest price per installed 

kW and are therefore well suited for applications with not 

permanent operation. Stationary fan heaters are often 

installed in industrial premises and warehouses. They 

can also be installed to supplement other methods of 

heating for particularly cold days. The large portable 

models are popular for construction sites and for drying 

applications. 

The high efficiency of fan heaters is due to their heat 

transfer coefficient (hc ). Having a high value means that 

energy can be rapidly transferred (W/m2K). The heat 

transfer coefficient between the heating coil and the air 

being forced past it (forced convection) is 3-8 times 

greater than if the air was at rest (natural convection) [1]. 

This means that for a given efficiency the surface area 

for the heating elements can be reduced to 1/8 of that of 

a conventional electric radiator. In addition, the fan 

heater provides circulation of the heated air. 

The stationary fan heaters AVR are regulated by a switch 

or a thermostat. For premises where fan heaters are 

installed separately from the ventilation system the air 

will circulate through the appliance until desired temperature 

is reached. The temperature increase 20-50°C for 

each cycle. Fan heaters should not be used in rooms 

with ambient temperatures over 30°C. 

Fan heaters are best suited for rooms with relatively low 

ceiling heights (less than 5 metres) as the hot air rises 

above the living space. For applications with high ceilings, 

ceiling fans should be installed to mix the air in 

28 

Proff 3-15 

SVA 3-15 

AVR 6-15 

Proff 20-30 

AVR 20-30 

order to achieve an even temperature throughout the 

room. 

Systemair fan heaters have a relatively large fan compared 

to the heating power. This is because warm air is 

easier to distribute in the room than hot air – a basic 

knowledge from ventilaion A larger fan also generated 

less sound and has a longer lifetime as it can run more 

slowly. 

When fan heaters are installed it is important to distribute 

them evenly in the room. Best performance is achieved 

when using many, well distributed appliances. It is possible 

to regulate a number of fan heaters with a single 

thermostatic control. 

Stationary fan heaters can be fitted with a mixing unit for 

the intake of outdoor air or the mixing outdoor and 

indoor air. This is a simple way of supplying the room 

with pre-heated fresh air. The mixing unit is also available 

with a simple, inexpensive automatic control, which 

opens and closes the air damper at preset times, and 

depending on the internal temperature. 

The sound pressure in dB(A) given for each fan has been 

measured at a distance of 4m in a 400m 2 room in 

accordance with ISO 3741. 

Further information about heating and ventilation, including 

illustrating examples, can be found in “Pyrox Heating 

and Ventilation Tutorial”, 1998. Visit our website or contact 

your local Systemair sales agent for a free copy. 

_______ 

[1] - Mills, A.F. “Heat and Mass Transfer” Richard D. Irwin, INC., 1995 

Los Angeles 

2/3 kkW 

5kW 

9kW 

115kW 

1 5 10 15 20 [m] 

The throwing lengths indicate where the air velocity is reduced to 0.25 m/s.

Proff 

Type 

Dimensions 

A B C 

PRO2/3/5 285 340 405 

PRO9 345 410 490 

PRO15 415 500 525 

PRO20/30 630 568 594 

Portable Fan Heaters 

• Robust and compact design 

• Can be used for fixed mounting on the wall 

• Low noise level and high air flow 

Proff is a range of compact, portable fan heaters designed 

for craftsmen and others who need both temporary and 

permanent heating for buildings sites, warehouses, workshops 

etc. It is particularly well suited for drying applications. 

The heaters have a handle and can easily be mounted 

onto the wall. Proff fan heaters must not be used in the 

proximity of swimming pools or other places where there is 

open water. 

The units are made of galvanised steel with heating elements 

of stainless steel. Powder coated in light grey with 

a black stand and grill. Proff 2kW and 3kW are supplied 

with a 2m supply lead and a DIN grounded plug. The Proff 

5kW and 9kW are also supplied with 2m lead but with a 

CEE round-pin plug for 3 phase power supply. The Proff 

15kW, 20kW and 30kW are supplied with a 1.8m cable 

without plug. settings. 

The thermostat can be set between 5°C and 40°C. 

Proff fan heaters are fitted with thermal trips to prevent 

overheating. The trip is reset by pressing the button on top 

of the PRO2-15, or under the top cover for PRO20-30. 

PRO221 PRO321 PRO343 PRO543 

Heating power kW 2 3 3 5 

Voltage/phase V 230~1 230~1 400 3N~ 400 3N~ 

Current A 8.8 13.2 4.3 7.2 

Temperature increase °C 21 32 32 31 

Air flow m³/h 280 280 280 480 

Sound level dB(A) 35 37 37 37 

Weight kg 5.7 6.0 6.0 6.7 


Item number 3092 3093 3094 3096 

PRO943 PRO1543 PRO2043 PRO3043 


Voltage/phase V 400 3N~ 400 3N~ 400 3N~ 400 3N~ 

Current A 13.0 21.9 29.5 43.9 

Temperature increase °C 37 43 21/23 47/36 

Air flow m³/h 720 1050 1900/2600 1900/2600 

Sound level dB(A) 48 52 66/74 66/74 

Weight kg 10.2 16.1 29.3 30.3 


Item number 3098 3100 3127 3129 

A 

B 

C 

Operation 

The appliance is equipped with a power /fan speed selector switch and a 

thermostat. The Proff 2kW-15kW models have a single fan speed and two 

heat settings. The Proff 20kW-30kW models will run at low speed at the 

lowest heat setting and at high speed for the two highest heat settings. 

For the 2kW-9kW models the fan motor can be set so that it operates in 

conjunction with the thermostat and heat. In this way, the fan will not run 

unnecessarily and blow cold air. The instructions for setting the heater for 

this mode of operation are located under the top cover. 

29

Stationary Fan Heaters 

HeatMaster AVR 

30 

• Robust and compact design 

• Easy mounting and installation 

• Wide range of accessories 

The AVR is a fan heater for fixed installation. It is suitable 

for heating storage rooms, workshops and general industrial 

premises, shopping centres and sports halls. 

The axial fan and heating elements are mounted in a light 

grey powder-coated sheet steel frame. The heating elements 

are made of stainless steel. 

The smaller models have their controls located on the bottom 

to avoid over heating. The AVR20 and AVR30 have 

their control panels on the top but are fitted with a fan 

over-run thermostat to exhaust heat when the appliance is 

switched off. 

The appliances are normally supplied for 380-415V mains 

connection. The AVR15 can be specially ordered for 440V - 

500V supplies. 

The fan, motor and heating elements have integral thermal 

protection. The heat will be disconnected if any one of 

these activates. The fan will stop and the green signal lamp 

will light up. The unit can be restarted after the reset button 

under the top cover has been pressed. 

AVR6 AVR9 AVR12 AVR15 


Voltage / phase V 400 3N~ 400 3N~ 400 3N~ 400 3N~ 

Current A 9.0 13.3 17.7 22.0 

Air flow m³/h 930/1280 930/1280 930/1280 930/1280 

Temperature increase °C 19/14 29/21 39/28 48/35 


Weight kg 17.6 17.6 17.6 17.6 


Item number 3145 3146 3147 3148 

AVR1553 AVR2043 AVR3043 

Heating power kW 15 20 30 

Voltage / phase V 440/500/3~ 400 3N~ 400 3N~ 

Current A ~ 29.5 43.9 

Air flow m³/h 930/1280 1900/2600 1900/2600 

Temperature increase °C 48/35 31/23 47/34 


Weight kg 17.6 30.3 31.6 


Item number 3149 3160 3162 

Accessories 

AB 615 p.32 FL103 

Item:8992 

20 25 

15 30 

10 

35 

5 

40 

0 

SR12 p.21 SR121/ 

124 p.32 

MU p.32 SM220SR 

p.32 

FD p.33 ATD4M p.32 MR p.33 AB2030 p.32

HeatMaster AVR Accessories 

AVR6-15 

The AVR can be mounted either using the wall brackets 

supplied or to an air mixing unit, MU. A minimum distance 

of 0.2m must be maintained between the heater and any 

combustible surface. A minimum distance of 0.5m must be 

maintained in front of the appliance. Ambient temperature 

should not exceed 30°C. 

The appliance can not be connected to a duct or be ceiling 

mounted. 

All AVRs have a switch for selecting the heating output in 

three steps. AVR6-15 can regulate the fan speed in three 

steps while models AVR20-30 regulate it in two. A remote 

SM220SR, 

Damper Motor 

MU, Mixing Unit 

MR630, 

Manual Regulator 


AVR20-30 

control, AB, can be connected to control one or more units 

from a distance. See wiring diagrams on page 14 and 15. A 

maximum of 10 AVR6-15 or AVR20-30 can be connected 

to one AB control panel, though it is recommended to split 

the heaters into smaller groups that are more easily controlled. 

Optionally the AVR can be connected to a thermostat to 

regulate the heating elements according to the room temperature. 

If the AVR is using an AB control panel, the thermostat 

is connected to this instead. See page 32 for SR 

thermostats and other useful accessories. 

31


MU615 and MU2030 – mixing unit 

SM220SR – damper actuator 

ATD-4 – control panel 

AB615 and AB2030 – control panel 

32 

MU is an air mixing unit package containing exterior grille, inlet sleeve, inner frame and mixing cabinet. The cabinet 

has a damper to allow any mixture of fresh inlet air and ambient indoor air. It is controlled either manually 

using a MR630 or automatically using a SM220SR and ATDS4M. The ambient air is supplied through a grill in the 

bottom of the cabinet. 

When using a mixing unit the AVR is fastened directly onto the cabinet without using the supplied mounting 

bracket for the AVR. 

Dimension MU615 (hwd) 385 x 375 x 470 Cut out (hw) 375 x 365 

MU2030 (hwd) 830 x 460 x 420 Cut out (hw) 500 x 465 

Item number MU615/8049, MU2030/8050 

SM220 is a 220V modulating damper actuator for use together with ATDS4M and MU air mixing units. 

When the button on the unit is pressed and held, the gear is set out of function and the damper can be operated 

by hand. 


ATD-4 is a an electronic temperature regulator for accurate controlling of one or more AVR fan heaters. The heating 

power is regulated automatically in 3-steps. 

The unit has a timer for programming temperatures both on a daily and weekly basis. Day and night time temperatures 

are set independently of each other. The ATD also has a switch for manual operation which sets the timer out 

of control. A temperature sensor such as FL103 must be ordered separately. A built-in switch in the ATD starts and 

stops the fan heaters. 

ATDS-4 has the same features as the ATD-4 but is also supplied with an output signal for controlling a motor powered 

damper for the mixing cabinet. During night time the damper is closed and the unit is recycling the indoor air. 

Item number ATD4M/8055, ATDS4M/8056 

AB615 and AB2030 are remote controllers for AVR6-15 and AVR20-30 respectively. The controller is merely an 

extension of the switches found on the appliances and allows easy access to units mounted for instance high up 

on a wall. 

One AB615 or AB2030 can control up to 10 AVR heaters, however it is recommended to control less by putting the 

heaters into groups that are more easily controlled independently. 

Item number AB615/8047, AB2030/8048 

SR121, 122 and SR124 – thermostat 

SR is a capillary tube thermostat with external control knob. It is well suited for connection to the AB615 and 

AB2030 control panels to regulate AVR fan heaters. SR121 is an on/off thermostat while the SR122 and 124 have 2 

and 4 steps respectivly. 

Temperature range 0-40°C 

Sensitivity, DT 1.5°C 

Max. power 10/16A, 230/400V 



Item number SR121/8070, SR122/8073, SR124/8071

P 

Regulation of electrical fan heaters 

°C 

25 

24 

1 

0 

On/off thermostat with 1° switching differential. 

Power on when P=1 

°C 

25.0 

24.5 

P 1 

0 

On/off thermostat with 0.5° switching differential 

P3 

P2 

P1 

°C 

25 

24 

23 

22 

1 

0 

1 

0 

1 

0 

Step thermostat with 1° switching differential 

FD 

MR630 

Time 

Time 

Time 


Control of room temperature is achieved by a sensor 

which monitors the temperature and sends a signal to 

the control. The control then decides whether or not 

power is to be supplied to the heating elements. In general 

this can be done in one of two ways: 

On/off regulation (or multi-stage regulation) 

Triac type regulation 

The ‘switching differential of the control system dictates 

the type of response to changing conditions. A thermostat 

that switches on at 22°C and off at 23°C has a 1° 

switching differential. See figure 4a and 4b. The smaller 

the differential, the more stable the room temperature. 

When regulating heaters with contactors, a differential 

that is too small will cause rapid switching which in turn 

can cause intrusive noise and wear of the contactors. 

On/off regulators are the cheapest and simplest way of 

maintaining a stable room temperature. Systemair fan 

heaters use capillary thermostats which exploit the principle 

of fluid expansion with rising temperature to regulate 

the heat output. In most cases this type of regulation 

will offer an adequate response for space heating control. 

Multi-stage thermostats 

With high-output electrical space heating, simple on/off 

thermostatic control is not an ideal solution. Having the 

load divided into two or more stages, allows staged 

switching of the power to meet the heating demand. The 

simplest way to achieve this type of control is through 

use of a three stage thermostat. (Figure 5). If the temperature 

drops below the set temperature, contact 1 switches 

on 1/3 of the power (see P1 in figure 7) If the temperature 

continues to drop contact 2 switches on an additional 

1/3 of the power (P2). If the temperature drops further, 

the remaining 1/3 of the power is switched on (P3). 

In this way a more stable room temperature can be 

achieved, and electrical load fluctuations are reduced. 

FD is an airflow director for AVR heaters. It is easliy mounted onto the outlet grille of the AVR. There are two sizes 

FD615 fits of AVR6/AVR15, FD2030 fits AVR20/AVR30. 

Item number FD615/8053, FD2030/8054 

MR630 is a manual regulator for damper in MU615 and MU2030 air mixing units. See picture page 31. 


33


HeatMaster FHW 

34 

• Compact and modern design 

• Easy maintenance 

• Wide range of accessories 

FHW is a series of fan heaters with hot water coil, 

designed for heating of premises such as production halls, 

warehouses, shops, shopping centres and meeting halls 

where low sound level is of particular interest. 

The air is passed through the hot water coil in such a way 

that the sound level can be as low as 35 dB[A] (for FHW 

12). The fan heater consists of an axial fan with integrated 

motor and water coil, mounted in a corrosion-proof hotdip 

galvanised sheet steel casing. All models have individually 

adjustable linear grilles to lead the air flow in the 

desired direction.The fan heater can be mounted on the 

wall or the ceiling and the water connection can be on 

either the left or the right hand side. The air stream can be 

regulated in multiple steps.The heating can be combined 

with ventilation by using a mixing unit for outside air or 

inside re-circulation. In addition there are several other 

accessories available. 

For extended information see special FHW catalogue 

(E8006). 

(Can also be downloaded from wwwww.systemair.com.) 

FHW12 FHW22 FHW32 FHW33 

Heating output kW 12/17 23/30 28/50 36/65 


Current A 1.0 1.4 2.8 2.8 

Water volume inside coil L 1.9 3.2 4.8 6.5 

Air flow m³/h 1080/2340 1800/4070 2430/6190 2260/5710 


Weight kg 25 30 40 45 


Item number 2496 2497 2498 2499 

Type A B C D E F G H I Ø 

FHW12 580 525 65 340 470 60 60 60 80 18 

FHW22 725 680 40 370 620 60 60 60 80 22 

FHW32/33 855 820 80 450 725 70 85 60 125 28 

(measurements in mm) 

H 

I 

G

Product overwiew 

Type Description Item number 

FHWMC1 Mixing cabinet FHW12 10780 

FHWMC2 Mixing cabinet FHW22 10781 

FHWMC3 Mixing cabinet FHW32/33 10782 

FHWD1 Distance for filter FHW12 10783 

FHWD2 Distance for filter FHW22 10784 

FHWD3 Distance for filter FHW32/33 10785 

FHWF1 Filter section FHW12 10786 

FHWF2 Filter section FHW22 10787 

FHWF3 Filter section FHW32/33 10788 

FHWFN1 Filter net FHW12 10789 

FHWFN2 Filter net FHW22 10790 

FHWFN3 Filter net FHW32/33 10791 

FHWC1 Console for FHW12 10792 

FHWC2 Console for FHW22 10793 

FHWC3 Console for FHW32/33 10794 

FHWAD1 Air director FHW12 10795 

FHWAD2 Air director FHW22 10796 

FHWAD3 Air director FHW32/33 10797 

FHWWG1 Outer wall grille FHW12 10800 

FHWWG2 Outer wall grille FHW22 10801 

FHWWG3 Outer wall grille FHW32/33 10802 

AF230 Damper actuator with spring on/off 9300 

STET10B Motor protection 5154 

FHWEF1 Extra filter 1 EU3 10890 




Air flow and temperature regulation 

Type Description Item number 

FHWR3 3-step fan regulator 10798 

FHWR3A 3-step fan regulator automatic 10799 

RE3 Transformer 5001 

RE7 Transformer 5003 

Termostats and electronic time switch 

Type Description 

RT 0-30 Room thermostat 5151 

REX2000 Time switch 5149 

SR121 Thermostat 1-step IP55 8070 

SR122 Thermostat 2-step IP55 8072 

Water regulation 

Type Description 

FHWACT Actuator 20/25 10803 

FHW2RV20 2-way DN20 regulation valve 10804 

FHW2RV25 2-way DN25 regulation valve 10805 

FHWAV20 Adjustment valve DN20 10806 

FHWAV25 Adjustment valve DN25 10807 

FHWSV20 Stop valve DN20 10808 

FHWSV25 Stop valve DN25 10809 

FHWR3A FHWAV 

FHW2RV FHWACT FHWSV 

35


FHW Output charts 

Incoming/outgoing water temperature 90/70°C 

Incoming air temp. = -15°C Incoming air temp. = 0°C Incoming air temp. = +15°C 

Type Fan Air Output Outgoing Water- Output Outgoing Water- Output Outgoing Waterpos. 

flow air temp. flow air temp. flow air temp. flow 

[m3 /s] [kW] [°C] [l/s] [kW] [°C] [l/s] [kW] [°C] [l/s] 

FHW12 Max 0.65 26.5 18.4 0.31 20.8 26.3 0.24 15.1 34.1 0.18 

3 0.51 23.0 21.9 0.27 18.1 29.0 0.21 13.2 36.2 0.15 

2 0.42 20.4 24.8 0.24 16.1 31.4 0.19 11.8 37.9 0.14 

1 0.30 16.5 30.1 0.19 13.1 35.6 0.15 9.60 41.1 0.11 

FHW22 Max 1.13 47.2 19.2 0.56 37.2 27.0 0.44 27.2 34.7 0.32 

3 0.91 41.5 22.4 0.49 32.8 29.5 0.39 24.0 36.6 0.28 

2 0.64 33.4 27.8 0.39 26.5 33.9 0.31 19.4 39.9 0.23 

1 0.50 28.5 31.8 0.34 22.6 37.1 0.27 16.7 42.3 0.19 

FHW32 5 1.72 69.2 18.0 1.82 54.4 25.9 0.65 39.6 33.9 0.47 

4 1.44 62.4 20.5 0.74 49.1 27.9 0.58 35.8 35.4 0.42 

3 1.03 51.0 25.5 0.60 40.2 32.0 0.47 29.4 38.4 0.35 

2 0.67 38.7 32.4 0.46 30.7 37.5 0.36 22.5 45.5 0.26 

FHW33 5 1.59 89.2 31.0 1.06 70.7 36.4 0.84 52.2 41.9 0.62 

4 1.30 78.2 34.3 1.93 62.1 39.1 0.74 45.9 43.9 0.54 

3 0.88 59.8 40.7 0.71 47.6 44.4 0.56 35.4 48.0 0.42 

2 0.63 47.0 46.1 0.56 37.5 48.8 0.44 28.0 51.4 0.33 


36 





FHW12 Max 0.65 30.5 23.4 0.36 24.8 31.3 0.29 19.1 39.1 0.22 

3 0.51 26.4 27.4 0.31 21.5 34.5 0.25 16.6 41.7 0.19 

2 0.42 23.4 30.7 0.27 19.1 37.3 0.22 14.8 43.8 0.17 

1 0.30 18.9 36.7 0.22 15.5 42.2 0.18 12.0 47.8 0.14 

FHW22 Max 1.13 54.2 24.3 0.64 44.2 32.0 0.52 34.2 39.8 0.40 

3 0.91 47.6 27.8 0.56 38.9 35.0 0.46 30.1 42.1 0.35 

2 0.64 38.3 34.0 0.45 31.3 40.1 0.37 24.3 46.1 0.29 

1 0.50 32.6 38.5 0.43 26.7 43.8 0.31 20.8 49.1 0.24 

FHW32 5 1.72 79.6 22.9 0.95 64.8 30.9 0.77 50.0 38.8 0.59 

4 1.44 71.1 25.8 0.85 58.4 33.2 0.69 45.1 40.6 0.53 

3 1.03 58.5 29.2 0.69 47.7 37.9 0.56 36.9 44.4 0.44 

2 0.67 44.4 31.5 0.52 36.3 44.4 0.43 28.2 49.5 0.33 

FHW33 5 1.59 102.0 37.5 1.21 83.5 43.0 0.99 65.0 48.5 0.77 

4 1.30 89.2 41.2 1.06 73.2 46.1 0.87 57.1 51.0 0.68 

3 0.88 68.2 48.5 0.81 56.0 52.2 0.66 43.8 55.8 0.52 

2 0.63 53.4 54.5 0.63 44.0 57.2 0.52 34.6 59.9 0.41

FHW Output charts 








FHW12 Max 0.65 22.5 13.4 0.26 16.8 21.2 0.20 11.1 29.0 0.13 

3 0.51 19.5 16.4 0.23 14.6 23.5 0.17 9.7 30.6 0.11 

2 0.42 17.4 18.9 0.20 13.0 25.5 0.15 8.7 32.0 0.10 

1 0.30 14.1 23.5 0.16 10.6 29.0 0.12 7.1 34.4 0.08 

FHW22 Max 1.13 40.2 14.2 0.48 30.2 21.9 0.36 20.2 29.6 0.24 

3 0.91 35.4 16.9 0.42 26.7 24.0 0.31 17.8 31.0 0.21 

2 0.64 28.6 21.6 0.34 21.6 27.6 0.25 14.5 33.6 0.17 

1 0.50 24.4 25.0 0.29 18.5 30.3 0.22 12.5 35.5 0.14 

FHW32 5 1.72 58.8 13.0 0.70 44.0 21.0 0.52 29.1 28.9 0.34 

4 1.44 53.1 15.2 0.63 39.8 22.6 0.47 26.4 30.0 0.31 

3 1.03 43.4 19.5 0.51 32.6 26.0 0.38 21.8 32.2 0.26 

2 0.67 33.1 25.5 0.40 25.0 30.6 0.29 16.8 35.5 0.20 

FHW33 5 1.59 76.4 24.4 0.91 57.9 29.8 0.69 39.2 35.2 0.46 

4 1.30 67.0 27.2 0.79 50.9 32.1 0.60 34.5 36.8 0.40 

3 0.88 51.4 32.9 0.61 39.2 36.5 0.46 26.8 40.0 0.32 

2 0.63 40.5 37.6 0.48 31.0 40.3 0.36 21.4 42.8 0.25 





FHW12 Max 0.65 19.4 9.5 0.15 13.7 17.2 0.10 7.8 24.8 0.06 

3 0.51 16.9 12.2 0.13 12.0 19.2 0.09 6.9 26.1 0.05 

2 0.42 15.1 14.5 0.12 10.7 20.9 0.08 6.2 27.1 0.04 

1 0.30 12.3 18.7 0.09 8.8 21.1 0.07 5.2 29.1 0.04 

FHW22 Max 1.13 35.1 10.4 0.27 24.9 18.1 0.19 14.5 25.5 0.11 

3 0.91 31.0 12.9 0.24 22.1 19.9 0.17 12.9 26.7 0.10 

2 0.64 25.2 17.2 0.20 18.1 23.1 0.14 10.7 28.7 0.08 

1 0.50 21.6 20.4 0.17 15.6 25.5 0.12 9.3 30.2 0.07 

FHW32 5 1.72 50.8 9.2 0.40 35.8 17.1 0.28 24.5 24.8 0.16 

4 1.44 45.9 11.1 0.36 32.5 18.5 0.25 18.7 25.6 0.14 

3 1.03 37.8 15.1 0.30 26.9 21.4 0.21 15.6 27.4 0.12 

2 0.67 29.1 20.6 0.23 20.9 25.5 0.16 12.3 30.0 0.09 

FHW33 5 1.59 67.8 19.9 0.53 48.9 25.2 0.38 29.3 30.1 0.23 

4 1.30 59.7 22.6 0.47 43.2 27.2 0.34 26.1 31.4 0.20 

3 0.88 46.2 28.0 0.36 33.7 31.4 0.26 20.6 34.2 0.16 

2 0.63 36.7 32.7 0.29 26.9 35.0 0.21 16.7 36.7 0.13 

37


FHW pressure drop water 

Water pressure drop over FHW water coil 

70 

∆P [kPa] 

10 

38 

0.1 1.0 10 Q [m3/h] 

FHW12 

FHW22 

1 

0.01 

0.01 0.1 1.0 Q [l/s] 

Water pressure drop over regulation and valves 

70 

∆P [kPa] 

10 

0.1 1.0 10 Q [m3/h] 

FHW2RV20 

FHW2RV25 

1 

0.01 

0.01 0.1 1.0 Q [l/s] 

The pressure drop is calculated for an average temperature of 70°C (PVV 80/60). 

For other water temperatures, the pressure drop is multiplied with the factor K. 

Average temp. water °C 40 50 60 70 80 90 

K 1.10 1.06 1.03 1.00 0.97 0.93 

FHW32 

FHW33 

0.7 

∆P [bar] 

0.1 

0.7 

∆P [bar] 

0.1

HeatMaster FHW 

FHW12/22 

FHW12/22 

Wiring diagrams showing control panels and thermostats 

1 2 3 4 5 6 7 8 9 10 11 12 

1 2 3 4 5 6 7 8 9 10 11 12 

1 2 3 4 5 6 7 8 9 

AB615 

1 2 3 

SR122 

1 2 3 4 5 6 7 8 9 10 11 12 

L N 

PE P1 P2 3 5 8 11 

ATDS4M 

1 2 3 4 5 6 7 8 9 N 

1 2 3 4 5 6 7 8 9 N 

1 2 3 4 5 6 L N 

1 - 2 - 3 Man - Auto 

T T 

L 1 N (L2) 

230 V~ 

Y - 

FHWR3A 

13 14 15 16 17 18 

13 14 15 16 17 18 

4 5 6 

- 

Y 

3 2 L N PE 

FL103 

SM220SR 

Second unit AVR6-15 

First unit AVR6-15 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Second unit AVR6-15 

13 14 15 16 17 18 

6 

5 

4 

Lo° 

SR122 

Hi° 

Diff 2K 

FHWACT 

FHW2RV20/25 

1 

2 

3 


FHWACT 

FHW2RV20/25 

SR121 

1 

2 

3 

L1 N (L 2) 

230 V~ 

FHW12/22 

FHW12/22 

FHWR3 

Wiring Diagrams 

Automatic temperatur regulation FHWR3A Thermostat SR121 (IP55) and 3-stage switch FHWR3 

1 2 3 4 5 6 7 8 9 10 11 12 

1 2 3 4 5 6 7 8 9 10 11 12 

1 2 3 4 5 6 7 8 9 

AB615 Control Panel 

13 14 15 16 17 18 

1 2 3 

SR121 

13 14 15 16 17 18 



1 2 3 4 5 6 7 8 9 N 

1 2 3 4 5 6 7 8 9 N 

2 4 6 

1 3 5 

HeatMaster AVR6-AVR15 HeatMaster AVR20-AVR30 

Wiring diagrams showing control panels and thermostats 

1 2 3 4 5 6 7 8 9 10 11 12 

1 2 3 4 5 6 7 8 9 10 11 12 

1 2 3 4 5 6 7 8 9 

AB2030 

1 2 3 4 5 6 7 8 9 10 11 12 

1 2 3 4 5 6 7 8 9 10 11 12 

AB2030 

Secon unit AVR20-30 


1 2 3 

SR121 



1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 

SR122 

1 2 3 4 5 6 7 8 9 10 11 12 Second unit AVR20-30 

1 2 3 4 5 6 7 8 9 10 11 12 First unit AVR20-30 

L N 

PE P1 P2 3 5 8 11 

ATDS4M 

T T 

Y - 

- 

Y 

3 2 L N PE 

FL103 

SM220SR 

39

Systemair AB 

Industrivägen 3 

SE-739 30 Skinnskatteberg 

Sweden 

Tel: +46 222 440 00 

Fax: +46 222 440 99 

mailbox@systemair.se 

Systemair Ltd 

Unit 02, Furry Park 

Santry, Dublin 9 

Ireland 

Tel: +35 318 62 45 44 

Fax: +35 318 62 80 30 

sales@systemair.ie 

Systemair Ltd 

Pharaoah House 

Arnolde Close 

Medway City Estate 

Rochester Kent ME2 4SP 

Great Britain 

Tel: +44 16 347 350 00 

Fax: +44 16 347 350 01 

mailbox@systemair.co.uk 

Systemair 2004 Inhouse studio Item no E8011

Air Curtains & Fan heaters.qxd - Systemair

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