Vents PA W Series Mounting instructions
USER’S OPERATION MANUAL
PA W
Air supply unit
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PA W
Introduction
Use
Delivery set
Designation key
Main technical data
Safety requirements
Design and operating logic
Mounting and set-up
Connection to power mains
Technical maintenance
Fault handling
Storage and transportation rules
Manufacturer’s warranty
Acceptance certicate
Electrical connection certicate
Warranty card
3
3
3
3
4
14
14
15
16
17
18
18
19
20
20
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CONTENT
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The unit is designed for supply of intake warmed up air into cottages, oces, hotels, cafes,
conference halls and other domestic and public premises.
The unit is a component unit and is not designed for independent operation.
Transported medium must not contain any ammable or explosive mixtures, evaporation of
chemicals, coarse dust, soot and oil particles, sticky substances, brous materials, pathogens or any
other harmful substances.
INTRODUCTION
USE
DELIVERY SET
The present user’s operation manual contains technical description, data sheet, installation and
mounting guidelines for the air supply unit PA W, VENTS series (hereinafter referred as the unit).
The unit is not designed to be used by children, physically or mentally disabled
persons, persons with sensory disorder, persons with no appropriate experience or
expertise.
The unit may be operated by qualied experts after appropriate instruction about
its use and operation.
Install the unit to be out of reach of children.
Unit - 1 item;
User’s manual - 1 item;
Transport packing: wooden box - 1 item.
DESIGNATION KEY
Number of power supply phases
Heater type
W2 - 2-row water heater
W3 - 3-row water heater
W4 - 4-row water heater
Air capacity [m3/h]
01, 02, 03, 04
Unit type
PA - air supply unit
PA - XX - WХ 3
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PA W
MAIN TECHNICAL DATA
The unit is designed for indoor application with the ambient temperature ranging from -25°C to
+ 55°C for the units PA 01 W2 and PA 01 W4, from -25°C to + 45°C for the units PA 02 W2, PA 02 W4, PA
03 W2 and PA 03 W4, from -25°C to +70 °C for the units PA 04 W2 and PA 04 W3 at relative humidity
up to 80%.
Ingress Protection (IP) rating from solid objects and liquids:
IP 44 for the unit motors;
IP 22 for the assembled unit connected to the air ducts.
The unit series designation, main overall and connecting dimensions, external view are shown in
g. 1 and in table 1. For the technical data, refer to the table 2.
The unit design is regularly being improved, so some models can slightly dier from those ones
described in this manual.
Fig. 1. Overall and connecting dimensions of the unit
Type Dimensions [mm]
B B1 B2 B3 H H1 H2 L L1
PA 01 W 400 420 624 582 200 220 374 1145 1106
PA 02 W 500 520 689 646 300 320 447 1250 1212
PA 03 W 600 620 787 744 350 370 500 1252 1212
PA04 W 700 720 888 844 400 420 546 1302 1262
Table 1. Overall and connecting dimensions of the unit
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Type PA 01
W2
PA 01
W4
PA 02
W2
PA 02
W4
PA 03
W2
PA 03
W4
PA 04
W2
PA 04
W3
Voltage, 50 Hz [V] 3 ~ 400
Max. fan power [W] 320 620 1330 2300
Fan current [A] 0,55 1,05 2,4 4,3
Number of water heating rows 2 4 2 4 2 4 2 3
Total unit power [W] 0,32 0,62 1,33 2,30
Total unit current [A] 0,55 1,05 2,4 4,3
Max. air capacity, m3/h 1200 2350 3260 4100
Rotation speed [min -1] up to 2700 up to 2690 up to 2730 up to 2840
Noise level, 3 m [dB(A)] 51 54 57 75
Max. transported air
temperature [°C]
from -25 to
+55 from -25 to +45 from -25 to +70
Casing material Aluzinc
Insulation 50 mm mineral wool
Filter Pocket G4(F7)*
Connected air duct diameter
[mm] 400x200 500x350 600x350 700x400
Weight [kg] 55 57 61 63 91 94 107 110
* - option
Table 2. Unit technical data
The main technical data of the water heaters integrated into the units are shown in diagrams 2,
3, 4, 5, 6, 7, 8).
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PA W
.
PA 01 W2
Air temperature after heater [°C]
Air ow through the heater [m3/h]
Air speed inside the water heating coils [m/s]
Water ow through the water heating coils [l/s]
Water pressure drop [kPa]
External air temperature [°C]
Coil heating capacity [kW]
Water heater parameters calculation example
Air Speed. Starting from 950 m3/h on the air ow scale draw a vertical line (1) till the air speed axis which makes 3.35 m/s.
Supply air temperature. Prolong the line (1) of air ow up to the point where it crosses the outside air temperature (blue curve), e.g. -15°C;
then draw a horizontal line (2) from this point to the left till crossing water in/out temperature curve (90/70). From this point draw a
ver
tical line (3) to the supply air temperature axis on top of the graphic (+23 °C).
Heating coil capacity. Prolong the line (1) up to the point where it crosses the outside air temperature -15°C (red curve) and draw a
horizontal line (4) from this point to the right until it crosses water in/out temperature curve (90/70), from here draw a vertical line (5) up to
the scale representing the heating coil capacity (13.5 kW).
Water ow. Prolong the line (5) down to water ow axis at the bottom of the graphic (6) (0.14 l/s).
Water pressure drop. Draw the line (7) from the point where line (6) crosses the black curve to the pressure drop axis. (1.5 kPa).
Fig. 2 Calculation of water heater parameters
The basic thermal dynamic characteristics of the water heater for the units PA 01 W2 are stated
in g. 2.
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Water heater parameters calculation example
Air Speed. Starting from 950 m3/h on the air ow scale draw a vertical line (1) till the air speed axis which makes 3.35 m/s.
Supply air temperature. Prolong the line (1) of air ow up to the point where it crosses the outside air temperature (blue curve), e.g. -15°C;
then draw a horizontal line (2) from this point to the left till crossing water in/out temperature curve (70/50). From this point draw a
vertical line (3) to the supply air temperature axis on top of the graphic (+29 °C).
Heating coil capacity. Prolong the line (1) up to the point where it crosses the outside air temperature -15°C (red curve) and draw a
horizontal line (4) from this point to the right until it crosses water in/out temperature curve (70/50), from here draw a vertical line (5) up to
the scale representing the heating coil capacity (16.0 kW).
Water ow. Prolong the line (5) down to water ow axis at the bottom of the graphic (6) (0.2 l/s).
Water pressure drop. Draw the line (7) from the point where line (6) crosses the black curve to the pressure drop axis. (2.1 kPa).
Air temperature after heater [°C]
Air ow through the heater [m3/h]
Air speed inside the water heating coils [m/s]
Water ow through the water heating coils [l/s]
Water pressure drop [kPa]
External air temperature [°C]
Coil heating capacity [kW]
PA 01 W4
Fig. 3 Calculation of water heater parameters
Performance chart for the water heater parameters of the unit PA 01 W4 is shown in g. 3.
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PA W
PA 02 W2
Air temperature after heater [°C]
Air ow through the heater [m3/h]
Air speed inside the water heating coils [m/s]
Water pressure drop [kPa]
External air temperature [°C]
Coil heating capacity [kW]
Water ow through the water heating coils [l/s]
Water heater parameters calculation example
Air Speed. Starting from 2000 m3/h on the air ow scale draw a vertical line (1) till the air speed axis which makes 3.75 m/s.
Supply air temperature. Prolong the line (1) of air ow up to the point where it crosses the outside air temperature (blue curve), e.g. -15°C;
then draw a horizontal line (2) from this point to the left till crossing water in/out temperature curve (90/70). From this point draw a verti-
cal line (3) to the supply air temperature axis on top of the graphic (+22 °C).
Heating coil capacity. Prolong the line (1) up to the point where it crosses the outside air temperature -15°C (red curve) and draw a hori-
zontal line (4) from this point to the right until it crosses water in/out temperature curve (90/70), from here draw a vertical line (5) up to the
scale representing the heating coil capacity (28.0 kW).
Water ow. Prolong the line (5) down to water ow axis at the bottom of the graphic (6) (0.35 l/s).
Water pressure drop. Draw the line (7) from the point where line (6) crosses the black curve to the pressure drop axis. (3.8 kPa).
Fig. 4. Calculation of water heater parameters
Performance chart for the water heater parameters of the unit PA 02 W2 is shown in g. 4.
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PA 02 W4
Air temperature after heater [°C]
Air ow through the heater [m3/h]
Air speed inside the water heating coils [m/s]
Water ow through the water heating coils [l/s]
Water pressure drop [kPa]
External air temperature [°C]
Coil heating capacity [kW]
Water heater parameters calculation example
Air Speed. Starting from 2000 m3/h on the air ow scale draw a vertical line (1) till the air speed axis which makes 3.75 m/s.
Supply air temperature. Prolong the line (1) of air ow up to the point where it crosses the outside air temperature (blue curve), e.g. -15°C;
then draw a horizontal line (2) from this point to the left till crossing water in/out temperature curve (70/50). From this point draw a
vertical line (3) to the supply air temperature axis on top of the graphic (+31 °C).
Heating coil capacity. Prolong the line (1) up to the point where it crosses the outside air temperature -15°C (red curve) and draw a
horizontal line (4) from this point to the right until it crosses water in/out temperature curve (70/50), from here draw a vertical line (5) up to
the scale representing the heating coil capacity (35.0 kW).
Water ow. Prolong the line (5) down to water ow axis at the bottom of the graphic (6) (0.43 l/s).
Water pressure drop. Draw the line (7) from the point where line (6) crosses the black curve to the pressure drop axis. (9.0 kPa).
Fig. 5. Calculation of water heater parameters
Performance chart for the water heater parameters of the unit PA 02 W4 is shown in g. 5.
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PA W
PA 03 W2
Air temperature after heater [°C]
Air ow through the heater [m3/h]
Air speed inside the water heating coils [m/s]
Water ow through the water heating coils [l/s]
Water pressure drop [kPa]
External air temperature [°C]
Coil heating capacity [kW]
Water heater parameters calculation example
Air Speed.
Starting from 2500 m3/h on the air ow scale draw a vertical line (1) till the air speed axis which makes 3.32 m/s.
Supply air temperature.
Prolong the line (1) of air ow up to the point where it crosses the outside air temperature (blue curve), e.g. -20°C;
then draw a horizontal line (2) from this point to the left till crossing water in/out temperature curve (90/70). From this p
oint draw a
vertical line (3) to the supply air temperature axis on top of the graphic (+22 °C).
Heating coil capacity.
Prolong the line (1) up to the point where it crosses the outside air temperature -20°C (red curve) and draw a
horizontal line (4) from this point to the right until it crosses water in/out temperature curve (90/70), from here draw a vert
ical line (5) up to
the scale representing the heating coil capacity (40.0 kW).
Water ow.
Prolong the line (5) down to water ow axis at the bottom of the graphic (6) (0.47 l/s).
Water pressure drop.
Draw the line (7) from the point where line (6) crosses the black curve to the pressure drop axis. (6.0 kPa).
Fig. 6. Calculation of water heater parameters
Performance chart for the water heater parameters of the unit PA 03 W2 is shown in g. 6.
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