Centralised ventilation unit

WR 300

No longer available for delivery
Article number: 0095.0078
Manufacturer: MAICO
Centralised ventilation unit with very effective heat recovery through cross-counter-flow exchanger, EC motors... more information
Application examples: Single-family house, Passive energy house, Office, Waiting room
WR 300 IM0008918.PNG Centralised ventilation unit with very effective heat recovery through cross-counter-flow exchanger, EC motors with constant volumetric flow regulation, interval mode, 80 - 300 m³/h, 4 x DN 160, including RLS 1 WR control unit, DIBT and passive energy house approval, KNX connection possible
WR 300 IM0014531.PNG Centralised ventilation unit with very effective heat recovery through cross-counter-flow exchanger, EC motors with constant volumetric flow regulation, interval mode, 80 - 300 m³/h, 4 x DN 160, including RLS 1 WR control unit, DIBT and passive energy house approval, KNX connection possible
WR 300 IM0015309.PNG Centralised ventilation unit with very effective heat recovery through cross-counter-flow exchanger, EC motors with constant volumetric flow regulation, interval mode, 80 - 300 m³/h, 4 x DN 160, including RLS 1 WR control unit, DIBT and passive energy house approval, KNX connection possible
WR 300 IM0007254.PNG Centralised ventilation unit with very effective heat recovery through cross-counter-flow exchanger, EC motors with constant volumetric flow regulation, interval mode, 80 - 300 m³/h, 4 x DN 160, including RLS 1 WR control unit, DIBT and passive energy house approval, KNX connection possible
WR 300 IM0013704.PNG Centralised ventilation unit with very effective heat recovery through cross-counter-flow exchanger, EC motors with constant volumetric flow regulation, interval mode, 80 - 300 m³/h, 4 x DN 160, including RLS 1 WR control unit, DIBT and passive energy house approval, KNX connection possible

Characteristic curve

WR 300 - Characteristic curve WR 300

I - Interval / vacation operation for humidity protection

  1. Reduced ventilation
  2. Nominal ventilation
  3. Intensive / Party operation
  4. Recommended setting range

WR 300 - Characteristic curve for power - air volumes

  1. At 150 Pa counter pressure
  2. At 100 Pa counter pressure
  3. At 50 Pa counter pressure

WR 300 - Characteristic curve Ventilation for humidity protection

Interval switch for step 1

17 min to switch on

13 min to switch off

WR 300 - Characteristic curve Ventilation for humidity protection

Interval switch for step 1

17 min to switch on

13 min to switch off

Dimensioned drawing

WR 300 - Dimensioned drawing [mm]

  1. DN 160 outgoing air
  2. DN 160 supply air
  3. DN 160 exhaust air
  4. DN 160 outside air
  5. Electrical connection
  6. Condensation connection

Technical data

WR 300 - Technical data

Article WR 300
Number of ventilation levels 4
Air flow volume 80 m³/h - 300 m³/h
Volumetric flow constant yes
Speed controllable
Type of voltage Alternating current
Rated voltage 230 V
Frequency 50 Hz/60 Hz
Power consumption 27 W - 125 W / At 100 Pa counter pressure
Imax 2 A
Degree of protection IP 00
DIBT approval yes
PHI certification yes
Installation site Cellar / Storage tank / Jamb wall / Utility room / Heating room
System type Centralised
Housing material Sheet steel, powder coated
Heat exchanger material Aluminium
Inner coating material Synthetic material
Colour pearl light grey
Weight 46,5 kg
Filter class G4 / F7
Connection diameter 160 mm
Connection diameter of condensation drain 3/4" hose connection
Width 786 mm
Height 825 mm
Depth 500 mm
Degree of heat provision 90 %
Heat exchanger construction type Cross-counterflow
Bypass External
Frost protection External
Enthalpy heat exchanger No
Antifreeze circuit yes
Summer circuit Exhaust air with RLS D1 WR
Filter monitoring with time control
Humidity control optional with HY 5, HY 5 I, HY 10 AP, HY 10 UP
CO2-control (optional) SKD
Air quality control (optional) EAQ 10/2
KNX connection (optional) to be supplied by the customer
MODBUS interface No
Control unit included in scope of delivery. RLS 1 WR
Control unit (optional) RLS D1 WR
Wireless switch on/off (optional) XE 1, XS 1
EnOcean wireless integration (optional) No
Mobile control No
Housing emission sound pressure level 41 dB(A) / 43 dB(A) / 45 dB(A) / Spacing 1m, sound absorption 10 m²
Approval number Z-51.3-216
Packing unit 1 piece
Range K
GTIN (EAN) 4012799950783
Article number 0095.0078

 

63 Hz

125 Hz

250 Hz

500 Hz

1 kHz

2 kHz

4 kHz

8 kHz

Total

LWA2, Step 1 (dB(A))

26

33

37

38

37

31

21

11

43

LWA5, Step 1 (dB(A))

27

37

32

34

38

30

23

10

42

LWA6, Step 1 (dB(A))

26

37

31

40

40

32

24

10

44

LWA2, Level 2 (dB(A))

27

34

38

39

40

33

25

15

45

LWA5, Level 2 (dB(A))

27

38

33

36

41

33

26

12

44

LWA6, Level 2 (dB(A))

27

39

32

42

43

35

27

13

47

LWA2, Level 3 (dB(A))

26

35

38

41

42

36

26

13

47

LWA5, Level 3 (dB(A))

27

40

34

37

43

36

28

15

46

LWA6, Level 3 (dB(A))

27

40

33

43

45

38

30

15

48

LWA2= housing sound power level in dB.

LWA5= free inlet sound power level in dB.

LWA6= free outlet sound power level in dB.

LWA5, LWA6 = sound power level emitted to the free surroundings. Measured at a subsequent operating point on the connections facing the room. LWA5 Exhaust air connections, LWA6 Supply air connections.

Operating point, level 1: Air volume 100 m³/h and external pressure 100 Pa

Operating point, level 2: Air volume 150 m³/h and external pressure 100 Pa

Operating point, level 3: Air volume 200 m³/h and external pressure 100 Pa

Accessories

WR 300 - Accessories

Specific accessories

Product type Name Art. No. Price*(EUR) Action
Wall bracket WRK 300-400 Discontinued product 0018.0493 on request
  • On the notes
Bypass for heat exchanger WRBY 300-400 Discontinued product 0093.0899 on request
  • On the notes
Summer cassette WRSK 300-400 Discontinued product 0095.0152 on request
  • On the notes
Air filter, replacement WSF 300-400 0093.0898 on request
  • On the notes
Air filter, replacement WSG 300-400 0093.0897 on request
  • On the notes
Room air control RLS 1 WR 0157.0809 on request
  • On the notes
Room air control RLS D1 WR 0157.0828 on request
  • On the notes

General accessories

Product type Name Art. No. Price*(EUR) Action
MAICOTherm ventilation duct system, thermally insulated MAICOTherm MT thermally-insulated ventilation duct system - - -
Shutter AS 20 0151.0330 on request
  • On the notes
External grille MGR 160 alu 0078.0036 on request
  • On the notes
Stainless steel cowl LH-V2A 16 0151.0380 on request
  • On the notes
Outside air wall connection KW-AL 16E 0152.0077 on request
  • On the notes
Outside air wall connection KW-AL 16W 0152.0078 on request
  • On the notes
Outside air wall connection KW-AL 20E 0152.0081 on request
  • On the notes
Outside air wall connection KW-AL 20W 0152.0082 on request
  • On the notes
Outgoing air wall connection KW-FL 16E 0152.0079 on request
  • On the notes
Outgoing air wall connection KW-FL 16W 0152.0080 on request
  • On the notes
Outgoing air wall connection KW-FL 20E 0152.0083 on request
  • On the notes
Outgoing air wall connection KW-FL 20W 0152.0084 on request
  • On the notes
Combi-wall connections KWH 16 L 0152.0061 on request
  • On the notes
Combi-wall connections KWH 16 R 0152.0060 on request
  • On the notes
Combi-wall connections KWH 20 L 0152.0063 on request
  • On the notes
Combi-wall connections KWH 20 R 0152.0062 on request
  • On the notes
Roof outlet DF 160 S 0092.0375 on request
  • On the notes
Roofing tile DP 160 SB 0092.0380 on request
  • On the notes
Roofing tile DP 160 A 0092.0383 on request
  • On the notes
Mounting clamp BS 160 0092.0360 on request
  • On the notes
Rain protection grille RG 160 0151.0281 on request
  • On the notes
Disk valve, stainless steel TM-V2A 10 0151.0374 on request
  • On the notes
Disk valve, stainless steel TM-V2A 12 0151.0375 on request
  • On the notes
Disk valve, metal TFA 10 0151.0369 on request
  • On the notes
Disk valve, metal TFA 12 0151.0370 on request
  • On the notes
Disk valve, metal TFZ 10 0151.0364 on request
  • On the notes
Disk valve, metal TFZ 12 0151.0365 on request
  • On the notes
Mounting frame for TFA/TFZ EBR-D 10 0092.0493 on request
  • On the notes
Mounting frame for TFA/TFZ EBR-D 12 0092.0494 on request
  • On the notes
Supply air valve ZWVQ 10 0152.0064 on request
  • On the notes
Supply air valve ZWVQ 12 0152.0065 on request
  • On the notes
Thermally insulated long pipe elbow ABLS 160 0058.0048 on request
  • On the notes
Sound absorber box SB 12/16 0059.0995 on request
  • On the notes
Tubular sound absorber RSR 10 0092.0311 on request
  • On the notes
Tubular sound absorber RSR 12 0092.0312 on request
  • On the notes
Tubular sound absorber RSR 16 0092.0314 on request
  • On the notes
Tubular sound absorber RSR 16/50 0092.0324 on request
  • On the notes
Slide-in sound absorber SDE 8 0044.0213 on request
  • On the notes
Slide-in sound absorber SDE 10 0044.0214 on request
  • On the notes
Slide-in sound absorber SDE 12 0044.0215 on request
  • On the notes
Slide-in sound absorber SDE 16 0044.0216 on request
  • On the notes
Electrical air heater ERH 16-2 0082.0102 on request
  • On the notes
Water air heater WRH 16-2 0082.0118 on request
  • On the notes
Air filter TFE 16-4 0149.0077 on request
  • On the notes
Air filter TFE 16-5 0149.0061 on request
  • On the notes
Air filter TFE 16-7 0149.0052 on request
  • On the notes
Radio switch XS 1 0157.0344 on request
  • On the notes
Radio receiver XE 1 0157.0343 on request
  • On the notes
Thermostat TH 10 0157.0764 on request
  • On the notes
Temperature control system ETL 16 P Discontinued product 0157.0824 on request
  • On the notes
Channel sensor FL 30 P 0157.0780 on request
  • On the notes
Room sensor FR 30 P 0157.0781 on request
  • On the notes
Air flow monitor LW 9 0157.0779 on request
  • On the notes
Hygrostat HY 10 AP Discontinued product 0157.0358 on request
  • On the notes
Hygrostat HY 10 UP Discontinued product 0157.0357 on request
  • On the notes
CO2 sensor SKD 0157.0345 on request
  • On the notes
Air quality controller EAQ 10/2 0157.0834 on request
  • On the notes
Hygrostat HY 5 No longer available for delivery 0157.0123 on request
  • On the notes
Hygrostat HY 5 I No longer available for delivery 0157.0125 on request
  • On the notes

Product description

Productdescription

WR 300

short description

Centralised ventilation unit with very effective heat recovery through cross-counter-flow exchanger, EC motors with constant volumetric flow regulation, interval mode, 80 - 300 m³/h, 4 x DN 160, including RLS 1 WR control unit, DIBT and passive energy house approval, KNX connection possible

Product description

Features

  • Special energy savings due to DC motors with EC technology.
  • With automatic volumetric flow regulation for constant air quantities.
  • Sheet steel, powder coated housing.
  • Colour pearl light grey.
  • Inner coating of heat resistant plastic material (EPP), non-hygroscopic.
  • Simple filter change is possible without tools.
  • 2 x G4 filter, 1 x F7 filter.
  • 4 DN 160 duct connections with double lip seals. For directly connecting up tubular sound absorbers.
  • Summer cassette as accessory.
  • DIBT approval and PH certification
  • Connection to KNX systems possible.

Control unit

  • RLS 1 WR control unit is included in the scope of delivery.
  • Filter change message.
  • Set the 4 ventilation levels using buttons.
  • Fault display.
  • Other control units can be connected in parallel.

Heat exchanger

  • Cross-counterflow plate heat exchanger made of aluminium.
  • The heat exchanger can be removed easily once the front plate has been unscrewed.
  • The heat exchanger can be easily cleaned using water.

Frost protection

  • Guaranteed frost protection ensures that the heat exchanger does not freeze.
  • The frost protection feature switches the supply air fan off when the outgoing air temperature is too low and automatically back on again.
  • Recommendation: Combine units with heat recovery with a brine earth heat exchanger.

Energy-efficient fans

  • 2 centrifugal DC fans, curved to the front. In the supply or exhaust air.
  • 4 ventilation levels:
    • I = Interval / vacation operation for humidity protection
    • 1 = Reduced ventilation
    • 2 = Nominal ventilation
    • 3 = Intensive / party operation
  • The air volume is linearly adjustable.
  • 300-type fans can be easily swapped for 400-type fans.

Mounting instructions

  • Feet for installation.
  • Installation on the wall or a pedestal is required to ensure access to the condensation connection.
  • Housing covers can be unscrewed.
  • Provide sound absorbers on the inlet and outlet sides.

Electrical connection

  • Ready for service.
  • Prepared for connection of sensors.
  • Potential-free contact e.g. for operating display.
  • Central inclusion in KNX/EIB bus possible.

Condensation drain

  • Condensation is drained out at the bottom of the unit. Condensation drain (3/4" hose diameter) to connect up to a siphon.
  • Stable foamed-in condensation tank.

Plus function (summer operation)

  • In eco mode, only the exhaust fan runs, so around 50 % less power is used. Possible with RLS D1 WR digital control.

Table of contents

Wiring diagram

WR 300 - Wiring diagram

WR 300, WR 400 ventilation unit with several RLS 1 WR room air controls

A - WR 300, WR 400 ventilation unit

A1 - control circuit board

B1 - operator unit (1) RLS 1 WR

B2 - operator unit (2) RLS 1 WR

Up to 5 RLS 1 WR operator units can be connected to the ventilation unit. (Only if there is no CO2 sensor connected).

The ventilation unit is prepared in the factory for connection to the RLS 1 WR operator unit, i.e. jumper 8 is bridged on control circuit board A1.

W1 - 230 V AC connecting cable

W2 - control cable for operator unit

V - distributor (supplied by the customer)



WR 300, WR 400 ventilation unit with RLS 1 WR room air control and CO2 sensor

A - WR 300, WR 400 ventilation unit

A1 - control circuit board

CO2 - CO2 sensor SKD (accessories)

W1 - 230 V AC connecting cable

W2 - control cable for room air control

W3' - connecting cable for an external CO2 sensor (to be supplied by the customer) Connection in the ventilation unit to the "CO2" and "OT" terminals of the control circuit board A1. The CO2 sensor must be activated in the ventilation unit. To do this, bridge jumper 10 (CO2) on control circuit board A1.



WR 300, WR 400 ventilation unit with RLS 1 WR room air control and differential pressure controller

The differential pressure controller P is a safety device which allows a ventilation system to be operated at the same time as an air-ventilated fireplace. The differential pressure controller prevents a ventilation unit connected to this safety device from being operated if the air pressure in the room falls below the outside pressure level. In the event of insufficient pressure, the potential-free relay contact (N/C contact) in the differential pressure controller opens. The fans in the ventilation unit stop and the RLS1WR operator unit is blocked until the relay contact in the pressure controller closes again and the fans start back up again.

Relay contact k is connected in series to the fans' supply voltage for this purpose.

When selecting the differential pressure controller, note the technical data of the switching output (potential-free relay contact k). Minimum switching capacity: 230V AC, 2A.

A - WR 300, WR 400 ventilation unit

A1 - control circuit board

B1 - room air control RLS 1 WR

P - differential pressure controller with potential-free relay contact k (provided by customer)

k - switching output, potential-free relay contact

W3" - connecting cable for differential pressure controller (provided by customer)

The connection between the differential pressure controller and ventilation unit is made with a W3" connecting cable. The potential-free relay contact k of the differential pressure controller P is connected to control circuit board A2 at terminals "N" and "N-". The jumper on terminals "N" and "N-" of control circuit board A2 must be removed first.



WR 300, WR 400 ventilation unit with RLS 1 WR room air control and hygrostat

Connection of hygrostat with potential-free contact. If the potential-free contact in the hygrostat closes due to room dampness, the ventilation unit is set to LS3 regardless of the ventilation level set. Once the dampness has been removed from the room (contact in hygrostat opens), the ventilation unit switches back to the ventilation level previously set.

A - WR 300, WR 400 ventilation unit

A1 - control circuit board: Jumper 10 (CO2) open

B1 - room air control RLS 1 WR

r.F. (relative humidity) - HY5 or HY5I hygrostat, see accessories

The ventilation unit is prepared in the factory for connection to a hygrostat with a potential-free contact, jumper 10 on control circuit board A2 is open.

W3' - connecting cable for an external hygrostat (to be supplied by the customer).

Connection to control circuit board A2 at "CO2" terminals

see diagram



WR 300, WR 400 ventilation unit with RLS 1 WR room air control

A - WR 300, WR 400 ventilation unit

ABL - exhaust air

A1 - control circuit board

B - operator unit RLS 1 WR

BA - operating display

M1 - supply air fan

M2 - exhaust air fan

N - mains

S - door contact switch/activated via front plate

S1 [blue] - setting potentiometer for supply air volumetric flow, ventilation level 1

S2 [blue] - setting potentiometer for supply air volumetric flow, ventilation level 2

S3 [blue] - setting potentiometer for supply air volumetric flow, ventilation level 3

S1 [red] - setting potentiometer for exhaust air volumetric flow, ventilation level 1

S2 [red] - setting potentiometer for exhaust air volumetric flow, ventilation level 2

S3 [red] - setting potentiometer for exhaust air volumetric flow, ventilation level 3

Tmin - frost protection temperature sensor

W1 - 230V AC connecting cable

W2 - control cable for operator unit

ZUL - supply air

Jumper settings:

J 1-3 - unit type, 001=WR 300 / 010=WR 400

J 4-5 - frost protection temperature

J 6 - no function

J 7 - time limitation (60 minutes) LS 3 is activated

J 8 - operator unit RLS 1 WR is selected

J 9 - off function is approved on RLS 1 WR operator unit

J 10 - 0 - 10 V input for CO2-sensor blocked

Further connection options:

W3/W3' Connecting cable (to be supplied by the customer) for external CO2-sensor, hygrostat or external operation display.

CO2-sensor: SKD Hygrostat:HY5 / HY5I

k1 - potential-free relay contact (max.3A / 250V, 2A / 30 V DC). The contact is closed when the ventilation unit is running.



WR 300, WR 400 ventilation unit with RLS 2 F room air control

A - WR 300, WR 400 ventilation unit

ABL - exhaust air

A1 - control circuit board

B - operator unit RLS 1 WR

BA - operating display

M1 - supply air fan

M2 - exhaust air fan

N - mains

S - door contact switch/activated via front plate

S1 [blue] - setting potentiometer for supply air volumetric flow, ventilation level 1

S2 [blue] - setting potentiometer for supply air volumetric flow, ventilation level 2

S3 [blue] - setting potentiometer for supply air volumetric flow, ventilation level 3

S1 [red] - setting potentiometer for exhaust air volumetric flow, ventilation level 1

S2 [red] - setting potentiometer for exhaust air volumetric flow, ventilation level 2

S3 [red] - setting potentiometer for exhaust air volumetric flow, ventilation level 3

Tmin - frost protection temperature sensor

W1 - 230 V AC connecting cable

W2 - control cable for operator unit

ZUL - supply air

* - Brown and white cable cores are not required. Insulate them.

Jumper settings:

J 1-3 - unit type, 001=WR 300 / 010=WR 400

J 4-5 - frost protection temperature

J 6 - no function

J 7 - no function when using the RLS 2 F operator unit

J 8 - operator unit RLS 1 WR is selected

J 9 - no function when using the RLS 2 F operator unit

J 10 - 0 - 10 V input for CO2-sensor blocked

Further connection options:

W3/W3' Connecting cable (to be supplied by the customer) for external CO2-sensor, hygrostat or external operation display.

CO2-sensor: SKD Hygrostat: HY 5 / HY 5 I

k1 - potential-free relay contact (max.3A / 250V, 2A / 30 V DC). The contact is closed when the ventilation unit is running.



WR 300 / WR 400 wiring diagram with RLS D1 WR room air control (plus function)

A - WR 300 / WR 400 or RB 300 / RB 400 ventilation unit

A1 - Electronic slide-in module

A2 - Control circuit board

B1 - RLS 1 WR or RB-ZF4 room air control

B - RLS D1 WR or RB-D1-ZF4 room air control

W1 -230 VAC connecting cable

W2 - Shielded control cable (to be supplied by customer) for RLS D1 WR / RB-D1-ZF4 room air control. Room air control B (RLS D1 WR / RB-D1-ZF4) can also be connected instead of room air control B1 (RLS 1 WR /

RB-D1-ZF4). External diameter of the shielded cable 3.2...6.5 mm, e.g. LIYCY 2 x 0.75 mm².

W2' - Control cable (to be supplied by customer) for RLS 1 WR / RB-ZF4 room air control. External diameter of the control cable 3.2...6.5 mm, e.g. LIYY 6 x 0.34 mm²

S1 - Unit switch

M1 - Supply air fan

M2 - Exhaust air fan

S - Door contact switch/activated via front plate

T-min - Frost protection temperature sensor

S1 [blue] - setting potentiometer for supply air volumetric flow, ventilation level 1

S2 [blue] - setting potentiometer for supply air volumetric flow, ventilation level 2

S3 [blue] - setting potentiometer for supply air volumetric flow, ventilation level 3

S1 [red] - setting potentiometer for exhaust air volumetric flow, ventilation level 1

S2 [red] - setting potentiometer for exhaust air volumetric flow, ventilation level 2

S3 [red] - setting potentiometer for exhaust air volumetric flow, ventilation level 3

Jumper settings

J 1-3 - WR 300 (0,0,1) / WR 400 (0,1,0) unit type

J 4-5 - Frost protection temperature

J 6 - No function

J 7 - Time limitation (60 minutes) LS3 is activated

J 8 - RLS 1 WR or RLS D1 WR control unit is selected

J 9 - Humidity protection is blocked at switch position OFF Control unit: Switch setting OFF (standby) is

released

J 10 - 0 - 10V input for CO2 sensor blocked

Further connection options

W3 - Connecting cable (provided by customer) for external operating display.

k1- Potential-free relay contact k1 (max. 3 A / 250 VAC, 2 A / 30 VDC). Contact k1 is closed when the ventilation unit is running.

W4 - Connecting cable (to be supplied by customer) for external CO2/VOC sensor or external hygrostat. Hygrostat with potential-free contact.

W5 -Connecting cable (provided by customer) for external differential pressure controller. Differential pressure controller with potential-free relay contact. Minimum switching capacity of relay contact: 230 VAC / 2A. Remove J1 bridge on A2 control circuit board.



Predecessor - successor

WR 300 - Successor

Product type Name Art. No. Action
Centralised ventilation unit WR 310 0095.0220
  • On the notes

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