Characteristic curve

WR 600 - Characteristic curve

I - Interval operation

Reduced ventilation
Nominal ventilation
Intensive / Party operation
Recommended setting range

WR 600 - Characteristic curve Ventilation for humidity protection

Interval switch for step 1

17 min to switch on

13 min to switch off

WR 600 - Characteristic curve Ventilation for humidity protection

Interval switch for step 1

17 min to switch on

13 min to switch off

Dimensioned drawing

WR 600 - Dimensioned drawing [mm]

DN 250 outgoing air
DN 250 supply air
DN 250 exhaust air
DN 250 outside air
Electrical connection
Condensation drain (3/4" hose connection)

Technical data

WR 600 - Technical data

Technical data

Article	WR 600
Number of ventilation levels	4
Air flow volume	150 m³/h - 620 m³/h
Volumetric flow constant	yes
Speed controllable	−
SEC average	-30,9 kWh/(m²*a)
Energy efficiency class	B
Type of voltage	Alternating current
Rated voltage	230 V
Frequency	50 Hz/60 Hz
SPI value in accordance with DIN EN 13141-7 (A7)	0,31 Wh/m³
Power consumption	56 W - 303 W / At 100 Pa counter pressure
I_max	3 A
Degree of protection	IP 00
DIBT approval	yes
PHI certification	No
Installation site	Cellar / Storage tank / Jamb wall / Utility room / Heating room / Loft
Installation position	horizontal
System type	Centralised
Housing material	Sheet steel, powder coated
Heat exchanger material	Aluminium
Inner coating material	Synthetic material
Colour	pearl light grey
Weight	89 kg
Weight including packaging	106,5 kg
Filter class	G4 / F7
Connection diameter	250 mm
Connection diameter of condensation drain	3/4" hose connection
Width	1.115 mm
Height	1.200 mm
Depth	505 mm
Width with packaging	1.160 mm
Height with packaging	1.390 mm
Depth with packaging	590 mm
Airstream temperature at I_Max	50 °C
Max. degree of heat provision in accordance with DIN EN 13141-7 (A7)	89 %
Heat exchanger construction type	Cross-counterflow
Bypass	No
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 regulation	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	43 dB(A) / 46 dB(A) / 50 dB(A) / Spacing 1m, sound absorption 10 m²
Approval number	Z-51.3-234
Packing unit	1 piece
Range	K
GTIN (EAN)	4012799950806
Article number	0095.0080

Sound power level in octave range

	63 Hz	125 Hz	250 Hz	500 Hz	1 kHz	2 kHz	4 kHz	8 kHz	Total
L_WA2, Step 1 (dB(A))	31	37	37	39	38	35	27	17	45
L_WA5, Step 1 (dB(A))	37	40	39	39	38	32	21	12	46
L_WA6, Step 1 (dB(A))	38	39	40	40	43	37	23	19	48
L_WA2, Level 2 (dB(A))	33	41	40	42	41	37	31	19	48
L_WA5, Level 2 (dB(A))	38	43	44	42	42	35	25	16	49
L_WA6, Level 2 (dB(A))	38	42	43	42	46	40	26	20	51
L_WA2, Level 3 (dB(A))	34	44	44	46	45	41	35	24	52
L_WA5, Level 3 (dB(A))	38	45	45	43	45	39	29	21	51
L_WA6, Level 3 (dB(A))	40	46	47	46	51	45	30	22	55

L_WA2= housing sound power level in dB.

L_WA5= free inlet sound power level in dB.

L_WA6= free outlet sound power level in dB.

L_WA5, L_WA6 = sound power level emitted to the free surroundings. Measured at a subsequent operating point on the connections facing the room. L_WA5 Exhaust air connections, L_WA6 Supply air connections.

Operating point, level 1: Air volume 230 m³/h and external pressure 100 Pa

Operating point, level 2: Air volume 345 m³/h and external pressure 100 Pa

Operating point, level 3: Air volume 460 m³/h and external pressure 100 Pa

Accessories / Spare parts

WR 600 - Accessories / Spare parts

Specific accessories

Product type	Name	Art. No.	Price*(EUR)
Summer cassette	WRSK 600 Discontinued product	0095.0153	on request
Air filter, replacement	WSF 600	0093.0689	on request
Air filter, replacement	WSG 600-1	0093.0688	on request
Room air control	RLS 1 WR	0157.0809	on request
Room air control	RLS D1 WR Discontinued product	0157.0828	on request

General accessories

Product type	Name	Art. No.	Price*(EUR)
Shutter	AS 25	0151.0331	on request
External grille	MLZ 25	0151.0102	on request
Disk valve, stainless steel	TM-V2A 10	0151.0374	on request
Disk valve, stainless steel	TM-V2A 12	0151.0375	on request
Disk valve, metal	TFA 10	0151.0369	on request
Disk valve, metal	TFA 12	0151.0370	on request
Disk valve, metal	TFZ 10	0151.0364	on request
Disk valve, metal	TFZ 12	0151.0365	on request
Mounting frame for TFA/TFZ	EBR-D 10	0092.0493	on request
Mounting frame for TFA/TFZ	EBR-D 12	0092.0494	on request
Supply air valve	ZWVQ 10	0152.0064	on request
Supply air valve	ZWVQ 12	0152.0065	on request
Tubular sound absorber	RSR 10 Remaining parts	0092.0311	on request
Tubular sound absorber	RSR 12 Remaining parts	0092.0312	on request
Tubular sound absorber	RSR 25/50 Remaining parts	0092.0327	on request
Tubular sound absorber	RSR 8-1	0092.0591	on request
Tubular sound absorber	RSR 10-1	0092.0592	on request
Tubular sound absorber	RSR 12-1	0092.0593	on request
Tubular sound absorber	RSR 25/50-1	0092.0605	on request
Slide-in sound absorber	SDE 8	0044.0213	on request
Slide-in sound absorber	SDE 10	0044.0214	on request
Slide-in sound absorber	SDE 12	0044.0215	on request
Slide-in sound absorber	SDE 16	0044.0216	on request
Electrical air heater	DRH 25-6	0082.0107	on request
Water air heater	WRH 25-4	0082.0120	on request
Air filter	TFE 25-4	0149.0079	on request
Air filter	TFE 25-7	0149.0054	on request
Contactor	US 16 T	0157.0769	on request
Thermostat	TH 10	0157.0764	on request
Channel sensor	FL 30 P	0157.0780	on request
Room sensor	FR 30 P	0157.0781	on request
Air flow monitor	LW 9	0157.0779	on request
Hygrostat	HY 230	0157.0126	on request
Hygrostat	HY 230 I	0157.0127	on request
CO2 sensor	SKD	0157.0345	on request
Tubular sound absorber	RSR 8 No longer available for delivery	0092.0310	on request
Air filter	TFE 25-5 No longer available for delivery	0149.0063	on request
Radio switch	XS 1 No longer available for delivery	0157.0344	on request
Radio receiver	XE 1 No longer available for delivery	0157.0343	on request
Temperature control system	ETL 16 P No longer available for delivery	0157.0824	on request
Air quality controller	EAQ 10/2 No longer available for delivery	0157.0834	on request
Hygrostat	HY 10 AP No longer available for delivery	0157.0358	on request
Hygrostat	HY 10 UP No longer available for delivery	0157.0357	on request

Spare parts

Product type	Name	Art. No.	Price*(EUR)
Housing electronics	GHE WRRB 600	E018.0995.0001	on request
Mains filter	NF WRRB 600	E157.0043.0000	on request
Circuit board	PL WSRB 1	E101.1353.0000	on request
Circuit board	PL WRWSRB 2	E101.1352.0005	on request
Temperature sensor	TF WRWSRB 2	E157.1083.0000	on request
Door contact switch	TS 1	E157.1150.0000	on request
Fans	V WRRB 600	E156.0126.0000	on request
Heat exchanger	WT WRRB 600	E192.0507.9000	on request

Product description

Productdescription

short description

Name: WR 600
Brand: MAICO
SKU: 0095.0080

Centralised ventilation unit with very effective heat recovery through cross-counter-flow exchanger, EC motors with constant volumetric flow regulation, interval mode, 150 - 620 m³/h, 4 x DN 250, 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.
2 DN 250 duct connections with double lip seals each. For directly connecting up tubular sound absorbers.
DIBT approval and PH certification.
Connection to KNX systems possible.

Control unit

RLS 1 WR control unit is included in the scope of delivery as standard.
Filter change warning displayed on the control unit.
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.

Mounting instructions

Feet for installation.
Ensure access to condensation connection on side.
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 from the side of the unit. Condensation drain (3/4" hose connection) 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.

Wiring diagram

WR 600 - Wiring diagram

Wiring diagram for WR 600 ventilation with RLS D1 WR room air control (plus function)

A - WR 600 / RB 600 ventilation unit

A1 - WR 600 / RB 600 terminal box

A2 - Control circuit board

B1 - RLS 1 WR or RB-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-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

F - Mains filter

MP1 - Motor board 1 for supply air fan

MP2 - Motor board 2 for exhaust air fan

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 - Unit type, 011 = WR 600 / RB 600

J 4-5 - Frost protection temperature

J 6 - No function

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

J 8 - RLS 1 WR/RB-ZF4 or RLS D1 WR/RB-D1-ZF4 room air control is selected

J 9 - Humidity protection is blocked at switch position OFF. Room air control: switch setting OFF (standby) is released

J 10 - 0 - 10 V 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.

W3' - Connecting cable (to be supplied by customer) for external CO2/VOC sensor or external hygrostat. Hygrostat with potential-free contact.

W3" -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.

WR 600 ventilation unit with RLS 1 WR room air control and CO<sub>2</sub>sensor

Connection of a CO2 sensor for the demand-driven supply of fresh air. The ventilation unit only reacts to the CO₂sensor if ventilation level 2 (nominal ventilation) is selected at the room air control.

A1 - electrical terminal box WR 600

A2 - control circuit board: Jumper 10 (CO2) set

B1 - room air control RLS 1 WR

CO2 - CO₂sensor SKD

W1 - 230 V AC connecting cable

W2 control cable for room air control

W3' - connecting cable for external CO₂sensor (to be supplied by the customer). Connection to control circuit board A2 at terminals “CO2” and “OT”. Set jumper 10 (CO2) to release the feature, see figure.

Switching points for CO₂sensor

< 900 ppm, ventilation unit switches to ventilation level 1. Ventilation level 2 is shown at the room air control.

> 1,000 ppm, ventilation unit switches from ventilation level 1 to ventilation level 2.

> 1,100 ppm, ventilation unit switches to ventilation level 3. Ventilation level 2 is shown at the room air control.

< 1,000 ppm, ventilation unit switches from ventilation level 3 to ventilation level 2.

WR 600 ventilation unit with RLS 1 WR room air control and differential pressure controller

Parallel operation of fireplace and ventilation unit

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, e.g. Wodtke DS 01, prevents a ventilation unit that is connected to this safety device being operated, if there is negative pressure in the living room.

The potential-free relay contact (n/c) in the differential pressure controller switches the fans in the ventilation unit off, if required. Relay contact k is connected in series to the fans' supply voltage for this purpose.

This blocks the room air control RLS 1 WR. The LED display goes out. The unit is only released again when the differential pressure controller switches the fans back on. The ventilation unit runs at the same ventilation level as before it was blocked.

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

The connection between the differential pressure controller and ventilation unit is made with 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 " ".

Before this, the jumpers on the terminals "N" and " " on the control circuit board A2 must be removed.

A1 - electrical terminal box WR 600

A2 - 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)

ABL - exhaust air

ZUL - supply air

WR 600 ventilation unit with up to 5 RLS 1 WR room air controls

Up to 5 RLS 1 WR room air controls can be connected to the ventilation unit. No CO2 sensor should be connected if several room air controls are connected.

A1 - electrical terminal box WR 600

A2 - control circuit board: Jumper setting = Factory setting

B1 - 1 RLS 1 WR room air control

B2 - 2. RLS 1 WR room air control

W1 - 230 V AC connecting cable

W2 - control cable for room air control

V - distributor (supplied by the customer)

The ventilation unit is factory-set for the connection of the RLS 1 WR room air control. Jumper 8 is set on the control circuit board A2.

WR 600 ventilation unit with RSL 2 F room air control and HY 5 hygrostat

Connection of a hygrostat for demand-driven humidity extraction. This must have a potential-free switching output, e.g. Maico Hygrostat HY 5.

The hygrostat always switches the ventilation unit to ventilation level 3 if the defined humidity value is exceeded. If the humidity in the room drops, the ventilation unit switches back to the previously selected ventilation level.

If you switch manually or using the timer from ventilation level 3 to level 2 or 1, this deactivates the automatic function of the hygrostat temporarily. This is then switched back to active if the level drops below the hygrostat set point once.

A1 - electrical terminal box WR 600

A2 - control circuit board: Jumper 10 (CO2) not set / Jumper 8 not set

B1 - room air control RLS 2 F

r.F. (relative humidity) r.F. (relative humidity) - Hygrostat HY 5, see accessories

W1 - 230 V AC connecting cable

W2 - control cable for room air control

W3' - connecting cable for an external hygrostat (to be supplied by the customer). Connection to control circuit board A2 at “CO2” terminal, see figure.

Set the switching point at the hygrostat manually.

Never connect a hygrostat and a CO2 sensor at the same time.

Wiring diagram for WR 600 ventilation with RLS 1 WR room air control

A - WR 600 ventilation unit

A1 - electrical terminal box

A2 - control circuit board

B/B1 - room air control

W1 - 230 V AC connecting cable

W2 - control cable for room air control

F - mains filter

MP1 - motor board 1 for supply air fan

MP2 - motor board 2 for exhaust air fan

M1 - supply air fan

M2 - exhaust fan

S - door contact switch: activated by front plate

Tmin - Frost protection temperature sensor

Supply air

S1 (blue) - Potentiometer adjuster, ventilation level 1

S2 (blue) - Potentiometer adjuster, ventilation level 2

S3 (blue) - Potentiometer adjuster, ventilation level 3

Exhaust air

S1 (red) - Potentiometer adjuster, ventilation level 1

S2 (red) - Potentiometer adjuster, ventilation level 2

S3 (red) - Potentiometer adjuster, ventilation level 3

Jumper settings

J 1-3 Potentiometer volumetric flow range

J 4-5 Frost protection temperature

J 6 No function

J 7 Ventilation level 3 is reset after an hour

J 8 Room air control (RLS 1 WR factory setting)

J 9 Switching off the ventilation unit possible (on/off active)

J 10 Hygrostat connection released

Further connection options

W3/W3' - Connection cable (supplied by customer) for hygrostat, CO2 sensor, external operating display, thermostat or differential pressure controller.

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

ABL - exhaust air

ZUL - supply air

N - mains

BA - operating display

BT - operator unit

Wiring diagram for WR 600 ventilation with RLS 2 F room air control

A - WR 600 ventilation unit

A1 - electrical terminal box

A2 - control circuit board

B/B1 - room air control

W1 - 230 V AC connecting cable

W2 - control cable for room air control

F - mains filter

MP1 - motor board 1 for supply air fan

MP2 - motor board 2 for exhaust air fan

M1 - supply air fan

M2 - exhaust fan

S - door contact switch: activated by front plate

Tmin - Frost protection temperature sensor

Supply air

S1 (blue) - Potentiometer adjuster, ventilation level 1

S2 (blue) - Potentiometer adjuster, ventilation level 2

S3 (blue) - Potentiometer adjuster, ventilation level 3

Exhaust air

S1 (red) - Potentiometer adjuster, ventilation level 1

S2 (red) - Potentiometer adjuster, ventilation level 2

S3 (red) - Potentiometer adjuster, ventilation level 3

Jumper settings

J 1-3 Potentiometer volumetric flow range

J 4-5 Frost protection temperature

J 6 No function

J 7 Ventilation level 3 is reset after an hour

J 8 Room air control (RLS 1 WR factory setting)

J 9 Switching off the ventilation unit possible (on/off active)

J 10 Hygrostat connection released

Further connection options

W3/W3' - Connection cable (supplied by customer) for hygrostat, CO2 sensor, external operating display, thermostat or differential pressure controller.

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

ABL - exhaust air

ZUL - supply air

N - mains

BA - operating display

BT - operator unit

WR 600 ventilation unit with RSL 1 WR room air control and HY 5 hygrostat

Connection of a hygrostat for demand-driven humidity extraction. This must have a potential-free switching output, e.g. Maico Hygrostat HY 5.

If you switch manually from ventilation level 3 to level 2 or 1, this deactivates the automatic function of the hygrostat temporarily. This is then switched back to active if the level drops below the hygrostat set point once.

A1 - electrical terminal box WR 600

A2 - control circuit board: Jumper 10 (CO2) open

B1 - room air control RLS 1 WR

r.F. (relative humidity) r.F. (relative humidity) - Hygrostat HY 5, see accessories

W1 - 230 V AC connecting cable

W2 - control cable for room air control

W3' - connecting cable for an external hygrostat (to be supplied by the customer). Connection to control circuit board A2 at “CO2” terminal, see figure.

Set the switching point at the hygrostat manually.

Never connect a hygrostat and a CO2 sensor at the same time.

WR 600 ventilation unit with RSL 1 WR or RLS 2 F room air control and electric air heater

If the heat recovery unit is installed in a passive-energy house, a heat register in the outside air is necessary, in order to guarantee a permanent air exchange.

It preheats cold outside air and keeps the heat exchanger free of frost. The switch-on temperature of the TH 10 should be set to -3℃.

If the outside air temperature gets too cold, the external frost protection heating of the DRH 25-6 switches on and guarantees an uninterrupted ventilation operation.

The switch-off difference should be set to 5 K. Optionally, the switch-on temperature can be adjusted manually using the setting wheel at the TH 10.

The air flow controller sensor "S1" must be installed in the direction of flow, at least 30 cm ahead of the electrical air heater. The TH 10 temperature sensor "R1" must be installed in the air flow direction, at least 50 cm after the electrical air heater.

LW 9 - air flow monitor

S1 - air flow monitor sensor before the DRH..

JP1 - plug jumper on operating mode “H”. Relay switches on as the temperature drops.

TH 10 - thermostat

R1 - temperature sensor after DRH..

US 16 T- universal contactor

DRH 25-6 - electrical air heaters

S - sensor

We recommend the filter box TFE 25-4 (with G4 filter) to protect the electrical heat register against dirt. If a filter box is used, the G4 filter in the outside air channel can be removed from the heat recovery unit.

A ground collector and brine-air heat exchanger can be used to keep the heat exchanger free of frost.

For external heat register, filter box, outside air and outgoing air channel: These must be diffusion-resistant insulated to protect against condensation.

Downloads / Videos

WR 600 - Downloads / Videos

Predecessor - successor

WR 600 - Predecessor

Product type	Name	Art. No.	Action
Aeronom room air system	WS 600 No longer available for delivery	0095.0056

Centralised ventilation unit

WR 600

WR 600 - Characteristic curve

WR 600 - Characteristic curve Ventilation for humidity protection

WR 600 - Characteristic curve Ventilation for humidity protection

WR 600 - Dimensioned drawing [mm]

WR 600 - Technical data

WR 600 - Accessories / Spare parts

Specific accessories

General accessories

Spare parts

short description

Product description

Features

Control unit

Heat exchanger

Frost protection

Energy-efficient fans

Mounting instructions

Electrical connection

Condensation drain

Plus function (summer operation)

Table of contents

WR 600 - Wiring diagram

Wiring diagram for WR 600 ventilation with RLS D1 WR room air control (plus function)

WR 600 ventilation unit with RLS 1 WR room air control and CO<sub>2</sub>sensor

WR 600 ventilation unit with RLS 1 WR room air control and differential pressure controller

WR 600 ventilation unit with up to 5 RLS 1 WR room air controls

WR 600 ventilation unit with RSL 2 F room air control and HY 5 hygrostat

Wiring diagram for WR 600 ventilation with RLS 1 WR room air control

Wiring diagram for WR 600 ventilation with RLS 2 F room air control

WR 600 ventilation unit with RSL 1 WR room air control and HY 5 hygrostat

WR 600 ventilation unit with RSL 1 WR or RLS 2 F room air control and electric air heater

WR 600 - Downloads / Videos

WR 600 - Predecessor