Wolf CRL evo max Series, CRL-iD-9000, CRL-iD-4800, CRL-iD-6200, CRL-iH-1300 Installation And Maintenance Instructions Manual

GB

Installation and maintenance instructions

COMFORT VENTILATION UNIT WITH THERMAL WHEEL HEAT
EXCHANGER

CRL / CRL evo max
(Translation of the original)

English | subject to modications!

3064361_201811

Table of contents

Table of contents

1 General / Safety information ................................................................... 3

2 Standards, regulations / disposal ........................................................... 5

3 CRL-iD unit layout .................................................................................. 6

4 CRL-iD appliance versions ..................................................................... 8

5 CRL-iH unit layout .................................................................................. 9

5.1 CRL-iH evo max unit layout ...................................................................11

6 CRL-iH appliance versions ................................................................... 13

7 CRL-iDH unit layout .............................................................................. 14

8 CRL-iDH appliance versions ........................................................................16

9 CRL-A unit layout ................................................................................. 17

9.1 CRL-A evo max unit layout ................................................................... 19

10 CRL-A appliance versions .................................................................... 21

11 Delivery / Handling ............................................................................... 22

12 Unit splitting for handling purposes - CRL ............................................ 24

13 Assembly - CRL evo max ..................................................................... 29

14 Installation information for external units .............................................. 32

15 Siting .................................................................................................... 33

16 Electrical connection ............................................................................ 35

17 Commissioning .................................................................................... 37

18 Maintenance shutdown ........................................................................ 46

19 Hygiene checklist ................................................................................. 47

20 Maintenance ......................................................................................... 48

21 Notes .................................................................................................... 51

2 3064361_201811

1 General / Safety information

General information These installation and maintenance instructions only apply to WOLF CRL / CRL

evo max ventilation units. Authorised personnel should read these instructions

before any commissioning or maintenance work. Comply with the specications

in this document. Installation, commissioning and maintenance work must only
be carried out by trained personnel.

These instructions should be considered an integral part of the unit
supplied, and should always be easily accessible.

Failure to observe these installation and maintenance instructions voids any
WOLF GmbH warranty.

Reference symbols The following reference symbols are used in these instructions. This

important information concerns personal and operational safety as well
as operational reliability.

“Safety information" identies instructions that must be observed to
the letter, to prevent risks and injuries to individuals and damage to the

appliance.

Danger through 'live' electrical components.
Please note: Turn off the ON/OFF switch before removing the casing.

Never touch electrical components or contacts when the ON/OFF switch

is in the ON position. There is a danger of electrocution, resulting in a

risk to health or death.

The main terminals are 'live', even when the ON/OFF switch is in the OFF

position.

Note

Safety information In addition to installation and maintenance instructions, there are notes attached

"Please note" designates technical instructions which you must observe
to prevent the unit malfunctioning or being damaged.

to the unit in the form of labels. These must also be observed.

Only qualied and trained personnel may be appointed for the installation,

commissioning, maintenance and operation of the unit.

Only qualied electricians are permitted to work on the electrical system.

VDE regulations [or local regulations] and those of your local power supply
utility are applicable to electrical installation work.
Only operate the unit within its output range, which is stated in the technical
documentation supplied by WOLF.
Only operate the appliance if it is in perfect technical condition. Any faults or
damage that impact or might impact upon the safety or correct function of the

unit must be remedied immediately by qualied personnel.

Only replace faulty components and equipment with original WOLF spare parts.

Note

It may only be used for handling air. This air must not contain any harmful,

combustible, explosive, aggressive, corrosive or otherwise dangerous

substances, as these would be distributed throughout the duct system

or building, where they could cause a risk to the health of, or even kill
the occupants, animals or plants living there.

33064361_201811

1 General / safety information

In accordance with DIN 1886, tools are required to open the unit. Wait for the
fan to reach standstill (2 minutes wait). When the doors are opened, negative
pressure may draw in loose objects, which could destroy the fan or even cause
a risk to life if items of clothing are drawn in.

Electrical connection Make the electrical connection in accordance with local regulations.

Once electrical connection work is complete, the installation must be subjected
to a safety test in accordance with VDE 0701-0702 and VDE 0700 part 500,
as otherwise there would be a risk of electric shock that could result in injury
or death.

Before working on the unit, shut it down via the isolator.

Even when the unit has been shut down, voltage will still be present at terminals
and connections of the EC fans. This means there is a risk of electric shock
that could result in injury or death.

Do not touch the EC fans for ve minutes after disconnecting the power across

all poles.

Intended use Wolf CRL / CRL evo max ventilation units are designed to heat and lter normal

air. Max. Max. air intake temperature: +40 °C. The use of these units in wet
rooms or rooms with explosive atmospheres is not permissible. Handling very
dusty or aggressive media is not permissible.

Any onsite modication or improper use of the unit is not permissible and WOLF

GmbH accepts no liability for any damage caused as a result.
Ventilation units intended for internal installation must be placed in rooms that
meet the requirements of VDI 2050 (VDI 2050, Requirements for technical
equipment rooms - Planning and execution).

Fire The unit does not present a direct risk of re.

The small numbers of seals tted inside the unit can burn away if subjected to
external inuences. Wear respiratory equipment if you ght a re. The usual

extinguishing agents such as water, extinguishing foam or extinguishing powder

can be used to extinguish res. As there are only a small number of ammable
seals, the level of pollutants that could be released in a re is minimal.

Warnings

Recommended temperatures The ventilation unit is designed for air intake temperatures between -20 °C

Other technical documents - Operating instructions WRS-K

Removal and disabling of safety and monitoring equipment is prohibited.
The system must only be operated if it is in perfect technical condition. Ensure

that any faults or damage that may impact on safety are rectied immediately.

and +40 °C. For safety reasons, the room temperature in technical equipment
rooms must not fall below 5 °C (risk of frost) or exceed 40 °C. The unit should
be operated in room conditions of between 22 °C and 28 °C at approx. 55 %
relative humidity.

- MicroMax 370W TWHE control unit operating instructions

- Wiring diagram

- Conguration assistant WRS-K

- Commissioning report / parameter list

4 3064361_201811

2 Standards, regulations / disposal

Standards and regulations - Machinery Directive 2006/42/EC

- Low Voltage Directive 2014/35/EU

- EMC Directive 2014/30/EU

- ErP Directive 2009/125/EC

- EN ISO 12100 Safety of machinery; general principles

- DIN EN ISO 13857: Safety of machinery; safety distances

- DIN EN 349 Safety of machinery; minimum

- DIN EN 953 Safety of machinery; Guards

- DIN EN 1886 Ventilation for buildings; central air-

- DIN ISO 1940-1 Mechanical vibration; balance quality

- VDMA 24167 Fans; safety requirements

- DIN EN 60204-1 Safety of machinery - Electrical

for design

clearances

handling units

requirements

equipment of machines

- DIN EN 60730 Automatic electrical controls

- DIN EN 61000 -6-2+3 Electromagnetic Compatibility

In addition, ÖVE regulations and the local building code apply to Austria.

The following standards and regulations apply to installation and operation:

- DIN EN 50106 (VDE 0700-500) Safety of electrical appliances; tests

- DIN VDE 0100 Regulations regarding the installation of
high voltage systems up to 1000 V

- DIN EN 50110-1 (VDE 0105-1) Operation of electrical installations

- DIN VDE 0105-100 Operation of electrical systems; general
stipulations

Disposal and recycling When the unit reaches the end of its service life, it must only be dismantled by

qualied personnel. Before starting to dismantle the unit, disconnect the power
supply. Power cables must be removed by qualied electricians. Sort and dispose

of metal and plastic parts according to material types and in compliance with
local regulations. Dispose of electrical and electronic components as electrical
waste.

53064361_201811

3 CRL-iD unit layout

CRL-iD Comfort thermal wheel heat exchanger ventilation unit for internal installation with vertical/

horizontal duct connection (example provided is CRL-iD-3500 with boost damper)

1 Outdoor air damper with servomotor
2 Filter pre-dryer (accessory)
3 Differential pressure switch for lter monitoring
4 EC fan, extract air
5 Ventilation air damper with servomotor
6 Repair switch
7 BMK programming unit
8 control panel
9 TWHE control unit

10 Compact lter, extract air

6 3064361_201811

11 Differential pressure switch for lter monitoring
12 Electric reheating coil available for

CRL-1300/-2500/-3500 (accessory)
13 EC fan, supply air
14 Adjustable feet
15 Boost damper with servomotor optional

for CRL-1300/-2500/-3500
16 TWHE thermal wheel heat exchanger
17 Compact lter, outdoor air

3 CRL-iD unit layout

1 3

L2*

128

122

2

1 Outdoor air
2 Exhaust air

4

L1

L2

3 Supply air

L1

TWHE with boost

damper

4 Extract air

Total

H

H

170

T

L

Type CRL-iD-1300 CRL-iD-2500 CRL-iD-3500

Unit layout Single piece Single piece Three piece
Length L mm 1525 / 1525* 1626 / 1626* 1626 / 1830*
Length L1 mm - - 508
Length L2 (rotor part) mm - - 610 / 814*
Depth D (incl. locks) mm 750 950 1155
Total height mm 1315 1722 1722
Height H mm 1017 1424 1424
Foot height mm 170 170 170
Control unit height mm 122 122 122
Duct connection dimensions,

horizontal air routing
Duct connection dimensions, vertical

air routing

mm int. 612x409 Intl 815x612 Intl 1019x612

mm Intl 596x307 Intl799x307 Intl1019x408

470 / 490*

Weight kg 266 / 266* 381 / 381*

(130+210+130)

(130+230+130)*

Nominal flow rate m³/h 1300 at 460 Pa (ext.) 2500 at 600 Pa (ext.) 3500 at 980 Pa (ext.)

* with boost damper

Type CRL-iD-4800 CRL-iD-6200 CRL-iD-9000

Unit layout Three piece Three piece Three piece
Length L mm 1728 1932 2136
Length L1 mm 610 712 814
Length L2 (rotor part) mm 508 508 508
Depth D (incl. locks) mm 1360 1665 2070
Total height mm 1722 1722 1925
Height H mm 1424 1424 1627
Foot height mm 170 170 170
Control unit height mm 122 122 122
Duct connection dimensions,

horizontal air routing
Duct connection dimensions, vertical

air routing

Weight kg

mm intl 1222 x 612 intl 1527 x 612 intl 1934 x 714

mm intl 1222 x 510 intl 1527 x 612 intl 1934 x 714

590

(180+230+180)

715

(220+275+220)

845

(275+295+275)

Nominal flow rate m³/h 4800 at 450 Pa (ext.) 6200 at 680 Pa (ext.) 9000 at 1000 Pa (ext.)

73064361_201811

4 CRL-iD appliance versions

Access side in supply air direction, left Access side in supply air direction, right

1

1

1

1

1

For CRL-1300/-2500/-3500, these versions are available with a boost damper.

8 3064361_201811

5 CRL-iH unit layout

CRL-iH Comfort thermal wheel heat exchanger ventilation unit for internal installation with horizontal duct

connection (example provided is CRL-iH-3500 with boost damper)

1 Outdoor air damper with servomotor
2 Filter pre-dryer (accessory)
3 Differential pressure switch for lter monitoring
4 EC fan, extract air
5 Ventilation air damper with servomotor
6 Repair switch
7 BMK programming unit
8 control panel
9 TWHE control unit

10 Compact lter, extract air

11 Differential pressure switch for lter monitoring
12 Electric reheating coil available for

CRL-1300/-2500/-3500 (accessory)
13 EC fan, supply air
14 Adjustable feet
15 Boost damper with servomotor optional

for CRL-1300/-2500/-3500
16 TWHE thermal wheel heat exchanger
17 Compact lter, outdoor air

93064361_201811

5 CRL-iH unit layout

L2*

4

2

1

3

H

122

Total

H

L1

L2

L1

170

T

L

TWHE with boost

1 Outdoor air
2 Exhaust air

3 Supply air
4 Extract air

damper

Type CRL-iH-1300 CRL-iH-2500 CRL-iH-3500

Unit layout Single piece Single piece Three piece
Length L mm 1525 / 1525* 1626 / 1626* 1626 / 1830*
Length L1 mm - - 508
Length L2 (rotor part) mm - - 610 / 814*
Depth D (incl. locks) mm 750 950 1155
Total height mm 1309 1716 1716
Height H mm 1017 1424 1424
Foot height mm 170 170 170
Control unit height mm 122 122 122
Duct connection dimensions,

horizontal air routing

mm int. 612x409 Intl 815x612 Intl 1019x612

470 / 490*

Weight kg

266 / 266*

381 / 381*

(130+210+130)

(130+230+130)*

Nominal flow rate m³/h 1300 at 460 Pa (ext.) 2500 at 600 Pa (ext.) 3500 at 980 Pa (ext.)

* with boost damper

Type CRL-iH-4800 CRL-iH-6200 CRL-iH-9000

Unit layout Three piece Three piece Three piece
Length L mm 1728 1932 2136
Length L1 mm 610 712 814
Length L2 (rotor part) mm 508 508 508
Depth D (incl. locks) mm 1360 1665 2070
Total height mm 1716 1716 1919
Height H mm 1424 1424 1627
Foot height mm 170 170 170
Control unit height mm 122 122 122
Duct connection dimensions,

horizontal air routing

Weight kg

mm intl 1222 x 612 intl 1527 x 612 intl 1934 x 714

590

(180+230+180)

715

(220+275+220)

845

(275+295+275)

Nominal flow rate m³/h 4800 at 450Pa (ext.) 6200 at 680Pa (ext.) 9000 at 1000Pa (ext.)

10 3064361_201811

11

13

17

5.1 CRL-iH evo max unit layout

CRL-iH evo max Comfort thermal wheel heat exchanger ventilation unit for internal installation with

horizontal duct connection (example provided is CRL-iH-11000 evo max with boost
damper)

4

5

6 7

8

9

3

10

2

12

1

1 Outdoor air damper with servomotor
2 Differential pressure switch for lter monitoring
3 Ventilation air damper with servomotor
4 EC fan, extract air
5 TWHE thermal wheel heat exchanger
6 Repair switch
7 Panel for onsite cable entry
8 Differential pressure switch for lter monitoring
9 control panel

18

16

10 Extract air lter
11 BMK programming unit
12 EC fan, supply air
13 Base frame
14 Test connector for ow rate calculation
15 Boost damper with servomotor (optional)
16 Control TWHE
17 Outdoor air lter
18 Filter pre-dryer incl. control cabinet (accessory)

15

14

113064361_201811

5 CRL-iH evo max unit layout

H

1

1

4

H

H

Total

H

2

2

1 Outdoor air
2 Exhaust air

3

L1

L2

L3

3 Supply air
4 Extract air

250

L

T

Type CRL-iH-11000 evo max CRL-iH-13500 evo max

Unit layout Five piece Five piece
Length L mm 2950 / 2950* 2950 / 2950*
Length L1 mm 1424 1424
Length L2 (rotor part) mm 814 / 814* 814 / 814*
Length L3 mm 712 712
Depth D (incl. locks) mm 1970 1970
Total height mm 2284 2894
Height H mm 2034 2644
Internal frame (optional) mm 250 250
Height H1 / H2 mm 1017 1322
Duct connection dimensions,

horizontal air routing

Weight of standard unit kg

mm Intl 1832x917 Intl 1832x1222

1370

(590+460+320)

1550

(660+490+400)
Weight of base frame kg 60 90
Nominal flow rate m³/h 11000 at 1000 Pa (ext.) 13500 at 800Pa (ext.)

* with boost damper

Type CRL-iH-16500 evo max CRL-iH-19500 evo max

Unit layout Five piece Five piece
Length L mm 2950 / 2950* 2950 / 2950*
Length L1 mm 1424 1424
Length L2 (rotor part) mm 814 / 814* 814 / 814*
Length L3

712 712

Depth D (incl. locks) mm 2275 2580
Total height mm 2894 2894
Height H mm 2644 2644

Internal frame (optional) mm 250 250
Height H1 / H2 mm 1322 1322

Duct connection dimensions,
horizontal air routing

Weight of standard unit kg

mm Intl 2137x1222 Intl 2442x1222

1790

(710+630+450)

2020

(790+720+510)
Weight of base frame kg 110 120
Nominal flow rate m³/h 16500 at 750 Pa (ext.) 19500 at 950 Pa (ext.)

* with boost damper

12 3064361_201811

6 CRL-iH appliance versions

Access side in supply air direction, left Access side in supply air direction, right

1, 2

1, 2

1, 2

1, 2

1For CRL-iH-1300/-2500/-3500, these versions are available with a boost damper.
2CRL-IH evo max types are available in these versions

133064361_201811

7 CRL-iDH unit layout

CRL-iDH Comfort thermal wheel heat exchanger ventilation unit energy efcient and comfortable

ventilation with vertical/horizontal duct connection (example provided is CRL-iDH-3500 with
boost damper)

1 Outdoor air damper with servomotor
2 Filter pre-dryer (accessory)
3 Differential pressure switch for lter monitoring
4 EC fan, extract air
5 Ventilation air damper with servomotor
6 Repair switch
7 BMK programming unit
8 control panel
9 TWHE control unit

14 3064361_201811

10 Compact lter, extract air
11 Differential pressure switch for lter monitoring
12 Electric reheating coil available for

CRL-1300/-2500/-3500 (accessory)
13 EC fan, supply air
14 Adjustable feet
15 Boost damper with servomotor optional for

CRL-1300/-2500/-3500
16 TWHE thermal wheel heat exchanger
17 Compact lter, outdoor air

7 CRL-iDH unit layout

L1

L2

L1

1

L2*

128

3

H

H

H

2

4

Total

170

T

L

122

1 Outdoor air
2 Exhaust air

3 Supply air
4 Extract air

TWHE with boost

damper

Type CRL-iDH-1300 CRL-iDH-2500 CRL-iDH-3500

Unit layout Single piece Single piece Three piece
Length L mm 1525 / 1525* 1626 / 1626* 1626 / 1830*
Length L1 mm - - 508
Length L2 (rotor part) mm - - 610 / 814*
Depth D (incl. locks) mm 750 950 1155
Total height mm 1315 1722 1722
Height H mm 1017 1424 1424
Foot height mm 170 170 170
Control unit height mm 122 122 122
Duct connection dimensions,

horizontal air routing
Duct connection dimensions, vertical

air routing

mm int. 612x409 Intl 815x612 Intl 1019x612

mm Intl 596x307 Intl799x307 Intl1019x408

470 / 490*

Weight kg 266 / 266* 381 / 381*

(130+210+130)

(130+230+130)*

Nominal flow rate m³/h 1300 at 460 Pa (ext.) 2500 at 600 Pa (ext.) 3500 at 980 Pa (ext.)

* with boost damper

Type CRL-iDH-4800 CRL-iDH-6200 CRL-iDH-9000

Unit layout Three piece Three piece Three piece
Length L mm 1728 1932 2136
Length L1 mm 610 712 814
Length L2 (rotor part) mm 508 508 508
Depth D (incl. locks) mm 1360 1665 2070
Total height mm 1722 1722 1925
Height H mm 1424 1424 1627
Foot height mm 170 170 170
Control unit height mm 122 122 122
Duct connection dimensions,

horizontal air routing
Duct connection dimensions, vertical

air routing

Weight kg

mm intl 1222 x 612 intl 1527 x 612 intl 1934 x 714

mm intl 1222 x 510 intl 1527 x 612 intl 1934 x 714

590

(180 + 230 + 180)

715

(220 + 275 + 220)

845

(275 + 295 + 275)

Nominal flow rate m³/h 4800 at 450 Pa (ext.) 6200 at 680 Pa (ext.) 9000 at 1000 Pa (ext.)

153064361_201811

8 CRL-iDH appliance versions

Access side in supply air direction, left Access side in supply air direction, right

1

1

1

1

Other versions available; see the WOLF sizing program.

1

For CRL-1300/-2500/-3500, these versions are available with a rapid heat-up damper.

16 3064361_201811

9 CRL-A unit layout

CRL-A Comfort thermal wheel heat exchanger ventilation unit for external installation (weather-resistant)

with horizontal duct connection (example provided is CRL-A-3500 with boost damper)

1 Outdoor air damper with servomotor
2 Filter pre-dryer (accessory)
3 Differential pressure switch for lter monitoring
4 EC fan, extract air
5 Ventilation air damper with servomotor
6 Repair switch
7 control panel
8 TWHE control unit
9 Compact lter, extract air

10 Differential pressure switch for lter monitoring

11 Electric reheating coil available for

CRL-1300/-2500/-3500 (accessory)

12 EC fan, supply air
13 Base frame
14 Boost damper with servomotor optional for

CRL-1300/-2500/-3500

15 TWHE thermal wheel heat exchanger
16 Compact lter, outdoor air
17 Connectors for DN 50 trap

173064361_201811

9 CRL-A unit layout

T

1

4

Total

2

H

H

1

H

1

L

T

L

1

L

2

1

3

1 Outdoor air
2 Exhaust air
3 Supply air
4 Extract air

L

Type CRL-A-1300 CRL-A-2500 CRL-A-3500

Unit layout Single piece Single piece Three piece
Length L mm 1525 / 1525* 1626 / 1626* 1626 / 1830*
Length L1 mm - - 508
Length L2 (rotor part) mm - - 610 / 814*
Depth D mm 712 915 1118
Total depth T1 mm 812 1015 1218
Total height mm 1457 1864 1864
Height H mm 1017 1424 1424
Base frame H1 mm 305 305 305
Duct connection dimensions,

horizontal air routing
Weight kg
Nominal flow rate m³/h 1300 at 460 Pa (ext.) 2500 at 600 Pa (ext.) 3500 at 980 Pa (ext.)

* with boost damper

mm int. 612x409 Intl 815x612 Intl 1019x612

320 / 320*

445 /445* 530 / 550*

Type CRL-A-4800 CRL-A-6200 CRL-A-9000

Unit layout Three piece Three piece Three piece
Length L mm 1728 1932 2136
Length L1 mm 610 712 814
Length L2 (rotor part) mm 508 508 508
Depth D mm 1322 1626 2034
Total depth T1 mm 1422 1726 2134
Total height mm 1864 1864 2067
Height H mm 1424 1424 1627
Base frame H1 mm 305 305 305
Duct connection dimensions,

horizontal air routing
Weight kg 660 800 960
Nominal flow rate m³/h 4800 at 450Pa (ext.) 6200 at 680Pa (ext.) 9000 at 1000Pa (ext.)

18 3064361_201811

mm intl 1222 x 612 intl 1527 x 612 intl 1934 x 714

9.1 CRL-A evo max unit layout

15

19

3

6

1

20

21

CRL-A evo max Comfort thermal wheel heat exchanger ventilation unit for external installation

(weather-resistant) with horizontal duct connection (example provided is
CRL-A-11000 with boost damper)

7

5

4

2

8 9 10

11

12

13

14

1 Condensate pan
2 Intake hood with mist eliminator
3 Outdoor air damper with servomotor
4 Differential pressure switch for lter monitoring
5 Intake hood
6 Ventilation air damper with servomotor
7 EC fan, extract air
8 TWHE thermal wheel heat exchanger
9 Repair switch

10 Panel for onsite cable bushing

18

11 Differential pressure switch for lter monitoring
12 control panel
13 Extract air lter
14 EC fan, supply air
15 Base frame
16 Test connector for ow rate calculation
17 Boost damper with servomotor (optional)
18 TWHE control unit
19 Outdoor air lter
20 Filter pre-dryer incl. control cabinet (accessory)
21 Connectors for R 1

1/4

17

trap

16

193064361_201811

9 CRL-A evo max unit layout

T

1

2

4

H

Total

3

1

300

L1

1 Outdoor air
2 Exhaust air

L2

3 Supply air
4 Extract air

L3

T L

Type CRL-A-11000 evo max CRL-A-13500 evo max

Unit layout Five piece Five piece
Length L mm 2950 / 2950* 2950 / 2950*
Length L1 mm 1424 1424
Length L2 (rotor part) mm 814 / 814* 814 / 814*
Length L3 mm 712 712
Depth D mm 1932 1932
Depth T1 (incl. roof overhang) mm 2032 2032
H1 / H2 mm 1017 1322
Total height mm 2214 2824
Height H mm 2034 2644
Base frame height mm 180 180
Duct connection dimensions,

horizontal air routing

Weight of standard unit kg

mm Intl 1832x917 Intl 1832x1222

1520

(710+470+340)

1720

(810+510+400)
Weight of base frame kg 100 100
Nominal flow rate m³/h 11000 at 1000 Pa (ext.) 13500 at 800 Pa (ext.)

* with boost damper

180

H

1

H

H

2

Type CRL-A-16500 evo max CRL-A-19500 evo max

Unit layout Five piece Five piece
Length L mm 2950 / 2950* 2950 / 2950*
Length L1 mm 1424 1424
Length L2 (rotor part) mm 814 / 814* 814 / 814*
Length L3 mm 712 712
Depth D mm 2237 2542
Depth T1 (incl. roof overhang) mm 2337 2642
H1 / H2 mm 1322 1322
Total height mm 2824 2824
Height H mm 2644 2644
Base frame height mm 180 180
Duct connection dimensions,

horizontal air routing

Weight of standard unit kg

mm Intl 2137x1222 Intl 2442x1222

1990

(890+640+460)

2260

(990+750+520)
Weight of base frame kg 110 120
Nominal flow rate m³/h 16500 at 750 Pa (ext.) 19500 at 950 Pa (ext.)

* with boost damper

20 3064361_201811

10 CRL-A appliance versions

ZUL/
SUP

ABL/
ETA

AUL/
ODA

FOL/
EHA

-L1

ABL/
ETA

ZUL/
SUP

FOL/
EHA

AUL/
ODA

-L3

ABL/
ETA

ZUL/
SUP

FOL/
EHA

AUL/
ODA

-L5

ABL/
ETA

ZUL/
SUP

FOL/
EHA

AUL/
ODA

-L4

ZUL/
SUP

ABL/
ETA

AUL/
ODA

FOL/
EHA

FOL/
EHA

AUL/
ODA

ABL/
ETA

ZUL/
SUP

FOL/
EHA

AUL/
ODA

ABL/
ETA

ZUL/
SUP

FOL/
EHA

AUL/
ODA

ABL/
ETA

ZUL/
SUP

-R1

-R3

-R5

-R4

Access side in supply air direction, left Access side in supply air direction, right

1, 2 1, 2

3 3

1

For CRL-A-1300/-2500/-3500, these versions are available with a boost damper.

2

CRL-A evo max types are available in these versions

3

These versions are only available for CRL-A evo max units

213064361_201811

11 Delivery / Handling

Delivered condition

Delivery CRL / CRL evo max ventilation units are supplied in packaging that protects them

from dirt and damage. Upon receipt of the goods, check the unit for possible
transport damage. If there is any damage or even a suspicion of damage, the
recipient must indicate this on the consignment note and have it countersigned
by the haulier. The recipient of the goods must notify WOLF of the relevant
facts without delay.
Dispose of the transport packaging in accordance with local regulations.

Storage Only store the ventilation unit in dry rooms at an ambient temperature between

-25 °C and +55 °C. If it is stored for a long time, ensure that all apertures are
sealed against air and water ingress.

General handling information

Units are supplied fully assembled and fully wired.
Only transport units in their installation position.
Never tilt the unit when transporting it through doorways or in narrow stairwells
(lifts).
Failure to observe these instructions can damage internal components
irreparably.

22 3064361_201811

11 Delivery/Handling

Transport external units

Transport ropes with a minimum length equivalent to the eye bolt distance L
must be used when transporting external CRL units with eye bolts. The same
applies to the individual transport units of the CRL evo max units.
External CRL evo max units may only be lifted as an entire unit with a lifting
beam when pulling equally and vertically on all available eye bolts.

Lifting beam

90° 90°

max. 60°

L

Min. L

113,61 mm

Transport Internal units

The 3500, 4800, 6200 and 9000 versions of the CRL internal units can be split
into three sections for easier handling. (Delivered as a transport unit)
CRL evo max internal units are delivered in 3 transport units as standard. The
procedure for connecting the units together is described in Item 13.
Unit connectors, hexagon bolts and nuts are used to connect the parts together.
Electric lines and control cables can be disconnected and connected again quite
simply by means of plug-in connections in the control unit casing.

Control unit cover

Unit connector

233064361_201811

12 Unit splitting for handling purposes - CRL

Disassembly of internal units

CRL-3500/-4800/-6200/-9000

Undo the unit connector bolts with an SW13 spanner to dismantle the unit.

Remove lters before dismantling in order to reach the rear unit connectors.

It may be necessary to remove the dampers in order to gain better access to
the rear unit connectors in this area.

Remove damper

Unit connector

Remove lter

xing screws

Fig. 1 Fig. 2 Fig. 3

Assembling unit sections

Before dismantling the unit, disconnect the wiring harnesses from the control

unit.

- Remove control unit cover

- Undo cable plug-in connections (g. 1)

- Pull wiring harnesses into the slant of the thermal wheel heat exchanger

(g. 2)

- Pull wiring harnesses left and right into the external parts (g. 3)

Before assembling the individual unit sections, ensure that they are

pushed together completely.

The assembly of cube components can be simplied by using lashing straps.

Position unit sections next to each other and pull them together with lashing
straps. Then screw the components together via the unit connectors. In order
to ensure a secure threaded connection, screw the hexagon bolts manually
into the captive nuts during assembly. Only then should they be tightened, for
example, with an electric screwdriver.
Subsequently, route the wiring harnesses back to the control unit and plug them

in (observe the cable designations)!

24 3064361_201811

12 Unit splitting for handling purposes - CRL

1 2

3 4

253064361_201811

12 Unit splitting for handling purposes - CRL

1 2

3 4

26 3064361_201811

12 Unit splitting for handling purposes - CRL

1 2

3 4

273064361_201811

12 Unit splitting for handling purposes - CRL

1 2

3 4

28 3064361_201811

13 Assembly - CRL evo max

A1

4x

293064361_201811

13 Assembly - CRL evo max

B1

4x

B1

A1

4x

30 3064361_201811

13 Assembly - CRL evo max

313064361_201811

14 Installation information for external units

Weatherproof units must not be used for any load-bearing building
functions or as a replacement for any part of the roof

(VDI 3803 5.1 / DIN EN 13053 6.2).

A level, horizontal load-bearing surface is required for siting and installing the
external units.

Base frames must be levelled horizontally (check with a spirit level).

To prevent the inspection doors from jamming, the entire base frame must sit
on the foundation; point loads are not permissible.

To prevent structure-borne noise transmission from the CRL to the building,
insert a permanently flexible intermediate layer between the foundation and
the base frame. This intermediate layer should preferably take the form of
insulation strips, fitted lengthwise below the base frame.

Insulation
(if required)

Insulation
against
structure­borne
noise

Insulation against
structure-borne
noise

Roof seal

The WOLF base frame and its integration into the roof membrane must be
insulated onsite.

In the case of elevated positioning (CRL on onsite framework), the CRL must
be secured against wind load.

32 3064361_201811

Minimum clearance between

outdoor air intake and exhaust air
aperture to prevent an "air short
circuit" (DIN 13779)

15 Siting

Outdoor

air

Exhaust

air

Outdoor

air

Exhaust

air

Extract

air

Supply

air

Extract

air

Supply

air

Supply air

Extract

air

Outdoor

air

Exhaust

air

Functional illustration of air inow:

CRL-iD

Exhaust air

Outdoor air

Functional illustration of air inow:

CRL-iH

Extract air

Supply air

Exhaust air

Outdoor air

Extract air

Supply air

333064361_201811

15 Siting

Installation location CRL
Indoor unit

Clearance for opening the
inspection doors

Clearance for changing the
thermal wheel heat exchanger

Clearance for air duct
connections above the unit

* Unit with boost damper

Duct connections (ons-

ite)

The installation location must be level and have adequate load bearing
capacity (see data sheets for individual unit weights). Level the unit
horizontally (align using the adjustable feet). The installation site must be
able to bear the load of the ventilation unit without vibrations on a long term

basis. Provide sufcient space at the front of the unit for maintenance work.
Site the unit in a room that is free from the risk of frost!

CRL 1300 2500 3500 4800 6200 9000 11000 13500 16500 19500

mm 700 700

700 /
900*

700 800 900 900 900 900 900

mm 800 1000 1200 1400 1700 2100 2000 2000 2300 2600

mm 500 500 600 700 800 900 - - - -

The unit connectors are rectangular.

Round ducts can be connected directly to the connectors using an adaptor
insulating collar (from square to round).
Insulate the ducts in accordance with applicable regulations and industry
standards.

Air duct connections are identied

with the following labels:

Hydraulic connection

Heating coil: Hydraulic

connection
example

Adaptor insulating collar for round duct connection on internal unit with vertical
and horizontal duct connection (accessory)

Outdoor air:

Extract air:

AUL / ODA

AUL / ODA

6801059 48/10

ABL /ETA

ABL /ETA

6801061 48/10

Exhaust air:

6801062 48/10

Supply air:

6801060 48/10

FOL/EHA

FOL/EHA

ZUL/SUP

ZUL/SUP

Admixing circuit

Benets: good control

characteristics, low risk of
freezing

ϑ1 =ϑ2

Cooling coil: Hydraulic

connection
example

Diverting circuit

Benets: constant ow

temperature in cooling coil,

good dehumidication even at

partial load

Note: Positioning valves close to the heat exchanger improves the control characteristics

34 3064361_201811

16 Electrical connection

Electrical connection The electrical connection may only be made by electricians in accordance with

local regulations.

Inlet for onsite cables

CRL

When connecting the control unit and control accessories, observe the instructions
and wiring diagrams provided.

Once electrical connection work is complete, the installation must be subjected
to a safety test in accordance with VDE 0701-0702 and VDE 0700 part 500,
as otherwise there would be a risk of electric shock that could result in injury
or death.

Before working on the unit, shut it down via the isolator.

The control panel has cable entries for connecting the onsite cables.

Entry for
onsite cables

CRL evo max

Standard units without

Size

CRL-1300 3 x 1.5 mm² 16 A 5 x 1.5 mm² 10 A

CRL-2500 5 x 1.5 mm² 16 A 5 x 2.5 mm² 20 A

CRL-3500 5 x 2.5 mm² 20 A 5 x 6.0 mm² 35 A

CRL-4800 5 x 2.5 mm² 20 A - -

CRL-6200 5 x 4.0 mm². 25 A - -

CRL-9000 5 x 6.0 mm² 35 A - -

CRL-11000 5 x 4.0 mm². 25 A - -

CRL-13500 5 x 6.0 mm² 35 A - -

CRL-16500 5 x 6.0 mm² 35 A - -

CRL-19500 5 x 10 mm². 50 A - -

Integral Elec. heating coil

Power cable

Onsite fuse/

MCB

Standard units with

Integral Elec. heating coil

Power cable

Onsite fuse/

MCB

Even when the unit has been shut down, voltage will still be present at terminals
and connections of the EC fans. This means there is a risk of electric shock
that could result in injury or death.

Do not touch the EC fans for ve minutes after disconnecting the power across

all poles.

Use a rubber mat if working on the unit when it is electrically charged.
Only use cables that meet local wiring regulations with regard to voltage, current,

insulation material, load etc. Always t an earth conductor.

RCDs

Only AC/DC-sensitive fault current safety devices, type B, with 300 mA are

permissible. There is no personal safety protection if the unit is operated with
RCDs.

Regularly check the perfect function of all electrical equipment.

Observe the specied electrical fuse/MCB protection ratings.
Any damage or loss resulting from technical modications to WOLF control

units is excluded from our warranty.

353064361_201811

16 Electrical connection

Size Rated voltage

CRL-1300

CRL-2500

CRL-3500

CRL-4800

CRL-6200

CRL-9000

CRL-11000

CRL-13500

1 x 230V

(50/60Hz)

3 x 400V

(50/60Hz)

3 x 400V

(50/60Hz)

3 x 400V

(50/60Hz)

3 x 400V

(50/60Hz)

3 x 400V

(50/60Hz)

3 x 400V

(50/60Hz)

3 x 400V

(50/60Hz)

max. Fan power

consumption

1.0kW 4.6A 3080 rpm IP55 / Iso F

2.1kW 3.2A 3400 rpm IP55 / Iso F

5.0kW 8.0A 2970 rpm IP 54 / Iso F

3.4kW 5.2A 2600 rpm IP 54 / Iso F

6.0kW 9.2A 2550 rpm IP 54 / Iso F

11.0kW 17A 2200 rpm IP 54 / Iso F

11.4kW 18A 2250 rpm IP 54 / Iso F

14.4kW 23.2A 2260 rpm IP 54 / Iso F

max. Current

consumption

fans

Fan speed

IP rating /

protection class

CRL-16500

CRL-19500

3 x 400V

(50/60Hz)

3 x 400V

(50/60Hz)

13.8kW 21.2A 1910 rpm IP 54 / Iso F

21.6kW 34.4A 2130 rpm IP 54 / Iso F

36 3064361_201811

17 Commissioning

Commissioning regulations

Commissioning and maintenance work must only be carried out by trained
personnel.

Only work on the unit with it being at zero volt.

According to EN 50110-1, only qualied electricians may carry out the installation

and commissioning of the ventilation control unit and connected accessories.

Observe all local EMC regulations and all VDE regulations.

DIN VDE 0100 regulations regarding the installation of high voltage systems
up to 1000 V

DIN VDE 0105-100 Operation of electrical systems

Only original WOLF accessories may be used (electric coils, servomotors, etc.),
otherwise WOLF cannot accept any liability.

In addition, ÖVE regulations and the local building code apply to Austria.

Before commissioning, check whether the operating data on the type plate is

adhered to.

The unit must not be operated before all necessary safety equipment has been

tted and connected. Intake and discharge apertures must be connected to

ensure contact protection.

The unit must be level and safely secured.

Commissioning
Procedure

Commissioning must be carried out by authorised personnel (WOLF service).

Record the date of commissioning, e.g. in a log book.

In accordance with DIN 1886, tools are required to open the unit. Wait for the
fans to come to a complete standstill before opening the inspection doors. When
opening the doors, negative pressure may draw in loose objects, which could
damage the fan irreparably or even cause a risk to life if items of clothing are
drawn in. Use tools to tightly seal the doors before commissioning (unit tightness).

Connect the power cable and accessories in accordance with the wiring diagram
provided.

A high leakage current can be expected due to the EC motors. Ensure that a
secure earth connection is in place before connecting the power supply and
commencing commissioning.

If control voltage is present or a set speed is saved, the EC fans will restart
automatically after power failure.

- Switch ON the unit isolator.

- Wait until the BMK programming unit initialises and switches to display

mode.

- Select the required operating mode at the BMK; the system will start with

the preset parameters.

- To modify functions and parameters, see the installation and operating
instructions provided.

373064361_201811

17 Commissioning

Where the system is not commissioned by WOLF, check all inputs and outputs
for correct wiring and function.

- Frost protection function

- Fan rotational direction

- Outdoor air/extract air damper rotational direction

- Plausible sensor values (room sensor, supply air sensor, extract air sensor,
outdoor air sensor)

- Check motor currents

- Motor protection (thermal cut-outs / thermistors)

- Air ow monitoring

- Filter monitor

- Actuator, heating / cooling

- Heating circuit pump / cooling circuit pump

- As well as all other system-specic functions

The WOLF warranty will be void if the function test is not carried out

correctly.

Fans

Use tools to tightly seal the doors before commissioning (unit tightness),
otherwise there is a risk of motor overload.

Carry out air ow rate tests with the doors closed.
Route test hose connections out of the unit (see ow rate calculation).

Note

Changes are made via the BMK programming unit (see relevant operating

instructions).

Filter pre-dryer (accessory) To prevent the electric heating coil from switching off, never operate the CRL

below its minimum air ow rate.

Follow the relevant safety regulations for electric heating coils.
The electric heating coil must be protected from moisture and water.

The lter pre-dryer starts automatically at outside temperatures below 5 °C.

Type CRL 1300 2500 3500 4800 6200 9000

Recomm. Minimum air
volume

m³/h 600 1200 1800 2400 3100 4500

Type CRL evo max 11000 13500 16500 19500

Recomm. Minimum air
volume

38 3064361_201811

m³/h 5500 6500 8000 9500

17 Commissioning

Electric reheating coil (accessory) To prevent the electric heating coil from switching off, never operate the CRL

below its minimum air ow rate.

Follow the relevant safety regulations for electric heating coils.
The electric heating coil must be protected from moisture and water.

Type CRL 1300 2500 3500

Recomm. Minimum air
volume

Condensate pan Provide a trap for the condensate drain and route the condensate into the

sewerage system.
Protect the condensate drain from frost.
Fill the trap with water.

m³/h 600 1200 1800

Trap The effective height of the trap h (mm) must exceed the maximum underpressure

or overpressure at the condensate connector (1mm WC = 10Pa).

h = 1.5 x p (mmWC) + 50 mm (min.)

p = Under- or overpressure in mmWC according to appliance
design
50 mm (WC) = Reserve (imprecision in design, evaporation)

1.5 = Additional Safety factor

The trap drain line must not be connected directly to the public sewage system,
but rather must be able to run out freely. Vent longer drain lines to prevent
condensate backing up in the line (provide additional vent in trap drain line).

h

393064361_201811

17 Commissioning

Heat recovery function

with thermal wheel heat
exchanger

Layout and function of
the TWHE control unit

Rotor
control
unit

Rotor
motor

A rotating cylinder mass (rotor material corrosion-resistant aluminium alloy,

wound in corrugated and smooth layers) absorbs heat from the extract air ow

and transfers it to the outdoor air. The rotor mass is sealed by a circumferential
labyrinth seal. Output is controlled by varying the speed of the drive motor. Force
is transmitted from the motor to the rotor by a circumferential V-belt. There is
no need for frost protection, a defrosting device or air preheating.

The MicroMax 370W rotor control unit includes the following functions:

- Automatic interval mode

- Variable speed control

- Acceleration and deceleration ramp

- Motor brake on standstill

- Rotation monitor with rotation sensor

- Alarm relay

- Test switch

In principle, the thermal wheel heat exchanger is maintenance-free.
The rotational direction of the TWHE has no effect on heat recovery. When
the TWHE control unit is switched off, interval mode ensures further rotation

in order to prevent n soiling.

Function for mode

Quick heat-up
(optional for CRL-1300/-2500/-3500
and CRL evo max units)

100 % of the extract air ows over the rapid heat-up damper and is routed directly

back into the room. In order to achieve the required set room temperature as
quickly as possible, the air temperature is raised to a maximum via a reheating
coil.
In this operating mode, the ODA and EHA dampers are completely closed; the
ETA fan and heat recovery (TWHE) are not operational. The SUP fan is running

and delivers the required ow rate.

When the set room temperature has been achieved, the unit switches back
into standard control mode.

40 3064361_201811

17 Commissioning

Flow rate calculation

V = k √Dp

in [m³/h] and Dp

V

w

in [Pa]

w

CRL-1300 effective pressure

The ow rate is calculated using the effective pressure method. This involves

comparing the static pressure upstream of the inlet nozzle with the static
pressure in the inlet nozzle.

The ow rate can be calculated from the effective pressure Δp

w

(differential pressure of the two static pressures) using the following equation.

The doors must be closed to determine the correct ow rate. Guide the test

hoses over the test connectors towards the outside.

The fans used for the CRL-1300 have a k value of 76.

320.0

= 76 x √Dp

270.0

220.0

170.0

120.0

Effective pressure Δp [Pa]

70.0

V

w

20.0
450 550 650 750 850 950 1050 1150 1250 1350

Flow rate [m³/h]

Δp = effective pressure

(symbolic representation)

Δp [Pa] 43 62 85 111 140 173 209 249 293

[m³/h] 500 600 700 800 900 1000 1100 1200 1300

V

CRL-2500 effective pressure The fans used for the CRL-2500 have a k value of 77.

1110.0

1010.0

= 77 x √Dp

910.0

810.0

710.0

610.0

510.0

410.0

Effective pressure Δp [Pa]

310.0

210.0

110.0

850 1050 1250 1450 1650 1850 2050 2250 2450 2650

V

w

Flow rate [m³/h]

Δp = effective pressure

(symbolic representation)

Δp [Pa] 137 204 285 379 487 609 744 892 1054

[m³/h] 900 1100 1300 1500 1700 1900 2100 2300 2500

V

413064361_201811

1500 1700 1900 2100 2300 2500 2700 2900 3100 3300 3500 3700

2000 2500 3000 3500 4000 4500 5000

17 Commissioning

CRL-3500 effective pressure

Δp = effective pressure

(symbolic representation)

The fans used for the CRL-3500 have a k value of 121.

950.0

850.0

750.0

650.0

550.0

450.0

350.0

Effective pressure Δp [Pa]

250.0

150.0

V = 121 x √Dp

w

Flow rate [m³/h]

Δp [Pa] 197 247 301 361 427 498 574 656 744 837

[m³/h] 1700 1900 2100 2300 2500 2700 2900 3100 3300 3500

V

CRL-4800 effective pressure The fans used for the CRL-4800 have a k value of 148.

1160.0

1060.0

960.0

860.0

760.0

660.0

560.0

460.0

360.0

Effective pressure Δp [Pa]

260.0

160.0

V = 148 x √Dp

w

Flow rate [m³/h]

Δp = effective pressure

(symbolic representation)

Δp [Pa] 201 263 333 411 497 592 694 805 924 1052

[m³/h] 2100 2400 2700 3000 3800 3600 3900 4200 4500 4800

V

42 3064361_201811

17 Commissioning

CRL-6200 effective pressure The fans used for the CRL-6200 have a k value of 188.

1150.0

1050.0

950.0

850.0

750.0

650.0

550.0

450.0

Effective pressure Δp [Pa]

350.0

250.0

V = 188 x √Dp

3000 3500 4000 4500 5000 5500 6000 6500

w

Flow rate [m³/h]

Δp = effective pressure

(symbolic representation)

Δp [Pa] 290 347 409 476 548 625 707 795 887 985 1088

[m³/h] 3200 3500 3800 4100 4400 4700 5000 5300 5600 5900 6200

V

CRL-9000 effective pressure The fans used for the CRL-9000 have a k value of 240.

1500.0

1400.0

1300.0

1200.0

1100.0

1000.0

900.0

800.0

700.0

600.0

Effective pressure Δp [Pa]

500.0

400.0

300.0

200.0

3250 4500 5750 7000 8250 9500

V = 240 x √Dp

w

Flow rate [m³/h]

Δp = effective pressure

(symbolic representation)

Δp [Pa] 278 352 434 525 625 734 851 977 1111 1254 1406

[m³/h] 4000 4500 5000 5500 6000 6500 7000 7500 8000 8500 9000

V

433064361_201811

17 Commissioning

CRL-11000 evo max effective

pressure

Δp = effective pressure

(symbolic representation)

The fans used for the CRL-11000 have a k value of 281.

1600.0

1500.0

1400.0

1300.0

1200.0

1100.0

1000.0

900.0

800.0

700.0

600.0

Effective pressure Δp [Pa]

500.0

400.0

300.0

V = 281 x √Dp

5000 6000 7000 8000 9000 10000 11000 12000

w

Flow rate [m³/h]

Δp [Pa] 397 487 586 694 811 937 1072 1216 1370 1532

[m³/h] 5600 6200 6800 7400 8000 8600 9200 9800 10400 11000

V

CRL-13500 evo max effective

pressure

Δp = effective pressure

(symbolic representation)

The fans used for the CRL-13500 have a k value of 197.

1200.0

1100.0

1000.0

900.0

800.0

700.0

600.0

500.0

Effective pressure Δp [Pa]

400.0

300.0

200.0
6000 7000 8000 9000 10000 11000 12000 13000 14000

V = (197 x √Dpw) x 2

Flow rate [m³/h]

Δp [Pa] 294 362 438 522 612 710 815 928 1047 1174

[m³/h] 6750 7500 8250 9000 9750 10500 11250 12000 12750 13500

V

44 3064361_201811

150.0

250.0

350.0

450.0

550.0

650.0

750.0

850.0

950.0

7000 8250 9500 10750 12000 13250 14500 15750 17000

17 Commissioning

CRL-16500 evo max effective

pressure

Δp = effective pressure

(symbolic representation)

The fans used for the CRL-16500 have a k value of 281.

= (281 x √Dpw) x 2

V

Effective pressure Δp [Pa]

Flow rate [m³/h]

Δp [Pa] 178 229 286 349 419 495 577 666 761 862

[m³/h] 7500 8500 9500 10500 11500 12500 13500 14500 15500 16500

V

CRL-19500 evo max effective

pressure

Δp = effective pressure

(symbolic representation)

The fans used for the CRL-19500 have a k value of 252.

1600.0

1400.0

1200.0

1000.0

800.0

600.0

V = (252 x √Dpw) x 2

Effective pressure Δp [Pa]

400.0

200.0
8000 9500 11000 12500 14000 15500 17000 18500 20000

Flow rate [m³/h]

Δp [Pa] 268 355 455 567 691 828 977 1138 1311 1497

[m³/h] 8250 9500 10750 12000 13250 14500 15750 17000 18250 19500

V

Further settings for the
BMK and accessories

Further settings for the BMK programming unit can be found in the operating

instructions for the WRS-K control unit.
Accessories are installed in accordance with separate instruction manuals
which are provided with the relevant accessories.

453064361_201811

18 Maintenance shutdown

Decommissioning Before starting any maintenance work, switch OFF the isolator and safeguard

against unauthorised reconnection. If the isolator is switched back on
unintentionally, maintenance staff or others in the vicinity could be at risk from
rotating parts.
Wait for the fans to come to a complete standstill before opening the doors
(approx. 2 minutes). When the doors are opened, negative pressure may draw
in loose objects, which could destroy the fan or even cause a risk to life.

Even when the unit has been shut down, voltage will still be present at terminals
and connections of the EC fans. This means there is a risk of electric shock
that could result in injury or death.

- Do not touch the EC fans for ve minutes after disconnecting the power

across all poles.

- Use a rubber mat if working on the unit when it is electrically charged.

3

1

2

0

I

4

min

2

Open inspection doors with
quadrant key

6074238

Repair switch

46 3064361_201811

19 Hygiene checklist

Maintenance Regularly check that the ventilation unit is functioning correctly.

Replace the air lters in the unit at least once a year.

Wear a suitable dust mask when handling the air lters. Dispose of the air lters

in accordance with local regulations.

Hygiene checklist (extract from VDI 6022, sheet 1)

System commissioning: date__________________________

Activity Action

Hygiene inspection X

Outdoor air intakes

Check for contamination, damage and
corrosion

Structural units / unit casing

Check for contamination, damage and
corrosion on the air side

Check for condensation Clean X
Check casing for contamination, damage

and corrosion

Air vents

Check air vents, integral perforated plates,
wire mesh or sieves for contamination,
damage and corrosion (spot check)

Spot check lter eece Replace X
Spot check air vents with indoor air

induction and extract air intakes for
deposits

Air lters

Check for impermissible contamination,
damage (leaks) and odours

Longest lter replacement interval X

Air ducts

Check accessible air duct sections for
damage

Check inner air duct surface for
contamination, corrosion and condensation
at two or three representative points

Silencer

Check silencers for contamination, damage
and corrosion

Fan

Check for contamination, damage and
corrosion

Heat exchanger (including heat recovery)

Visual inspection of air/air plate heat
exchanger for contamination, damage and
corrosion

Heating coil: Check for contamination,
damage, corrosion and tightness

Check condensate pan for contamination,
corrosion, damage and tightness

Check the function of the drain and trap Clean and repair X

if required

Clean and repair X

Clean and repair X

Clean and repair X

Clean or replace X

Clean X

Changing the affected lters
Never operate the unit without lters!)

Repair X

Inspect the duct network at further
points and decide whether cleaning is
necessary (not only the visible areas)

Repair or replace; contact spotting if
required

Clean and repair X

Visual inspection X
Clean, remove if necessary (undo

spacer and clean out countercurrent heat
exchanger)

Clean and repair X

Clean and repair X

1

month3 months6 months

X

12

months

X

X

X

months

24

Repairs

Only qualied personnel may remove faults or repair damage. Replace faulty

components only with original WOLF spare parts.

473064361_201811

20 Maintenance

Fan motor unit Motor and bearing are maintenance-free.

If necessary, clean the impeller with a soapy solution.

Note

Electrical equipment - Regularly check the electrical equipment of the unit

Check that the test lead is seated rmly at the test connector on the inlet nozzle.

Loose seating can result in faulty measurements.

- Replace loose connections and faulty cables immediately

- Regularly check the earth conductor

Thermal wheel heat exchanger

(TWHE)

In normal operating conditions, the actuator and rotor bearing are maintenance­free.

Before starting any maintenance work, disconnect the power supply across

all poles and secure against reconnection, so that the persons charged with
maintenance work cannot be exposed to any risk of crushing or abrasion
injuries due to the rotor starting up suddenly if it is switched on unintentionally,
the automatic cleaning run commences or the rotor restarts automatically after
power failure.

Maintenance work (approx. every 3 months or more frequently if required)

- Check rotor cylinder mass for hygienic condition, damage, corrosion,
contamination and foreign bodies, and clean if required.

Compressed air (max. pressure 5 bar) or, for stubborn contamination, a

pressure washer (water only; no chemical additives) may be used for cleaning
the rotor cylinder mass.

When cleaning, ensure that the cleaning jet hits the cylinder mass at an angle

of 90°. Remove dirty water carefully.

- Check seals for hygienic condition, contamination and foreign bodies, and
clean if required.

- Check drive belt for wear and tension.
If necessary, have it adjusted or replaced by a contractor or the
manufacturer.

- Check rotor for imbalance and lateral trueness, and balance or realign it if
required.

- Check bearing for impermissible heating, vibration and bearing noise.
If necessary, have it replaced by a contractor or the manufacturer.

48 3064361_201811

20 Maintenance

electric coil (accessories) Check and clean at regular intervals.

Cleaning the electric coils:

- Vacuum, taking care not to bend the heating coils

- Blast with compressed air, max. 1 bar

Note

Air dampers Check the dampers for ease of movement. Never lubricate the dampers.

If the cleaning pressure is too high, there is a risk of irreparable mechanical
damage to the electric coils.
The electric coils must be protected from moisture and water.

This could destroy the plastic used and compromise the damper function.
To clean, wipe down with a soapy solution; otherwise maintenance-free.

Filter The lters are not renewable. They must be replaced when they are dirty, or

no later than after 12 months.

The lters can be removed from the unit once the inspection doors have been

opened (see spare parts).

The clamping levers must be opened (pulled) before pulling out the lters for

the CRL evo max units.

Never operate the CRL ventilation unit without lters!

493064361_201811

20 Maintenance

Servomotors on the dampers The motors are maintenance-free.

At regular intervals, check that the connection from the servomotor to the

damper drive is rmly seated.

Condensate pan Regularly check the condensate pan for possible soiling and clean if required

(see checklist).

Trap Regularly check the DN 50 trap (accessory) for possible soiling and clean if

required (see checklist).

Rell the trap with water before returning into use.

h

50 3064361_201811

21 Notes

513064361_201811

WOLF GmbH / Postfach 1380 / D-84048 Mainburg
Tel. [phone] / Fax [phone] / www.WOLF.eu