Flexit Spirit K2R, User Manual And Installation Instructions

4

1  Functional Description

See page 15 for component description.

Cold outdoor air passes through one half of the rotor  

(HR-R), while warm extract air passes through the other half, 

without the two mixing. Using this principle, a large proportion 

of the heat in the extract air is transferred to the supply air - 

the heat store principle (see system sketches). If the outdoor 

temperature is extremely low, a thermostat-controlled 

heating element (EB1) also ensures that the supply air has 

the desired temperature. This supply air is passed via ducts 

and valves to living rooms and bedrooms. The extract air 

is extracted either from the same room or via door gaps/

overflow gratings to toilets and wet rooms. The used air is 

passed via a duct system back to the unit, gives off its heat 

and is expelled from the building via a roof cowl, combi-box 

or wall grating. 

When there is no need for heat recovery (for example in the 

summer), the rotor stops.

1.1  Heating element

The heating element is protected against overheating by 

the thermostat (F20), which switches off at 60°C. As an 

additional safety measure, the thermostat (F10) switches 

off at 85°C. Thermostat F10 needs to be reset manually by 

pressing the reset button. 

You will find the thermostat by opening the unit doors 

(located directly over the heating element).

1.2  Operation of kitchen hood

A - Knob for damper and for forced ventilation

B - Pushbutton for light

When cooking, open the damper by turning damper switch A.

1)  Turn the knob to level 1. The damper will be half open.

2)  Turn the knob to level 2. The damper will be fully open.

3)  Turn the knob to level 3 and the unit will increase the air 

volume to speed 3 (forced ventilation).

4)  You will need to turn the damper back manually (when 

cooking is finished).

Fig. 1

This is purely a ventilation system and not a 

heating system. The home must be heated in the 

normal manner. 

For user

B  ( 1 : 1 )

1

1

2

2

3

3

4

4

5

5

6

6

A

A

B

B

C

C

D

D

Date

Status

Description

Project

Stocknumber

Drawn

Approved

Projection

Scale

Replaces:

Replaced by:

18.02.2009

leif

G2-1A

1:5

351600

B

B  ( 1 : 1 )

1

1

2

2

3

3

4

4

5

5

6

6

A

A

B

B

C

C

D

D

Date

Status

Description

Project

Stocknumber

Drawn

Approved

Projection

Scale

Replaces:

Replaced by:

18.02.2009

leif

G2-1A

1:5

351600

B

B

A