Setting the defrost level. SystemAir VTR 100/B LITE

Commissioning |

27

1

2

Defrost levels cont'd

Defrost level

4

Level of humidity

High

5 Extremely high

Relative humidity indoors 1

61% - 80%

>80%

Description

Apartments or houses with high humidity

Buildings with very high humidity level.

Approximate values of relative humidity in the extract air at cold outdoor temperatures.

In newly constructed houses it might be necessary with a higher defrost level during the first winter period.

5.6.1

Setting the defrost level

1. Go to the service menu by using the SELECTION knob.

Service

2. Enter the service level by typing the password, default

1111. Use the SELECTION knob for each digit and confirm with the ENTER button after each set digit and choose

"

NO

" for the system not be locked.

3. Go to: Functions

Choose: Defrosting

Password

Password XXXX

Locked YES/NO

Functions

4. Set the mode

Defrosting

Defrosting

Mode 0–5

Allow unbalance YES/NO

Note:

This setting is only valid for units equipped with counter flow heat exchangers.

5. Select if unbalanced airflows are allowed in the building during the defrost cycle. Choose between YES and NO. Default is YES.

5.7

Programming the Week schedule

Set the week schedule according to below procedure:

1. Go to the service menu by using the SELECTION knob.

Service

2. Enter the service level by typing the password, default

1111. Use the SELECTION knob for each digit and confirm with the ENTER button after each set digit and choose

" NO " for the system not be locked.

3. Go to:

Week program

Password

Password XXXX

Locked YES/NO

4. Choose Week program again.

Service

Week program

Week program

5. Set week day and time you want the unit to be in ON level. Two periods per day can be programmed. The rest of the time the unit will be in OFF level.

Airflow

Week program

Day: MON

Per 1: 07:00 16:00

Per 2: 00:00 00:00

212962 | v02