VTR 100B LITE Installation and Service manual v2

Commissioning
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27
Defrost levels cont'd
Defrost
level
Level of humidity Relative humidity
indoors
1
Description
4
High
61% - 80%
Apartments or houses with high humidity
5
Extremely high
>80%
Buildings with very high humidity level.
1
Approximate values of relative humidity in the extract air at cold outdoor temperatures.
2
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.
Password
Password XXXX
Locked YES/NO
3. Go to: Functions
Choose: Defrosting
Functions
Defrosting
4. Set the mode Defrosting
Mode 0–5
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.
Allow unbalance YES/NO
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.
Password
Password XXXX
Locked YES/NO
3. Go to: Week program
Service
Week program
4. Choose Week program again. Week program
Airflow
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.
Week program
Day: MON
Per 1: 07:00 16:00
Per 2: 00:00 00:00
212962 | v02