Setting The Defrost Level; Programming The Week Schedule - SystemAir VTR 100/B LITE Installation And Service

Defrost levels cont'd
Defrost Level of humidity
level
4
High
5
Extremely high
1 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.
2
5.6.1

Setting the defrost level

1. Go to the service menu by using the SELECTION knob.
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
4. Set the mode
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.
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
4. Choose Week program again.
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.
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Description
Relative humidity
indoors
1
61% - 80%
Apartments or houses with high humidity
>80%
Buildings with very high humidity level.
Password
Password XXXX
Locked YES/NO
Functions
Defrosting
Defrosting
Mode 0–5
Allow unbalance YES/NO
Password
Password XXXX
Locked YES/NO
Service
Week program
Week program
Airflow
Week program
Day: MON
Per 1: 07:00 16:00
Per 2: 00:00 00:00
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