Adjusting The Air Flow Rates; Balancing The Supply Air/Extract Air Flow Rates - Viessmann LB1 Installation And Service Instructions For Contractors

Commissioning, inspection, maintenance
Setting air flow rates
Setting the air flow rates for Vitovent 200-C
1. Service menu:
Press OK + simultaneously and hold for
å
approx. 4 s.
2. "Parameter level 1"
Setting the air flow rates for Vitovent 300-C/300-W
1. Service menu:
Press OK + simultaneously and hold for
å
approx. 4 s.
2. "Parameter level 1"

Adjusting the air flow rates

"Air distribution systems" installation and service
instructions

Balancing the supply air/extract air flow rates

Note
Balancing is only required if the total of the actual air
flow rates of all supply air apertures deviates by more
than 10 % from that of all extract air apertures.
Vitovent 200-C
To balance out the air flow rate differentials, the control
voltages of the supply and/or exhaust air fan can be
permanently increased or reduced.
1. Service menu:
Press OK + simultaneously and hold for
å
approx. 4 s.
Vitovent 300-C
1. Service menu:
Press OK + simultaneously and hold for
å
approx. 4 s.
2. "Parameter level 1"
3. Set "Imbalance permitted C1A2" to "1".
16
(cont.)
3. Set the air flow rates using the following parame-
ters:
■ "7D0A Flow rate, reduced ventilation"
■ "7D0B Flow rate, nominal ventilation"
■ "7D0C Flow rate, intensive ventilation"
Note
For Vitovent 200-C, the air flow rate for "Back-
ground vent." is set at the factory to 50 m
cannot be adjusted.
3. Set the air flow rates using the following parame-
ters:
"C109 Background ventilation"
■
■ "C10A Reduced ventilation"
■ "C10B Standard ventilation"
■ "C10C Intensive ventilation"
2. "Parameter level 1"
3. Set the control voltages:
■ "Control voltage matching, supply air fan
7D71"
"Control voltage matching, exhaust air fan
■
7D72"
4. An increase or decrease in the supply air flow rate
in comparison to the extract air flow rate can be set
with "Specified imbalance C1A3".
3
/h and