Manual Mode / 7-Day Program - Wolf WRS-K Installation And Operating Instructions Manual

4.2.3 Manual mode
/ 7-day program
Please note
14
4. Connection to a Modbus network
In manual mode or with a 7-day program enabled, the set values can be
adjusted via the offset variables. The system runs as specified by manual
mode or the 7-day program.
The following variables are effective:
- Offset set temperature (adjusting the set temperature)
- Offset set speed, supply air fan (adjusting the set speed for the supply air fan)
- Offset set speed, extract air fan (adjusting the set speed for the extract air fan)
- Offset set value, fresh air proportion (adjusting the fresh air proportion)
- Offset set pressure, supply air (adjusting the set pressure for the supply air fan)
- Offset set pressure, extract air (adjusting the set pressure for the extract air fan)
- Offset set flow rate, supply air (adjusting the set flow rate for the supply air)
- Offset set flow rate, extract air (adjusting the set flow rate for the extract air)
- Offset set value, relative humidity (adjusting the set value for relative humidity)
- Offset set value, absolute humidity (adj. the set value for absolute humidity)
- Operating mode
Any adjustment of the set values is always relative to the set values
selected for manual mode or the 7-day program.
Systems with BMK-F remote control:
Adjusting the set temperature:
If the set value is adjusted via the Modbus interface, after the set value has
been altered via the remote control, a changeover is made to the set value
for manual mode or the 7-day program, plus offset, via the Modbus interface.
Example:
Set value for manual mode = 21 °C; set value adjusted via BMK-F to 23 °C.
If an offset = -1 K is then specified, a new set value of 20 °C (21 °C – 1 K) is
enabled.
Adjustment of set speed / pressure / flow rate:
The set values for speed or pressure can be adjusted via the remote control
in 3 stages (see WRS-K installation and operating instructions). Here, the set
value is altered according to the values specified in the standard settings for
supply air and extract air.
If, after altering a set value via the remote control, a set value is adjusted
via the Modbus interface for supply air or extract air, a changeover is made
to the set values for manual mode or the 7-day program, plus offset, via the
Modbus interface for supply air and extract air.
Example:
Set speed for supply air in manual mode = 50 %; set speed for extract air in
manual mode = 45 %; set speeds changed via BMK-F to 60 % (supply air)
and 55 % (extract air).
If an offset for the supply air speed of 30 % is then specified, but no offset for
the extract air fan is set, new set values of 80 % (50 %+30 %) for the supply
air fan and 45 % (= set value for manual mode) for the extract air fan are
enabled.
Adjusting the set value for fresh air proportion:
If the set value is adjusted via the Modbus interface, after the set value has
been altered via the remote control, a changeover is made to the set value
for manual mode or the 7-day program, plus offset, via the Modbus interface.
Example:
Set value for manual mode = 40 %; set value adjusted via BMK-F to 50 %.
If an offset = -10 % is then specified, a new set value of 30 % (40 %-10 %) is
enabled.
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