Zehnder Rittling VS Series Installation, Operation And Maintenance Manual page 44

Communicating thermostat
PCB inside electrical
box of cabinet
Dip switch positions for proper
communicating thermostat
operation
Dip
Switch Description
Position
1 On
Varies, depends on system
2
temperatures
3 Off
4 On
5 On
6 Off
7 Off
8 Off
Plug P1
24 volt thermostat
terminal block (for
use with standard
24V thermostats)
42
Wiring harness
provided with
communicating
thermostat
Plug P2
Emergency
shutdown, night
setback and
auxiliary contacts
On/off power
button
Sleep mode
Plug P2
Connection port
to communicating
thermostat
Electrical shock can cause
personal injury or death. When
installing or servicing system,
always turn off main power to
system. There may be more than
one disconnect switch.
Failure code
display area
Temperature
adjustment
On/off power
button
Fan:
high/low
Temperature
adjustment
Mode: heat,
cool or fan