Wolf WD-A Operation & Maintenance Manual page 16

AIR HEATER WD-A, WD-U
07
Switching Devices
07.09 Switchgear with EC controller 690 EC
07.10 Switchgear with EC controller 691 EC
If present,
remove jumper
Room thermostat
681/682/682-I
Contact 2-3 closed = heating
Contact 2-1 closed = cooling
Option
Supply line
230V
Max. 15 fans!
Option
on site
terminal box
*Bridge release *Bridge release
in fan terminal box in fan terminal box
24V or 10V to D1 24V or 10V to D1
(if available) (if available)
Power supply on site Power supply on site
230V or 400V 230V or 400V
If present, If present,
remove jumper remove jumper
ext. release /
Clock thermostat
frost protection
684.1
Contact 1-3 closed = heating
Contact 1-2 closed = cooling
Power supply on site
230V
Option
16 16
EC fan
Temperature sensor
Option
on site
EC fan
terminal box
*Bridge release
in fan terminal box
24V or 10V to D1
(if available)
Power supply on site
230V bzw. 400V
Option
Operating signal
pot. Free
Max. 15 fans!
Option
EC fan
terminal box
*Bridge release
in fan terminal box
24V or 10V to D1
(if available)
Power supply on site
230V bzw. 400V