Biddle Comfort Circle Series Manual page 19

M
ANUAL
3
3
Version: 1.0 (22-09-2005)
1
2
c
1
2
c
0-10VDC output
1. Open the electronics module 1.
2. Make crosswise cuts in grommet 2.
3. Lead the wiring through the grommet.
4. Connect the wiring to terminal X340 3.
5. Set function 85 to value 1 (enabled).
6. Set functions 86, 87 and 88 to value 99.
This makes that the air valves are always opened fully
when the unit is in operation.
Caution:
Values other than 99 make that the air valves are not
opened fully, which will affect the operation of the unit.
Signal to output O3
For ventilation units, the function of output O3 is set to the
default value 70, with contact being made to the output when
the fans are rotating. If the discharge temperature falls below
6°C, the contact will be broken and the ventilation units will
be switched off.
This signal can be used either to directly control suitable ser-
vomotors or to control a 24V relay controlling the servomo-
tors.
1. Connect the wiring to output O3 1.
2.8.3 Servomotor power supply
Power supply to the servomotors of the air valves can be
obtained either via terminal X230 2 on the electronics mod-
ule or via connection X340 3 (0-10VDC output) on the PCB.
Caution:
The maximum load is 24V~, max. 5VA.
I
NSTALLATION
19