JOHNSON CONTROLS
115
SECTION 6 – OPERATION
FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
6
LD20038a
Setting
Base
Temp.
+
Remote
Setting
Diff.
Setting
Base
Temp.
4 mADC
Setpoint [°C]
Remote Setpoint Setting Signal
(4~20 mADC)
20 mADC
Calculation of Set Point by remote 4~20 mADC
Signal (in cooling)
LD21977
Setting
Base
Temp.
4 mADC
Setpoint [°C]
Remote Setpoint Setting Signal
(4~20 mADC)
20 mADC
Calculation of Set Point by remote 4~20 mADC
Signal (in heating)
Setting
Base -
Temp.
Remote
Setting
Diff.
If a failure occurs, you automatically see the failure
and alarm screen.
For detailed information on how to change an entry
in one of these fields, see
VALVE OPERATION
Control Valve Mode:
Auto / Manual indicates wheth-
er the control valve is being operated automatically or
manually. To change to manual operation mode, press
and hold the
Manual
button for 3 seconds.
The Valve Position Setting may be
changed ONLY when the Control Valve
Mode Manual button is pushed.
Valve Position Setting:
shows the Capacity Control
Valve Position Setting, expressed as a percentage. In
case of the link-less burner, this valve position is for
the fuel damper motor. The air damper position is cal-
culated based on the fuel and air position table.
For detailed information on how to change the valve
position setting, see
.
To move to the Menu screen, set the Con-
trol Valve Mode to Auto.
