Valve Operation - York EX Series Installation, Operation & Maintenance Instructions Manual

FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
Setting
Base
Temp.
+
Remote
Setting
Diff.
Setting
Base
Temp.
4 mADC
Remote Setpoint Setting Signal
(4~20 mADC)
Calculation of Set Point by remote 4~20 mADC
Signal (in cooling)
Setting
Base
Temp.
Setting Remote
Base -
Setting
Temp.
Diff.
4 mADC
Remote Setpoint Setting Signal
Calculation of Set Point by remote 4~20 mADC
Signal (in heating)
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 Change Numeric Values on
page 92 .
JOHNSON CONTROLS
20 mADC
LD20038a
20 mADC
(4~20 mADC)
LD21977

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 Change Numeric Values on page
92 .
To move to the Menu screen, set the Con-
trol Valve Mode to Auto.
SECTION 6 – OPERATION
115
6