diff --git a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/AutoTuner/AMIGO/PID.mo b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/AutoTuner/AMIGO/PID.mo
index 8918f37119c..621c305ffd9 100644
--- a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/AutoTuner/AMIGO/PID.mo
+++ b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/AutoTuner/AMIGO/PID.mo
@@ -48,7 +48,7 @@ protected
     annotation (Placement(transformation(extent={{-10,-70},{10,-50}})));
 
 equation
-  connect(derTim.Td, Td) 
+  connect(derTim.Td, Td)
     annotation (Line(points={{12,-60},{120,-60}},
         color={0,0,127}));
   connect(intTim.Ti, Ti)
diff --git a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/HalfPeriodRatio.mo b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/HalfPeriodRatio.mo
index ad2deaaf0b5..1cd6c315233 100644
--- a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/HalfPeriodRatio.mo
+++ b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/HalfPeriodRatio.mo
@@ -38,12 +38,12 @@ protected
      final k=0)
     "Minimum value for the horizon length"
     annotation (Placement(transformation(extent={{-80,0},{-60,20}})));
-  Buildings.Controls.OBC.CDL.Discrete.TriggeredSampler tOnSam(final y_start=
-        Buildings.Controls.OBC.CDL.Constants.eps)
+  Buildings.Controls.OBC.CDL.Discrete.TriggeredSampler tOnSam(
+    final y_start=Buildings.Controls.OBC.CDL.Constants.eps)
     "Block that samples tOn when the tuning period ends"
     annotation (Placement(transformation(extent={{-80,70},{-60,90}})));
-  Buildings.Controls.OBC.CDL.Discrete.TriggeredSampler tOffSam(final y_start=
-        Buildings.Controls.OBC.CDL.Constants.eps)
+  Buildings.Controls.OBC.CDL.Discrete.TriggeredSampler tOffSam(
+    final y_start=Buildings.Controls.OBC.CDL.Constants.eps)
     "Block that samples tOff when the tuning period ends"
     annotation (Placement(transformation(extent={{-80,-60},{-60,-80}})));
   Buildings.Controls.OBC.CDL.Discrete.TriggeredSampler samAddtOntOff
@@ -175,10 +175,10 @@ lengths of the On period and the Off period, respectively.
 An On period is defined as the period when the relay switch output of the relay controller is
 <code>true</code>.
 Likewise, an Off period is defined as the period when the relay switch output is <code>false</code>.
-See details of the relay switch output in <a href=\"modelica://Buildings.Controls.OBC.Utilities.PIDWithAutotuning.Relay.Controller\">
+See details of the relay switch output in
+<a href=\"modelica://Buildings.Controls.OBC.Utilities.PIDWithAutotuning.Relay.Controller\">
 Buildings.Controls.OBC.Utilities.PIDWithAutotuning.Relay.Controller</a>.
 </p>
-
 <p>
 This block also detects when a PID tuning period should start and end.
 Specifically, the tuning period is triggered to begin when either <code>t<sub>on</sub></code>
@@ -186,8 +186,8 @@ or <code>t<sub>off</sub></code> becomes positive.
 The tuning period is triggered to end when either <code>t<sub>on</sub></code>
 or <code>t<sub>off</sub></code> changes after the tuning period starts, as illustrated below:
 </p>
-<p align=\"left\">
-<img alt=\"image\" src=\"modelica://Buildings/Resources/Images/Controls/OBC/Utilities/PIDWithAutotuning/Relay/algorithm.png\" border=\"1\"/>
+<p align=\"center\">
+<img alt=\"image\" src=\"modelica://Buildings/Resources/Images/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/algorithm.png\"/>
 </p>
 
 <h4>References</h4>
diff --git a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/OnOffPeriod.mo b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/OnOffPeriod.mo
index 3657091a883..ce58c3f0c51 100644
--- a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/OnOffPeriod.mo
+++ b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/OnOffPeriod.mo
@@ -118,8 +118,8 @@ First implementation<br/>
 This block processes a relay switch output and calculates the length of
 the On period, <code>tOn</code>, and the length of the Off period, <code>tOff</code>, as shown below.
 </p>
-<p align=\"left\">
-<img alt=\"image\" src=\"modelica://Buildings/Resources/Images/Controls/OBC/Utilities/PIDWithAutotuning/Relay/Onoff.png\" border=\"1\"/>
+<p align=\"center\">
+<img alt=\"image\" src=\"modelica://Buildings/Resources/Images/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/OnOff.png\"/>
 </p>
 <p>
 Note that <code>tOn</code> is sampled when the relay switch output becomes false.
diff --git a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/Validation/HalfPeriodRatio.mo b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/Validation/HalfPeriodRatio.mo
index 14c9885e879..d98898a9c54 100644
--- a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/Validation/HalfPeriodRatio.mo
+++ b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/Validation/HalfPeriodRatio.mo
@@ -76,13 +76,16 @@ Buildings.Controls.OBC.Utilities.PIDWithAutotuning.Relay.BaseClasses.HalfPeriodR
 </p>
 <ul>
 <li>
-At <i>0.1</i>s, the length of the On period becomes <i>0.1</i>s, triggering the training period to start.
+At <i>0.1</i>s, the length of the On period is sampled and it becomes <i>0.1</i>s,
+triggering the training period to start.
 </li>
 <li>
-At <i>0.7</i>s, the length of the Off period becomes <i>0.5</i>s.
+At <i>0.7</i>s, the length of the Off period becomes is sampled
+and it becomes <i>0.5</i>s.
 </li>
 <li>
-At <i>0.9</i>s, the length of the On period changes from <i>0.1</i>s to <i>0.9</i>s while that of the Off period remains <i>0.5</i>s.
+At <i>0.9</i>s, the length of the On period changes from <i>0.1</i>s to <i>0.9</i>s
+while that of the Off period remains <i>0.5</i>s.
 This triggers the training period to end.
 </li>
 </ul>
diff --git a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/Validation/NormalizedTimeDelay.mo b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/Validation/NormalizedTimeDelay.mo
index aba2d92ab16..ef33d42ca63 100644
--- a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/Validation/NormalizedTimeDelay.mo
+++ b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/Validation/NormalizedTimeDelay.mo
@@ -2,7 +2,7 @@ within Buildings.Controls.OBC.Utilities.PIDWithAutotuning.Relay.BaseClasses.Vali
 model NormalizedTimeDelay "Test model for calculating the normalized time delay"
   Buildings.Controls.OBC.Utilities.PIDWithAutotuning.Relay.BaseClasses.NormalizedTimeDelay
     norTimDel(gamma=3) "Calculate the normalized time delay"
-    annotation (Placement(transformation(extent={{-8,-10},{12,10}})));
+    annotation (Placement(transformation(extent={{-10,-10},{10,10}})));
   Buildings.Controls.OBC.CDL.Continuous.Sources.Pulse rho(
     amplitude=1,
     width=0.7,
@@ -12,7 +12,7 @@ model NormalizedTimeDelay "Test model for calculating the normalized time delay"
     annotation (Placement(transformation(extent={{-50,-10},{-30,10}})));
 equation
   connect(rho.y, norTimDel.rho)
-    annotation (Line(points={{-28,0},{-10,0}}, color={0,0,127}));
+    annotation (Line(points={{-28,0},{-12,0}}, color={0,0,127}));
   annotation (
       experiment(
       StopTime=1.0,
diff --git a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/Controller.mo b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/Controller.mo
index 98afb5c65fe..de387db0da7 100644
--- a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/Controller.mo
+++ b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/Controller.mo
@@ -120,8 +120,8 @@ equation
           fillPattern=FillPattern.Solid,
           fillColor={175,175,175},
           textString="Relay"),
-        Line(points={{-70,24},{-34,24},{-34,58},{38,58},{38,24},{66,24}}, color=
-             {28,108,200})}),                                    Diagram(
+        Line(points={{-70,24},{-34,24},{-34,58},{38,58},{38,24},{66,24}}, color
+            ={28,108,200})}),                                    Diagram(
         coordinateSystem(preserveAspectRatio=false)),
 Documentation(info="<html>
 <p>
diff --git a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/ResponseProcess.mo b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/ResponseProcess.mo
index efd36089ae9..08e85830e74 100644
--- a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/ResponseProcess.mo
+++ b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/Relay/ResponseProcess.mo
@@ -6,7 +6,7 @@ block ResponseProcess
   parameter Real yLow(min=1E-6) = 0.5
     "Lower value for the output";
   Buildings.Controls.OBC.CDL.Interfaces.BooleanInput on
-    "Relay switch. True: tuning on perid, False: tuningoff period"
+    "Relay switch. True: tuning on perid, False: tuning off period"
     annotation (Placement(transformation(extent={{-140,-80},{-100,-40}}),
         iconTransformation(extent={{-140,-80},{-100,-40}})));
   Buildings.Controls.OBC.CDL.Interfaces.RealInput tim(
diff --git a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/SystemIdentification/FirstOrderTimedelayed/BaseClasses/TimeConstantDelay.mo b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/SystemIdentification/FirstOrderTimedelayed/BaseClasses/TimeConstantDelay.mo
index 2ef0cd3ec72..339a1456aa6 100644
--- a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/SystemIdentification/FirstOrderTimedelayed/BaseClasses/TimeConstantDelay.mo
+++ b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/SystemIdentification/FirstOrderTimedelayed/BaseClasses/TimeConstantDelay.mo
@@ -18,7 +18,7 @@ block TimeConstantDelay
     "Gain"
     annotation (Placement(transformation(extent={{-140,-20},{-100,20}}),
         iconTransformation(extent={{-140,-20},{-100,20}})));
-  Buildings.Controls.OBC.CDL.Interfaces.RealInput ratioLT
+  Buildings.Controls.OBC.CDL.Interfaces.RealInput rat
     "Ratio between the time constant and the time delay"
     annotation (Placement(transformation(extent={{-140,-70},{-100,-30}}),
         iconTransformation(extent={{-140,-80},{-100,-40}})));
@@ -85,7 +85,7 @@ protected
 equation
   connect(absk.u, k)
     annotation (Line(points={{-82,0},{-120,0}}, color={0,0,127}));
-  connect(ratioLT, exp.u)
+  connect(rat, exp.u)
     annotation (Line(points={{-120,-50},{-82,-50}}, color={0,0,127}));
   connect(relDeaBan.y, div1.u1) annotation (Line(points={{22,40},{28,40},{28,0},
           {-4,0},{-4,-14},{-2,-14}}, color={0,0,127}));
@@ -116,8 +116,7 @@ equation
   connect(div3.y, T) annotation (Line(points={{-18,70},{120,70}},
         color={0,0,127}));
   connect(mul2.u2, T) annotation (Line(points={{-2,78},{-10,78},{-10,70},{120,
-          70}},
-        color={0,0,127}));
+          70}}, color={0,0,127}));
   connect(mul2.u1, exp.u) annotation (Line(points={{-2,90},{-90,90},{-90,-50},{-82,
           -50}}, color={0,0,127}));
   connect(mul2.y, L) annotation (Line(points={{22,84},{92,84},{92,-60},{120,-60}},
diff --git a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/SystemIdentification/FirstOrderTimedelayed/BaseClasses/Validation/TimeConstantDelay.mo b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/SystemIdentification/FirstOrderTimedelayed/BaseClasses/Validation/TimeConstantDelay.mo
index 6cc7db7289d..41fcc681a3f 100644
--- a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/SystemIdentification/FirstOrderTimedelayed/BaseClasses/Validation/TimeConstantDelay.mo
+++ b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/SystemIdentification/FirstOrderTimedelayed/BaseClasses/Validation/TimeConstantDelay.mo
@@ -27,8 +27,8 @@ equation
           6},{-12,6}}, color={0,0,127}));
   connect(k.y, timConDel.k)
     annotation (Line(points={{-38,0},{-12,0}}, color={0,0,127}));
-  connect(ratioLT.y, timConDel.ratioLT) annotation (Line(points={{-38,-40},{-20,
-          -40},{-20,-6},{-12,-6}}, color={0,0,127}));
+  connect(ratioLT.y, timConDel.rat) annotation (Line(points={{-38,-40},{-20,-40},
+          {-20,-6},{-12,-6}}, color={0,0,127}));
   annotation (
       experiment(
       StopTime=1.0,
diff --git a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/SystemIdentification/FirstOrderTimedelayed/ControlProcessModel.mo b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/SystemIdentification/FirstOrderTimedelayed/ControlProcessModel.mo
index 6dc8a6be0a8..871b949f93d 100644
--- a/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/SystemIdentification/FirstOrderTimedelayed/ControlProcessModel.mo
+++ b/Buildings/Controls/OBC/Utilities/PIDWithAutotuning/SystemIdentification/FirstOrderTimedelayed/ControlProcessModel.mo
@@ -100,7 +100,8 @@ protected
     final y_start=1)
     "Block that samples the time constant when the tuning period ends"
     annotation (Placement(transformation(extent={{70,10},{90,30}})));
-  Buildings.Controls.OBC.CDL.Discrete.TriggeredSampler samtau(final y_start=0.5)
+  Buildings.Controls.OBC.CDL.Discrete.TriggeredSampler samtau(
+    final y_start=0.5)
     "Block that samples the normalized time delay when the tuning period ends"
     annotation (Placement(transformation(extent={{-70,-70},{-50,-50}})));
   Buildings.Controls.OBC.CDL.Continuous.MultiplyByParameter gai(
@@ -110,8 +111,7 @@ protected
 
 equation
   connect(gain.u, u) annotation (Line(points={{-86,28},{-88,28},{-88,80},{-120,
-          80}},
-        color={0,0,127}));
+          80}},  color={0,0,127}));
   connect(gain.tOn, tOn) annotation (Line(points={{-86,20},{-94,20},{-94,40},{
           -120,40}}, color={0,0,127}));
   connect(gain.tOff, tOff) annotation (Line(points={{-86,12},{-94,12},{-94,-20},
@@ -137,19 +137,15 @@ equation
          color={0,0,127}));
   connect(samk.trigger, triEnd) annotation (Line(points={{-44,8},{-44,-90},{80,
           -90},{80,-120}}, color={255,0,255}));
-  connect(gain.k, samk.u)
-    annotacolor={0,0,127}));
   connect(samk.y, k) annotation (Line(points={{-32,20},{-20,20},{-20,70},{120,
-          70}},
-        color={0,0,127}));
+          70}}, color={0,0,127}));
   connect(timConDel.tOn, samtOn.y) annotation (Line(points={{-2,26},{-28,26},{
           -28,60},{-48,60}},color={0,0,127}));
   connect(samtOn.u, tOn)
     annotation (Line(points={{-72,60},{-94,60},{-94,40},{-120,40}},
         color={0,0,127}));
   connect(samtOn.trigger, triEnd) annotation (Line(points={{-60,48},{-60,-20},{
-          -44,-20},{-44,-90},{80,-90},{80,-120}},
-         color={255,0,255}));
+          -44,-20},{-44,-90},{80,-90},{80,-120}}, color={255,0,255}));
   connect(gai.y, addPar.u)
     annotation (Line(points={{-14,-60},{-10,-60}}, color={0,0,127}));
   connect(tau, samtau.u)
@@ -162,9 +158,11 @@ equation
           -60,-90},{-60,-72}}, color={255,0,255}));
   connect(addPar.y, div.u2) annotation (Line(points={{14,-60},{20,-60},{20,-40},
           {6,-40},{6,-26},{10,-26}}, color={0,0,127}));
-  connect(div.y, timConDel.ratioLT) annotation (Line(points={{34,-20},{36,-20},
-          {36,0},{-12,0},{-12,14},{-2,14}}, color={0,0,127}));
-  annotation (
+  connect(div.y, timConDel.rat) annotation (Line(points={{34,-20},{36,-20},{36,
+          0},{-12,0},{-12,14},{-2,14}}, color={0,0,127}));
+  connect(gain.k, samk.u)
+    annotation (Line(points={{-62,20},{-56,20}}, color={0,0,127}));
+annotation (
         defaultComponentName = "conProMod",
         Icon(coordinateSystem(preserveAspectRatio=false), graphics={
         Rectangle(
@@ -192,7 +190,7 @@ equation
               34}}, color={28,108,200}),
         Line(points={{-58,36},{82,36}}, color={28,108,200},
           pattern=LinePattern.Dash)}),
-                                  Diagram(coordinateSystem(preserveAspectRatio=false)),
+  Diagram(coordinateSystem(preserveAspectRatio=false)),
     Documentation(revisions="<html>
 <ul>
 <li>
@@ -201,17 +199,26 @@ First implementation<br/>
 </li>
 </ul>
 </html>", info="<html>
-<p>This block calculates the model parameters of a first-order time delayed model.
-Specifically, it employs <a href=\"modelica://Buildings.Controls.OBC.Utilities.PIDWithAutotuning.SystemIdentification.FirstOrderTimedelayed.BaseClasses.Gain\">
-Buildings.Controls.OBC.Utilities.PIDWithAutotuning.SystemIdentification.FirstOrderTimedelayed.BaseClasses.Gain</a> and <a href=\"modelica://Buildings.Controls.OBC.Utilities.PIDWithAutotuning.SystemIdentification.FirstOrderTimedelayed.BaseClasses.TimeConstantDelay\">
+<p>
+This block calculates the model parameters of a first-order time delayed model.
+Specifically, it employs
+<a href=\"modelica://Buildings.Controls.OBC.Utilities.PIDWithAutotuning.SystemIdentification.FirstOrderTimedelayed.BaseClasses.Gain\">
+Buildings.Controls.OBC.Utilities.PIDWithAutotuning.SystemIdentification.FirstOrderTimedelayed.BaseClasses.Gain</a>
+and
+<a href=\"modelica://Buildings.Controls.OBC.Utilities.PIDWithAutotuning.SystemIdentification.FirstOrderTimedelayed.BaseClasses.TimeConstantDelay\">
 Buildings.Controls.OBC.Utilities.PIDWithAutotuning.SystemIdentification.FirstOrderTimedelayed.BaseClasses.TimeConstantDelay</a>
-to identify the gain and the time constant/the time delay, respectively.</p>
-<p>This block is inactive by default and is active once the tuning period starts, i.e., <code>triSta</code> becomes true;
-It then calculates the model parameters at the time when the tuning period ends, i.e., <code>triEnd</code> becomes true.
+to identify the gain, the time constant and the time delay, respectively.
+</p>
+<p>
+The calculations are disabled by default. They will be enabled once the tuning period starts,
+i.e., <code>triSta</code> becomes true;
+It then calculates the model parameters at the time when the tuning period ends,
+i.e., <code>triEnd</code> becomes true.
 </p>
 <p>
 Refer to <a href=\"modelica://Buildings.Controls.OBC.Utilities.PIDWithAutotuning.Relay.Controller\">
-Buildings.Controls.OBC.Utilities.PIDWithAutotuning.Relay.Controller</a> for detailed explanation of the parameters <code>yHig</code>, <code>yLow</code>, and <code>deaBan</code>.
+Buildings.Controls.OBC.Utilities.PIDWithAutotuning.Relay.Controller</a> for detailed explanation
+of the parameters <code>yHig</code>, <code>yLow</code>, and <code>deaBan</code>.
 </p>
 </html>"));
 end ControlProcessModel;
diff --git a/Buildings/Resources/Images/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/OnOff.png b/Buildings/Resources/Images/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/OnOff.png
new file mode 100644
index 00000000000..9076999be0f
Binary files /dev/null and b/Buildings/Resources/Images/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/OnOff.png differ
diff --git a/Buildings/Resources/Images/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/OnOff.svg b/Buildings/Resources/Images/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/OnOff.svg
new file mode 100644
index 00000000000..677392e9229
--- /dev/null
+++ b/Buildings/Resources/Images/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/OnOff.svg
@@ -0,0 +1,472 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
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+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
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+   version="1.1"
+   id="svg869"
+   width="209.50383"
+   height="148.01692"
+   viewBox="0 0 209.50383 148.01692"
+   sodipodi:docname="OnOff.svg"
+   inkscape:version="0.92.5 (2060ec1f9f, 2020-04-08)"
+   inkscape:export-filename="/home/jianjunhu/GitFolder/modelica-buildings/Buildings/Resources/Images/Controls/OBC/Utilities/PIDWithAutotuning/Relay/BaseClasses/OnOff.png"
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+       id="flowPara3047-8-3-8">tOff becomes</flowPara><flowPara
+       id="flowPara3193">positive</flowPara></flowRoot>  <flowRoot
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diff --git a/Buildings/Resources/Images/Controls/OBC/Utilities/PIDWithAutotuning/Relay/Onoff.png b/Buildings/Resources/Images/Controls/OBC/Utilities/PIDWithAutotuning/Relay/Onoff.png
deleted file mode 100644
index 8df6d9259ae..00000000000
Binary files a/Buildings/Resources/Images/Controls/OBC/Utilities/PIDWithAutotuning/Relay/Onoff.png and /dev/null differ
diff --git a/Buildings/Resources/Images/Controls/OBC/Utilities/PIDWithAutotuning/Relay/algorithm.png b/Buildings/Resources/Images/Controls/OBC/Utilities/PIDWithAutotuning/Relay/algorithm.png
deleted file mode 100644
index 25617c41edd..00000000000
Binary files a/Buildings/Resources/Images/Controls/OBC/Utilities/PIDWithAutotuning/Relay/algorithm.png and /dev/null differ
diff --git a/Buildings/Resources/Scripts/Dymola/Controls/OBC/Utilities/PIDWithAutotuning/SystemIdentification/FirstOrderTimedelayed/BaseClasses/Validation/TimeConstantDelay.mos b/Buildings/Resources/Scripts/Dymola/Controls/OBC/Utilities/PIDWithAutotuning/SystemIdentification/FirstOrderTimedelayed/BaseClasses/Validation/TimeConstantDelay.mos
index 13d8afd483d..f2ce5275f20 100644
--- a/Buildings/Resources/Scripts/Dymola/Controls/OBC/Utilities/PIDWithAutotuning/SystemIdentification/FirstOrderTimedelayed/BaseClasses/Validation/TimeConstantDelay.mos
+++ b/Buildings/Resources/Scripts/Dymola/Controls/OBC/Utilities/PIDWithAutotuning/SystemIdentification/FirstOrderTimedelayed/BaseClasses/Validation/TimeConstantDelay.mos
@@ -1,6 +1,6 @@
 simulateModel("Buildings.Controls.OBC.Utilities.PIDWithAutotuning.SystemIdentification.FirstOrderTimedelayed.BaseClasses.Validation.TimeConstantDelay", method="Cvode", tolerance=1e-06, resultFile="TimeConstantDelay");
-createPlot(id=1, position={15, 15, 1101, 667}, y={"tOn.y"}, range={0.0, 1.0, -0.1, 0.20000000000000004}, grid=true, subPlot=101, colors={{28,108,200}});
-createPlot(id=1, position={15, 15, 1101, 667}, y={"k.y"}, range={0.0, 1.0, 0.8, 1.2000000000000002}, grid=true, subPlot=102, colors={{28,108,200}});
-createPlot(id=1, position={15, 15, 1101, 667}, y={"ratioLT.y"}, range={0.0, 1.0, 0.20000000000000004, 0.5000000000000001}, grid=true, subPlot=103, colors={{28,108,200}});
-createPlot(id=1, position={15, 15, 1101, 667}, y={"timConDel.T"}, range={0.0, 1.0, -0.1, 0.20000000000000004}, grid=true, subPlot=104, colors={{28,108,200}});
-createPlot(id=1, position={15, 15, 1101, 667}, y={"timConDel.L"}, range={0.0, 1.0, -0.05, 0.05}, grid=true, subPlot=105, colors={{28,108,200}});
\ No newline at end of file
+createPlot(id=1, position={15, 15, 1101, 667}, y={"tOn.y"}, range={0.0, 1.0, -0.1, 0.2}, grid=true, subPlot=101, colors={{28,108,200}});
+createPlot(id=1, position={15, 15, 1101, 667}, y={"k.y"}, range={0.0, 1.0, 0.8, 1.2}, grid=true, subPlot=102, colors={{28,108,200}});
+createPlot(id=1, position={15, 15, 1101, 667}, y={"ratioLT.y"}, range={0.0, 1.0, 0.2, 0.5}, grid=true, subPlot=103, colors={{28,108,200}});
+createPlot(id=1, position={15, 15, 1101, 667}, y={"timConDel.T"}, range={0.0, 1.0, -0.1, 0.2}, grid=true, subPlot=104, colors={{28,108,200}});
+createPlot(id=1, position={15, 15, 1101, 667}, y={"timConDel.L"}, range={0.0, 1.0, -0.05, 0.05}, grid=true, subPlot=105, colors={{28,108,200}});