Floor Heating reference

The palette buttons

Highlighted buttons (in the color of the plug-in) insert something new into the drawing; all others change what is already there. Every button shows a tooltip when you hover over it. Almost every button runs in a loop: click the next object right away, Enter finishes.

Rooms page

Button / section	Effect	More
Values for the next room: number, name, room temp., heat loss	Values of the next room.	Next room
Insert room tag right away, "..."	Every new room gets its tag; "..." = lines and shape.	Room tag
Rectangular room	Click two corners.	Rectangular
Room from polyline	Click a closed polyline; it stays.	Polyline
Pick room (points)	Corner by corner, `Enter` closes.	Points
Change room ...	Number, name, room temperature, heat loss, edge distance.	Change room
Insert / reposition room tags	Insert missing tags, put existing ones back in place.	Tags
Delete room	Room with heated areas, exclusion areas and loops.	Delete
Check rooms	Count and check – result in the command line.	Check

Heated areas page

Button / section	Effect	More
Edge distance	Distance of the area from wall and exclusion areas, for new rooms.	Edge distance
Generate heated areas	Click rooms – their areas are rebuilt (including parts by hand).	Generate
Heated areas for all rooms	All rooms of the drawing; parts by hand stay.	All
Divide area	Dividing line across the area.	Divide
Join areas	Click two areas – the division is removed.	Join
Rectangular exclusion area / from polyline / pick (points)	Spot without heating; the areas leave it out.	Exclusion areas

Loops page

Button / section	Effect	More
Values for the next loop: pattern, spacing, pipe, maximum loop length	Values of the next loop.	Next loop
Perimeter zone (closer at the exterior wall)	Choose when placing, width, spacing.	Perimeter zone
Property fields of the next loop	Values for every newly placed loop.	Property fields
Place loop ...	Click the heated area, then the connector point.	Place
Always show before placing	The dialog box with the values first.	Place loop dialog box
Choose connector point	Click the loop, then the spot at the edge.	Connector point
Choose perimeter zone	Click the loop, then the walls.	Perimeter zone
Change loop ...	Pattern, spacing, pipe, number, perimeter zone of a loop.	Change
Delete loop	The loops of the clicked area.	Delete
Loop automatic again	Rebuild loops and areas drawn by hand.	Automatic again

Manifold page

Button / section	Effect	More
Next manifold: template, outlets, to match the loops, With cabinet	Values of the next manifold.	Next manifold
Insert manifold …	Manifold at the cursor, dialog box first according to the check box.	Insert
Show the manifold dialog box before inserting	Name, outlets, outlet spacing, cabinet, templates first.	Manifold dialog box
Show properties before inserting	The property fields of the manifold first.	Property fields
Change manifold …, Flip outlet side, Delete manifold	Change an existing manifold.	Change
Assign loops	All loops in order to the manifolds.	Assign
Assign loop by hand	One loop to a particular outlet.	By hand

Leaders page

Button / section	Effect	More
Center-to-center distance	Distance supply/return for drawing and connecting.	By hand
Draw leader by hand	Pair from the outlet to the loop, corner by corner.	By hand
Single (supply or return only)	Draw one pipe, also continuing at an open end.	Single
Move	Move straight segments sideways.	Move
Cross, Swap	Change side or track of supply and return.	Cross
Leader corridor: width (with check mark and pick button), edge, Spread across the width	Values of the next corridor.	Leader corridor
Insert leader corridor	Insert the corridor point by point.	Leader corridor
Extend, Draw branch, Change width, Add vertex, Remove vertex, Delete segment, Join, Move, Delete	Corridor tools.	Edit corridor
All loops of a manifold	The whole bundle of a manifold.	All
Individual loops	Connect only the clicked loop.	Individual
Leaders in the insulation layer	May run under heated areas (per drawing).	Insulation layer

Output page

Button	Effect	More
Loop schedule, "..."	One row per loop; "..." = list options.	Loop schedule
Bill of materials, "..."	Heating pipe with coils, manifolds, edge insulation strip.	Bill of materials
Bill of materials across the project …, across xrefs …	Across several drawings.	Across drawings
Update lists	Recalculate inserted tables.	Update
Evaluate visible objects only	Layers turned off or frozen do not count.	Update
Annotate, Templates ...	Annotate a room, loop or manifold; template editor.	Annotate
Several ..., Edit, Check, Reassign	Annotate many; maintain annotations.	Several, Edit
Loop text and coloring …	What the loop text shows, coloring.	Loop text

Tools (below every page)

Button	Effect	More
Properties	Room, heated area/loop/leader or manifold: the matching dialog box.	Properties
Delete	Room, loop, leader, manifold or leader corridor.	Delete
Add vertex, Remove vertex	Add or remove a corner (loop, leader).	Vertex
Move segment, Move corner	Straight segments sideways, corners freely.	Segment, Corner
Automatic again	Rebuild parts drawn by hand.	Automatic again
Check	Crossings, loop-backs, areas without a loop …	Check

All keys at the cursor

The same key means the same thing in every plug-in. The bar at the cursor shows which ones apply right now; Shift and Ctrl are never used at the cursor (they belong to the CAD).

Key	Meaning in Floor Heating
`A`	manifold: distance to a reference point; leader by hand: spacing increment and wall offset; leader corridor: width and wall offset; change width: enter the width; move, segment, vertex, corner: type a distance
`Space`	leader by hand: 90° → 45° → free; leader corridor: angle increment on/off; manifold: switch the base point; add vertex: free; move corner: stay on a segment; vertex on a corridor: across only
`V`	while drawing: spacing increment on/off
`F`	leader by hand / single: connect to the loop now
`I`	leader by hand: supply or return only from here
`S`	leader by hand: pair to the other side; manifold: outlet side front/back
`R`	rotate the manifold
`D`	type an angle (manifold, base direction of a run)
`W`	pick an angle – always two clicks
`M`	manifold: in turn top/bottom, left/right
`G`	change width (leader corridor): whole corridor / this segment only
← / → / ↓	leader corridor: left edge, right edge, center; with wall offset: side of the wall
`Backspace`	leader corridor: last point back
Z	pick room, exclusion area and dividing line: last point back (Back option)
`Tab`	choosing a solution when connecting: next solution
`Enter`	finish or accept; connector point: automatic
`Esc`	cancel; while drawing, placed segments stay; with a dialog box first, back to the dialog box

The gear menu

Entry	Effect
Settings › Drawing units …	In which unit new parts are created and fields show dimensions – for all plug-ins, see Drawing units.
Settings › Display ...	Layer, color, linetype and lineweight per object type, hatch of the leader corridor, loop separated red/blue – see Display.
Settings › Manifold options …	Systems of supply and return, look of cabinet and rows – see Manifold options.
Settings › Room tag …	What the room tag of new rooms shows, shape – see Room tag.
Settings › Loop annotation …	What the loop text shows, coloring – see Loop annotation.
Settings › Heated areas at leader corridors › Ask · Always adapt · Always keep	What happens to heated areas a new leader corridor touches (default Ask). Also resets "Remember answer".
Properties › Property fields …	Which fields exist (default fields, own fields) – for all plug-ins.
Properties › Author …	The name in output – for all plug-ins, empty by default.
Layer › Create all layers of this plug-in	Creates missing layers of the plug-in; existing ones stay as they are.
Help › Help	This online help in the browser.
Help › Info	Version and program parts.
Help › Getting started active	Page cards and insertion help for this plug-in on or off.
Help › Show getting started	The tip wizard guides you through the page shown.
Help › Close palette	Close the palette – reopen it from the ribbon.

The LuaCAD settings (for all plug-ins) are in the ribbon › tab LuaCAD › Info – see Getting started.

Dialog boxes

Room

Rooms page › Change room ... or tools › Properties on a room. At the top "Room 1.01 Living", below it the values of the room; under Key figures for information area, perimeter, level and the heated areas with their area (and the number of divisions). Every field: Room.

Place loop

Comes before Place loop ... (with the check box "Always show before placing"). The same values as in the palette; OK stores them for all next loops and puts the loop at the cursor. Esc at the cursor returns here, Cancel ends. Every field: Place loop.

Loop

Change loop ... or tools › Properties on a heated area, loop or its leader. The values apply only to this loop; OK re-places it. Every field: Loop.

Room tag

Gear menu › Room tag … or "..." next to the check box on the Rooms page. Applies to new room tags; stored in the annotation template "Room (Floor Heating)" – same as default = no own version. Every field: Room tag.

Loop annotation

Gear menu › Loop annotation … or Output page › Loop text and coloring …. Applies to new loop texts; stored in the annotation template "Loop (Floor Heating)". If someone has written the template differently in the template editor, a note at the top says so – OK then replaces its text with the lines. Every field: Loop annotation.

Display

Gear menu › Display .... One button per object type: the attribute dialog box with layer (from the drawing), color, linetype and lineweight; Default resets the type. With Save the display applies to new objects and is transferred to all objects of this type in the drawing (one undo step). A loop colored when annotating keeps its color. Every setting: Display.

Manifold

Comes before inserting (with the check box "Show the manifold dialog box before inserting") and with Change manifold … (title "Change manifold"). The values apply to the next or to the clicked manifold. The systems are fixed: supply and return. Every field: Manifold dialog box.

Manifold options

Gear menu › Manifold options …. Applies to all drawings. Every setting: Manifold options.

List options

"..." next to Loop schedule or Bill of materials; the title names the list. Every setting: List options.

Property fields before inserting

With the check box Show properties before inserting (Manifold page) or from the section Property fields of the next loop (Loops page): the values go to every part you insert now; an ID is counted up. Esc at the cursor returns here. Change parts already inserted in the Properties palette.

Distance

A when inserting a manifold: the X and Y distances to the reference point and the base point in the 3 × 3 field. See Inserting at a distance.

Drawing units

Gear menu › Drawing units …: in which unit new parts come into the drawing and fields show dimensions (automatic, mm, cm, dm, m). Applies to all plug-ins – see Drawing units.

Questions

Question	When	Choice
Adapt heated areas	A new or extended leader corridor touches heated areas.	Adapt heated areas · Keep heated areas; "Remember answer" (reset in the gear menu)
Leader corridor changed	Loops are connected automatically through the changed corridor.	Re-route · Keep (by hand)
Delete leader corridor	Delete segment at the trunk of a corridor with branches.	Whole corridor · This segment only
Manifold has too few outlets	Connecting all loops, but outlets are missing.	Extend outlets to n · Without these loops
Loop is already connected	Leader by hand on a connected loop.	Redraw by hand · Recalculate as bundle

Every setting in detail

Here is every setting of Floor Heating – in the palette, in the gear menu and in the dialog boxes – with its effect, the default value and an example. Palette values apply only to parts you insert from then on and are saved immediately. Type dimensions in the unit of the field; every number field calculates ("600+400" becomes 1000). A "-" in the column "Default" means: the value depends on the data.

Palette, Rooms page

Setting	What it does	Default	Example
Number	Room number of the next room; applies only to it, empty again afterwards. Empty = no number.	empty	1.01
Name	Room name of the next rooms.	Room	Living
Room temp.	Room temperature in °C (0 to 40) – value for tag, loop text and list.	20 °C	24 °C (bathroom)
Heat loss	Heat loss in W, optional – value for tag, loop text and list.	empty	850 W
Insert room tag right away	Every new room gets its tag from the template "Room (Floor Heating)".	on	off when tracing many rooms

Palette, Heated areas page

Setting	What it does	Default	Example
Edge distance	Distance of the heated areas from wall and exclusion areas (0 to 2000 mm), for new rooms; per room under "Change room". Also the width of the joint at a division.	100 mm	150 mm

Palette, Loops page

Setting	What it does	Default	Example
Pattern	Counterflow (bifilar) or serpentine (single).	Counterflow (bifilar)	serpentine in the bathroom
Spacing	On-center spacing of the pipes, 30 to 1000 mm; ▾ = 50 to 300 mm.	150 mm	100 mm
Pipe	Outside diameter x wall thickness in mm; from it R min = 5 × d.	16 x 2 (R min 80 mm)	17 x 2
Maximum loop length	Longest length of a loop in the area, 20 to 200 m.	100 m	120 m
Choose perimeter zone when placing	After the connector point click the walls of the perimeter zone.	off	on for rooms with exterior walls
Perimeter zone › Width	How far the perimeter zone reaches from the wall into the area, 100 to 5000 mm.	1000 mm	800 mm
Perimeter zone › Spacing	On-center spacing in the perimeter zone, 30 mm up to the on-center spacing.	half the spacing (75 mm)	50 mm
Property fields of the next loop	Values for every newly placed loop (only those it does not yet carry).	no values	system "RFH-2F"
Always show before placing	The dialog box with the values before "Place loop".	on	off for fast work

Palette, Manifold page

Setting	What it does	Default	Example
Template	A manifold template brings all values, including the name.	(no template)	"Apartment manifold"
Outlets	Number of outlets, 1 to 24 (grayed out with "to match the loops").	4	8
to match the loops	As many outlets as loops are attached – updated after every assignment.	on	off for a fixed manifold with spare outlets
With cabinet	Cabinet as an outline.	on	off
Show the manifold dialog box before inserting	The manifold dialog box first.	on	off
Show properties before inserting	The property fields of the manifold first.	off	on

Palette, Leaders page

Setting	What it does	Default	Example
Center-to-center distance	Distance supply/return, center to center, 20 to 300 mm – for the next drawing and connecting; remembered at the manifold.	50 mm	60 mm
Width (leader corridor)	Width of the next corridor, 100 to 5000 mm; during a run with `Enter` or the check mark.	1000 mm	1200 mm
Edge	Center · flush left · flush right – what the clicked line is.	Center	flush left along a wall
Spread across the width	The pipes in the corridor spread over the whole width instead of close to the edge.	off	on in a wide hallway
Spacing increment (while drawing, key A)	Rounding of segment lengths, 10 to 1000 mm; remembered.	100 mm	50 mm
Leaders in the insulation layer	May run under heated areas – per drawing.	off	on when the pipes lie below the screed

Palette, Output page, and list options

Setting	What it does	Default	Example
Evaluate visible objects only	Objects on layers turned off or frozen are left out of every list.	off	on
List options › Design list …	Columns, sorting, totals, filters, Excel template in the list layout dialog box.	default template	own template "Loops office"
List options › Quantities across the project / across xrefs	Together, per drawing or per level.	-	per level
List options › Output	As a table in the drawing · As a file (CSV or Excel) · Ask each time.	Ask each time	As a file
List options › Text height	Text height of the table in drawing units.	100 mm	150 mm
List options › Format	CSV (text, separator) or Excel workbook (.xlsx).	CSV	Excel
List options › File name	From the drawing name with suffix (and folder; empty = next to the drawing) · Fixed file name · Ask each time.	from the drawing name, no suffix	suffix "_loops"
List options › Separator	Separator of the CSV file.	semicolon	tab
List options › Ask before overwriting a file	Question if the file already exists.	on	off
List options › Open file after writing	Open the file afterwards.	on	off

Room dialog box

Field	What it does	Example
Number	Room number; empty = none.	1.02
Name	Room name.	Bathroom
Room temperature	0 to 40 °C – value for tag, loop text and list.	24
Heat loss	In W, empty = no value; not negative.	620
Edge distance	0 to 2000 mm; if it changes and the room has areas, they are rebuilt.	120
Key figures	For information: area, perimeter, height (if known), level (from the project, otherwise "not assigned to a level"), heated areas with area, divisions.	–

Place loop dialog box

Field	What it does	Default
Pattern, spacing, pipe, maximum loop length	As in the palette, Loops page.	counterflow, 150 mm, 16 x 2, 100 m
Choose perimeter zone when placing	Afterwards click the walls of the perimeter zone; without the check box width and spacing are grayed out.	off
Width, spacing	Width (100 to 5000 mm) and on-center spacing of the perimeter zone (30 mm up to the on-center spacing).	1000 mm, half the spacing
Always show before placing	Without the check box the dialog box no longer comes – switch it back on in the palette.	on

Loop dialog box

Field	What it does	Example
Number	Loop number – at a manifold "manifold.outlet" (1.03), without a manifold numbered through. It applies to the first loop of the area.	1.05
Pattern	Counterflow or serpentine – the loop is re-placed in the new pattern.	serpentine
Spacing	On-center spacing, 30 to 1000 mm.	100
Pipe	Outside diameter x wall thickness, for example 16 x 2.	17 x 2
Perimeter zone › Width, spacing	Width (above 0) and spacing (30 mm up to the on-center spacing) of the perimeter zone of this loop. Which walls: "Choose perimeter zone".	800 / 75
Connector point automatic	Releases a connector point chosen by hand – only available if one is chosen.	–
Key figures	For information: length in the area (number of loops in the area), manifold and outlet.	–
chosen by hand (stays with Assign loops)	Only with an assignment by hand: without the check box "Assign loops" may move the loop to another outlet.	–

Room tag dialog box

Setting	What it does	Default
Lines › Area	The room area in m² below number and name.	on
Lines › Room temperature	The room temperature in °C.	off
Lines › Heat loss	The entered heat loss in W; without a value the line is dropped.	off
Shape	rectangular (frame) · circle · no frame. In a circle only number/name and the first selected line.	rectangular (frame)

Loop annotation dialog box

Setting	What it does	Default
Lines	Loop number · room (number and name) · room area · heated area · perimeter zone (length – spacing) · inner zone (length – spacing) · length of the leaders · total length (heated area + leaders) – on; pattern and spacing · room temperature · heat loss of the room · manifold and outlet · level – off. Arrows = order.	the first eight on
Shape › framed	Frame around the text.	on
Shape › with leader line	Leader line to the loop; without it only the text stands (it stays linked).	on
Color loops when annotating	Every annotated loop gets its own color (supply/return and both leaders); at a manifold the color of its outlet, neighbors never the same.	on
Loop text in this color too	Loop text, leader and frame in the color of the loop.	on
Colors	The palette in order (at least two); Add …, Change …, Remove, ◀ ▶, Default.	twelve colors, all readable on white paper (contrast at least 3 : 1)
Color annotated loops now	Color all loops of the drawing already annotated now (the settings are saved).	–
Reset colors	All loops back to the display of their object type, loop texts as their annotation style.	–

Gear menu › Display

Object type	Default layer (after LuaCAD_HZG_)	Default color (by layer)
Room	Floor heating room	150 (blue)
Heated area	Floor heating field	30 (orange)
Exclusion area	Floor heating helper area	8 (gray)
Loop	Floor heating circuit	1 (red)
Loop supply (separated)	Floor heating flow	1 (red)
Loop return (separated)	Floor heating return	5 (blue)
Supply leader (and manifold row)	Floor heating flow	1 (red)
Return leader (and manifold row)	Floor heating return	5 (blue)
Manifold (cabinet)	Floor heating manifold	7 (black/white)
Leader corridor	Floor heating supply zone	40

Setting	What it does	Default
Button per type	Layer (from the drawing), color, linetype, lineweight; linetype and lineweight by layer by default.	default layer, everything by layer
Default	This type back to default.	–
Loop separated into supply and return (red/blue)	Off: the whole loop in the display "Loop". On: supply and return each in their own; the rows "(separated)" become available. The leaders always stay supply/return.	off
Hatch (leader corridor)	Lines (spacing and angle), solid fill or a pattern, with color; without an own color the color of the display.	lines at 45° with 100 mm spacing

The layer is found through its key: you may change names, colors and linetypes in the GstarCAD Layer Manager – the assignment stays. The layer names shown are the English ones; they appear in the language of the program.

Manifold dialog box

Field	What it does	Default	Example
Template, Save as template, Delete template	Choose a template (its values fill the fields); for a new one type a name and save – the same name replaces; applies to all drawings.	–	"Manifold 8"
Name	For list and annotation; empty = the next free one (V1, V2 …).	empty	M-2F
Outlets	Number of outlets (loops), 1 to 24.	4	8
Number to match the loops	As many outlets as loops are attached; without the check box the number applies.	on	–
Rows	Supply and return – fixed, for information only.	–	–
Outlet spacing	Distance between two outlets along the manifold, at least 20 mm.	50 mm	55 mm
Row spacing	Distance between the two rows across the manifold, at least 20 mm.	50 mm	60 mm
Outlet DN, supply inlet DN	Nominal size of the outlets or the supply inlet (number, empty = none).	15, 25	20, 32
With cabinet	Cabinet as an outline.	on	–
Width	Width of the cabinet; empty or 0 = from the number of outlets (the tooltip gives it). Too narrow = message.	empty	800 mm
Depth	Depth of the cabinet.	150 mm	110 mm
Outlet side	front (from the cabinet into the room) · back (through the back wall) – the arrow in the cabinet shows it.	front	back for pipes from the next room
Always show before inserting	Without the check box the manifold hangs at the cursor right away next time (switch back on in the palette).	on	–

Gear menu › Manifold options

Setting	What it does	Default
Systems of the rows › Supply	System of the supply row (list of the Piping systems).	Default: the system of the heating supply
Systems of the rows › Return	System of the return row.	Default: the system of the heating return
Display › Manifold (cabinet)	Layer, color, linetype, lineweight of the cabinet; Default = back.	default manifold layer, by layer
Display › Supply / return leader (and manifold row)	Look of the leaders and of the rows of the manifold.	default supply / return layer, by layer

Further settings

Entry	What it controls	Default
Gear menu › Heated areas at leader corridors	Ask · Always adapt · Always keep.	Ask
Gear menu › Drawing units …	Unit of new parts and of the fields – for all plug-ins.	-
Gear menu › Property fields …	Which fields exist – for all plug-ins.	–
Gear menu › Author …	The name in output – for all plug-ins.	empty
Gear menu › Help › Getting started active	Page cards and insertion help for this plug-in.	on

Typical notes and errors

Message	What it means	What to do
There is no room of Floor Heating – please click into a room or on its edge.	The click hit no room.	Click into the room.
There is no closed polyline …	Room from polyline: open polyline or nothing.	Close the polyline or pick points.
A room needs at least three corners. · The outline is not a valid polygon …	Too few or duplicate points.	Pick again.
Note: the new room overlaps room …	Two rooms overlap.	Check the outlines.
Room …: no heated area possible (too narrow for the edge distance).	Room too narrow.	Smaller edge distance (Change room).
There is no heated area – first "Generate heated areas".	Place loop without an area.	Generate heated areas.
The line does not divide any heated area …	Dividing line does not cross an area completely.	Draw from wall to wall.
These areas are not separated by a division …	Join without a division between them.	Click only areas at a division.
The area is too narrow for supply and return with the minimum bend radius …	No loop fits.	Smaller spacing or smaller pipe.
The area is separated at a narrow point – it is divided into n partial areas …	Note.	Check the result.
A hole in the area could not be bypassed …	Exclusion area in the middle of the area.	Divide the area at the exclusion area.
The counterflow pattern is connected at a corner …	Connector point in the middle of a wall.	Accept or choose serpentine.
A loop would be longer than the maximum loop length … – the area is divided into n … loops.	Maximum loop length reached.	Intended; otherwise adjust the maximum loop length.
Warning: the loop is … long – more than the maximum loop length … · Loop … with leaders … – longer than the maximum loop length …	Too long with the leaders.	Manifold closer, divide the area.
This only works with a loop … – first "Place loop".	Area without a loop clicked.	Place a loop first.
There is no wall of this room – please click closer to the wall.	Choose perimeter zone.	Closer to the wall.
Serpentine: a perimeter zone across the rows cannot be laid closer …	Serpentine and perimeter zone across.	Choose counterflow.
The spacing must be between 30 and 1000 mm. · Please enter the pipe as outside diameter x wall thickness … · The perimeter zone needs a width above 0 … · Please enter a valid maximum loop length …	Input error in the dialog box.	Correct the value.
The room temperature must be between 0 and 40 °C. · The edge distance must be between 0 and 2000 mm. · The heat loss must not be negative.	Input error in the Room dialog box.	Correct the value.
The center-to-center distance must be between … – the previous value applies. · The width of the leader corridor must be between …	Palette value outside the allowed range.	Type a value within the range.
There is no manifold yet – first "Insert manifold".	Connecting without a manifold.	Insert a manifold.
No loop is attached to this manifold yet – first "Assign loops".	Empty manifold.	Assign.
n loop(s) without a free outlet …	Manifold too small.	More outlets or "to match the loops".
Manifold … already has the highest number of 24 outlets …	Limit reached.	Insert a second manifold.
No route found for n loop(s): … – the leader ends before the loop or is missing …	No route around the heated areas.	Continue by hand with "Single", a leader corridor or the insulation layer.
Caution: n crossing(s) in the bundle … – "All loops" reorders the outlets.	Individual loop crosses others.	"All loops of a manifold".
n loop(s) without an orthogonal route – drawn straight, please check.	Fallback.	Draw by hand.
Not drawn from the outlet to the loop – nothing changed.	Run by hand not started at the outlet.	Start at the outlet.
Loop …: the leader is drawn by hand – cross and swap only work on automatic …	Cross on a leader by hand.	Automatic again, then cross.
There is no room in front of the cabinet for the crossing – they change sides inside the cabinet.	Note.	–
There is no straight segment of a leader. · It does not go that far …	Move.	Another segment, less far.
…: the supply/return cannot be followed unambiguously …	Grip on a leader, partner unclear.	Redraw the partner yourself or stretch both together.
…: supply and return now come too close or cross …	After a grip.	Redraw.
Loop … is now by hand … · Heated area … is now by hand … · Leader of loop … is now by hand …	Note after a grip.	"Automatic again" if needed.
The surface of a leader corridor follows its centerline …	Corridor surface deformed.	Change the centerline.
The two corridors do not meet with their ends … · The two corridors do not touch …	Join.	Place corridors end to end or as a tee.
A leader corridor needs at least two points – "Delete" removes it completely.	Remove vertex on the last segment.	Delete.
LuaCAD: layer "…" is locked – part not changed.	Part on a locked layer.	Unlock the layer and repeat.
n issue(s) – details in the log.	"Check" found something.	Read the lines above.
That did not work – see the log.	An unexpected error.	Repeat; otherwise send the log to support.

Floor Heating reference

#The palette buttons

#All keys at the cursor

#The gear menu

#Dialog boxes

#Display

#Drawing units

#Questions

#Every setting in detail

#Gear menu › Display

#Further settings

#Typical notes and errors