Designing of radiant heating floor and wall installation

Product	InstalSystem 5
Type of article	DESIGNING LESSON
Source for translation	2022-08-30

Scope of lesson

This article presents the method of designing radiant heating systems (dry and wet):

The example shown is based on a design for a single-family two-storey house with no basement.

Modules and program configuration

The InstalSystem 5 includes the following module:

Radiant systems.

Webinars

We encourage you to see the video from our webinars on the topics described in this article:

The webinars present the topics described in this article, but they aren’t a recording of this lesson.

Project file

The project file used in this lesson: Radiant heating floor and wall system in single family building (example for the lesson).

Inital state

The project includes a complete set of default data defined in a template.
The rooms arangement was based on base drawings in DWG format. More details in: Table of project example.

Steps to perform

Designing an installation - wet radiant systems

Editing general data and creating the building structure

Open new project file

Launch InstalSystem 5.
Open a new project and choose the preferred file version. For more information, see: Project and application management.
Select the appropriate template. For more information, see: Template files.

Define catalogues and general data

For more information, see: Using catalogs and catalogs data in the project.
Declare General data in default data:

Storeys management - add the required number of storeys. For more information, see: Preparation of building structure.
Catalogues - choose catalogues according to the list in the Project table with regard to:
- Radiant systems
- Pipes and pipe fittings
- Insulation
- Valves and fittings
Thermal systems - append information for:
- Distribution system
  - Types and default data
- Radiant systems
  - Floor systems
  - Wall systems
  - Manifolds, fittings and control.

Prepare building structure

Prepare the building structure as described in: Preparation of building structure - Rooms layout.
The following data need to be modified:
- For the Room components of the Bathroom type, in the Data table window change the value in the Design temp. field to 24°C, for the Room components of the Lobby type change the value to 16°C.
- Define the maximum permissible temperature of floor surface by selecting the appropriate room type in the Heating section.
- For unheated rooms enter the heat loss coefficient equal to "0". For more information, see: Preparation of building structure.
Verify the correctness of the structure created in 3D view. For more information, see: Viewing the created building structure.

Editing an installation - wet radiant system

Inserting Heating/Cooling Zone components

Insert Heating/Cooling Zone components in selected rooms.

1. Inserting Heating/Cooling Zone
Cut out appropriate fragments of: Heating/Cooling Zone and/or change their shapes to adapt them to occupied areas (stairs, bathtubs) in rooms.
Divide selected areas of Heating/Cooling Zone with regard to required expansion allowances.

Editing heating/cooling zone data

Selecting a covering.
Mark selected Heating/Cooling Zone components and specify the type of Covering in Data table window.

2. Covering
Change type for Heating/Cooling Zone.
1. Mark these Heating/Cooling Zone where significant surface area is occupied by pipe feeds and change their type to Heated/cooled by pipe feeds. Remember in this case to remove connections with the manifold.
2. Mark these Heating/Cooling Zone where no loops are to be arranged and change their type to Without pipes.
  
  3. Typ Heating/Cooling Zone.
Determining the presence of peripheral zones.
Specify and configure Peripheral zone (PZ).For more information, see: Defining a peripheral zone.

Inserting Manifold components

Insert Manifold on every storey. Manifold is inserted in the drawing together with manifold cabinet.
For more information, see: Manifolds for radiant system and their accessories.

4. Inserting Manifold.

Pipe feeds routing

Connect Heating/Cooling Zone with manifolds using Pipe feeds route. Pipe feeds route enables automatic generation of pipe feeds.
For more information, see: Editing pipe feeds in a radiant system.

5. Inserting Pipe feeds route.

Editing an installation - feed to manifolds

Inserting Source

Insert Source on the lowermost storey.

6. Inserting Source.

Inserting risers

Insert Riser, assign a symbol to it and define its extent (from storey 0 to storey 1).
For more information, see: Connecting storeys with the "Stack" element.

7. Inserting Riser.

Distribution

Connect Source, Manifold, Riser with each other by drawing the network using the Pipe-run component and the AUTO and ORTO modes.

8. Connecting system components.
(Optionally) use the Automatically connect terminal units function.

Inserting fittings

Insert Valve onto pipe-runs.

9. Inserting Fittings.
Select Valve type in Data table.

10. Valve type.
Use Copy - Paste to insert fittings of the same type onto other pipe-runs.

Verifying correctness of installation structure

Verify the correctness of the installation structure using the Check connections function (Key shortcut: Shift + F2).
Verify the correctness of the installation structure and find conflicts using 3D view.
For more information, see: Verification of the correctness of installation structure.

Adjusting installation parameters - manual modifications (optional)

Change feed temperature of the radiant system by using control circuits, which can be found in General data window in Thermal systems/Sources.

11. Control circuits.
Change pipe spacing and temperature drop in individual loops.
For more information, see: Interactive calculations of radiant systems.
Change structure of heating floor\wall.

12. Floor build-up ....
Change Max. press. drop in circuit.

13. Max. press. drop in circuit.

Calculations and diagnostics

Launch complete calculations by clicking the icon in the Calculations section of the toolbar.
Open the Diagnostics window by selecting it in the list of windows or by pressing F8.
Carry out an interactive verification of results in the Interactive radiant systems calculations window.For more information, see: Interactive calculations of radiant systems.
After calculations are completed verify the messages listed in the Diagnostics window. If error messages are displayed, these must be eliminated in the first place.
For more information, see: Calculations and diagnostics.
Particular attention must be paid to:
1. Coverage of heat or cold demand.
2. Correct routes of feeds generated automatically.
3. Layers of heating/cooling surfaces selected to take account of undesirable differences in the heights/thicknesses of adjacent surfaces.

Editing an installation and its parameters

At this stage manual modification can be made of the installation and its parameters within the following scope:

Modifying the dividing line of element Heating/Cooling Zone to elements Heating-cooling surface

For more information, see: Modifying the dividing line after automatic division.

Recalculation and verification of results

Verify calculation results paying special attention to:
- coverage of heat demand in rooms,
  
  14. Coverage of required heating output.
- sized layers in Heating/cooling floor, to see if there are no undesirable differences in height/thickness in adjacent areas.
  
  15. Floor build-up ....
- bills of materials.
  
  16. Bill of materials - heating / cooling - List of radiant heating components.

Generating schematic views

Schematic views should be created as described in: Automatically generate schematic views.

Prepare drawing for printing/export

Label

Insert required labels onto components.
Configure the label appearance (opc).
For more information, see: Item 5. Component appearance configuration and editing parameters configuration

17. Inserting a Label.

Manifold table

Insert Manifold table.
For more information, see: Manifold table.

Structure cross section drawing

Insert Structure cross section drawing. Rescale and configure, if necessary.

18. Structure cross section drawing.

Drawing frame

Insert Drawing frame.
Select Drawing frame in Data table .

19. Inserting Drawing frame.

Drawing chart

Insert Drawing chart.
Enter the required data in Data table.

20. Drawing chart.

Print/export results

Print/export drawings.
Print/export tables.
For more information, see: Export / print results and drawings.

Editing an installation - dry radiant systems

The course of designing dry systems essentially follows that of the wet systems.
Additionally it is possible within a Heating/Cooling Zone type component to insert dry system plates and cut them to fit within room borders or to fit to the edges of other plates. The resulting quantities of plates are then included in the bill of materials. In addition, when routing the feeds and loops, it is necessary to take into account the arrangement of grooves in the dry system plates.

Editing general data and creating the building structure

Specify default data in General data:

On the Floor systems tab, field Default system / fastening method, select the dry system of the particular manufacturer.
Other data in accordance with: Editing general data and creating the building structure.

Editing an installation - dry radiant systems

Inserting Heating/Cooling Zone components

Insert Heating/Cooling Zone components in selected rooms. For more information, see: Heating/cooling zone.

21. Inserting Heating/Cooling Zone
Cut out appropriate fragments of: Heating/Cooling Zone and/or change their shapes to adapt them to occupied areas (stairs, bathtubs) in rooms.
For more information, see: Openings in heating-cooling areas zone.

Inserting dry system plates

Add Dry system plate components to the project. For more information, see: Inserting plates in dry floor heating system.

22. Inserting plates in dry floor heating systems.