6.2.3. Manifold<br>

### 6.2.3. Manifold

Radiant heating manifold differs from that used in radiator heating systems. Radiant heating system designed by the program does not have to include a manifold only in case of a co-current system or when a circuit with return temperature restriction is used.

Manifolds used in radiant heating must be associated with equipment catalogues.

Button on the “Radiant” toolbar:

Appearance on screen (plan / schematic view):

“Manifold” component data:

Symbol

Text field. The symbol is defined automatically, when the manifold in the drawing is within a room, or it can be specified by the user. The symbol is used to identify the manifold when editing data and in the tables of results.

No. of outlet pairs

Numerical field. Number of spare ports, which may be used later. These are not accounted for in calculations. When, for instance, only radiant heating calculations are done, they may be treated as designed for connecting additional radiators not included in the given project. This enables specifying in the bill of materials a manifold with the number of outlets greater than the number of connected heating circuits.

of that spare

Numerical field. Number of spare ports, which may be used later. These are not accounted for in calculations. In case of radiant heating calculations, they may be treated as designed for connecting additional radiators. This enables specifying in the bill of materials a manifold with the number of outlets greater than the number of connected heating circuits.

Type

Selection field. Manifold type selected from catalogue. If “(default)” is specified, then the type specified in general data ia adopted. If a manifold with control elements is selected, valve data are displayed in the table below the manifold data.

Supply/return arrangement

Selection field. The position of the supply part of the manifold in relation to the return part (for angle of 0°). This only has an effect on the drawing and enables the adaptation of the manifold drawing to the actual arrangement of the supply and return parts of the manifold. Opposite arrangement of the parts of the manifold may result in the crossing over of pipes in the drawing.

Cabinet type

Selection field. Select cabinet type from catalogue. If “(default)” is specified, then the type specified in general data is adopted.

Cabinet axis above floor [m]

Numerical field. Distance between cabinet axis and the floor. The required number of pipes to construct vertical route will be accounted for in the bill of materials.

Show RH data

Selection field. Here you can change the display of additional RH data in the table. The default setting is “No”. When you enter “Yes”, additional data fields appear in the table.

Dt/Dq min OZ

Numerical field. Minimum temperature drop for HZ in occupied zone.

Dt/Dq max OZ

Numerical field. Maximum temperature drop for HZ in occupied zone.

Dt/Dq min PZ

Numerical field. Minimum temperature drop for HZ in peripheral zone.

Dt/Dq max PZ

Numerical field. Maximum temperature drop for HZ in peripheral zone.

Max DeltaP [kPa]

Numerical field. Maximum pressure drop in HZ.

Component status

Selection field. Select from list the current status of component: existing or under design. Affects only bill of material.

Draw label

Selection field. Specify whether the component label is to be drawn in the sheet. Then manifold symbol appears in the drawing. The default setting is “No”.

Valves other than std.

Selection field. Manifold valves are not independent components; they constitute manifold fittings. Depending on manifold type, valves may be indicated – when they are factory-mounted on the manifold. When the field is set to “No”, then the factory-mounted valve is adopted in calculations. If “Yes” is specified, then during calculations a valve matching the flow rate is sized within the range applicable to the manifold.

Supply valve ...

Selection field. For selecting valve type placed on the supply end.

Ret. valve ...

Selection field. For selecting valve type placed on the return end.