Distribution manifold for underfloor heating
TO 202 - TO 216
HERZ stainless steel manifolds can be used for underfloor, wall, and ceiling heating and cooling, as well as in combination with radiators. They allow for easy installation, use, and maintenance and are compatible with other HERZ products.

Components:
  • - Stainless steel housing,
  • - vent valves,
  • - flow meter 3l/min red,
  • - thermostatic inserts,
  • - drain valve G1/2",
  • - stop plug,
  • - brackets for manifold.
Category:
  • DIMENSIONS
  • USAGE
  • QUALITY
  • TEHNICAL DATA
  • INSTALLATION
  • DOCUMENTATION
Art. Ident Code EAN Circuits PN L H H1 L1 L2 L3 L4 G G1 Cabinet
TO 202 1545202 1 8632 02 9004174019968 2 6 194 313 200 50 22 39,9 65,6 1’’ 3/4’’ 1941201
TO 203 1545203 1 8632 03 9004174024757 3 6 244 313 200 50 22 39,9 65,6 1’’ 3/4’’ 1941201
TO 204 1545204 1 8632 04 9004174024764 4 6 294 313 200 50 22 39,9 65,6 1’’ 3/4’’ 1941201
TO 205 1545205 1 8632 05 9004174024771 5 6 343 313 200 50 22 39,9 65,6 1’’ 3/4’’ 1941202
TO 206 1545206 1 8632 06 9004174024788 6 6 393 313 200 50 22 39,9 65,6 1’’ 3/4’’ 1941203
TO 207 1545207 1 8632 07 9004174024795 7 6 443 313 200 50 22 39,9 65,6 1’’ 3/4’’ 1941204
TO 208 1545208 1 8632 08 9004174024818 8 6 493 313 200 50 22 39,9 65,6 1’’ 3/4’’ 1941204
TO 209 1545209 1 8632 09 9004174024832 9 6 543 313 200 50 22 39,9 65,6 1’’ 3/4’’ 1941205
TO 210 1545210 1 8632 10 9004174024849 10 6 593 313 200 50 22 39,9 65,6 1’’ 3/4’’ 1941205
TO 211 1545211 1 8632 11 9004174024856 11 6 643 313 200 50 22 39,9 65,6 1’’ 3/4’’ 1941205
TO 212 1545212 1 8632 12 9004174024863 12 6 693 313 200 50 22 39,9 65,6 1’’ 3/4’’ 1941206
TO 213 1545213 1 8632 13 9004174028403 13 6 743 313 200 50 22 39,9 65,6 1’’ 3/4’’ 1941206
TO 214 1545214 1 8632 14 9004174028410 14 6 793 313 200 50 22 39,9 65,6 1’’ 3/4’’ 1941206
TO 215 1545215 1 8632 15 9004174028434 15 6 843 313 200 50 22 39,9 65,6 1’’ 3/4’’ 1941207
TO 216 1545216 1 8632 16 9004174028441 16 6 893 313 200 50 22 39,9 65,6 1’’ 3/4’’ 1941207
HERZ stainless steel manifolds are designed for use in underfloor, wall, and ceiling heating and cooling systems. They are used in combination with HERZ shut-off or ball valves for optimal system performance. The compact design allows easy installation in distribution cabinets or directly on the wall. Integrated air vent and drain valves enable quick venting and system drainage.

The manifolds are compatible with other HERZ components, allowing flexible system planning. Various models are available with different numbers of heating circuits. High-quality materials ensure long service life and resistance to corrosion.
Material:
The manifolds are made of high-quality stainless steel, ensuring excellent corrosion resistance and long service life. Other components, such as shut-off and thermostatic valves, are made of brass according to EN 12164.

Operating Conditions:
  • Maximum operating pressure (with flow meter): 6 bar
  • Test pressure: 10 bar at 20 °C
  • Maximum allowable temperature (with flow meter): 70 °C
  • Minimum operating temperature: 2 °C

Medium:
The manifolds are suitable for use with heating water in compliance with ÖNORM H5195 and VDI 2035 standards. The use of ethylene or propylene glycol in a 25–50 % mixing ratio is allowed, following the manufacturer’s recommendations. EPDM seals are not resistant to mineral oils, so their use in such systems is limited.

Connections:
  • Manifold inlet: internal thread G1˝ (ISO 228-1)
  • Heating circuit outlets: external thread G3/4˝ with cone sealing
  • Number of heating circuits: from 2 to 12 (up to 16, depending on the model)

Integrated Components:
  • Shut-off valves on the supply side (depending on the model)
  • Thermostatic valves on the return side (depending on the model)
  • Air vent valves for air removal from the system
  • Drain valves G1/2˝ for system drainage
  • Mounting brackets for wall or distribution cabinet installation

Flowmeter Valves
The factory setting is fully open. The set flow volume can be read directly through the inspection glass. To adjust the flow volume, use the plastic adjustment key on top of the knurl and rotate it clockwise or counterclockwise.

Drain Valves
The drain valve is used for filling and draining the system. After use, the valve must be closed. Under no circumstances should the valve remain permanently open and integrated into the distribution system.


Thermostatic Valves M28x1.5
They are opened by spring force and can be closed using a protective cap, manual drive, or thermal actuator. Protective caps are mounted on thermostatic valves as mechanical protection during installation and must be replaced with suitable electrical or mechanical drives after commissioning. The thermostatic upper parts can be equipped with a manual drive 1 9102 80 or thermal actuators, which must be ordered separately. Thermal actuators are available in 24V or 230V, NC (normally closed) or NO (normally open) versions. The thermal drives can be operated via room temperature control or wireless control. Room temperature and wireless controls are described in separate data sheets.
Note! Thermostatic valves and flowmeters are not shut-off devices. Unfilled heating circuits must be closed with a cap at the outlet.

Air Vent Valves
An air vent valve is installed on both the supply and return rods. The valves can be operated with the HERZ universal key (1 6625 00).

Brackets
HERZ rod distributors can be mounted using the supplied brackets directly on a wall or inside a distributor cabinet. The mounting position is arbitrary.

Compatibility:
The manifolds are compatible with all HERZ components, including HERZ PIPEFIX adapters, shut-off, and ball valves. We recommend using HERZ shut-off valves for optimal system performance.
HERZ floor heating manifolds allow quick and easy installation in a distribution cabinet or directly on the wall. The integrated brackets ensure stable attachment and flexible mounting positioning.

All connection threads must be sealed with appropriate seals to prevent leaks. When connecting pipes, the use of HERZ PIPEFIX adapters is recommended for easy installation. After installation, it is necessary to check the proper operation of all valves and air vents. Maintenance includes regular inspection of valve functionality and removal of any impurities.

Example of installation with set TO101: