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HeatBloC®

Heating

technology

Thermax - DN 20

Field of application: for wall-mounted boilers
Recommended application range:
K31: up to 23 kW; 20 K up to 1000 l/h
K32: up to 19 kW; 20 K up to 820 l/h

SKU
323621
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Our offer is exclusively aimed at corporate clients.

Manufacturer:
PAW GmbH & Co. KG
Böcklerstr. 11 31789 Hameln
Germany
info@paw.eu
Operating data
Max. operating temperature: 110 °C
Dial thermometer: 0 - 120 °C
Max. operating pressure: 6 bar
Temperature difference: 20 K
Output unmixed: 23 kW
Output mixed: 19 kW
Flow rate unmixed: up to 1000 l/h
Flow rate mixed: up to 820 l/h
Kvs value Thermax distribution manifold: 7,8
Kvs value mixed: 3,7
Kvs value unmixed: 4,7
Recommended range of application unmixed: up to 23 kW
Recommended range of application mixed: up to 19 kW
Equipment
Dial thermometer: 0 - 120 °C
Shut-off valves: Ball valves with handle
Dimensions
Height: 400 mm
Width: 408 mm
Nominal diameter: DN 20 (¾")
Installation length: 335 mm
Connection generator: 1" ext.thread / ¾" int.thread
Connection consumer: ¾" int. thread
Centre distance: 90 mm
Total depth without distance pieces: 95 mm
Total depth with distance pieces: 195 mm
Materials
Valves and fittings: Brass
Gaskets: EPDM / AFM34
Insulation: EPP / ABS
The Thermax system has been designed for applications with two different temperature levels.
An application example: it can be connected to a consumer with a high flow temperature (such as a radiator) and a consumer with a low flow temperature (such as a radiant floor heating).
The Thermax distribution manifold is equipped with an integrated, adjustable bypass. This bypass can be closed (distribution manifold is pressure tight - for applications with boilers without internal pump) or it can be opened (in this case a low-loss bypass is activated in the Thermax distribution manifold - for applications with an internal pump).

The modular distribution manifold system Thermax is a preassembled group of fittings for heating circuits.
It consists of a Thermax distribution manifold, two Thermax heating circuit modules and a design insulation with optimised function.

Thermax can be mounted directly to the wall or with distance pieces at a distance of 100 mm to the wall. This means that additional flow lines to the boiler can be installed below the Thermax.

Complete hydraulic separation between the connected circuits and the boiler is possible.

The adjustable bypass (0 - 100%) of the Thermax manifold guarantees forced circulation in the boiler when the bypass is open.

Two different heating circuits can be selected:
HeatBloC® direct circuit K31 - for modulating temperature heating
HeatBloC® mixed circuit K32 with 3-way mixing valve - for heating systems controlled by a mixing valve

Various pumps can be selected:
Wilo-Stratos PICO 15/1-6, Wilo-Yonos PARA RS 15/6-RKA, Wilo Para 15/6-43
Grundfos Alpha2.1 15-60, Grundfos UPM3 Auto L 15-70 PP3

All necessary fittings included

All installation positions possible

Pumps can be separated

Ball valve in the flow and the return line

Immersion sleeves integrated in the ball valves to install flow and return temperature sensors

Mixing valve with electric actuator

Flow is on the right, can be simply modified on site

Safety instructions
The installation and commissioning as well as the connection of electrical components require technical knowledge commensurate with a recognised vocational qualification as a fitter for plumbing, heating and air conditioning technology, or a profession requiring a comparable level of knowledge [specialist].
The following must be observed during installation and commissioning:
- relevant local and national regulations
- accident prevention regulations of the professional association
- instructions and safety instructions mentioned in these instructions.

NOTICE
Damage to property!
Do not apply a torque of more than 40 Nm to the union nuts on the plastic return pipe. A higher torque may cause damage to the plastic pipe (max. torque < 40 Nm).

NOTICE
Material damage due to mineral oils!
Mineral oil products cause lasting damage to seals made of EPDM, whereby the sealant properties get lost. We do not assume liability nor provide warranty for damage to property resulting from sealants damaged in this way.
- It is imperative to avoid that the EPDM sealing elements of the unit get in contact with substances containing mineral oils.
- Use a lubricant based on silicone or polyalkylene and free from mineral oils, such as Unisilikon L250L and Syntheso Glep 1 of the Klüber company or a silicone spray.