PAW HeatBloC K32-DN 25 User manual

PAW GmbH & Co.KG
Böcklerstr. 11, D-31789 Hameln, Germany
Phone: [phone], Fax: [phone]
E-mail: [email protected], Web: www.paw.eu
2015/03 9936052x-mub-en – V09 1
Installation and Operation Instructions
HeatBloC K32 - DN 25

1General information
2 9936052x-mub-en – V09 2015/03
Item no. 9936052x-mub-en - Version V09 – Issued 2015/03
Translation of the original instructions
We reserve the right to make technical changes without notice!
Printed in Germany – Copyright by PAW GmbH & Co. KG
PAW GmbH & Co.KG
Böcklerstr. 11
D-31789 Hameln, Germany

1General information
2015/03 9936052x-mub-en – V09 3
Contents
1General information .........................................................................................................4
1.1 Scope of these instructions ..........................................................................................4
1.2 Designated use ............................................................................................................4
2Safety instructions ...........................................................................................................5
3Product description..........................................................................................................6
3.1 Equipment....................................................................................................................6
3.2 Function .......................................................................................................................7
3.2.1 3-way mixing valve [specialist] ..............................................................................8
3.2.2 Pump [specialist]................................................................................................. 11
3.2.3 Check valve ........................................................................................................11
3.2.4 Accessories: actuator (not included in delivery)...................................................12
4Assembly and installation [specialist]..............................................................................13
4.1 Installation of the modular distribution manifold / wall bracket with mounting plate ..... 13
4.2 Installation of the HeatBloC and commissioning......................................................... 14
4.3 Accessories: compression fitting (not included in delivery) ......................................... 16
5Scope of delivery [specialist]..........................................................................................17
6Technical data...............................................................................................................18
6.1 Pressure drop and pump characteristics .................................................................... 19

1General information
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1General information
Carefully read these instructions before installation and commissioning.
Save these instructions in the vicinity of the installation for future reference.
1.1 Scope of these instructions
These instructions describe the function, installation, commissioning and operation of the mixed
HeatBloC K32.
For other components of the installation, such as pumps, controllers or the distribution manifold,
see the manufacturers' instructions. The chapters called [specialist] are intended for specialists
only.
1.2 Designated use
The HeatBloC may only be used in hydronic heating closed-loop systems taking into
consideration the technical limit values indicated in these instructions.
The HeatBloC must not be used in domestic water applications.
Improper usage excludes any liability claims.
Only use PAW accessories with the HeatBloC.
The wrapping materials are made of recyclable materials and can be disposed of with
recyclable materials.

2Safety instructions
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2Safety 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 this manual
CAUTION
Personal injury and damage to property!
The HeatBloC must only be used in hydronic heating closed-loop systems filled
with heating water according to VDI 2035 / Ö-Norm H 5195-1.
The HeatBloC must
not
be used in domestic water applications.
NOTICE
Material damage due to mineral oils!
Mineral oil products cause lasting damage to seals made of EPDM, whereby the sealant
properties are 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 EPDM gets in contact with substances containing
mineral oils.
Use a lubricant based on silicone or polyalkylene and free of mineral oils, such as
Unisilikon L250L and Syntheso Glep 1 of the Klüber company or a silicone spray.

3Product description
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3Product description
The K32 HeatBloC is a preassembled fitting group for hydronic heating closed-loop systems.
The pump can be isolated by means of the ball valves and the mixing valve and can thus be
maintained without draining of the system.
The PAW HeatBloC is designed such that it can be directly mounted onto a PAW distribution
manifold or a mounting plate with thread connections. With adaptor connections, PAW
HeatBloCs can also be installed on PAW distribution manifolds with other dimensions.
3.1 Equipment
A-1 Flow (consumer circuit)
A-2 Full metal thermometer
with immersion sleeve integrated in
the ball valve (flow)
B Heating pump
C 3-way mixing valve
C-1 Flow (boiler)
C-2 Return (boiler)
D-1 Check valve, can be opened
D Return pipe
E Design insulation
with optimised function
F-2 Full metal thermometer
with immersion sleeve integrated in
the ball valve (return)
F-1 Return (consumer circuit)

3Product description
2015/03 9936052x-mub-en – V09 7
3.2 Function
K32 – HeatBloC with 3-way mixing valve
The flow temperature of the HeatBloC is controlled by
the integrated mixing valve. Hot water from the boiler
and cold return water are mixed to obtain the desired
flow temperature.
The mixing valve is adjusted via an external controller
and an electric actuator.
Applications:
•Installations with several HeatBloCs and
different flow temperatures (for example
radiator and radiant floor heating)
•Installations with highly variable
flow temperatures (solid fuel boilers,
combined heat and power installations)

3Product description
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3.2.1 3-way mixing valve [specialist]
The three-way mixing valve (C) driven by an electric motor adjusts the flow temperature of the
consumer circuit to the desired value in combination with a flow sensor and the controller.
Position 10: passage, no mixing
flow temperature consumer = flow temperature boiler
Position 0: 100 % mixing
flow temperature consumer = return temperature consumer

3Product description
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Change of the flow line [specialist]
Dismounting the mixing valve
1. Take off the thermometer handles (A-2, F-2) and remove the insulating front shell.
2. Take the HeatBloC out of the insulating back shell.
3. Dismount the mixing valve (C).
Conversion of the mixing valve
1. Unscrew the screw (1).
2. Take the rotary knob (2) off the rod of the cock.
3. Unscrew the screw (3).
4. Take off the cover plate (4).
5. Unscrew the two screws (5).
6. Remove the front plate (6).
7. Extract the sealing bush (7) and the valve cock (8) from the mixing valve body.
8. Unscrew the screws (10) on the rear side of the mixing valve.
9. Take off the cover (9) on the rear side and fix it at the other side of the mixing valve
using the screws (10).
10. Insert the sealing bush (7) and the valve cock (8) into the channel of the mixing valve.
11. Fix the front cover (6) with the screws (5).

3Product description
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12. Turn the cover plate (4) such that the designation PAW is at the bottom and the scale is
located as can be seen in the figure above.
13. Fix the cover plate (4) with the screws (3).
14. Put the rotary knob (2) onto the cock rod.
15. Fix the rotary knob (2) to the cock (8) with the screw (1).
Modification and commissioning of the HeatBloC
1. Interchange the return pipe (D) and the flow pipe and the pump (B).
Consider the flow direction of the pump!
Turn the pump head such that the terminal head is directed to the top or to the centre of
the HeatBloC.
2. Dismount and interchange the ball valves.
3. Mount the HeatBloC and connect it to the installation.
4. Check all union nuts before commissioning and firmly tighten them if necessary.
5. Mount the insulation after the pressure test.
Mount the thermometer handles (A-2, F-2).
Mixing valve with flow on the right Mixing valve with flow on the left
Flow
Flow