PAW HeatBloC K32 DN 25 Installation instructions

PAW GmbH & Co. KG
Böcklerstr. 11, 31789 Hameln - Germany
Phone: [phone], Fax: [phone]
E-mail: [e-mail], Web: www.paw.eu
2020/03 993x053x-mub-en – V05 1
DN 25
DN 32
Installation and Operation Instructions
HeatBloC®K32
DN 25 / DN 32

1General Information
2 993x053x-mub-en – V05 2020/03
Contents
1General Information.........................................................................................................3
1.1 Scope of these instructions ..........................................................................................3
1.2 Designated use ............................................................................................................3
2Safety instructions ...........................................................................................................4
3Product description..........................................................................................................5
3.1 Equipment....................................................................................................................5
3.2 Function .......................................................................................................................6
3.2.1 3-way mixing valve [specialist] ..............................................................................7
3.2.2 Pump [specialist].................................................................................................10
3.2.3 Check valve ........................................................................................................10
3.2.4 Accessories: Actuator (optional)..........................................................................11
4Assembly and installation [specialist]..............................................................................12
4.1 Installation and commissioning of the HeatBloC®....................................................... 12
4.2 Accessories: Cutting-ring compression fitting (not included in the scope of delivery).. 15
5Scope of delivery [specialist]..........................................................................................16
5.1 Spare parts DN 25 .....................................................................................................16
5.2 Spare parts DN 32 .....................................................................................................18
6Technical data...............................................................................................................20
6.1 Pressure drop and pump characteristic curves DN 25................................................21
6.2 Pressure drop and pump characteristic curves DN 32................................................21
7Disposal........................................................................................................................22
Item no. 993x053x-mub-en – Version V05 – Issued 2020/03
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
Böcklerstraße 11
31789 Hameln - Germany

1General Information
2020/03 993x053x-mub-en – V05 3
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 installation, commissioning, function and the operation of
the mixed HeatBloC®K32 DN 25 and DN 32.
For other components of the installation, such as the pump, the controller or the modular
distribution manifold, please observe the instructions of the corresponding manufacturer.
The chapters called [specialist] are intended for specialists only.
1.2 Designated use
The HeatBloC®may only be used in heating circuits taking into consideration the technical
limit values indicated in these instructions.
The HeatBloC®must not be used in drinking water applications.
Improper usage of the HeatBloC®excludes any liability claims.
This product complies with the relevant directives and is therefore labelled with the CE mark.
The Declaration of Conformity is available upon request. Please contact the manufacturer.
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 of this manual
CAUTION
Personal injury and damage to property!
The HeatBloC®must only be used in heating circuits filled
with heating water according to VDI 2035 / Ö-Norm H 5195-1.
The HeatBloC®must
not
be used in drinking water applications.
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 EPDM gets 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.

3Product description
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3Product description
The HeatBloC®K32 is a preassembled group of fittings for heating circuits. The pump can be
isolated by means of the ball valves and the mixing valve, maintenance work on the pump
can thus be carried out without draining the heating circuit.
The PAW HeatBloC®is designed such that it can be directly mounted onto a PAW distribution
manifold or a mounting plate. With transition connections, PAW HeatBloC®s can also be
mounted on PAW modular distribution manifolds of other dimensions.
3.1 Equipment
A-1 Flow to the 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 from the heat generator
C-2 Return to the heat generator
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 from the consumer circuit

3Product description
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3.2 Function
K32 – HeatBloC®with 3-way mixing valve
The flow temperature of the heating circuit is
controlled by the integrated mixing valve. Hot water
from the boiler and cold return water are mixed to
obtain the desired flow temperature of the heating
circuit.
The mixing valve is adjusted via an external controller
in combination with an electric actuator. The ball
valves allow a maintenance of the pump, of the
boiler / heat generator circuit as well as of the
consumer circuit without putting the entire installation
out of operation. Two thermometers display the
temperatures of the flow and the return and allow thus
a function control. The integrated check valve can be
opened, it avoids an unwanted circulation and can be
put out of operation to flush and fill the installation.
The insulation avoids that heat energy gets lost.
Application ranges:
•Installations with several HeatBloC®s and
different flow temperatures (radiators and
radiant floor heating)
•Installations with high fluctuations of the
flow temperature due to the heat generator
(solid fuel boilers, installations with power-heat
cogeneration)

3Product description
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3.2.1 3-way mixing valve [specialist]
The 3-way mixing valve (C), driven by an electric actuator, adjusts the flow temperature of
the consumer circuit to the required value by means of the flow sensor and the controller.
Position 10: passage, no mixing
Flow temperature consumer = Flow temperature heat generator
Position 0: 100 % mixing
Flow temperature consumer = Return temperature consumer

3Product description
8 993x053x-mub-en – V05 2020/03
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 group of fittings out of the insulating back shell.
3. Dismount the mixing valve (C).
Conversion of the mixing valve
1. Loosen the screw (1).
2. Take off the rotary knob (2) from the cock rod.
3. Loosen the screws (3).
4. Remove the cover plate (4).
5. Loosen 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 housing.
8. Loosen the screws (10) on the rear side of the mixing valve.
9. Take off the cover (9) on the rear side of the mixing valve and fix it on the other side
of the mixing valve by 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) by using the screws (5).

3Product description
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12. Turn the cover plate (4) such that the marking PAW is at the bottom and that the scale
is positioned as shown on the figure above.
13. Fix the cover plate (4) by using the screws (3).
14. Put the rotary knob (2) onto the cock rod.
15. Fix the rotary knob (2) on the cock (8) by using the screw (1).
Retrofitting and commissioning of the HeatBloC®
1. Interchange the return pipe (D) and the flow pipe with the pump (B).
Consider the flow direction of the pump!
Turn the pump head such that the terminal box is directed to the top or to the centre
of the group of fittings.
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 only after having carried out a pressure test.
Mount the thermometer handles (A-2, F-2) in a final step.
Mixing valve with flow on the right Mixing valve with flow on the left
Flow
Flow

3Product description
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3.2.2 Pump [specialist]
The pump can be completely isolated. It can be replaced and maintained without draining
the HeatBloC®.
Isolation of the pump
1. Close the ball valves in the flow and the return (A-2, F-2).
2. Remove the actuator from the mixing valve.
3. Turn the rotary knob of the mixing valve such that the black nose is directed to "VL zu"
(flow closed). The mixing valve is now closed and drop tight if the installation is
unpressurised.
3.2.3 Check valve
The HeatBloC®is equipped with a check valve (D-1) in the return pipe.
The check valve can be opened.
Operation
During operation, the marking must be directed to "Z".
The check valve is closed.
Flow only in the direction of the arrow.
Filling, draining, venting
For filling, draining and venting the installation, the marking
must be directed to "A".
The check valve is open.
Flow in both directions.

3Product description
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3.2.4 Accessories: Actuator (optional)
The PAW actuator for weather-compensated control is available as an accessory.
For mixing valves with flow on the left, the scale must be turned by 180°.
for mixing valve with flow on the right for mixing valve with flow on the left
Assembly of the actuator for mixing valves
with flow on the right:
If the PAW actuator has been purchased as an
optional accessory, the mixing valve contains a
metal plate. To mount the PAW actuator on the
mixing valve, proceed as follows:
1. Turn the rotary knob of the mixing valve
into position
0
(fig. 4).
2. Set the actuator to manual mode by turning
the selector switch (fig. 3).
3. Turn the rotary knob of the actuator to the left
to the position shown on the adjacent figure
(fig. 3).
4. Mount the rotation lock / the stop bolt in
the
left
opening of the metal plate (fig. 4).
The actuator is fixed on a stop bolt.
5. Put the PAW actuator on the rotary knob
of the mixing valve and mount the actuator on
the stop bolt.
The PAW actuator must be mounted in a
horizontal position as shown in figure 5.
6. Set the actuator to automatic mode.
Stop bolt
Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
blue blue
blue
red red
selector
switch

4Assembly and installation [specialist]
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4Assembly and installation [specialist]
The HeatBloC®K32 can be mounted on a PAW modular distribution manifold or on a wall
bracket. The modular distribution manifold and the wall bracket are optional accessories
and are thus not included in the scope of delivery.
NOTICE
Damage to property!
The location of installation must be dry, load-carrying, frost-proof and protected against
ultraviolet radiation in order to prevent material damage of the installation.
4.1 Installation and commissioning of the HeatBloC®
The HeatBloC®can be installed
•
Option 1:
on a PAW modular distribution manifold.
Flow
Flow
Heat generator
Return
Return
Consumer circuit

4Assembly and installation [specialist]
2020/03 993x053x-mub-en – V05 13
•
Option 2:
on a mounting plate with
transition thread connections.
•
Option 3:
directly on a wall bracket
Please observe the separate and respectively corresponding instructions regarding the
installation of the distribution manifold, of the mounting plate and of the wall bracket.
Flow
Flow
Return
Return
Heat generator
Consumer circuit
Flow Return
Flow
Return

4Assembly and installation [specialist]
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1. Take off the thermometer handles
(A-2, F-2) and remove the insulating
front shell of the HeatBloC®.
2. Unscrew the nuts on the lower
connections of the HeatBloC®
and take out the sealing rings.
If PAW modular distribution manifold
or transition connection is used:
3. Put the two nuts over the flanges.
4. Insert the sealing rings into the nuts.
5. Put the HeatBloC®onto the two nuts.
6. Tighten the nuts. Make sure that the
nuts do not get jammed and that the
sealing rings do not slip.
7. Connect the HeatBloC®to the
installation by using the pipes.
The installation to the piping must
be carried out without any tension.
8. Connect the pump.
9. Carry out a pressure test and
check all thread connections.
10. Mount the insulating front shell and
the thermometer handles (A-2, F-2).
Flange
(top view)
Nut
1
2
3
Flange
(side view)
Sealing ring

4Assembly and installation [specialist]
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4.2 Accessories: Cutting-ring compression fitting (not included in the scope of delivery)
The connection to the heating installation can be carried out fast, pressure-proof
and without soldering if you use the optionally available compression fittings.
Not included in
the scope of delivery!
1. Push the union nut ② and the cutting ring ③ onto the
copper pipe ①. The pipe must protrude at least 3 mm
from the cutting ring in order to ensure the force
transmission and the sealing.
2. Insert the support sleeve ④ into the copper pipe.
3. Insert the copper pipe with the plugged-on individual
parts (②, ③ and ④) as far as possible into
the housing of the compression fitting ⑤.
4. First, screw the union nut ② manually.
5. Tighten the union nut ② by rotating one full turn.
Secure the housing of the compression fitting ⑤
against distort, in order to avoid damaging the
sealing ring.

5Scope of delivery [specialist]
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5Scope of delivery [specialist]
NOTICE
Complaints and requests/orders of spare parts will only be processed with information on
the serial number!
The serial number is placed on the return pipe of the heating circuit.
5.1 Spare parts DN 25

5Scope of delivery [specialist]
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Position
Spare part
Item number
1 Thermometer ball valve DN 25, F1" x 1" int. thread N00244
2 Thermometer handle for ball valve 1" N00248
3 Dial thermometer, red scale, d=50 mm, 0-120 °C N00242
4 Dial thermometer, blue scale, d=50 mm, 0-120 °C N00243
5 Union nut G 1½" 2155
6 Gasket 1", for threaded connection 1½" N00131
7 Pump see following table
8 Insulation for HeatBloC®DN 25 N00016
9 Actuator 5 Nm, 230 V, 50 Hz 705001
10 Brass pipe DN 25, 2x 1½" ext. thread, 180 mm,
with check valve
N00018
Sealing set for mixing valve 37013
Item number heating circuit*
Pump
Item no.
EEI
36053(M)WP6 Wilo Para SC 25/6-43 N00259 < 0.20
36053(M)WP8 Wilo Para SC 25/8-60/O N00271 < 0.20
36053(M)WH6 Wilo-Stratos PICO 25/1-6 E1239625 < 0.20
36053(M)GL9 Grundfos UPML 25-95 Auto E121394 < 0.23
36053(M)GM6 Grundfos UPM3 Auto L 25-70 PP3 N00237 < 0.20
36053(M)GH6 Grundfos Alpha2.1 25-60 N00236 < 0.17
*Heating circuits with an actuator additionally contain a M in the item number, f. ex. 36053MWH6
(without actuator = 36053WH6)

5Scope of delivery [specialist]
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5.2 Spare parts DN 32

5Scope of delivery [specialist]
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Position
Spare part
Item number
1 Thermometer ball valve DN 32, F1¼" x 1¼" int. thread N00245
2 Thermometer handle for ball valve 1" N00248
3 Dial thermometer, red scale, d=50 mm, 0-120 °C N00242
4 Dial thermometer, blue scale, d=50 mm, 0-120 °C N00243
5 Union nut G 2" 2156
6 Gasket 1¼", for threaded connection 2" N00133
7 Pump see following table
8 Insulation for HeatBloC®DN 32 N00027
9 Actuator 5 Nm, 230 V, 50 Hz 705001
10 Brass pipe DN 32, 2x 2" ext. thread, 180 mm,
with check valve
N00139
Sealing set for mixing valve 41013
Item number heating circuit*
Pump
Item no.
EEI
39053(M)WP6 Wilo Para SC 30/6-43 N00261 < 0.20
39053(M)WH6 Wilo-Stratos PICO 30/1-6 E1239630 < 0.20
39053(M)WY10 Wilo-Yonos PARA HF 30/0.5-10 E12361510 < 0.23
39053(M)GM6 Grundfos UPM3 Auto L 32-70 PP3 N00240 < 0.20
39053(M)GH6 Grundfos Alpha2.1 32-60 N00239 < 0.17
39053(M)GL9 Grundfos UPML 32-95 Auto E121704 < 0.23
*Heating circuits with an actuator additionally contain a M in the item number, f. ex. 39053MWH6
(without actuator = 39053WH6)

6Technical data
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6Technical data
K32
DN 25 (1")
DN 32 (1¼")
Dimensions
Centre distance (1) 125 mm 125 mm
Width insulation (2) 250 mm 250 mm
Height insulation (3) 383 mm 441 mm
Installation length (4) 340 mm 400 mm
Connections
Outlet (A-1, F-1) 1" internal thread 1¼" internal thread
Inlet (C-1, C-2) 1½" external thread 2" external thread
Technical data
Opening pressure check valve (D-1) 200 mm wc, can be opened
Materials
Valves and fittings Brass
Gaskets EPDM
Insulation EPP