PAW GmbH & Co.KG
Installation and Operation Instructions
HeatBloC K32 - DN 25
Böcklerstr. 11, D-31789 Hameln, Germany
Phone: +49-5151-9856-0, Fax: +49-5151-9856-98
E-mail: info@paw.eu, Web: www.paw.eu
2015/03 9936052x-mub-en – V09 1
1 General information
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
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PAW GmbH & Co.KG
Böcklerstr. 11
D-31789 Hameln, Germany
1 General information
Contents
1 General information ......................................................................................................... 4
1.1 Scope of these instructions .......................................................................................... 4
1.2 Designated use ............................................................................................................ 4
2 Safety instructions ........................................................................................................... 5
3 Product 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
4 Assembly 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
5 Scope of delivery [specialist] .......................................................................................... 17
6 Technical data ............................................................................................................... 18
6.1 Pressure drop and pump characteristics .................................................................... 19
2015/03 9936052x-mub-en – V09 3
1 General information
1 General 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.
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2 Safety instructions
CAUTION
Personal injury and damage to property!
not
NOTICE
Material damage due to mineral oils!
2 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 this manual
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
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.
be used in domestic water applications.
2015/03 9936052x-mub-en – V09 5
3 Product description
3 Product 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)
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3 Product description
K32 – HeatBloC with 3-way mixing valve
Applications:
3.2 Function
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.
• 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)
2015/03 9936052x-mub-en – V09 7
3 Product description
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
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3 Product description
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).
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3 Product description
Flow
Flow
Mixing valve with flow on the right Mixing valve with flow on the left
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).
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3 Product description
Operation
Filling, emptying, bleeding
3.2.2 Pump [specialist]
The pump can be completely isolated. It can be replaced and maintained without draining of
the heating installation.
Isolation of the pump
1. Close the ball valves in the flow and the return (A-2, F-2).
2. Take off 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.
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 manually.
During operation, the mark must be directed to "Z".
The check valve is closed.
Flow only in the direction of the arrow.
For filling, emptying and bleeding the mark must be directed
to "A".
The check valve is open.
Flow in both directions.
2015/03 9936052x-mub-en – V09 11
3 Product description
Assembly of the actuator for mixing
valves with flow on the right:
Stop bolt
3.2.4 Accessories: actuator (not included in delivery)
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 valves with flow on the right for mixing valves with flow on the left
1. Turn the rotary knob of the mixing
valve to position 0.
2. Set the actuator to manual mode
by turning the selector switch.
3. Turn the rotary lever of the
actuator to the left to the position
shown in the figure.
4. Put the actuator onto the rotary
knob of the mixing valve and the
two stop bolts.
5. Set the actuator to automatic
mode.
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4 Assembly and installation [specialist]
NOTICE
Damage to property!
4 Assembly and installation [specialist]
The K32 HeatBloC must be either installed on a PAW modular distribution manifold or a set of
wall bracket and mounting plate. The modular distribution manifold, the wall bracket and the
mounting plate are not included in delivery.
The location of installation must be dry, load-carrying, frost-proof and protected against
ultraviolet radiation to prevent material damage to the installation.
4.1 Installation of the modular distribution manifold / wall bracket with mounting plate
Mount the modular distribution manifold or the wall bracket with mounting plate as described in
the separate instructions.
If possible, choose the largest distance to the wall.
In this way it is easier to mount the insulation of the
distribution manifold.
2015/03 9936052x-mub-en – V09 13
4 Assembly and installation [specialist]
Option 1:
Option 2:
4.2 Installation of the HeatBloC and commissioning
The HeatBloC can be installed
•
on a PAW modular distribution manifold.
Consumer circuit
Return
Flow
•
on a mounting plate
with thread connections.
Consumer circuit
Return
Flow
Flow
Boiler circuit
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Return
Return
Boiler circuit
Flow
4 Assembly and installation [specialist]
(top view)
1
2
(side view)
Sealing ring
1. Take off the thermometer
Flange
handles (A-2, F-2) and remove
the insulating front shell of the
HeatBloC.
Nut
2. Unscrew the nuts on the lower
connections of the HeatBloC
3
and take out the sealing rings.
3. Flip the two nuts over the
flanges.
Flange
4. Insert the sealing rings into the
nuts.
5. Put the HeatBloC onto the two
nuts.
6. Tighten the nuts.
Take care that the nuts do not
get jammed and that the
sealing rings do not slip.
7. Connect the HeatBloC to the
installation. The connections to
the installation must be stressfree.
8. Connect the pump.
9. Carry out the pressure test and
check all thread connections.
10. Mount the insulating front shell
and the thermometer handles
(A-2, F-2).
2015/03 9936052x-mub-en – V09 15
4 Assembly and installation [specialist]
4.3 Accessories: compression fitting (not included in delivery)
The connection to the heating installation can be carried out fast, pressure-proof and without
soldering when you use the optionally available compression fittings.
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 the plugged-on
individual parts (②, ③ and ④) all the way into the
housing of the cutting-ring 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.
Not included in
the scope of delivery!
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5 Scope of delivery [specialist]
NOTICE
Description
Item number
Pump
Item number
5 Scope of delivery [specialist]
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.
Sealing set for mixing valve 34013
Wilo-Yonos PARA RS 25/6-RKA E1236046
Wilo-Stratos PICO 25/1-6 E1239625
Grundfos UPM3 Auto L 25-70 PP3 E1212460
Grundfos Alpha2 25-60 E121391
2015/03 9936052x-mub-en – V09 17
6 Technical data
K32
DN 25 (1")
Dimensions
Connections
Technical data
Materials
6 Technical data
Centre distance (1) 125 mm
Width insulation (2) 250 mm
Height insulation (3) 396 mm
Installation length (4) 345 mm
Outlet (A-1, F-1) 1" internal thread
Inlet (C-1, C-2) 1½" external thread
Opening pressure check valve (D-1) 200 mm wc, can be opened
Valves and fittings Brass
Gaskets EPDM / NBR
Insulation EPP
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6 Technical data
K32
DN 25 (1")
Hydraulics
Maximum pressure 8 bars
Maximum temperature 110 °C
KVS value [m3/h] 4.4
6.1 Pressure drop and pump characteristics
Pressure [m wc]
Flow rate [l/h]
Pressure [kPa]
2015/03 9936052x-mub-en – V09 19
PAW GmbH & Co.KG
Böcklerstraße 11
D-31789 Hameln, Germany
9936052x-mub-en – V09 2015/03
Phone: +49 (0) 5151 9856 - 0
Fax: +49 (0) 5151 9856 - 98
www.paw.eu
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