PAW HeatBloC K31 Owner's manual

Installation and Operation Instructions
HeatBloC® K31
DN 25 / DN 32
DN 25 DN 32
PAW GmbH & Co. KG
Böcklerstraße 11, 31789 Hameln, Germany
Phone: +49-5151-9856-0, Fax: +49-5151-9856-98
02/2023 993x013x-mub-en - V05 1

Table of Contents
1 General Information...................................................................................................3
1.1 Scope of these instructions........................................................................................3
1.2 Designated use........................................................................................................... 3
2 Safety instructions......................................................................................................4
3 Product description.................................................................................................... 5
3.1 Equipment...................................................................................................................5
3.2 Function.......................................................................................................................6
3.2.1 Check valve................................................................................................................. 7
4 Mounting and installation [specialist]...................................................................... 8
4.1 Installation and commissioning of the HeatBloC®...................................................8
4.2 Accessories: Cutting-ring compression fitting (not included in the scope of
delivery).......................................................................................................................11
5 Scope of delivery [specialist]..................................................................................... 12
5.1 Spare parts DN 25....................................................................................................... 12
5.2 Spare parts DN 32....................................................................................................... 14
6 Technical data............................................................................................................. 16
6.1 Pressure drop and pump characteristic curves DN 25.............................................18
6.2 Pressure drop and pump characteristic curves DN 32.............................................18
7 Disposal....................................................................................................................... 19
Table of Contents
02/2023 993x013x-mub-en - V05 2

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 installation, commissioning, functioning and the operation of an
unmixed HeatBloC®.
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 product may only be used in heating circuits taking into consideration the technical limit values
indicated in these instructions.
It must not be used in drinking water applications.
Improper usage 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 product.
1 General Information
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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 these instructions
CAUTION
Personal injury and damage to property!
The product must only be used in heating circuits filled with heating water according
to VDI 2035 / Ö-Norm H 5195-1.
►The product must not be used in drinking water applications.
WARNING
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 prevent the EPDM sealing elements from making contact with substances
containing mineral oils.
►Use a silicone- or polyalkylene-based lubricant free of mineral oil such as Unisilikon L250L
and Syntheso Glep 1 from Klüber or a silicone spray.
2 Safety instructions
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3 Product description
The HeatBloC® is a preassembled group of fittings for heating circuits. The integrated pump can be
isolated by means of the ball valves and 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 All-metal thermometer with immersion sleeve,
integrated in the ball valve (flow)
B Heating pump
C-1 Flow from the heat generator
C-2 Return to the heat generator
D Return pipe
D-1 Check valve, can be opened
E Design insulation with optimised function
F-1 Return from the consumer circuit
F-2 All-metal thermometer with immersion sleeve,
integrated in the ball valve (return)
3 Product description
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3.2 Function
Unmixed HeatBloC®
An integrated circulation pump transports the water from
the heat generator to the consumers. 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 range:
●Heating circuit systems for
modulating temperature
heating systems
●Heating circuit systems for
storage tank charging and
discharging
3 Product description
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3.2.1 Check valve
The product is equipped with a check valve 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
3 Product description
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4 Mounting and installation [specialist]
The HeatBloC® can either be mounted on a distribution manifold or on a wall bracket. The distribution
manifold and the wall bracket are opt. accessories and are thus not included in the scope of delivery.
WARNING
Damage to property!
The installation site must be dry, stable, 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 mounted
Option 1:
on a PAW modular distribution manifold.
Option 2:
on a mounting plate with transition thread connections.
consumer circuit
return flow
flow return
heat generator
consumer circuit
return flow
return flow
heat generator
4 Mounting and installation [specialist]
8 993x013x-mub-en - V05 02/2023

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.
4 Mounting 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. Remove the insulating piece above the
return pipe (D).
3. Unscrew the nuts on the lower connections
of the HeatBloC® and take out the sealing
rings.
If a PAW modular distribution manifold or
transition connection is used:
4. Put the two nuts over the flanges.
5. Insert the sealing rings into the nuts.
6. Put the HeatBloC® onto the two nuts.
7. Tighten the nuts. Make sure that the nuts
do not get jammed and that the sealing
rings do not slip.
8. Connect the HeatBloC® to the installation
by using the pipes. The installation to the
piping must be carried out without any
tension.
9. Connect the pump.
10. Carry out a pressure test and check all
thread connections.
11. Mount the insulating piece in front of the
return pipe (D).
12. Mount the insulating front shell and the
thermometer handles (A-2, F-2).
4 Mounting 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.
1. Push the union nut ②and 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 ④into the copper pipe.
3. Insert the copper pipe with the plugged-on
individual parts ②, ③and ④as far as possible
into the body of the compression fitting ⑤.
4. First, screw the union nut ②manually.
5. Tighten the union nut ②by rotating one full
turn. Secure the body of the compression fitting
⑤against distort in order to avoid damaging the
sealing ring.
Not included in the scope of delivery!
4 Mounting and installation [specialist]
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5 Scope of delivery [specialist]
NOTICE
Serial number
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 product.
5.1 Spare parts DN 25
5 Scope of delivery [specialist]
12 993x013x-mub-en - V05 02/2023

Position Spare part Item number
1 Thermometer ball valve DN 25, flange 1" x 1" int. thread N00244
2 Thermometer handle for thermometer 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" N00269
6 Gasket 1" for threaded connection 1½" N00131
7 Pump see following table
8 Insulation for HeatBloC® DN 25 N00016
9 Pump ball valve DN 25, flange 1" x 1½" ext. thread 2109
10 Brass pipe DN 25, 2 x 1½" ext. thread, 180 mm, with check valve N00021
Item no. heating circuit Pump Item no. pump EEI
36013WP6 Wilo Para SC 25/6-43 N00259 < 0.20
36013WP8 Wilo Para SC 25/8-60/O N00271 < 0.20
36013WN06 Wilo Yonos PICO 25/1-6 N00214 < 0.20
36013GM6 Grundfos UPM3 Auto L 25-70 PP3 N00237 < 0.20
36013GH6 Grundfos Alpha2.1 25-60 N00236 < 0.17
36013GL9 Grundfos UPML 25-95 Auto N00396 < 0.23
5 Scope of delivery [specialist]
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5.2 Spare parts DN 32
Position Spare part Item number
1 Thermometer ball valve DN 32, flange 1¼" x 1¼" int. thread N00245
2 Thermometer handle for thermometer 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" N00270
6 Gasket 1¼", for threaded connection 2" N00133
7 Pump see following table
8 Insulation for HeatBloC® DN 32 N00027
5 Scope of delivery [specialist]
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Position Spare part Item number
9 Pump ball valve DN 32, 2" ext. thread x flange 1¼" N00294
10 Brass pipe DN 32, 2x 2" ext. thread, 292 mm, with check valve N00140
Item no. heating circuit Pump Item no. pump EEI
39013WP6 Wilo Para SC 30/6-43 N00261 < 0.20
39013WN06 Wilo Yonos PICO 30/1-6 N00313 < 0.20
39013WY10 Wilo-Yonos PARA HF 30/0.5-10 N00398 < 0.20
39013GM6 Grundfos UPM3 Auto L 32-70 PP3 N00240 < 0.20
39013GH6 Grundfos Alpha2.1 32-60 N00239 < 0.17
39013GL9 Grundfos UPML 32-105 Auto N00344 < 0.23
5 Scope of delivery [specialist]
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6 Technical data
HeatBloC® K31 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" int. thread 1¼" int. thread
Inlet (C-1, C-2) 1½" ext. thread, flat
sealing
2" ext. thread, flat
sealing
Operating data
Max. pressure 6 bars 6 bars
Max. temperature 110 °C 110 °C
KVSvalue [m3/h] 7.2 15.1
6 Technical data
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HeatBloC® K31 DN 25 (1") DN 32 (1¼")
Opening pressure check valve (D-1) 200 mm wc, can be opened
Materials
Valves and fittings Brass
Gaskets EPDM
Insulation EPP
6 Technical data
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6.1 Pressure drop and pump characteristic curves DN 25
6.2 Pressure drop and pump characteristic curves DN 32
6 Technical data
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7 Disposal
NOTICE
Electrical and electronic devices must not be disposed of in the household waste.
For your return, there are free collection points for electrical appliances and, if
necessary, additional points of acceptance for the reuse of the devices in your area.
The addresses can be obtained from your city or communal administration.
If the old electrical or electronic device contains personal data, you are responsible
for deleting it before returning the device.
Batteries and rechargeable batteries must be removed prior to the disposal of the
product. Depending on the product equipment (partly with optional accessories),
single components can also contain batteries and rechargeable batteries. Please
observe the disposal symbols on the components.
Disposal of transport and packaging materials
The packaging materials are made of recyclable materials and can be disposed of with recyclable
materials.
7 Disposal
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Item no. 993x013x-mub-en
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
www.paw.eu
Phone: +49-5151-9856-0
Fax: +49-5151-9856-98
02/2023 993x013x-mub-en - V05
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