PAW HeatBloC MC45 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
2017/02 994536093x-mub-en – V01 1
Installation and Operation Instructions
HeatBloC MC45 - DN 25

1
General Information
2 994536093x-mub-en – V01 2017/02
Item no. 994536093x-mub-en – Version V01 – Issued 2017/02
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

1
General Information
2017/02 994536093x-mub-en – V01 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
3.4 3-temperature mixing valve [specialist].........................................................................8
3.5 Pump [specialist] ..........................................................................................................9
3.5.1 Pump settings .......................................................................................................9
3.5.2 Pump settings Grundfos UPM3 Hybrid..................................................................9
3.5.3 Pump settings Wilo-Yonos PARA RSTG.............................................................10
3.6 Check valve ...............................................................................................................10
3.7 Actuator......................................................................................................................11
4Change of the flow line [specialist] .................................................................................12
4.1 Conversion of the mixing valve...................................................................................13
5Assembly and installation [specialist]..............................................................................15
5.1 Installation and commissioning of the HeatBloC......................................................... 15
5.2 Cabling.......................................................................................................................18
5.3 Accessories................................................................................................................21
5.3.1 Connection set (not included in the scope of delivery)......................................... 21
5.3.2 Communication set (not included in the scope of delivery) .................................. 21
5.3.3 Cutting-ring compression fitting (not included in the scope of delivery)................ 21
5.3.4 Wall bracket set for wall assembly (not included in the scope of delivery) ........... 22
5.3.5 Pipe sets for MC45 (not included in the scope of delivery) .................................. 22
6Scope of delivery [specialist] ..........................................................................................23
6.1 Insulation and controller .............................................................................................23
6.2 Hydraulics ..................................................................................................................24
7Technical data...............................................................................................................25
7.1 Dimensional drawing DN 25.......................................................................................26
7.2 Pressure drop and pump characteristic curves...........................................................26

1
General 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 installation, commissioning, function and the operation of the
mixed HeatBloC MC45 DN 25. 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.
Only use PAW accessories with the HeatBloC.
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.
The wrapping materials are made of recyclable materials and can be disposed of with
recyclable materials.

2
Safety instructions
2017/02 994536093x-mub-en – V01 5
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.

3
Product description
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3Product description
The HeatBloC MC is a preassembled group of fittings for heating circuits. The integrated pump
can be isolated by means of ball valves and can thus be maintained without draining of the
system.
The nominal value for the differential pressure between the flow and the return is adjusted at the
controller. On this basis, the controller regulates the pump. Thus, the hydraulic balancing at the
distribution manifold is assured and an energy-saving operation of the pump is guaranteed at
any time.
The PAW HeatBloC must be either installed on a PAW modular distribution manifold or a PAW
wall bracket.
For the function of a MC system, one connection set (wall power supply, item no. 1398700) is
necessary. The connection set is not included in the scope of delivery.
3.1 Equipment
A-1 Flow to the consumer circuit
A-2 Flow ball valve with temperature
sensor TVand thermometer
B Heating pump
C 3-temperature mixing valve
(4-way mixing valve)
C-1 Flow from the heat generator
C-2 Return to the heat generator
D-1 Non-return valve, can be opened
D Return pipe with check valve
(can be opened)
E Design insulation according to
EnEV directive
F-1 Return from the consumer circuit
F-2 Return ball valve with temperature
sensor TRand thermometer
G Differential pressure sensor
H Controller MCom

3
Product description
2017/02 994536093x-mub-en – V01 7
3.2 Function
Assembly with radiator circuit (on the right)
and radiant floor heating (on the left)
MC45 - 3-temperature mixing valve with
additional connection for a second flow
temperature
The 3-temperature mixing valve is used in
combination with a buffer tank, which can be
heated by either a solar thermal installation, a
solid fuel boiler or a conventional boiler.
The mixing valve is adjusted by means of an
external controller.
If the consumer only needs a low temperature
level, such as radiant panel heating systems,
the 3-T mixing valve first takes the flow water
from the intermediate part of the storage tank.
When the temperature in this part is no longer
sufficient, the hot water from the upper part of
the tank is used.
By using two parts of the storage tank for two
different flow temperatures, the energy from the
buffer tank can be used more efficiently.
The return temperatures are low and the
stratification in the tank is maintained.
It is also possible to connect the return of a
high-temperature heating circuit as the flow of a
low-temperature heating circuit.
Application range:
•Heating systems with buffer tank and
solar heating support
•Control of radiant floor heating and
panel heating systems

3
Product description
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3.4 3-temperature mixing valve [specialist]
The 3-temperature mixing valve 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.
The 3-temperature mixing valve is equipped with a second flow connection (C-3) on the back
side. This connection allows to take water with a low flow temperature from the intermediate
part of the tank (for example a buffer tank).
A non-return valve (D-1) prevents unwanted circulation.
Rear view of mixing valve with flow on the right
Front view of mixing valve with flow on the right
Position 0-5: The flow temperature is
attained by mixing return
water and water from the
intermediate part of the
tank.
Position 5: 100% supply from the
intermediate part of the tank
Position 5-10: The flow temperature is
attained by mixing water
from the intermediate part
and the upper part of the
tank.

3
Product description
2017/02 994536093x-mub-en – V01 9
3.5 Pump [specialist]
Isolation of the pump
The pump can be completely isolated. It can be replaced and maintained without draining the
HeatBloC.
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).
3.5.1 Pump settings
The pump has been correctly adjusted at the factory. In the case of a breakdown of the control
(no PWM signal), the pump runs at maximum rotation speed. To assure a proper functioning of
the heating circuit, the pump must be set as follows:
•PWM profile (heating)
3.5.2 Pump settings Grundfos UPM3 Hybrid
The following code must appear on the pump display. The code can be verified by briefly
pressing the push button. Please observe the separate instructions of the pump!
Yellow
Off
Off
Yellow
Red

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Product description
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3.5.3 Pump settings Wilo-Yonos PARA RSTG
The rotary knob of the pump must be set to the following symbol.
The LED ring is illuminated in orange. Please observe the separate
instructions of the pump!
3.6 Check valve
The HeatBloC is equipped with a check valve (D) in the return pipe and with a non-return valve
(D-1) in the mixing valve. The valves 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
2017/02 994536093x-mub-en – V01 11
3.7 Actuator
For mixing valves with flow on the left, the scale must be turned by 180°.
for mixing valve with flow on the left for mixing valve with flow on the right
Assembly of the actuator for mixing
valves with flow on the right:
1. Turn the rotary knob of the
mixing valve into position 0.
2. Set the actuator to manual
mode by turning the selector
switch.
3. Turn the rotary knob of the
actuator to the left to the
position shown on the
adjacent figure.
4. Put the actuator on the
adjusting knob of the mixing
valve and the two stop bolts.
5. Set the actuator to automatic
mode.
Fig. 1
Fig. 2
blue
blue
red
red
Fig. 4
blue
Stop bolt
Fig. 5

4
Change of the flow line [specialist]
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4Change of the flow line [specialist]
1. Dismount the temperature sensors of the
ball valves (A-2 and F-2).
2. Unscrew both nuts of the sensor (G).
3. Unscrew the nuts above and beneath the
pump or the return pipe.
4. Mount the return ball valve above the
pump and the flow ball valve above the
return pipe.
5. Dismount the mixing valve.
Retrofit the mixing valve as described in
chapter
4.1 Conversion of the mixing
valve.
6. Interchange and mount the flow and
return line. Please observe the position of
the opening mechanism of the check
valve in the return pipe (see figure).
7. Mount the sensor (G) between the ball
valves.
Attention:
The ground lug of the sensor
points forward. The banderole indicates
on which side of the sensor housing the
pump must be fixed (see figure on the
left).
8. Flatten the ground lug.
9. Mount the temperature sensors TRand TV
into the ball valves.
Observe the correct attribution:
Red = Flow
Blue = Return
10. Convert the actuator as described in
chapter
3.7 Actuator
.

4
Change of the flow line [specialist]
2017/02 994536093x-mub-en – V01 13
4.1 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 back side of the mixing valve and take off the cover (9).
9. Pull the sealing plug (11) to the front using pliers.
Remove the flow-reducing plate (12) by pushing from front to back.
Assembly position
for mixing valve with flow on the left
10. Turn the body of the mixing valve by 180°.
11. Mount the flow-reducing plate (12) on the back
side and the sealing plug (11) on the front.
12. Mount the cover (9) on the back side of the mixing
valve. The letters on the cover indicate the correct
assembly position:
flow on the left: L points upwards
flow on the right: R points upwards
13. Fix the cover (9) using the screws (10).

4
Change of the flow line [specialist]
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16. 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.
17. Fix the cover plate (4) by using the screws (3).
18. Put the rotary knob (2) onto the cock rod.
Fix the rotary knob (2) on the cock (8) by using the screw (1).
Assembly position for mixing valve
with flow on the right
14. Insert the sealing bush (7) and the valve cock (8)
into the channel of the mixing valve.
15. Fix the front cover (6) by using the screws (5).
Mixing valve with flow on the right Mixing valve with flow on the left
Flow
Flow

5
Assembly and installation [specialist]
2017/02 994536093x-mub-en – V01 15
5Assembly and installation [specialist]
The PAW HeatBloC must be either installed on a PAW modular distribution manifold or a PAW
wall bracket. Please observe the separate instructions!
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.
5.1 Installation and commissioning of the HeatBloC
The HeatBloC MC can be mounted on a PAW modular distribution manifold.
Flow
Flow
Return
Return
Consumer circuit
Flow
Return
Consumer circuit

5
Assembly and installation [specialist]
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NOTICE
Verify if the grounding cable holds securely in place at the differential pressure sensor!
The ground lug points in the direction of the banderole.
Carry out the following mounting instructions in parallel at each heating circuit of the
system.
1. Remove the station from the packaging.
2. Take off the thermometer handles.
3. Note regarding HeatBloC with Wilo pump:
Dismount the insulating front shell of the
controller and push the insulating back
shell backwards.
4. Remove the actuator.
5. Take off the insulating front shells.
6. Push the insulating back shell backwards.
7. Unscrew the nuts on the lower
connections of the HeatBloC and take out
the sealing rings.
8. Put the two nuts over the flanges of the
distribution manifold.
Flange (top view)
Nut
1
2
3
Flange
(side view)

5
Assembly and installation [specialist]
2017/02 994536093x-mub-en – V01 17
9. Put the sealing rings on the sealing
surfaces.
10. Put the HeatBloC onto the two sealing
rings.
11. Tighten the nuts. Make sure that the nuts
do not get jammed and that the sealing
rings do not slip.
12. Connect the HeatBloC to the installation
by using the pipes. The installation to the
piping must be carried out without any
tension. The rear connection can be
accessed from below.
13. Repeat these steps for all the HeatBloCs
that are mounted.
14. Fill and vent the installation.
15. Carry out a pressure test and check all
thread connections.
16. Check the position of the check valve:
during operation, the marking must be
directed to "Z" (see page 10).
17. Mount the insulating back shell.
In case that the optional pipe set is
mounted to the rear connection (C-3),
make sure that the plastic cap is correctly
positioned.
18. Run first the cable of the actuator through
the insulating element of the mixing valve
backwards. Mount the insulating element.
Mount the actuator (see page 11) and pull
the actuator cable backwards at the same
time.
19. Connect the power supply of the pump
and the actuator to the heating controller.
Sealing ring

5
Assembly and installation [specialist]
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20. Mount the insulating front elements.
21. Mount the insulating front and back shell
of the distribution manifold.
Note:
Cut the insulating back shell in the pipe
axis of the connection on the back of the
mixing valve (C-3). Thus, the back shell of
the distribution manifold is easier to
mount.
5.2 Cabling
1. Loosen the screws of the controller
insulation.
2. Dismount the insulating front shell of the
controller.
3. Connect the wall power supply to the
socket X6.2 (see below) at the last (right)
controller.
4. Connect the bus line from controller 1 to
controller 2 in the socket X6.1.
As the two sockets of the bus line (X6.1
and X6.2) are connected in parallel, the
position has no importance.
5. Repeat these steps for all the HeatBloCs
that are mounted.
6. Remove the bus line from the last
controller. Keep the bus line as spare part.
Optional communication
set

5
Assembly and installation [specialist]
2017/02 994536093x-mub-en – V01 19
X1 X2 X3 X4 X5 X6.1 X6.2
X1 not used X4 Temperature sensor TV, flow, red
marking
X2 PWM signal of the pump X5 Differential pressure sensor
X3 Temperature sensor TR, return,
blue marking
X6.1
X6.2
Supply voltage or bus line
(connected in parallel and therefore
interchangeable)
7. If you do not mount the
communication set, continue at
point 11.
8. If you additionally mount the
optional communication set, run the
bus line of the communication set
to the first (left) controller. For this
purpose, disconnect the plug of the
bus line from the mini PC of the
communication set.
9. Make sure that the plug does not
get wet.

5
Assembly and installation [specialist]
20 994536093x-mub-en – V01 2017/02
10. Mount the optional communication
set now. Please observe the
separate instructions of the
communication set!
11. Carry out the electrical
commissioning of the controllers
(see controller instructions).
12. Carry out the electrical
commissioning of the
communication set (see instructions
of communication set).
13. Mount the insulating front shell of
the controller.
14. Screw the screws in the controller
insulation.
15. Please fill in the enclosed insert
and fix it on the insulation:
Type: Type of the heating circuit,
f. ex. MC45
Name: Type of the application and floor,
f. ex. radiant panel heating,
1st floor
No.: Number of the heating circuit
according to the controller
instructions, f. ex. 2
MC45
Radiant panel heating, 1st floor
2