PAW CoolBloC C34 DN 32 User manual

PAW GmbH & Co. KG
Böcklerstr. 11, D-31789 Hameln, Germany
Phone: [phone], Fax: [phone]
E-mail: [email protected], Web: www.paw.eu
2018/06 99423x063MGK7-mub-en –V01 1
DN 25
DN 32
Installation and Operation Instructions
CoolBloC - C34
DN 25 / DN 32

1General Information
2 99423x063MGK7-mub-en –V01 2018/06
Item no. 99423x063MGK7-mub-en –Version V01 –Issued 2018/06
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
D - 31789 Hameln, Germany

1General Information
2018/06 99423x063MGK7-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
3.2.1 Check valve and non-return valve ......................................................................... 8
3.2.2 Pump [specialist]................................................................................................... 9
3.2.3 3-way mixing valve [specialist] .............................................................................. 9
4Assembly and installation [specialist]..............................................................................13
4.1 Installation and commissioning of the CoolBloC......................................................... 13
4.2 Actuator...................................................................................................................... 16
4.3 Assembly of the actuator for CoolBloC with flow on the right:..................................... 16
4.4 Assembly of the actuator for CoolBloC with flow on the left:....................................... 17
5Scope of delivery [specialist]..........................................................................................18
5.1 Spare parts DN 25 ..................................................................................................... 18
5.2 Spare parts DN 32 ..................................................................................................... 19
6Technical data...............................................................................................................20
6.1 Pressure drop and pump characteristic curve C34 - DN 25 / DN 32 ........................... 21
6.2 Determination of the dew point................................................................................... 22

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 installation, commissioning, function and the operation
of the mixed CoolBloC C34 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 CoolBloC may only be used in heating circuits taking into consideration the
technical limit values indicated in these instructions.
The CoolBloC must not be used in drinking water applications.
Improper usage of the CoolBloC 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 CoolBloC.
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 CoolBloC must only be used in heating circuits filled with
heating water according to VDI 2035 / Ö-Norm H 5195-1.
The CoolBloC 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 CoolBloC C34 is a pre-assembled group of fittings for heating and cooling circuits.
The pump can be isolated by means of the ball valves and the mixing valve. The pump
can thus be maintained easily without draining the heating circuit.
The CoolBloC can be mounted with a thermally decoupled wall bracket or alternatively on
a modular PAW distribution manifold. With transition connections, PAW CoolBloCs can also
be mounted on PAW modular distribution manifolds of other dimensions.
3.1 Equipment
A-1
Flow to the consumer circuit
A-2
Plastic thermometer
with immersion sleeve,
integrated in the ball valve (flow)
B
Circulation pump,
approved for cooling operation
C
3-way mixing valve with
adjustable bypass 0-50%
C-1
Flow from the heat / cold generator
C-2
Return to the heat / cold generator
C-3
Non-return valve, can be opened
D-1
Check valve, can be opened
D
Return pipe
E
Design insulation
with optimised function
F-2
Plastic 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
C34 3-way mixing valve with bypass 0-50%
The flow temperature of the heating circuit is
controlled by the integrated mixing valve.
Heated or cooled water from the boiler and cooled
or heated 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 the electric actuator.
Due to the premixing rate that must be adjusted at
the bypass of the mixing valve, a certain amount
of return water is added to the flow water.
The 3-way actuator can thus work over the whole
adjustment range (0-100%), although only a small
amount of water from the boiler is necessary.
Example: Radiant panel heating systems operate
on a low temperature level with small temperature
differences but with high flow rates. It is therefore
sufficient to "inject" a small amount of hot water
into the "warm" return water.
Application range:
•Consumer circuits with a significantly
different flow temperature than the
one provided by the boiler
•Consumer circuits with high flow rates,
f.ex. radiant floor heating and radiant
panel heating systems

3Product description
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3.2.1 Check valve and non-return valve
The CoolBloC is equipped with a check valve (D-1, opening pressure 200 mm wc) in the return
pipe and with a non-return valve (C-3, opening pressure 50 mm wc) in the return of the mixing
valve. The valves can be opened.
Operation
During operation, the markings must point to "Z".
→The check valve and the non-return valve are closed.
→Flow only in the direction of the arrow.
Filling, draining, venting
For filling, draining and venting, the markings must be
directed to "A".
→The check valve and the non-return valve are open.
→Flow in both directions.

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 heating circuit.
Isolation of the pump:
1. Disconnect the expansion tank from the installation.
2. Close the ball valves in the flow and the return (A-2, F-2).
3. Remove the actuator from the mixing valve.
4. Turn the bypass screw of the mixing valve such that the slot is in a vertical position.
5. Turn the nose of the valve cock such that the flow to the pump is closed (for flow on
the right: nose in 5 o'clock position, for flow on the left: nose in 9 o'clock position).
The mixing valve is now closed and drop tight (see figure below).
3.2.3 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.
The mixing valve is equipped with a bypass which must be operated separately. Via this
bypass, cooled water (during heating operation) or heated water (during cooling operation)
from the return is added to the flow of the CoolBloC. This can result in an increase of the
flow rate of the heating circuit.
Mixing valve with flow on the right:
Position 10:
Passage,
no mixing (when the bypass
is closed), flow temperature
consumer = flow temperature
boiler
Position 0:
100% mixing,
flow temperature consumer =
return temperature consumer
Mixing valve position 10
= 12 o'clock position
Mixing valve position 0
= 9 o'clock position
Flow of the pump closed,
5 o'clock position

3Product description
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1. During commissioning, determine the optimum bypass position for the operation
of the installation through a trial-and-error process.
If the slot of the bypass screw is
in a vertical position, the bypass
is closed.
If the slot of the bypass screw is in
a horizontal position, the bypass is
completely open. A maximum flow
rate from the return to the flow line
is thus enabled. This adjustment
may be necessary for radiant panel
heating systems which require a
very high water flow volume.
Because of the bypass, the flow
temperature decreases and the
control is affected.
2. Check the position of the bypass during operation. Make sure that the flow rate is
sufficient and that the desired temperature is reached.