PAW HeatBloC K36E - 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
2016/01 993603x2x-mub-en –V09 1
Installation and Operation Instructions
HeatBloC K36E - DN 25
Boiler charging set

1General Information
2 993603x2x-mub-en –V09 2016/01
Item no. 993603x2x-mub-en –Version V09 –Issued 2016/01
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

1General Information
2016/01 993603x2x-mub-en –V09 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
3.3 Thermo controller ................................................................................................................9
3.4 Check valve.......................................................................................................................12
4Assembly and installation [specialist] .......................................................................................13
4.1 Assembly of the HeatBloC and commissioning.................................................................14
4.2 Accessories: compression fitting (not included in delivery) ...............................................16
5Scope of delivery [specialist]....................................................................................................17
6Technical data .........................................................................................................................18
6.1 Pressure drop and pump characteristics...........................................................................19

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 and operation of the HeatBloC K36E.
For other components of the heating system such as pumps, controllers or distribution manifolds,
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 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.

2Safety instructions
2016/01 993603x2x-mub-en –V09 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 mentioned in this manual
CAUTION
Personal injury and damage to property!
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 not be used in domestic 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 of 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 K36E is a preassembled fitting group for hydronic heating closed-loop systems.
The pump can be isolated by means of the ball valves and can thus be maintained without draining
of the system.
You can mount the PAW HeatBloC directly onto a wall bracket or under/on a PAW modular
distribution manifold. With adaptor connections, PAW HeatBloCs can also be installed on
PAW distribution manifolds with other dimensions.
3.1 Equipment
A-1
Return (consumer circuit)
A-2
Thermo controller
B
Heating pump
C-2
Full metal thermometer integrated in
the ball valve (return, blue)
C-1
Return (boiler)
D-1
Flow (boiler)
D-2
Full metal thermometer integrated in
the ball valve (flow, red)
E
Flow tube
F
Design insulation with
optimised function
G-2
Check valve, can be opened
G-3
Coupling piece for
overhead installation
G-1
Flow (consumer circuit)

3Product description
2016/01 993603x2x-mub-en –V09 7
3.2 Function
K36E boiler charging set for return flow temperature maintenance
of solid fuel boilers, wood firing and stove heating systems
The boiler charging set prevents the temperature in the boiler
from falling under the dew point, thus reducing the contamination
of the boiler.
Applications:
The boiler charging set can be mounted to a buffer tank or
a hydraulic separator. When the opening temperature of
50 °C, 55 °C or 60 °C is reached in the boiler circuit, the
pump can charge a tank or serves to separate the
pressures in the hydraulic separator.
The following figure shows the adjustments necessary for
this system.
Buffer
tank
Solid
fuel boiler
Overflow valve closed
(adjustment knob screwed in)
Pump:
Operation mode: ∆p-c
Performance: maximum

3Product description
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The boiler charging set can be mounted under/on a
distribution manifold. In this system the pump exerts a
pressure on the entire installation. When the overflow valve
in the thermo controller is open, the pressure can be
reduced via the valve. Undesired circulation, which could
lead to overcharging of the domestic water tank, can thus
be prevented.
The following figure shows the adjustments necessary for
this system.
Domestic water
tank
Overflow valve open
(adjustment knob screwed out)
Solid
fuel boiler
Pump:
Operation mode: ∆p-c
Performance: ²⁄₃ max.
or speed level II

3Product description
2016/01 993603x2x-mub-en –V09 9
3.3 Thermo controller
The thermo controller is equipped with an overflow valve and a thermal control valve.
Overflow valve
In systems with a distribution manifold the pump of the boiler charging set exerts a pressure on the
entire installation. When the overflow valve in the thermo controller is open, the pressure can be
reduced via the valve. Undesired circulation, which could lead to overcharging of the domestic
water tank, can thus be prevented.
Overflow valve open
close
Overflow valve closed
open

3Product description
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Thermal control valve
The thermal control valve serves as a bypass in the startup phase.
1. When the temperature of the water in the boiler circuit is
lower than the opening pressure of the thermal control
valve, the valve is closed and thus the line to the
consumers. The water is circulated in the boiler circuit
through the completely opened bypass.
2. When the water in the boiler circuit has obtained the
opening temperature (+/- 3 K), the thermal control valve
opens the line from/to the consumers. The circulation in
the consumer circuit is thus guaranteed. The cold water
from the consumer return line is mixed in the control
valve with the hot water from the bypass. Depending on
the temperature and the flow rate of the water from the
return line, the thermal control valve shuts off or opens
the line to the consumers. Thus the return line which
leads to the boiler always remains at a certain
temperature level.
3. With rising temperature from the return line of the
consumers the thermal control valve opens the line to
the consumers completely. The temperature of the boiler
return remains nearly constant (+/- -3 K) until the buffer
tank is completely charged.