BRV Bonetti Rubinetterie Valduggia S.r.l.

MODVLVS

Regolare e distribuire energia pulita

ModvFresh 1

Pump unit to deliver fresh HDW with thermostatic controller, flow rate up to 20 l/min or 40 l/min. Possibility to make a parallel connection of up to 5 units for power up to 500 kW.

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DomvS Circ 1

Hot domestic water recycling kit for storage tanks with coils. 35÷60°C. Available version provided circulating pump with temperature sensor and timer. Available Kvs: 2,5 and 4,0.

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687 MIX

Very small size adjustment kit for distribution box, with motorizable 3-way rotating mixing valve. High efficiency circulating pump.

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1055

3-way motorizable rotating mixing valve for heating, cooling and solar thermal installations. Working as mixer or diverter. Kvs from 2,5 up to 25.

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M2 MIX3 FIX - DN25

2-Way pump unit with 3-way mixing valve with electronic servomotor for the constant temperature. Heating and Cooling.

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Logico

Multifunctional compact hydraulic module for the management of a direct circuit, a mixed circuit and the production of domestic hot water (DHW)

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Solar Kit 3

Solar-boiler thermostatic connection kit with adjustable diverting temperature. Control of the user temperature adjustable from 35°C up to 60°C with antiscald protection.

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1066

4-way motorizable rotating mixing valve for heating, cooling and solar thermal installations. Kvs from 2,5 up to 25.

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T10H

Thermostatic control head with liquid gas sensor, compatible M30x1,5. EN 215 approved, TELL certification.

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Solo 2

Pump unit for stratified loading to supply the heat produced by a solar thermal installation. Equipped with pre-programmed controller and Class A circulating pumps.

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MCCS 745

Anti-condensing recycling and distribution pump unit with thermostatic control of the return temperature to the solid fuel heating sources.

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CLIMA L - DN25

2-way pump unit with 3-way mixing valve and electronic circulating pump. Built-in Clima L 24VDC climatic controller for complex installations

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1610

Full bore 2-way zone ball valve, with bidirectional actuator with quick connection. Dimensions from 1/2" DN15 to 1"1/4 DN32.

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RCD2

Remote control of the heating system for AHC40 and CMP25-2 climatic controllers. Automatic pairing with climatic controller.

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514

Ball valve with filter in hot forged brass. To fill the installation. The filter can be easily removed, to be cleaned and inspected. Nickel plated.

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M2 FIX3 CS - DN20

2-Way pump unit with recycling thermic valve for solid fuel boilers. High efficiency circulating pumps. Start opening temperature 60°C, 45°C or 55°C.

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789R

High performance thermostatic diverting valve. Adjustable temperature from 38°C up to 54°C. Kvs 2,5 towards the gate, 3,5 towards the gate 2.

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DomvS Clima

Control unit for manifolds of heating and cooling radiant panels up to 200 m2. Fixed point thermostatic mixer or motorized rotary mixing valve. LCD room control unit.

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MCCS 745

Anti-condensing recycling pump unit with thermostatic control
Employment:

The anti-condensing pump unit allows to connect directly the solid fuel heating source to the heating system or to the buffer tank without any additional device.
As a matter of fact the pump unit includes into a compact and nice insulation box the circulating pump, the anti-condensing thermostatic valve, the on/off natural circulation clapet valve, the isolating valves and thermometers.
It automatically adjusts the return water temperature to the heating source to the selected setting value of the thermostat.

The device keeps the heating source at a high temperature level (always higher than the condensation one) in every possible condition of use, so avoiding deposits both into the boiler and into the chimney flue, in this way improving the efficiency and the life of it. Therefore also corrosion problems of the heating source or dangerous fires of the chimney are avoided.
 
Technical features:

Anti-condensing recycling and distribution pump unit with thermostatic control of the return temperature to the solid fuel heating sources.
Cast brass body CB753S. Yellow brass execution.
  • Synchronous high efficiency Wilo Yonos Para RS/7,5-RKC circulating pump with progressive speed control.
  • Maximum working pressure: 6 bar.
  • Maximum temperature: 100°C.
  • Setting temperature: 45°C, 55°C, 60°C and 72°C.
  • Natural circulation clapet valve: with external control, it can be set on or off according to the type of installation.
  • Temperature thermometers: 0-120°C.
Nominal opening temperature: setting temperature + 10 K.
Available external connections: 1” and 1”1/4  female, 28 mm for copper pipe.


PED 97/23/EC, art. 3.3
FIELD OF UTILIZATION:
For power up to 90 kW (with Δt 30 K) and maximum flow 2600 l/h.
For an accurate measuring or for higher flows, please refer to the curves.
Available calibration
temperatures:

45 = 45 °C
55 = 55 °C
60 = 60 °C
72 = 72 °C
 

Synchronous circulating pump:
Wilo Yonos Para RS/7,5-RKC (C8)
Installation:

The anti-condensing recycling pump unit can be placed on both sides of the heating source, following these directions:
  • On the return pipe to the boiler in mixing mode, following the flow directions shown on the body.
  • In vertical position (horizontal circulating pump axis) to allow the hydraulic working of the natural circulation clapet valve.
In order to optimize the anti-condensing control, we recommend the installation of the component on the return way to the boiler.
 

Installation placed on the right of the heating source.

Installation placed on the left of the heating source.
 
 
Working mode:

The schemes shown below represent the different working phases of the anti-condensing pump unit.
Please note that: the pictures have to be considered just as an indication and they have no completeness pretention.




  (1) Starting of the installation (boiler warming up)

After the starting of the boiler, the thermic valve is fully closed towards the user’s return (gate A) and this condition remains until the fluid, warmed up by the heating source, gets the opening temperature of the thermic valve (corresponding to the setting value, f.i. 55°C). During this step the fluid sent by the boiler fully recycles through the by-pass (gate B) and the boiler temperature rises very quickly.


  (2) Loading of the installation (tank warming up)

At the achievement of the opening temperature (f.i. 55°C) the users’ return way (gate A) proportionally starts to open, meanwhile the by-pass (gate B) is going to be closed. The boiler temperature slowly rises giving energy to the user, but in any case the return temperature will not decrease anymore below the setting temperature (f.i. 55°C).


  (3) Working installation

Starting from the condition of point 2, the supply temperature progressively rises up to the full opening of the thermic valve (gate A) and up to the corresponding shutting of  by-pass (gate B). This happens at about 10 K more than the opening or setting temperature (therefore in the example in hand, at about 65°C). Now the installation is on working and the supply fluid temperature can rise up to the set value.
  (4) Natural circulation

The natural circulation of fluid through the clapet valve starts as soon as the circulating pump stops and the remaining energy of the heating source is transferred to the water tank.
This function starts  as a security device, when the pump stops due to blackout or failure, so avoiding that the temperature of the heating source can reach high levels of danger.
To turn on the natural circulation function please turn the control screw anti-clockwise.
You can lock the clapet valve any time, turning the screw clockwise (this operation has to be done when the pump is working).
Lead screw    


Checking of working conditions
 
Click on the drawing to download pdf version in high-res
To show a relistic example, we take into account the following starting values:
  • Heating source power: 28 kW
  • Δt value: 20 K
The side diagram shows that the flow rate of 1,2 m3/h is a consequence of these choises.

In the diagram of the circulating pumps, at the bottom of the page, it is possible to cross geometrically this flow rate value with the curve of the sected speed. In correspondance with this crossing it is possible to read on the scale on the left side the lifting power developped by the pump in these conditions.
The Yonos Para RS/7,5 pump develops a 3,3 mH2O lifting power in correspondence of curve II.
In the specific case of our example, if this lifting power is not enough for the installation needs, a higher speed of the pump should be selected: Curve III.

Hydraulic performances

The hydraulic performances of the pump unit (A towards AB) have been tested at Wilo laboratories. These performances are substantially the same even in case of recycling flow (B towards AB).

Wilo Yonos Para
RS/7,5-RKC
Consumption: 3-76 W

Maximum speed (III)
Medium speed (II)
Minimum speed (I)
Progressive setting
of the speed.
 



Click on the drawing to download pdf version in high-res

• Direct supply to the distributor: up to 45 kW (with Δt 20 K)
and maximum flow rate of 1950 l/h. Lifting power: 4 mH2O
• With buffer tank: fino a 90 kW (con Δt 30 K)
and maximum flow rate of 2600 l/h. Lifting power: 2 mH2O


Test reports in pdf format, made directly by the Wilo laboratory are available:
they gather the results of performance analysis and verification of noise.

Dimensional specifications:





Specifications Dimensions
1"
1"1/4
28 mm
A
B
C
D
E
F
G
H

Weight [g]
192
221,5
162
124
13
196
187
79
3.700
192
221,5
162
124
14
200
189
81
3.750
192
221,5
162
124
18
200
189
81
3.750

Code 1”:  204MCCS-xx-C8
Code 1”1/4205MCCS-xx-C8
Code 28 mm:  228MCCS-xx-C8

Code composition: the suffix “xx” shows the setting temperature of the thermic valve;
example: 204MCCS-55-C8 (setting temperature 55°C)