8 Heating plant thermal

control units

DN25 mixing unit

Code

Circul.

Flow rate

m

3

/h

11 73 47

Wilo

1.5

Para 25/6

Specifications

Boiler con-

nections

1" F

User con-

nections

1" F

A

B

H

mm mm mm

250

390

190

DN25 mixing unit for heating and/or cooling systems, compact and ready for as-

sembly. Complete with 3-way mixing valve, prepared for rotating servo control, and

electronic circulator with EEI <0.20. Equipped with a ball valve with a thermometer

on the system's flow, ball valve with thermometer and releasable non-return valve

on the system's return. Covered by a black EPP heat insulating shell. Maximum

operating temperature 110°C (conform to the circulator's specifications). Maximum

operating pressure 10 bar. Mounting brackets not included.

Use

The mixing unit is a control device for both heating and cooling, and combines a

number of components that make it possible to control the delivery temperature

entering a radiant panel circuit, when the latter is an integral part of a mixed heating

system.

The temperature of the water entering the radiant circuit is controlled by a three-

way mechanical valve, which can be fitted with a 0-10V, 24V or 3-point 230V servo

control. This makes it possible to mix the water that comes from the boiler with the

water returning from the radiant circuit, and obtain the required water temperature,

calculated in real-time by a control unit.

The mixing unit can therefore be used to increase of lower the power supplied for

heating or cooling, adapting it to the actual demand by the user.

72

Manifolds and Temperature Control Units - Product Guide

Tel. +39 0425 75 88 11