Bedienungsanleitung Nefit MM100 (Seite 13 von 108) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Portugiesisch, Spanisch)

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Product details | 13

• Anti-seize protection:

– The connected pump is monitored and exercised for a

short while after 24 hours of non-activity. This

prevents the pump from seizing.

– The connected mixing valve actuator is monitored and

run automatically for a short period after 24 hours of

non-activity. This prevents the mixer from seizing up.

A maximum of 6 MM100 modules are permitted in one system

irrespective of the number of other BUS nodes.

As delivered, the coding card is in position 0. The module will

only be registered in the user interface if the coding card is in a

valid position for the heating circuit or cylinder primary circuit

(usually behind the low loss header).

A system schematic with 3 heating circuits with mixing valves,

one heating circuit without mixing valve and one primary

cylinder circuit is shown in Fig. 24 on page 103. A further

example with 3 or more heating circuits and 2 primary cylinder

circuits is shown in Fig. 27 on page 106.

2.1 Important notices on usage

The module communicates via an EMS 2/EMS plus interface

with other EMS 2/EMS-plus-enabled BUS nodes, such as

Greenstar boilers.

• The module must only be connected to user interfaces with

the EMS 2/EMS plus (Energy Management System) BUS

interface.

• The functional scope depends on the user interface

installed. Detailed information about user interfaces can be

found in the catalogue and technical guides and on the

manufacturer's website.

• The installation space must be suitable for the IP rating

stated in the module specification.

2.2 Standard delivery

Fig. 1, page 91:

[1] Module

[2] Jumper for connection to MC1 if there is no temperature

switch in the assigned heating circuit (without mixer)

[3] Bag with strain relief

[4] Installation set flow temperature sensor

[5] Installation instructions

2.3 Technical data

The design and operation of this product comply

with European Directives and the supplementary

national requirements. Its conformity is

demonstrated by the CE marking. You can ask for a copy of the

declaration of conformity for this product. For this see the

contact address on the back cover of these instructions.

WARNING: Risk of scalding!

▶ If DHW temperatures above 60 °C are set

or thermal disinfection is switched on, a

mixing valve must be installed at the DHW

outlet or at the DHW draw off points.

NOTICE: Floor damage!

▶ Underfloor heating systems must only be

operated with an additional temperature

limiter (MC1 connection).

Technical data

Dimensions (W×H×D) 151×184×61mm (further

dimensions  Fig. 2, page 91)

Maximum conductor

cross-section

• 230 V terminal

•Extra-low voltage

terminal

•2.5mm

•1.5mm

Rated voltages

•BUS

• Module power supply

•User interface

•Pump and mixer

• 15 V DC (reverse-polarity-

protected)

• 230 V AC, 50 Hz

• 15 V DC (reverse-polarity-

protected)

• 230 V AC, 50 Hz

Circuit breaker 230 V, 5 AT

BUS interface EMS 2/EMS plus

Power consumption on –

standby

<1W

Maximum output

• Per connection (PC1

Pump Connection)

• Per connection

(VC1 Mixing Valve

Connection)

• 400 W (high-efficiency

pumps permissible;

max. 40 A/s)

•100W

Temperature sensor

capturing range

• lower fault limit

•display range

• upper fault limit

•<– 10°C

•0-100°C

• > 125 °C

Table 3

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