Manual Nefit MM100 (page 17 of 108) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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6 720 813 621 (2014/12)MM100

Installation | 17

System components:

230 V AC Mains voltage

BT Buffer cylinder (Buffer Tank)

BUS BUS system EMS 2/EMS plus

CON User interface EMS 2/EMS plus (Control)

HS... Heat Source

HS1: heating appliance such as a wall mounted

Greenstar gas condensing boiler

HS2: boiler such as a gas heating boiler

HS3: heat pumps such as an air to water heat pump

IC1 Switching contact for external heat requirement ()

in the associated heating zone,  additional

accessories

MC1 Temperature switch in assigned heating circuit

(optional for heating circuit without mixer; if there is

no temperature switch, connect jumper ( Fig. 1

[2], page 91) to terminal MC1)

MM100 module MM100

PC1 Heating pump in the assigned heating circuit

PW1 Cylinder primary pump in assigned cylinder primary

circuit, e.g. after low loss header (coding card on 9

or 10)

PW2 Recirculation pump in the associated hot water

system (code switch on 9 or 10)

T0 Flow temperature sensor on the low loss header or

the buffer cylinder

TC1 Flow temperature sensor in assigned heating circuit

TW1 Cylinder temperature sensor in the assigned

cylinder primary circuit (coding card on 9 or 10)

VC1 Mixing valve actuator in assigned heating circuit

with mixer

1) Depending on the user interface installed,

maximum 4

3.3.4 Connection diagrams with system schematics

The hydraulic diagrams are only schematic illustrations and

provide a non-binding indication of a possible hydraulic circuit.

▶ Install safety equipment in accordance with applicable

standards and local regulations.

▶ For further information and options, refer to the technical

guides or tender specification.

Heating circuit function Fig. / Page

with mixer  19 / 98 

Heating  20 / 99  –

without mixer  21 / 100 

Cylinder primary circuit with separate cylinder primary pump

and DHW circulation pump  22 / 101 – 

constant  23 / 102 – 

1 unmixed, 3 mixed, 1 cylinder primary circuit with heating appliance  24 / 103 – 

1 unmixed, 3 mixed, 1 cylinder primary circuit with boiler  25 / 104 – 

1 unmixed, 3 mixed, hot water with heat pump  26 / 105  –

1 unmixed, 2 or more mixed, 2 cylinder primary circuit with heating appliance  27 / 106 – 

Table 5 Wiring diagrams with system examples for the module in combination with heat pump ( ) or other heat source ( )

1) e.g. downstream of low loss header

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Nefit MM100 Manual

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