Vaillant MultiMatic 700/2 Product Training

Weather compensator multiMATIC 700/2

Table of contents

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Table of contents

1 Marketing ...................................................................................................... 1

2 System overview .......................................................................................... 2

2.1 Controller ....................................................................................................... 2

2.2 Controller classification in accordance with ErP ............................................ 2

2.3 Optional accessories ...................................................................................... 3

2.4 Scope of delivery ........................................................................................... 4

3 Planning and dimensioning ........................................................................ 5

3.1 Planning requirements ................................................................................... 5

3.1.1 Installation locations ....................................................................................... 5

3.2 System examples ........................................................................................... 6

3.2.1 Planning information ...................................................................................... 6

3.2.2 Preliminary note to the following system diagrams ........................................ 6

3.2.3 Key for system diagrams and connection diagrams ...................................... 7

3.3 System diagrams and connection diagrams .................................................. 9

4 Application technology ............................................................................. 39

4.1 Appliance properties .................................................................................... 39

4.2 Using the controller ...................................................................................... 40

4.3 Displays/indicators ....................................................................................... 41

4.3.1 Menu display ................................................................................................ 41

4.4 Controller settings ........................................................................................ 42

4.4.1 Operating level 1 (basic user) ...................................................................... 42

4.4.2 Basic controller configuration (level 2) ......................................................... 48

4.5 Higher-level control functions ....................................................................... 59

4.5.1 Automatic configuration ............................................................................... 59

4.5.2 Sensors ........................................................................................................ 60

4.5.3 DCF signal ................................................................................................... 60

4.5.4 Energy manager .......................................................................................... 60

4.5.5 Chimney sweep mode ................................................................................. 60

4.5.6 Pump blocking protection ............................................................................. 61

4.5.7 Installer level (level 3) .................................................................................. 61

4.5.8 Summary of level structure .......................................................................... 80

5 Installation, start-up ................................................................................... 85

5.1 Installation .................................................................................................... 85

5.1.1 Installing the controller in the unit electronics box ....................................... 85

5.1.2 Wall-mounting the controller ........................................................................ 86

5.1.3 Installing and connecting the VR 70 module ................................................ 87

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5.1.4 Installing and connecting the VR 71 module ................................................ 89

5.2 Start-up ........................................................................................................ 91

5.2.1 Settings in the Installation assistant ............................................................. 91

5.2.2 Settings matrix: System diagram and configuration for the VR 70, VR 71 ... 92

5.2.3 Settings and displays/indicators on the VR 91 ............................................. 93

6 Maintenance/troubleshooting ................................................................... 97

6.1 Maintenance messages ............................................................................... 97

6.2 Fault messages ............................................................................................ 98

6.3 Sensor values ............................................................................................ 100

6.4 Additional troubleshooting information ....................................................... 101

6.4.1 Power supply for the VR 70, VR 71 ........................................................... 101

6.4.2 Checking the eBUS power supply ............................................................. 101

6.4.3 Faulty eBUS communication ...................................................................... 101

6.4.4 No display, VRC 700 (built into the electronics box) not working ............... 101

6.4.5 Blank display (controller in living room) ..................................................... 101

7 Appendix ................................................................................................... 102

7.1 Knowledge check ....................................................................................... 102

7.2 Checklist .................................................................................................... 104

7.3 Energy-saving tips ..................................................................................... 105

multiMATIC 700/2

Notes

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1 Marketing

Please refer to the corresponding marketing presentation for marketing notes and ben-

efits.

multiMATIC 700/2

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2 System overview

2.1 Controller

multiMATIC 700/2

The multiMATIC 700/2 is a weather compensator that controls heating, cooling, venti-

lation and hot water generation. The eBUS controller is designed for use with products

that are equipped with eBUS electronics.

2.2 Controller classification in accordance with ErP

star

Bonus

Type

Product

I

1.0%

Mechanical "On/Off" room temperature controller

VRT 15

II

2.0%

Modulating weather-controlled control system

VRS 620, VRC 630, VRC 450(f),

VRC 470(f), VRC 700, VRC 700/2

III

1.5%

Weather-controlled "On/Off" control system

Not a Vaillant product

IV

2.0%

Electronic "On/Off" room temperature controller

VRT 35(f), VRT 250(f)

V

3.0%

Modulating room temperature controller

VRT 50, VRT 350(f),

VRT 370(f)

VI

4.0%

Modulating room temperature controller

with room temp. mod.

VRS 620, VRC 630, VRC 450(f),

VRC 470(f), VRC 700, eRELAX/

vSMART, VRC 700/2

VII

3.5%

Weather-controlled "On/Off" control system

with room temp. mod.

Not a Vaillant product

VIII

5.0%

≥ 3 modulating room temperature controllers

with room temp. mod.

VRS 620 + VR 60 + 2x VR 90 or

VRC 630 + 2x VR 90 or

VRC 700/2 + VR 71 + 2x VR 91

* Installation in the living area

Auto

13.5 °C

11:54

23.0 °C

Desired heating temp. 23.0 °C

Menu

Op. mode

multiMATIC 700/2

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2.3 Optional accessories

VR 70 – mixer and solar module

- Can be used with the multiMATIC 700/2

- Expansion to incorporate up to two regulated heating

circuits

- Expansion to incorporate a solar controller for heating

and domestic hot water

- Basic buffer cylinder management and allSTOR buffer

cylinder management

- Connections for actuators and sensors

VR 71 – Mixer module

- Can be used with the multiMATIC 700/2

- Expansion to incorporate up to three regulated heating

circuits

- Basic buffer cylinder management

- Hot water generation by means of a domestic hot water

cylinder

- Connections for actuators and sensors

VR 91 – Remote control

- Can be used with the multiMATIC 700/2

- Remote control with room temperature control

- Setting the target room temperature

- Measuring room air humidity when the cooling function is

activated

VR 40 – multi-functional module 2 of 7

for connecting:

- Circulation pump for hot water generation

- External heating pump

- Fault/operational warning

The controller is not backward compatible. This means that other eBUS acces-

sories cannot be combined with the multiMATIC 700/2.

multiMATIC 700/2

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Possible combinations of controllers and controller accessories

Controller

VR 70

VR 71

1 x VR 91

2 x VR 91

VRC 700









VRC 700/2















 = Combination possible

 = Combination possible, but makes no sense

 = Combination not possible

2.4 Scope of delivery

The following items are contained in the scope of delivery of the multiMATIC 700/2:

1 pc

multiMATIC 700/2

1 pc

VRC 9535 (DCF) or VRC 693 external sensor

1 pc

Installation accessories (screws and rawl plugs)

1 pc

6-pole edge connector for connection of AF with heat generator for plug location X41

1 pc

Three-pin header for horizontal plug connection in old unit electronics boxes

1 pc

Operating and Installation Manual

multiMATIC 700/2

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3 Planning and dimensioning

3.1 Planning requirements

3.1.1 Installation locations

● Hanging on an interior wall in the living area.

● Alternative: Installation in the boiler's electronics box

Hanging the controller on the wall: The controller should be installed in a place

where it can accurately detect the room temperature; for example on an internal wall in

the reference room, approximately 1.5 m from the ground. When hanging the controller

on a wall,

connect it to the boiler using a 2-core eBUS line.

External sensor

The external sensor should be installed in a location with the following characteristics:

● Not fully sheltered from the wind

● Not particularly draughty

● Not in direct sunlight

● Not affected by heat sources

● On a north or north-west facing façade

When fitting the external sensor on

● buildings with up to three floors, it should be located two-thirds of the way up the

façade.

● On buildings with more than three floors, it should be fitted between the second

and third floor.

multiMATIC 700/2

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3.2 System examples

3.2.1 Planning information

Inside the unit:

 Return temperature control with underfloor heating: In single-circuit installations

that do not have a low loss header in the boiler's DIA system and are designed to

provide underfloor heating, the control type can be changed from flow to return

temperature control.

 In installations that have a low loss header and a VRC 700/2 control system,

the required VR 10 external flow temperature sensor is connected to the ProE X41

plug of the unit's electronic circuitry (terminals 0 and RF) or to the VR 70 module.

 Controlling the circulation pump: If the boiler does not have the required connec-

tion terminals, the circulation pump can be controlled using the "multi-functional

module 2 of 7" (VR 40) accessory unit or, if available, a VR 70 module.

Control:

 Circulation/legionella protection pump: In conjunction with a multiMATIC 700/2,

the pump can be programmed to operate at specific times.

Hydraulics

 Safety devices: When planning the system, check whether there are safety devices

(expansion relief valve and expansion vessel) of a sufficient size in the units. If this

is not the case, additional components must be installed in the system. When de-

signing the system, DIN EN 12828 must be observed for each heat generation cir-

cuit.

 Dirt filter: It is recommended that clients fit a dirt filter to protect the heat generators

and system components in old systems from excessive ingress of dirt.

3.2.2 Preliminary note to the following system diagrams

System diagrams 3, 4, and 5 are currently not supported. You can find an overview of

the system diagrams and configurations for VR 70 and VR 71 in section 5.2, "Start-up".

In the following there is shown one example for all systems diagrams. A com-

plete overview of all system diagrams can be found in the system diagram

book.

multiMATIC 700/2

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3.2.3 Key for system diagrams and connection diagrams

Item

Description

Item

Description

1

Heat generator

25

Solar pump unit

2

Heat generator pump

26a

Solar charging system

2a

Swimming pool circulation pump

26b

Drinking water station

2b

CHP circulation pump

27

Cylinder charging pump

2c

Hot water charging pump

28

Zone valve

3

Heat pump

29

Thermal discharge safety device

3a

Passive cooling assembly

30

Non-return valve

4

Buffer cylinder

31

Regulating valve

5

Domestic hot water cylinder

32

Cap valve

5b

DHW cylinder with pipe heat exchanger

33

Dirt trap

5c

Multi-functional cylinder

33a

Sludge separator set

6

Tank in tank

34

Increase in return flow

7

Sequence cylinder

34a

Increase in return flow mixing

8

Solar combi storage tank

35

Flow switch

9

Gas cock

36

Thermometer

10

Thermostatic radiator valve

37

Air separator

12

Unit electronics

38

Diverter valve (internal)

13

Heat generator control system

39

Thermostatic mixer

13a

Remote control unit

40

Heat exchanger

13b

Mixer module

42a

Expansion relief valve

13d

Hot water charging controller

42b

Diaphragm expansion tank

13e

System controller

42c

Diaphragm expansion vessel for drinking

water

13f

Expansion module

43

Safety group for water connection

13g

Solar module

45

Low loss header

13h

eBUS bus coupler

48

Pressure gauge

14

Swimming pool controller

49

Flow meter (Taco setter)

15

Condensate pump

50

Bypass valve

16

Outside temperature sensor/DCF receiver

51

Hydraulic block

16a

Outside temperature sensor

52

Individual room control valve

17

Drinking water station (DWS)

53

Heat recovery module

18a

Hot water charging sensor

53a

Flexible connections

18b

Hot water generation cylinder sensor

56

Heat pump brine filling unit

19

Limit thermostat

57

Brine expansion tank

20

Flush connection

58

Filling and draining valve

21

Flue gas thermostat

59

Solar automatic air vent with lock

22

Cut-off relay

60

Purging valve

24

Home unit

63

VFK solar collector

multiMATIC 700/2

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Item

Description

Item

Description

63a

VTK solar collector

64

Solar in-line vessel

65

Collecting container

66

Pump, cooling circuit

67

3-way mixer

67a

3-way mixer, cooling

67b

3-way mixer, passive cooling assembly

68

Fan coil convector

69

Tundish

70

Air collector

71

VWL 10/3 SA outside unit

72

Well pump

84

Swimming pool

93

Compact buffer cylinder

R1

Pump

R2

Pump

R3/R4

Mixer/pump/valve

R5/R6

Mixer/valve

S1

Cylinder/solar/

Δϑ sensor temperature sensor

S2

Cylinder/solar/

Δϑ sensor temperature sensor

S3

Cylinder/solar/

Δϑ sensor temperature sensor

S4

Flow/Δϑ sensor temperature sensor

S5

Flow/Δϑ sensor temperature sensor

S6

Flow/Δϑ sensor temperature sensor

S7

PWM signal

Drinking water

Solar flow

Domestic hot water

Solar return

Circulation

Heat source flow

Wiring

Heat source return

Heating flow

Cooling flow

Heating return

Cooling return

multiMATIC 700/2

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3.3 System diagrams and connection diagrams

System diagram 1.1

This system diagram does not contain all of the cut-off and safety devices required for correct installation. Comply with the

applicable standards and directives. Comply with the necessary minimum circulation water volumes in the heating circuit.

System diagram = 1

VR 70 configuration= 1

multiMATIC 700/2

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Connection diagram 1.1

18b

multiMATIC 700/2

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System diagram 1.2

This system diagram does not contain all of the cut-off and safety devices required for correct installation. Comply with the

applicable standards and directives. Comply with the necessary minimum circulation water volumes in the heating circuit.

System diagram = 1

VR 70 configuration= 3

multiMATIC 700/2

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Connection diagram 1.2

multiMATIC 700/2

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System diagram 1.3

This system diagram does not contain all of the cut-off and safety devices required for correct installation. Comply with the

applicable standards and directives. Comply with the necessary minimum circulation water volumes in the heating circuit.

System diagram = 1

VR 71

multiMATIC 700/2

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Connection diagram 1.3

multiMATIC 700/2

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System diagram 2

This system diagram does not contain all of the cut-off and safety devices required for correct installation. Comply with the

applicable standards and directives. Comply with the necessary minimum circulation water volumes in the heating circuit.

System diagram = 2

VR 70 configuration= 1

multiMATIC 700/2

Notes

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Connection diagram 2

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Vaillant MultiMatic 700/2 Product Training

Vaillant MultiMatic 700/2 Product Training

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