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
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1 Marketing
Please refer to the corresponding marketing presentation for marketing notes and benefits.
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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, ventilation 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
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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 accessories 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
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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.
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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 designing the system, DIN EN 12828 must be observed for each heat generation circuit.
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 complete overview of all system diagrams can be found in the system diagram
book.
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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
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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
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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
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Connection diagram 1.1
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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
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Connection diagram 1.2
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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
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Connection diagram 1.3
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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
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Connection diagram 2
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System diagram 6
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 = 6
No VR 70
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Connection diagram 6
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System diagram 7
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 = 7
VR 70 configuration= 1
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Connection diagram 7
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System diagram 8.1
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 = 8
No VR 70
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Connection diagram 8.1
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System diagram 8.2
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 = 8
VR 71
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Connection diagram 8.2
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System diagram 8.3
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 = 8
VR 71
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Connection diagram 8.3
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System diagram 8.4
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 = 8
No VR 70
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Connection diagram 8.4
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System diagram 9
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 = 9
VR 70 configuration= 5
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Connection diagram 9
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System diagram 10
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 = 10
No VR 70
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Connection diagram 10
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System diagram 11
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 = 11
No VR 70
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Connection diagram 11
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System diagram 12
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 = 12
VR 70 configuration= 5
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Connection diagram 12
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System diagram 13
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 = 13
VR 70 configuration= 1
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Connection diagram 13
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4 Application technology
4.1 Appliance properties
The controller is equipped with an illuminated, graphic display.
Plain text is used in the display for easy user guidance.
Different target room temperatures are set for the heating and set-back phases.
Daily heat-up times can also be specified for hot water generation.
When installing the controller, the competent person will set it for use either with two
independent heating circuits, e.g. in single-occupancy houses and self-contained flats,
or with two heating circuits, e.g. for radiators and underfloor heating.
The controller has two selection buttons and a rotary knob. Both selection buttons have
a soft key function. The function changes depending on your location in the program
structure and which entry is selected.
The installation assistant will guide you through the configuration process both during
initial start-up of the controller and after performing controller resets.
User-group-specific parameters are combined at separate menu levels. Settings for the
code level cannot be made until after an enabling code has been entered.
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4.2 Using the controller
5 4 3 2 1
Operating and display front panel
Key
1 Diagnostic socket for the competent person
2 Right-hand selection button for "Operating mode" (soft key function)
3 Rotary knob (cannot be pressed)
4 Left-hand selection button for "Menu" (soft key function)
5 Display
You can use the selection buttons to
navigate to one selection level lower or higher within the program structure,
highlight a setting,
confirm a set value,
activate an operating mode directly, or
cancel the change to a set value.
You can use the rotary knob to
navigate to the left or right through the entries on a selection level, by turning to the
left or right,
highlight a selection level or a setting, or
change a selected set value.
Auto
13.5 °C
11:54
23.0 °C
Desired heating temp. 23.0 °C
Menu
Op. mode
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4.3 Displays/indicators
Basic display
Key
1 Current outside temperature
2 Current room temperature (only shown for wall-hung installations)
3 Time
4 Current function of the right-hand selection button
5 Current function of the left-hand selection button
6 Desired temperature (target room temperature set)
7 Symbol for heating mode in "Auto" operating mode
8 Operating mode that has been set for heating
4.3.1 Menu display
Menu
Information
Desired temperatures
Time programmes
Back
Select
Menu display
Key
1 Scroll bar (appears when there are more entries than can be shown)
2 Display field of the executable functions via the selection buttons
3 Display field in which the following information can be displayed: The next selection levels, settings, sys-
tem data or fault messages
4 Display field in which the following information can be displayed: The current selection level, basic data,
activated advanced functions or maintenance messages
Auto
13.5 °C
11:54
23.0 °C
Desired heating temp. 23.0 °C
Menu
Op. mode
1 4 3
2
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4.4 Controller settings
The following information explains the operating concept of the controller. It will show
how easy it is to operate the controller, the functions of which are divided up according
to the following customer groups: Basic users, technically experienced users and competent persons.
Controller operation is therefore divided up into the following three user-specific levels:
1. Basic user: Current desired temperature and operating modes.
2. Technically experienced user: Basic controller configuration.
3. Competent person: Installer level.
4.4.1 Operating level 1 (basic user)
4.4.1.1 Setting/changing the desired temperature
Display
Turn the rotary knob clockwise or anti-clockwise to switch on the background lighting.
The basic display will disappear and a request will appear asking whether you wish to
change the desired temperature for the current operating mode only or whether you
wish to keep it permanently. The display switches back to the basic display after 12
seconds. The temperature you have set will be applied without you having to save it
again and will be valid for six hours.
Desired day temperature
Only today:
22.0 °C
For permanent change
Press OK
OK
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4.4.1.2 Setting/changing the operating mode
Operating mode selection menu
Pressing the right-hand selection button in the basic display will call up the operating
mode menu on the display. This contains setting options to enable the user to operate
the system efficiently in different day-to-day situations.
*1)
Off, Auto, Day, Set-back
*2)
Off, Auto, Day
*3)
Auto, Day, Set-back
*4)
Off, Auto, Day
Menu structure
Ventilation boost
Cylinder boost
System OFF active
Heating
*1)
Manual cooling
*5)
1 day at home
Party function
Cooling
*2), *5)
Ventilation
*3)
Domestic hot water
*4)
1 day away from home
= Only in conjunction with recoVAIR .../4
*5)
= Displayed if "Cooling possible" = "Yes" selected in the system configuration
Operating mode
Heating
Auto
Domestic hot water
Auto
1 day at home
Back
Change
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The settings described below for the operating modes and advanced functions
only change the zone that was previously set in the "Configure heating circuit"
menu item in the installer level. The setting parameters of any other zones can
be accessed via the Menu button. This document provides a definition for a
zone at a later point.
4.4.1.3 Heating operating modes
The control system uses the target values and time programmes that have been specified, as well as other parameters such as the heating curve.
The time periods for each zone can be set in the "Time Programmes" function.
Within these time periods, the controller works using the "Day temperature".
Outside these time periods, the controller works using the controller behaviour that the
competent person has preset for the specific customer. There are three controller behaviours to choose from:
Eco: The heating function has been switched off and the outside temperature is monitored. If the outside temperature falls below 3 °C, the controller switches the heating
function on (after the frost protection delay time has elapsed) and adjusts the target
room temperature to the "Set-back temperature" that has been set.
The heating function remains on until the outside temperature rises above 4 °C, after
which the controller switches the heating function off again but continues to monitor the
outside temperature.
Set-back: The heating function is switched on if the outside temperature falls below
the "Set-back temperature" that has been set. The room set target value is the "Setback temperature" that has been set.
Automatic mode
Automatic mode
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This function controls the zone(s) of the heating installation in line with the target room
temperature that has been set, without taking the time period into account. The controller works using the "Day temperature" that has been set.
This function controls the zone(s) of the heating installation in line with the target room
temperature that has been set, without taking the time period into account. The controller works using the "Set-back temperature" that has been set.
All functions (incl. solar) are switched off. Frost protection functions are activated.
Frost protection function
The frost protection function protects the heating installation and apartment from frost
damage. It is also active in the "System off" operating mode. The frost protection function monitors the outside temperature.
If the outside temperature falls below 3 °C, the controller switches the boiler on (af-
ter the frost protection delay time has elapsed) and works using a target room temperature of 5 °C.
If the outside temperature rises above 4 °C, the controller continues to monitor the
outside temperature but switches the boiler off.
Comfort mode
Set-back mode
System OFF active
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4.4.1.4 Advanced functions
Please note that only one advanced function can be used at a time.
The function should be enabled if the user spends a day at home outside the usual
sequence. The following changes are made:
The function activates "Automatic mode" for one day with the settings for "Sunday",
as set using the "Time programmes" function.
The desired temperature can be changed using the rotary knob. This change will be
applied permanently as the "Desired day temperature".
The function is automatically deactivated at midnight or cancelled beforehand by
the user. The heating installation will then go back to working in the operating mode
that was previously set.
The "1 day at home" function can be activated from any operating mode.
This function is useful if the user is not at home for a day. The time periods do not
need to be changed, e.g. increasing the target room temperature over the day. This
function makes the system exit the active operating mode as follows:
The target room temperature is set to the "Set-back temperature" and then adjusted
accordingly.
The temperature can be changed using the rotary knob. This change will be applied
permanently as the "Desired set-back temperature".
Hot water generation and the circulation pump are switched off and frost protection
is activated.
The function is automatically deactivated at midnight or may be cancelled by the
user.
The "1 day away from home" function can be activated from any operating mode.
Switches off the zones(s) for ventilating the living rooms. When the "ventilation boost"
function is activated:
1 day at home
1 day away from home
Ventilation boost
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The controller switches off the zone for 30 minutes and the frost protection function
is activated.
The operating mode that was previously set is reactivated once this time has
elapsed.
Hot water generation and the circulation pump remain on.
The "Party" function can be used in order to avoid having to change the settings on the
controller for short periods of time (extending the heating times).
The controlling behaviour is as follows:
The controller sets the target room temperature to the "Day temperature" that has
been set.
The desired temperature can be changed using the rotary knob. This change will be
applied permanently as the "Desired day temperature".
Hot water generation and circulation are switched on.
The function will be deactivated after 6 hours or after it has been cancelled. The
heating installation will then go back to working in the operating mode that was previously set.
The "Party" function can be activated from any operating mode.
This is where the cooling function can be activated for a specific number of days.
The desired temperature can be changed using the rotary knob.
The operating mode that was previously set is reactivated once this number of days
has passed.
Heats the domestic hot water cylinder once. If hot water generation is switched off or
hot water is required outside of a time period, the "Cylinder boost" function quickly
heats the water in the domestic hot water cylinder to the target value that has been set.
Party function
Manual cooling
Cylinder boost
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4.4.2 Basic controller configuration (level 2)
General information about reading the following menu trees
The menu items with the background contain further information that can be
called up by pressing the selection buttons.
Basic display
With the Menu button, you can:
read off information,
set system-specific values such as time pro-
grammes,
set and apply basic settings that are reserved for technically experienced users.
Settings are normally applied by the competent person. The last sub-item provides
access to the installer level (level 4), which is protected by a 3-digit code. The code
set in the factory is: 000.
The number of values displayed/that can be changed depends on whether accessories such as the VR 70, VR 71 module or the VR 91 remote control are
connected.
Accessories connected via eBUS also have an effect on the number of values
displayed/that can be changed.
Installer level
Information
Desired temperatures
Time programmes
Days away from home
scheduling
Days at home scheduling
Basic settings
Ventilation stage
= Only in conjunction with recoVAIR .../4
Auto
13.5 °C
11:54
23.0 °C
Desired heating temp. 23.0 °C
Menu
Op. mode
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4.4.2.1 Information
The "Information" menu item allows users
and the competent person to read the status of all the important values in the system quickly.
If help is required, the user will find the
name and telephone number of the specialist company that can help with queries
relating to the controller and its serial
number.
Prompt
Select
Comment
Fault status
No fault, Fault list
If "Fault list" is displayed, the cause of the warning can be
found using the "Display" button.
Water pressure
Display in bars
If the heat generator has been fitted with a water pressure
sensor, the current heating water pressure in the heat generator is displayed.
System status
Standby, Heat.
mode, Cooling,
DHW
Displays the current status of the system
Collector temp.
Display in °C
Only with the VR 70 = 6, 12
(The calculated solar yield of the VPM S, VPM D, VMS
and auroSTEP plus is also transferred to the VRC 700)
Solar yield
Display in kWh
Reset solar yield
Yes, No
Environmental yield
Display in kWh
Only in conjunction with geoTHERM 3 kW, aroTHERM
and flexoTHERM
Reset environmental yield
Yes, No
Current room air
hum.
Display in %
Display only for wall-mounted controllers
triVAI
Only in conjunction with geoTHERM 3 kW, aroTHERM
and flexoTHERM, if Hybrid manager = triVAI
ZONE 1 / ZONE 2 / ZONE 3*1
Day temp. heating
5.0–30.0 °C
Displays the current target value for the room temperature
during heating
System status
Information
System status
Contact details
Serial number
Environmental yield
Solar yield
Heat recovery
Consumption
Fuel consumption *2
Electrical consumption *3
= With geoTHERM 3kW, aroTHERM, flexoTHERM
= With VR 70 = 6, 12
= With recoVAIR …/4
= With ecoTEC exclusive …/5, flexoTHERM
*1
: Two zones with VR 70 = 1, 5 /three zones with VR 71
*3
: Also with ecoTEC exclusive, VR 71
*2
: Not with flexoTHERM, VR 71
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Prompt
Select
Comment
Day temp. cooling
15.0–30.0 °C
Displays the current target value for the room temperature
during cooling
Set-back temp.
heat.
5.0 – 30.0 °C
Displays the current target value for the room temp.
Room temperature
Display in °C
Display only for wall-mounted controllers
Ventilation
Air quality sensor 1
Display in ppm
Only in conjunction with recoVAIR .../4
Air quality sensor 2
Display in ppm
Exhaust air humidity
Display in %
Yield/consumption display
The graphic display provides an overview of the controller's yield/consumption over a
maximum of two years. The total yield/consumption is continuously updated, and the
monthly yield/consumption bar and its display at the top right are updated every day at
00:00. To reset the total yield/consumption, go to "System status".
The calculated solar yield of the VPM S, VPM D, VMS and auroSTEP plus is
also transferred to the VRC 700.
Solar yield / environmental yield / electrical consumption /
fuel consumption / heat recovery
Key:
1
Controller
2
Highest monthly yield/consumption
3
Total yield/consumption since reset
4
Yield/consumption graph for the
previous year
5
Yield/consumption graph for the
current year
1
2 3 5
4
Back
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4.4.2.2 Consumption
The "Consumption" menu item is displayed only in conjunction with the ecoTEC exclusive …/5 gas-fired wall-hung
boiler, the flexoTHERM heat pump and
the VR 71. It allows both the user and the
competent person to read the installation's consumption data.
Prompt
Select
Comment
Heating
Electricity
Display in kWh
Only in conjunction with ecoTEC exclusive …/5,
flexoTHERM, VR 71
Fuel
Display in kWh
Domestic hot water
Electricity
Display in kWh
Only in conjunction with ecoTEC exclusive …/5,
flexoTHERM, VR 71
Fuel
Display in kWh
Installer/Phone number: The name and phone number entered under "Installer menu
> Service information > Contact details" can be seen here.
The serial number and controller type (e.g. VRC 700) can be read here.
Current month/Last month/History
Contact details
Serial number
Gas
Electricity
Gas
Electricity
Current month
Last month
History
Heating
Domestic hot
Gas
Electricity
Gas
Electricity
Heating
Domestic hot
Gas
Electricity
Gas
Electricity
Heating
Domestic hot
Consumption
= Only in conjunction with ecoTEC exclusive …/5, flexoTHERM, VR 71
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4.4.2.3 Desired temperatures
Each of the set temperatures is a "target value". A wide variety of external influences determine whether the selected temperatures for
the zones in the control room will be reached.
Layout of zones and heating circuits
1 heating circuit, 2 zones (aroTHERM only) 2 heating circuits, 2 zones
Key
HC1 Heating circuit 1
HC2 Heating circuit 2
Z1 Zone 1
Z2 Zone 2
A zone is defined as an area with its own target room temperatures and time pro-
grammes that is assigned to a heating circuit. The settings are configured in the end
customer level. Parameters relating to the flow temperature are mainly set in the heat-
ing circuit. The settings are configured in the installer level.
It is currently possible to build a system that has either one heating circuit with one
zone, one heating circuit with two zones (aroTHERM only), and two or three heating
circuits with one zone each. The relevant parameters can be found in the system configuration section of the installer level under "Heating circuit 1/2/3" and "Zone 1/2/3".
Desired temperatures
ZONE 1 / 2 / 3*1
Domestic hot
*1
: Two zones with VR 70 = 1, 5 / three zones with VR 71
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Day temp. heating: The temperature that is set applies to:
Automatic mode: Within the time periods programmed for a week.
Comfort mode,
Override mode,
"1 day at home" or "Days at home"
Day temp. cooling: The temperature that is set applies to:
Automatic mode: Within the time periods programmed for a week.
Comfort mode,
Override mode,
"1 day at home" or "Days at home"
Set-back temp. heat.: The temperature that is set applies to:
Automatic mode: Outside all the time periods that have been programmed for a
week. "Set-back temp." or "Eco" must be set in the installer menu under "System
configuration > Heating circuit 1 > Auto Off mode" in order to use this function.
Energy-saving mode
"1 day away from home" or "Days away from home"
ZONE 1 / 2 / 3
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The set temperature applies to:
Automatic mode: Within the time periods programmed for a week.
Comfort mode
4.4.2.4 Time programmes
Up to three time windows may be set per day
or block. The minimum interval is 10
minutes. The times set at the factory for each
of the time programmes are:
ZONE, DHW circuit, Circulation:
Mo – Fr 06:00 – 22:00
Sat. 7:30 – 23:30 hours
Sun 7:30– 22:00 hours
Ventilation, Noise reduction operation:
Mo – Su 00:00 – 00:00
High tariff:
Mo – Su 11:00 – 13:00
Time programmes
The controller indicates any conflicts that occur during programming by showing "!!-!!"
in the time period. Example: The heating times for ZONE 1 are different on weekdays
and at weekends.
When block programming for Monday to Sunday is called up, "!! - !!" appears in order
to indicate that any time periods which have already been programmed will be deleted.
Domestic hot water
High tariff
Time programmes
ZONE 1 / 2 / 3 *1
Domestic hot water
ZONE 1 / 2 / 3: Cooling *1
Noise reduction operation
Ventilation
Circulation
= Displayed only in conjunction with geoTHERM 3 kW, aroTHERM, flexoTHERM
= Only in conjunction with recoVAIR .../4
*1
: Two zones with VR 70 = 1, 5 / three zones with VR 71
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4.4.2.5 Days away from home scheduling
This function allows you to set a period and a temperature for an extended absence.
You can specify the start and end date and the target room temperature.
Hot water generation and the circulation pump are switched off and frost protection is
activated.
While the "Days away from home scheduling" function is activated, this has priority
over the operating mode that has been set. After the specified time period has elapsed,
or if the function is cancelled, the operating mode that was previously set is reactivated.
4.4.2.6 Days at home scheduling
This function allows you to plan days that will be spent at home. Time periods, e.g. reducing the target room temperature over the course of the day, do not need to be
changed.
Within the specified period, the heating installation works in "Automatic mode" and uses the day settings for "Sunday", which were set using the "Time programmes" function. Once this period has ended, the heating installation will go back to working in the
operating mode that was previously set.
This function has priority over the "Days away from home scheduling" function.
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4.4.2.7 Basic settings
The following languages can be configured in the controller: DE, GB, FR, IT, DK, NL,
ES, TR, HU, RU, UA, EE, LV, LT, SE, NO, PL, CZ, HR, SK, RO, SI, KR
If the display language is erroneously set to one the user is unable to understand, the
following instructions can be used to reset to the local language:
Press the left-hand selection button repeatedly until the basic display appears.
Press the left selection button again.
Turn the rotary knob to clockwise until the second entry above the dotted line is
highlighted.
Press the right selection button twice.
Turn the rotary knob until you find a language that you understand.
Press the right selection button.
Language
Basic settings
Language
Date/time
Display
Operating mode
Enter zone name
Default setting
Offset
Costs
Max. room air humidity
Ventilation
= Only in conjunction with geoTHERM 3 kW, aroTHERM, flexoTHERM
= Only in conjunction with recoVAIR .../4
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This function enables the current time and date to be set manually. If the controller's
external sensor is equipped with a DCF receiver, the controller receives a DCF 77 time
signal and sets the date and time automatically.
Menu structure
Adjusting the display contrast allows you to optimise the legibility of the display text.
The settings range is between 1 and 15.
If you set the button lock to "On", it will be activated immediately and you will not be
able to operate the controller again until you press the "OK" button for 3 seconds. The
button lock will be reactivated if there is no activity on the controller for 1 minute. This
prevents the parameters from being changed unintentionally.
This can be used to select whether the controller's basic display shows the temperature for heating or cooling or whether it shows the ventilation stage; either of these can
then be changed directly from the basic display.
Date/time
Display contrast
Button lock
Preferred display
Display
Display contrast
Room temperature
Outside temperature
Offset
Preferred display
Button lock
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The value measured by the sensor is offset by the value that has been set. This compensates for external influences on temperature.
Adjustment range for room temperature offset: -3.0 to +3.0 K.
Adjustment range for outside temperature offset: -3.0 to +3.0 K.
The "All" presetting means that the operating mode can only be changed or set
from the basic display (by pressing the "Operating mode" soft-key button).
If this is not selected, the operating modes for the zones can be set either using the
"Menu > Basic setting > Operating mode" selection button or from the basic display
using the "Operating mode" selection button.
Difference:
The "Operating mode" selection button can be used to directly select the operating
mode that the competent person has preset for a particular zone (All, Zone1,
Zone2, Zone3) *1
The "Menu > Default setting > Operating mode" selection button can be used to se-
lect and set the operating mode for each zone separately.
Assigning the zones to sections can help the user program the system correctly/use
the correct settings.
This is where the operating mode for heat recovery can be set. There are three options
to choose from: "Auto", "Activate" and "Off".
Offset room temp.
Offset outside temp.
Operating mode
Enter zone name
Ventilation
*1
: Two zones with VR 70 = 1, 5 / three zones with VR 71
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4.4.2.8 Default setting
The factory settings can be reset at two levels:
Time programmes
Everything
If "everything" has been selected, the controller
starts by searching for eBUS system components.
After resetting to the default setting, the controller automatically calls up the installation
assistant. The settings to be applied here are described in Section 5 "Installation and
start-up".
4.5 Higher-level control functions
Before the display and setting parameters of the installer level are explained, here is
an overview of the generally applicable controller functions.
4.5.1 Automatic configuration
Once the controller is supplied with power at the eBUS connection, it scans the
eBUS and automatically finds all eBUS components connected. This process is repeated every 10 minutes.
Certain menu levels, parameters and information are only displayed once the rele-
vant accessory items are detected.
If an accessory is detected but cannot be reached after 15 minutes, an error mes-
sage is displayed.
If other components are installed, such as a heat pump or a VR 70, these must be
switched on first and their installation assistants run before switching on the controller.
All eBUS components must be started up and their installation assistants run
first. In order to detect items properly and carry out the resultant presettings,
the eBUS controller must be the last control component to be switched on.
Default setting
Everything
Time programmes
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4.5.2 Sensors
If an outside temperature sensor with DCF receiver is connected to the boiler, the date
and time are set automatically and the outside temperature is displayed.
The temperature sensor integrated in the controller is used for control functions and
temperature display in the controller display. If the controller is fitted in a heat generator, certain displays and functions are deactivated as appropriate.
The standard VR 10 sensors are used as flow sensors and cylinder sensors. The collector temperature is measured using a VR 11.
All sensors (apart from the collector temperature sensor) are continuously monitored
for short circuiting or open circuiting. There is no further logic control.
4.5.3 DCF signal
If the controller receives a remote time signal, the date and time are shown on the display. A prerequisite for this is that the DCF signal is detected twice consecutively without error. If operation is without DCF reception the date and time can be entered manually. A switch-over between summer and winter time can also be activated. This takes
place on the last Sunday in March (the time skips from 01:59 to 03:00) and on the last
Sunday in October (the time skips from 02:59 to 02:00).
4.5.4 Energy manager
The energy manager assesses all the heat requirements and determines the target
flow temperature requirement at the heat generator.
Special requirements such as cylinder charging or chimney sweep mode are also taken into account.
4.5.5 Chimney sweep mode
Chimney sweep mode is activated on the heat generator rather than the controller. The
controller automatically ensures that all heating circuits are operated with the highest
permissible flow temperature (the value set in the installer level under the "Maximum
temperature" menu item).
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4.5.6 Pump blocking protection
Any pump that is not used to 24 hours is activated once a day for 20 seconds.
10:00 – heating circuit
10:01 – DHW circuit
10:02 – circulation circuit
10:03 – solar circuit
10:04 – other circuits
Pumps inside the unit are activated by the unit's electronic circuitry.
4.5.7 Installer level (level 3)
The 3-digit code for the installer level must
be entered in the "Code" display. As the
settings on this level are reserved for the
installer, an access code protects this level
against accidental adjustment.
If the code is no longer available, the controller may be reset to the factory setting.
This sets all parameters back to the factory
setting (including the code).
Service information contains the contact details (name and phone number) of the competent person and the next service date.
The system configuration section of the installer level is logically divided up into the
following sub-sections: System, System diagram config., Additional module, Heat generator 1/2, Heating circuit 1/2/3, Zone 1/2/3, Domestic hot water, Buffer cylinder, Solar
circuit, Solar cylinder 1, Temperature difference 1 and Ventilation. Depending on the
Vaillant accessories used, the scope of the parameters displayed and available for adjustment varies.
Service information
System configuration
System configuration
Screed-drying function
Change code
Installer level
Service information
Enter code
Sensor/actuator test
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4.5.7.1 System
Prompt/setting
Select
Comment
Fault status
No fault, Fault list
If "Fault list" is displayed, the warning can be
found using the "Display" button.
Water pressure
Display in bars
Displays the current heating water pressure.
System status
Standby, Heat. mode,
Cooling, DHW
Shows the current operating mode
Frost protect. delay
0 – 12 h
Delays switching on heating mode; relevant
in Automatic mode with "Eco" or "Set-back"
energy-saving options
OT constant heating
Off, -25 – 10 °C
Control modules
Boiler, VR 70, VR 91
Adr.1, heat pump, …
Shows the components identified at the
eBUS and their software versions
Adaptive heat. curve
No, Yes
Configure heat. circ.
All, Zone1, Zone2,
Zone3 *1
Selects which zone the "Operating mode"
button on the basic display has an effect on
Automatic cooling
No, Yes
Only in conjunction with geoTHERM 3 kW,
aroTHERM and flexoTHERM
Start OT cooling
10 – 30 °C
Source regeneration
No, Yes
Current room air hum.
Display in %
Display only for wall-mounted controllers
Current dew point
Display in °C
Displayed only if "Cooling possible" =
"Yes", "Room temp. mod." = "Temp.
mod." and "Zone assignment" = "VRC
700" or "VR 91" selected
Hybrid manager
triVAI, Biv. point
Only in conjunction with geoTHERM 3 kW,
aroTHERM and flexoTHERM
Bivalence point: Parallel operation with an
additional heat generator is enabled below
the temperature set here.
Alternative point: The heat pump is
switched off below the temperature set here.
Heating bivalence point
-30 – 20 °C
DHW bivalence point
-20 – 20 °C
Alternative point
Off, -20 – 40 °C
T. emergency mode
20 – 80 °C
Auxiliary heater type
Condens., Non cond.,
Electric
Energy supplier
HP off, BH off, HP&BH
off, Heating off, Cooling
off, Heat./Cool. off
Auxiliary heater for
Inactive, Heating, DHW,
DHW+heat.
Buff. cyl. offs.
0 – 15 K
System flow temperature
Display in °C
Only with system diagram 6 - 13
The parameters shown in bold in the first column of the table are adjustable.
*1
: Two zones with VR 70 = 1, 5 / three zones with VR 71
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Frost protection delay
Delays switching on heating mode; relevant in Automatic mode with "Eco" or "Setback" energy-saving options
OT constant heating
Lowest outside temperature, from which continuous heating is activated. The nonprogrammed times are given the target room temperature for the subsequent heating
time.
1st example:
Outside temperature > OT constant heating
2nd example:
Outside temperature < OT constant heating
Example for OT constant heating
DIN EN 12831 Sections 7.3 and 9.2.2 states that supplementary heating can
be decreased when designing the heat generator.
"…Additional heating capacity is, however, not required if the system ensures
that this reduction does not take place on the coldest days…". This is why the
"OT constant heating" function is often requested by planning offices.
Target room
Monday
Tuesday
21 °C
t
Monday
Tuesday
21 °C
t
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Adaptive heating curve
On the multiMATIC 700/2, there is the option to select an adaptive heating curve adjustment. This involves the current heating curve being automatically adapted to the
system requirements. The multiMATIC 700/2 switches off once the desired room temperature has been reached. If the current flow temperature now lies below the target
flow temperature according to the heating curve that is set as standard, this is a sign
that the target flow temperature has been set too high. If this is the case, the steepness
of the heating curve is automatically lowered. On the other hand, the heating curve is
raised if the room temperature has not been reached for a long period of time with the
specified heating curve. The heating curve is adjusted each time a new heating process is under way.
Please note that this function is only available if the controller has been installed
in the living area and the thermostat function has been activated.
4.5.7.2 System diagram configuration
Prompt/setting
Select
Comment
System diagram
1 – 13
See Section 5 for more details
Config.: VR 70 addr. 1
1 – 12
MA VR 70, addr. 1
No funct., Charg.pump,
Circ. pump, Cool.signal,
Leg. pump, HC pump
Only with "Config. VR 70" = 1, 3, 6
Since only setting "3" is currently supported for the VR 71 mixer module, it is
not possible to view or adjust the module's configuration.
4.5.7.3 Additional module
Prompt/setting
Select
Comment
Multi-funct. output2
Circ. pump, Dehumid.,
Zone *1, Leg. pump
Only in conjunction with aroTHERM and
flexoTHERM
Auxiliary heater output
Off, Stage 1, Stage 2,
Stage 3
Only in conjunction with aroTHERM
Multi-funct. input
Not conn., Circ. boost,
PV
Only in conjunction with aroTHERM and
flexoTHERM
For flexoTHERM/ flexoCOMPACT, the "FB" and "0" connections of the "X41" edge
connector are used as a multi-function input; for the aroTHERM VWZ AI, the "ME" terminal is used.
*1
: The setting "Zone" is only supported in conjunction with aroTHERM.
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4.5.7.4 Heat generator 1
Prompt/setting
Select
Comment
Status
Standby, Heat. mode,
Cooling, DHW
Current flow temp.
Display in °C
Displays the flow temperature measured by the
flow temperature sensor inside the unit. If an
external sensor has been fitted, the temperature it is measuring is displayed here.
4.5.7.5 Heat generator 2
Prompt/setting
Select
Comment
Status
Standby, Heat. mode,
Cooling, DHW
Current flow temp.
Display in °C
Displays the flow temperature measured by the
flow temperature sensor inside the unit. If an
external sensor has been fitted, the temperature it is measuring is displayed here.
4.5.7.6 Additional module
Prompt/setting
Select
Comment
Status
Standby, Heat. mode,
Cooling, DHW
Only in conjunction with aroTHERM and
flexoTHERM
4.5.7.7 HEATING CIRCUIT 1 / 2 / 3
Prompt/setting
Select
Comment
Type of circuit
Inactive, Heating,
Fixed value, DHW,
Ret.fl.incr., Pool
Selects the type of circuit
Status
Standby, Heat. mode,
Cooling, DHW
Target flow temp.
Display in °C
Displays the target value for heating circuit
1/2/3
Current temperature
Display in °C
Only for heating circuit 2 and 3, heating
circuit 1 with VR 70 = 3, 5, 12 (mixer circuit)
or VR 71
Excessive temp.
0 – 30 K
Sets the excess temperature for the heat generator
Only for heating circuit 2 and 3, heating
circuit 1 with VR 70 = 3, 5, 12 (mixer circuit)
or VR 71
Max limit outs.temp.
10 – 99 °C
Setting the outside temperature at which heating mode remains permanently switched off
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Prompt/setting
Select
Comment
Heating curve
0.1 - 4.0
System-dependent assignment of the outside
temperature to the target flow temperature.
Minimum temperature
15 – 90 °C
Useful when using radiators
Maximum temperature
15 – 90 °C
Auto Off mode
Eco, Set-back
Operating behaviour of the heating circuits
outside the programmed time periods
Room temp. mod.
None, Temp. mod.,
Thermost.
Factoring in the current room temperature in
order to achieve the target room temperature
Only if the controller is wall-mounted and
zones have been assigned for VRC 700
and/or VR 91
Cooling possible
No, Yes
Dew point monitoring
No, Yes
Displayed only if "Cooling possible" =
"Yes" selected
Min. cool. fl. tgt temp.
7 – 24 °C
End OT cooling
4 – 25 °C
Offset dew point
-10 – 10 K
Displayed only if "Cooling possible" =
"Yes", when "Room temp. mod." = "Temp.
mod." and "Zone assignment" = "VRC 700"
or "VR 91" selected
Status ext. heat dem.
On, Off
Displayed only with the VR 70 = 1, 5
Pump status
On, Off
Displays the status of the pump inside the unit
or the heating circuit pump
Mixer status
Stationary, Closing,
Opening
Displays the mixer movement
Only for heating circuit 2 and 3, heating
circuit 1 with VR 70 = 3, 5, 12 (mixer circuit)
or VR 71
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Type of circuit
Setting the type of circuit has an effect on the parameters displayed for the heating circuits, the zones, and on the VRC 700's control strategy. The following provides an
overview of which parameters are displayed in the system configuration:
Setting
Parameters displayed in the "Heating circuit 1/2/3" sub-menu
Inactive
None
Heating
Status
Cooling possible
Target flow temp.
Room temp. mod.
Current temperature (heating circuit 2 only)
Dew point monitoring
Excessive temp. (heating circuit 2 only)
Min. cool. fl. tgt temp.
Max limit outs.temp.
Cooling start temperature
Heating curve
Offset dew point
Minimum temperature
Status ext. heat dem.
Maximum temperature
Pump status
Auto Off mode
Mixer status (heating circuit 2 only)
Fixed value,
Pool
Status
Maximum temperature
Target flow temp.
Target flow temp.: Day
Current temperature (heating circuit 2 only)
T.fl.temp.: Set-back
Excessive temp. (heating circuit 2 only)
Status ext. heat dem.
Max limit outs.temp.
Pump status
Minimum temperature
Mixer status (heating circuit 2 only)
DHW
Target cylinder temp.
Pump status
Ret.fl.incr.
Target return temp.
Mixer status (heating circuit 2 only)
multiMATIC 700/2
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Excess temperature
Setting an increase in the heat requirement for the heat generator, in order to equalise
temperature losses caused by long pipes or leaking mixers.
Room temp. mod.
Temperature modulation: Integration of the current room temperature for adjusting
the effective target room temperature using the following formula:
T
corr
= T
target
+ (T
target
– T
current
)
T
corr
= adjusted target room temperature (0..30 °C)
T
target
= desired target room temperature
T
current
= measured room temperature
(T
target
– T
current
) – max. 7 K
Example: T
target
= 21 °C (1), T
current
= 19 °C (2)
T
corr
= 21 °C + (21 °C – 19 °C)
T
corr
= 23 °C (3)
Result: The heating curve is translated by a
room temperature of 2 K. This results in an
increase in the flow temperature. This normally
also increases the room temperature.
Adjusting the heating curve using room temperature modulation
Thermostat function: In addition to the "Temperature modulation" function, the fol-
lowing logic applies here: Switching off the heating when the room set target value
+ 3/16 K has been reached. Switching it back on when the room set target value - 2/16
K has been reached.
None: The target room temperature is used as set.
multiMATIC 700/2
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Heating curve
The heating curve and the outside temperature are used as starting points for the basic
control function. Both values ensure the flow temperature necessary for the comfortable heating of the area. The time programme can be adjusted to ensure that heat is
provided at the correct time.
The heat demand in a flat or house is in a certain ratio to the temperature difference
between the outside temperature and target room value. Therefore, the flow temperature required to cover the heat demand (reaching the required room temperature) can
be assigned to each outside temperature value.
This allocation, shown graphically, gives rise to the heating curve. It can vary according
to the climate zone, building type, heating system and individual customer requirements.
An optimum heating curve setting may require several corrections in the course of being determined, if the desired room temperature is not achieved as the outside temperatures vary. To this end the gradient of the heating curve can be adjusted (0.1 to 4.0)
and shifted in parallel.
The modifiable heating curves are shown below:
Recommendation: The heating curve should be selected on the basis of the system
temperature of the heating circuit and the normal outside temperature.
Example: System temperature of the heating circuit: 55/45 °C
Normal outside temperature: 0 °C
Heating curve: 1.5
Flow temperature: 55 °C
Flow temperature
In °C
Outside temperature in
°C
Heating
curves
multiMATIC 700/2
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Auto Off mode
Specifies how the heating circuit reacts outside the programmed time period.
"Set-back" energy-saving option: The temperature is adjusted to the "Set-back temperature" that has been set. This usually reduces the flow temperature outside the programmed time period.
Eco energy-saving option: (default setting)
The heating circuit/boiler is only
switched on with the preset set-back
target value outside the programmed
time periods if an outside temperature
of < 3 °C has been reached and the
preset frost protection delay time has
elapsed.
If the measured room temperature is
lower than the preset set-back temperature, the frost protection is also activated (regardless of the measured outside temperature).
If you set a delay time, the frost protection function will be disabled during this
period.
Function sequence when setting the "Auto
Off mode = Eco" parameter
This function will only work if the "Eco" setting is selected for the "Auto Off mode" function.
4.5.7.8 Zone 1 / 2 / 3
Prompt/setting
Select
Comment
Zone activated
Yes, No
Day temp. heating
5.0 – 30.0 °C
Displayed only if "Zone activated" = "Yes" selected
Set-back temp. heat.
5.0 – 30.0 °C
Room temperature
Display in °C
Zone assignment
Without, VRC 700, VR 91 addr1,
VR 91 addr2, VR 91 addr3
Zone valve status
Open, Closed
*1
: Two zones with VR 70 = 1, 5 / three zones with VR 71
Eco = OFF
Pump = Off; Mixer = Closed
FT
target
= 0 °C
Frost protection delay
Pump = Off; Mixer = Closed
FT
target
= 0 °C
OT ≥ 4 °C
Eco mode
Pump = On; Mixer = Active
RT
target
= Set-back target value
OT ≤ 3 °C: Start timer
Timer finished
OT ≥ 4 °C
multiMATIC 700/2
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Zone assignment
No.
Configuration
Setting in installer level
1
VRC 700 in the unit
Room temp. mod.: None
Zone assignment: Without
2
VRC 700 in the room
Room temp. mod.: Temp. mod. or Thermost. possible
Zone assignment: VRC700
3
VRC 700 in room 1, VR 91 in room 2, two
heating circuits, VR 70
Room temp. mod.: Temp. mod. or Thermost. possible
Zone assignment zone 1: VRC700 (room 1)
Zone assignment zone 2: VR 91 addr1 (room 2)
4
VRC 700 in room 1, VR 91 in room 2, VR
91 in room 3, three heating circuits, VR 71
Room temp. mod.: Temp. mod. or Thermost. possible
Zone assignment zone 1: VRC700 (room 1)
Zone assignment zone 2: VR 91 addr1 (room 2)
Zone assignment zone 3: VR 91 addr2 (room 3)
Zones must be assigned for configurations 2 – 4. If there is more than one zone in the
system (no. 3 and 4), VRC 700 and VR 91 can be assigned to any zone.
4.5.7.9 Domestic hot water
Prompt/setting
Select
Comment
Cylinder
Inactive, Active
Target flow temp.
Display in °C
Domestic hot water
35 – 70 °C
Current cyl. temp.
Display in °C
Cylinder charging pump
On, Off
Displayed with diagram = 2, with VR 70 =
3, 5, 6, with VR 71 = 3 or in conjunction
aroTHERM and flexoTHERM
Circulation pump
On, Off
Anti-legionella day
Off, Mo, Tu, We, Th, Fr,
Sa, Su, Mo - Su
Anti-legionella time
00:00 – 24:00
Sets the start time for the anti-legionella function in 10-minute increments.
Cylinder boost hysteresis
5.0 – 20.0 K
Only in conjunction with aroTHERM and
flexoTHERM
Cylinder boost offset
0 – 40 K
Displayed with diagram = 2, displayed with
VR 70 = 3, 5, 6, or in conjunction with
aroTHERM and flexoTHERM
Max. cyl. charg. time
Off, 20 – 120 min
DHW req. anti-cy time
0 – 120 min
multiMATIC 700/2
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Prompt/setting
Select
Comment
Charging pump overrun
time
0 – 10 min
Displayed with diagram = 2, displayed with
VR 70 = 3, 5, 6, or in conjunction with
aroTHERM and flexoTHERM
Parallel cyl. charging
OFF, ON
Cylinder charging
The function is started when, in the charging release time, the cylinder value falls below the target value by more than 5 K. If parallel cylinder charging has been programmed, the mixer circuit in the VR 70 remains in operation. The cylinder charging
ends when the preset target cylinder value has been reached. The target cylinder value therefore corresponds to the cylinder charging switch-off temperature.
Cylinder charging if the cylinder is downstream of the low loss header
The cylinder temperature sensor is connected to the VR 70. The VR 70 takes the "Target cylinder temperature" set on the VRC 700, adds the value saved under "Cylinder
boost offset" and uses this total to generate the "Target flow temperature for cylinder
charging" value. If the current temperature of the cylinder is 5 K or more below the target value, the VR 70 activates the charging pump. The value calculated as the "Target
flow temperature for cylinder charging" is now assigned to "Forced Mode" on the boiler.
The controller sets the boiler to "Cylinder charging mode", sets the target flow temperature, switches the diverter valve inside the boiler (if installed) to the "Heating" position
and switches on the integrated heating pump. The boiler now adjusts the desired flow
temperature for as long as "Forced Mode" remains active. Once the target cylinder
temperature has been reached, "Forced Mode" stops, the unit goes back to Normal
operating mode and the charging pump that was activated by the VR 70 switches off
once the time set under "Charging pump overrun time" has elapsed.
Anti-legionella function
With this function activated, the cylinder and the connected hot water pipes are heated
to a temperature of 70 °C once a day or once a week. To this end the cylinder target
value is raised to 70 °C and the circulation pump switched on.
The function is stopped when the cylinder temperature sensor measures a temperature
greater than 60 °C for longer than 60 minutes or once 120 minutes have elapsed (to
prevent the system from "getting stuck" in this function if water is drawn at the same
time).
multiMATIC 700/2
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Default setting: No anti-legionella function (owing to risk of scalding).
If the "Days away from home" function is activated, the anti-legionella function will not
run. Once the "Days away from home" function has ended, the anti-legionella function
will run once at 00:00.
Example:
The anti-legionella function is enabled for every Tuesday at 08:00.
If the holiday programme finishes on Sunday at 24:00, the first anti-legionella function
will run on Monday at 00:00. The anti-legionella function will next run on Tuesday at
08:00.
Cylinder charging offset
The target temperature for cylinder charging is derived from the desired cylinder temperature and the offset, to be set here.
Example: Target cylinder temperature = 60 °C
Cylinder charging offset = 15 K
Set target temperature for cylinder charging = 75 °C
Charging pump overrun time
After switching off the unit at the end of cylinder charging, the cylinder charging pump
overrun time begins. During this time no heat request is sent to the heat generator. All
other functions (actuation of charging pump) continue during this time. This function
enables the high flow temperature required for cylinder charging to continue to be delivered to the cylinder before the heating circuits, in particular the burner circuit, are
enabled again for heating.
Parallel cylinder charging
During cylinder charging, the mixer circuits are supplied and the burner circuit pump is
switched off to prevent excessive flow temperatures in the unregulated heating circuit.
With "Parallel cylinder charging – Off", the system operates with cylinder priority
switching. During the cylinder charging all other heat consumers are closed off.
multiMATIC 700/2
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4.5.7.10 Basic buffer cylinder management
The VR 70 = 1 or VR 71 setting allows basic buffer cylinder management to be run with
up to two temperature sensors (top, bottom). This can be used with both temperature
sensors, for example for installations in which the heat generator requires a buffer cylinder for running-time optimisation, such as for heat pumps. Another example of use is
for systems in which, for example, only one solid fuel boiler (even a non-Vaillant unit)
and the buffer cylinder manager are used to store heat energy in order to avoid having
to activate the fossil fuel boiler.
Buffer cylinder management only works with system diagrams 1 and 8 – 13.
Prompt/setting
Select
Comment
Cyl. temp.: Top
Display in °C
Displayed with VR 70 = 1, VR 71 and system diagram = 1 and 8 – 13
Cyl. temp.: Bottom
Display in °C
4.5.7.11 Buffer cylinder (VR 70 = 3)
The VR 70 = 3 setting allows a basic allSTOR system to be controlled so that it functions in the same way as the part of the allSTOR that assists heating as described previously under "Basic buffer cylinder management". The following parameters are
displayed:
Prompt/setting
Select
Comment
DHW temp. sensor, top
Display in °C
Display if VR 70 = 3
DHW tmp. sensor, bot.
Display in °C
Heat. temp. sens., top
Display in °C
Heat. temp. sens., bot.
Display in °C
Max.DHW fl.targ.temp.
60 – 80 °C
multiMATIC 700/2
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4.5.7.12 Solar circuit (VR 70 = 6, 12)
Prompt/setting
Select
Comment
Collector temperature
Display in °C
Solar pump status
On, Off
Solar pump runtime
Value in h
Reset runtime
No, Yes
Resets the solar circuit pump operating hours
Solar yield sensor
Display in °C
Solar flow volume
Auto, 0.1 – 165.0 l/min
The flow rate of the solar fluid is entered in
l/min under "flow volume". This value corresponds to the setting on the flow volume limiter of the solar pump unit. The PWM signal is
used to determine the volume flow for the
new VMS 70 solar pump unit; "Auto" must be
set.
Solar pump boost
On, Off
The solar pump is switched on for 15 seconds once the collector temperature at the
collector temperature sensor has risen by 2 K
due to solar radiation.
Solar circuit prot.
110 – 150 °C
If the temperature at the collector temperature sensor exceeds the adjustable solar
circuit protection temperature, the collector
pump remains switched off.
Min. collector temp
0 – 99 °C
Purging time
0 – 600 min
Current flow rate
Display in l/min
Basic function
Solar function
The solar function is always active. It is only switched off in the "System off" operating
mode.
The "Collector temperature" and "Cyl. temp.: Bottom" sensors are constantly tested. As
soon as the difference between these two values exceeds the switch-on differential,
the solar pump is switched on. If the difference falls below the switch-off differential,
the solar pump is switched off again.
Solar pump boost: The position of the collector sensor is not ideal for the tube collector in particular (because it is fitted in the cylinder dry pocket outside the distributor).
multiMATIC 700/2
Notes
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The solar pump boost/tube collector function
optimises measuring of the tube collector
temperature and charging/switching when
two cylinders are used.
When the "solar pump boost" function is activated, the solar pump is operated in cycles in
order to measure the real collector temperature and switch the solar pump back on at the
right time.
Solar pump boost is only active if:
● the function is switched on,
● the collector field is not in stagnation,
● the maximum cylinder temperature has
not been reached.
If the solar pump is switched off (switch-off
hysteresis reached), the current collector
temperature is saved.
The solar pump is switched on for 15 seconds once the collector temperature at the collector temperature sensor has risen by 2
K due to solar radiation.
If the switch-on differential is reached after 15 seconds, the solar pump goes into regular operation again.
If the switch-on temperature difference is not reached, the current collector temperature is saved as a reference value. Pump boost is carried out again when the measured collector temperature has risen by 2 K again.
Solar circuit protection function
If the solar heat available exceeds the current heat demand – e.g. all cylinders are
heated to the maximum cylinder temperature – the solar pump is switched off permanently. The temperature in the collectors increases quickly and there is a steam bubble
build-up in the system (stagnation).
This stagnation may also arise during operation if:
the system is run with very high cylinder temperatures, > 70 °C and
Solar pump
switches OFF
Save collector sensor
temperature as refer-
ence value
Falls
Solar pump
switches ON
Increases > 2 K over reference
Constantly test
collector sensor
temperature
No
ΔT collector
cylinder ≥
switch-on hyste-
resis for pump?
Yes
ΔT ≤ Switch-off
hysteresis
Start solar pump boost:
Solar pump ON for 15 s
multiMATIC 700/2
Notes
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the collector sensor is fitted in the immersion sleeve outside the collector
and the static pressure of the solar system is set relatively low.
In these operating phases the start-up of the solar circuit pump must be securely prevented, as otherwise there could be pressure shocks in the system. Damage to the
solar circuit pump from excessive temperatures from the collectors is prevented. Also,
in many cases it is not possible for the pump to ensure the necessary circulation of the
solar fluid if a steam buffer is present.
Functional description:
If the temperature at the collector sensor exceeds the adjustable solar circuit protection
temperature, the collector pump remains switched off. If solar circuit protection is active, this is shown on the controller's display as "Solar protection" (status info).
Only once the temperature has fallen below the solar circuit protection hysteresis (30K)
is the pump switch-on block removed and the usual switch-on conditions apply to restart the collector pump.
4.5.7.13 Solar cylinder 1 (VR 70 = 6, 12)
Prompt/setting
Select
Comment
Switch-on differential
2 – 25 K
Switch-off differential
1 – 20 K
Maximum temperature
0 – 99 °C
Cyl. temp.: Bottom
Display in °C
Maximum temperature
A maximum limit for the solar cylinder temperature can be set to not only ensure maximum yield from the solar cylinder heating but also provide protection against scalding
and scaling. When the preset maximum temperature is exceeded, the collector pump
is switched off. Solar charging is only enabled again when the temperature at the sensor falls below the following value: 0.1 * maximum temperature – 1 K, but at least
1.5 K. (Example: Maximum temperature = 80 °C => 0.1 * 80 K – 1 K = 7 K). The cylin-
der frost protection function is not affected. The frost protection function is enabled
when the cylinder temperature falls below 10 °C. The cylinder is then heated to
15 °C. In the "Off" operating mode, "> 10 °C" is shown on the display as the target value.
multiMATIC 700/2
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4.5.7.14 Temperature difference 1 (VR 70 = 12)
Prompt/setting
Select
Comment
Switch-on differential
2 – 25 K
Switch-off differential
1 – 20 K
Maximum temperature
0 – 99 °C
Minimum temperature
0 – 99 °C
TD1 sensor
Display in °C
TD2 sensor
Display in °C
TD output
OFF, ON
These parameters can be used to achieve independent ΔT control.
4.5.7.15 Ventilation
Prompt/setting
Select
Comment
Air quality sensor 1
Display in ppm
Only in conjunction with recoVAIR .../4
Air quality sensor 2
Display in ppm
Max. air quality sensor
800 – 2000 ppm
During the actuator test, actuators for the connected module (such as pumps or mixers) can be activated in sequence. The values measured by the sensors can also be
read.
Prompt/setting
Select
Comment
VR 70 addr1, VR 71
Actuators
R1, R2, R3, R4, R5, R6,
R7, R8, R9, R10, R11, R12
Switches the outputs
(R7 – R12 with the VR 71 only)
Sensor
S1, S2, S3, S4, S5, S6, S7,
S8, S9, S10, S11
Displayed in °C
(S7 – S11 with the VR 71 only)
Sensor/actuator test
multiMATIC 700/2
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The screed-drying function is used to "heat dry" newly laid heating screed in line with
regulations.
This function is available for all heating circuits.
The flow temperature is adjusted independently of the outside temperature as
shown in the following table:
Day after starting the func-
tion
Target flow temperature for this day
1
25 °C
2
30 °C
3
35 °C
4
40 °C
5
45 °C
6 - 12
45 °C
13
40 °C
14
35 °C
15
30 °C
16
25 °C
17 - 23
10 °C
(frost protection function, pump in operation)
24
30 °C
25
35 °C
26
40 °C
27
45 °C
28
35 °C
29
25 °C
The display shows the operating mode with the current day and target flow temperature. The current day can be set manually. When the function is started, the current
time of the start is saved. The day is changed exactly at this time. After the mains is
switched off/on, screed-drying starts with the last active day.
Screed-drying function
multiMATIC 700/2
Notes
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4.5.8 Summary of level structure
Installer level
Information
Desired temperatures
Time programmes
Days away from home
scheduling
Days at home scheduling
Basic settings
Level 2:
Simple
controller configuration
Level 3
Level 1:
Setting the
desired temperature
Ventilation boost
Cylinder boost *5
System OFF active
Heating*1
Hot water
*4, *5
Manual cooling *6
1 day at home
1 day away from
Party function
*1)
Off, Auto, Day, Set-back
*2)
Off, Auto, Day
*3)
Auto, Day, Set-back
*4)
Off, Auto, Day
Cooling
*2, *6
Ventilation
*3
Ventilation stage
*6
= Displayed if "Cooling possible" = "Yes" is selected in the system configuration
= Displayed in conjunction with recoVAIR .../4
*5
= Displayed if "Cylinder" = "active" is selected in the system configuration
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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= Press the selection but-
Level 2:
Basic controller
configuration
Menu
System status
Contact details
Serial number
Information
Fault status
Water pressure
System status
ZONE 1/2
*1, *5
Environmental yield
Environmental yield
Reset env.yield
Solar yield
Collector temperature
Solar yield
Reset solar yield.
Current room air hum.
High tariff
Noise reduction mode
1
Time programmes
triVAI *2
Set-back temp. heat.
DHW circuit *4
ZONE 1/2/3: Cooling
*1, *3, *5
ZONE 1/2/3 *1
Desired temperatures *5
ZONE 1/2/3
*1, *5
DHW circuit *4
Circulation *4
Day temp. heating
Day temp. cooling *3
Ventilation
Ventilation stage
Max. vent. stage: Day
Max. vent. stge: Night
Ventilation
Heat recovery
*2
Displayed if "Hybrid man-
ager" = "triVAI" is selected
Consumption
*3
Displayed if "Cooling
possible" = "Yes" is selected
Fuel consumption *7
*4
Displayed if "Cylinder" =
"active" is selected
*5
Displayed if "Zone activat-
ed" = "Yes" is selected
Curr. dew point
*3, *6
*6
Displayed if "Room temp.
mod." = "Temp. mod." and
"Zone assignment" =
"VRC 700" or "VR 91"
*7
Not displayed for
flexoTHERM, VR 71
Electrical consumption *8
*8
Also displayed for ecoTEC
exclusive, VR 71
= In conjunction with geoTHERM 3 kW, aroTHERM, flexoTHERM
*1 =
Two zones with VR 70 = 1, 5 / three zones with VR 71
= Displayed for VR 70 = 6, 12
= In conjunction with recoVAIR .../4
= In conjunction with ecoTEC exclusive, flexoTHERM, VR 71
multiMATIC 700/2
Notes
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Days away from home
scheduling
Days at home scheduling
Basic settings
Language
Date/time
Display
Display contrast
Room temperature
Outside temperature
ZONE 1/2/3 *1
ZONE 1/2/3 *1
Installer level
Operating mode *2
Time programmes
Everything
Enter zone name *2
Default setting
= Press the selection
Level 2:
Simple controller
configuration
1
Offset
Costs
Auxiliary heater
Low-tariff elec. rate
High-tariff elec. rate
Max. room air humidity
Preferred display
*3
Ventilation
Heat recovery
Button lock
*3
Displayed in conjunction
with heat pump and/or
recoVAIR …/4
= In conjunction with geoTHERM 3 kW, aroTHERM, flexoTHERM
and if "Hybrid manager" = "triVAI" is selected in the system configuration
= In conjunction with recoVAIR .../4
*1
= Two zones with VR 70 = 1, 5 / three zones with VR 71
*
2
= Displayed if "Zone activated" = "Yes"
multiMATIC 700/2
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Target flow temp.
Service information
Enter contact details
Service date
Enter code
Installer level
System configuration
Screed-drying function
Change code
Sensor/actuator test
Fault status
Water pressure
Frost protect. delay
OT constant heating
Control modules
Configure heat. circ.
Status
Current flow temp.
System
Type of circuit
Day temp. heating
Set-back temp. heat.
Pump status
Room temp. mod.
Max limit outs.temp.
Heating curve
Auto Off mode
Heat generator 2
Mixer status
HEATING CIRCUIT 1/2/3
*1
System status
000
Level 3: Installer level
Adaptive heat. curve
Heat generator 1
Status
Current flow temp.
Cooling possible
End OT cooling
Min. cool. fl. tgt temp.
1
Current room air hum.
Multi-funct. output 2
*7
Additional module *7
System diagram
Aux. heater output
Room temperature
System diagram config.
Config.: VR 70 addr. 1
MA VR 70, addr. 1
*2
Status
Excessive temp.
Maximum temperature
Minimum temperature
Dew point monitoring
*9
Status ext. heat dem. *6
ZONE 1/2/3
*1
Zone activated
Zone assignment
Zone valve status
Displayed if "Zone activated"
= "Yes" is selected
System flow temp.
*2
Automatic cooling
Source regeneration
Hybrid manager
DHW bivalence point
*7
Heat. bivalence point *4
Alternative point
*4
T. emergency mode
Auxiliary heater type
*5
Energy supplier
*7
Auxiliary heater for
*7
*4
Displayed if "Hybrid man-
ager" = "Bivalence point" is
selected
*5
Displayed if "Hybrid man-
ager" = "triVAI" is selected
*6
Displayed with VR 70 = 1, 2,
5
*7
Displayed in conjunction with
aroTHERM, flexoTHERM
*9
Displayed if "Room temp.
mod" = "Temp. mod.“ and
"Zone assignment" = "VRC
700" or "VR 91"
Offset dew point
*9
Current temperature
Current dew point
*8
Status
*7, *8
Additional module
*7, *8
*8
Only displayed if a second
heat generator is not con-
nected
Multi-funct. input
*7
Start OT cooling
Buff. cyl. offs.
= Displayed in conjunction with geoTHERM 3 kW, aroTHERM, flexoTHERM
= Displayed for heating circuit 2 and 3 or for heating circuit 1 with VR 70 = 3, 5, 12
= Displayed in conjunction with aroTHERM
*2
: = Displayed with VR 70 = 1, 3, 6
*1
: Two with VR 70 = 1, 5 / three with VR 71
= Displayed in conjunction with VR 70
Displayed if "Cooling possi-
ble" = "Yes" is selected
multiMATIC 700/2
Notes
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Solar circuit 1
Collector temperature
Reset runtime
Solar yield sensor
Solar flow volume
Solar circuit prot.
Min. collector temp
Solar pump boost
Current flow rate
Purging time
Maximum temperature
Switch-on differential
Solar cylinder 1
Switch-off differential
Temperature difference 1
Switch-on differential
Switch-off differential
Solar pump status
Solar pump runtime
Level 3: Installer level
Ventilation
Air quality sensor 1
Air quality sensor 2
Max. air qual. sensor
Cylinder
Hot water
*2
Current cyl. temp.
*2
Anti-legionella day
*2
Anti-legionella time
*2
Cylinder boost offset
*1, *2
Circulation pump
*2
Domestic hot water
Parallel cyl. charging
Max. cyl. charg. time.
*1, *2
DHW req. anti-cy time
*1, *2
1
Ch. pump overrun time
*1, *2
Cylinder charging pump
*1, *2
Cyl. temp.: Bottom
Minimum temperature
TD1 sensor
Maximum temperature
TD2 sensor
TD output
Cyl. boost hysteresis
Target flow temp.
Buffer cylinder
DHW temp. sensor, top
Heat. temp. sens., bot.
DHW tmp. sensor, bot.
Heat. temp. sens., top
Max.DHW fl.targ.temp.
*2
Displayed if "Cylinder" =
"active" is selected
Buffer cylinder
*3
Cyl. temp.: Top
*3
Cyl. temp.: Bottom
*3
*3
Displayed with VR 70 = 1,
VR 71 and system diagram
= 1 and 8 – 13
= Displayed with VR 70 = 12
= Displayed for VR 70 = 6, 12
= Displayed in conjunction with recoVAIR .../4
*1
= Displayed with system diagram = 2, displayed with VR 70 = 3, 5, 6
= Displayed with VR 70 = 3
= Displayed in conjunction with aroTHERM, flexoTHERM
multiMATIC 700/2
Notes
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5 Installation, start-up
As a general principle, the instructions and information – in particular safety instructions – from the relevant installation instructions must be observed.
5.1 Installation
5.1.1 Installing the controller in the unit electronics box
First check the switch cabinet type:
Old type of electronics box:
ecoTEC plus unit electronics box with multiMATIC 700/2
Installation:
● Insert the short ends of the three-pin plug con-
nector (2) included with the controller into the three
horizontal openings on the controller's PCB (1).
● Carefully push the controller with the plug con-
nector into the plug-in connection on the electronics
box.
Rear view of multiMATIC 700/2
Installing the controller in the unit electronics box is not permitted for systems with the
geoTHERM 3 kW heat pump.
multiMATIC 700/2
Notes
10/2015 86 Training 0020228700_00
Integrating multiMATIC 700/2 into the current unit electronics box:
Schematic diagram showing the built-in multiMATIC 700/2 controller
On electronics boxes with vertical plug-in connections and five pins, the blanking cover
is removed and then, once the three-pin header has been removed from the controller,
the controller is carefully plugged into the slot provided.
5.1.2 Wall-mounting the controller
Before the controller can be installed in the living
area, it must be separated from the wall-mounting
base. The wall-mounting base is then fitted to the
wall.
After installing the wall-mounting base, the eBUS
line must be connected to the two terminals on the
pin header (5).
Key
5 Controller
6 Wall-mounting base
7 Mounting openings
8 Openings for cable duct
9 Pin header with terminals for the eBUS line
10 Wall-mounting base strip
11 Slot for screwdriver
Auto
13.5 °C
11:54
Desired heating temp. 23.0 °C
Menu
Op. mode
multiMATIC 700/2
Notes
10/2015 87 Training 0020228700_00
5.1.3 Installing and connecting the VR 70 module
The VR 70 accessory may be required depending on the design of the heating installation. It is installed close to the components in the installation using the fastening material provided.
5.1.3.1 Terminal assignment for the VR 70 module
VR 70 printed circuit board
On contact "S7", "I" stands for Input and "O" for Output.
On outputs "R3/R4" and "R5/R6", "1" stands for Open and "2" for Closed.
The VR 70 configuration must be set in the controller's installer level (menu
item "Config.: VR 70 addr. 1") and not on the module's address switch.
multiMATIC 700/2
Notes
10/2015 88 Training 0020228700_00
Overview of VR 70 configurations (1 – 12)
VR 70
con-
figura-
tion*1
Assignment of the actuator outputs
Assignment of the sensor inputs
R1
R2
R3
R4
R5
R6
S1
S2
S3
S4
S5
S 6
S7
1
HC1P
HC2P
MA
-
HC2op
HC2cl
DHW1/
BufBt
DEM1
DEM
2
-
Sys-
Flow
/Buf
Top
FS2 - 3
MA
HC2P
LP/3WV
-
HC2op
HC2cl
Buf
TopDHW
Buf
BtDH
W
Buf
BtC
H
Sys-
Flow
Buf
TopCH
FS2 - 5
HC1P
HC2P
HC1op
HC1cl
HC2op
HC2cl
Sys
Flow
DEM1
DEM
2
-
FS1
FS2 - 6
COLP
LegP
MA - ZV1 - DHW1
DHWBt
-
Sys-
Flow
COL
Solar
yield
PWM
12
COLP
HC1P
TDO
3WV
HC1op
HC1cl
Solar
yield
BufBt
TD1
TD2
COL
FS1
PWM
Key
HC1P
Heating pump for heating circuit 1
Buf
Top
Top cylinder sensor for the buffer cylinder
HC1cl
Close mixer for heating circuit 1
BufBt
Bottom cylinder temperature sensor for the buffer cylinder
HC1op
Open mixer for heating circuit 1
Buf
TopDHW
Top cylinder temperature sensor for DHW section of allSTOR
buffer cylinder
DEM1
External heating switch-off for heating circuit 1
Buf
BtDHW
Bottom cylinder temperature sensor for DHW section of allSTOR buffer cylinder
FS1
Flow temperature sensor for heating circuit 1
Buf
TopCH
Top cylinder temperature sensor for heating section of allSTOR
buffer cylinder
HC2P
Heating pump for heating circuit 2
Buf
BtCH
Bottom cylinder temperature sensor for heating section of
allSTOR buffer cylinder
HC2cl
Close mixer for heating circuit 2
TD1
First temperature sensor for ΔT control
HC2op
Open mixer for heating circuit 2
TD2
Second temperature sensor for ΔT control
DEM2
External heating switch-off for heating circuit 2
TDO
Output for an actuator for ΔT control
FS2
Flow temperature sensor for heating circuit 2
LP/3WV
Charging pump or three-way valve switch to DHW cylinder
MA
Multi-function output
COLP
Collector pump
DHW1
Cylinder temperature sensor
COL
Collector temperature sensor
DHWBt
Bottom cylinder temperature sensor for DHW
cylinder
LegP
Legionella protection pump
Sys
Flow
System flow temperature (low loss header)
Solar yield
Solar yield sensor
ZV1
Zone valve for zone 1
PWM
PWM actual value input and target value output of PWM pump
(only in conjunction with VMS 70 solar pump unit)
R3/R4, R5/R6: Mixer outputs -> only one of the outputs (1 or 2) can be
switched. It is not possible to switch both outputs at once.
A VR 11 sensor must be used for the "COL" sensor; a VR 10 sensor must be
used for all other sensors.
Closing the "DEM" contact ends the heating demand for the relevant heating
circuit.
*1
: VR 70 configurations 2, 4, 7, 8, 9, 10 and 11 are currently not supported.
Two VR 10 sensors are included in the scope of delivery for the VR 70.
multiMATIC 700/2
Notes
10/2015 89 Training 0020228700_00
5.1.4 Installing and connecting the VR 71 module
The VR 71 accessory may be required depending on the design of the heating installation. It is installed close to the components in the installation using the fastening material provided.
5.1.4.1 Terminal assignment for the VR 71 module
VR 71 printed circuit board
On contacts "S12" and "S13", "I" stands for Input and "O" for Output.
On outputs "R7/8", "R9/10" and "R11/12", "1" stands for Open and "2" for
Closed.
Since the VR 71 is used as a source of power for the eBUS, it is necessary to
ensure that the polarity for the eBUS connection between the heat generator
and VR 71 is correct ("+" at "+" and "-" at "-").
multiMATIC 700/2
Notes
10/2015 90 Training 0020228700_00
Overview of VR 71 configuration
Assignment of the sensor inputs
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
Sys
Flow
/
Buf
Top
FS1
FS2
FS3
BufBt
DEM1
DEM2
DEM3
DHW1 - - - -
Assignment of the actuator outputs
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
HC1P
HC2P
HC3P
MA
-
LP/3WV
HC1op
HC1cl
HC2op
HC2cl
HC3op
HC3cl
Key
HC1P
Heating pump for heating circuit 1
HC3cl
Close mixer for heating circuit 3
HC1cl
Close mixer for heating circuit 1
HC3op
Open mixer for heating circuit 3
HC1op
Open mixer for heating circuit 1
DEM3
External heating switch-off for heating circuit 3
DEM1
External heating switch-off for heating circuit 1
FS3
Flow temperature sensor for heating circuit 3
FS1
Flow temperature sensor for heating circuit 1
MA
Multi-function output
HC2P
Heating pump for heating circuit 2
DHW1
Cylinder temperature sensor
HC2cl
Close mixer for heating circuit 2
Sys
Flow
System flow temperature (low loss header)
HC2op
Open mixer for heating circuit 2
Buf
Top
Top cylinder sensor for the buffer cylinder
DEM2
External heating switch-off for heating circuit 2
BufBt
Bottom cylinder temperature sensor for the buffer cylinder
FS2
Flow temperature sensor for heating circuit 2
LP/3WV
Charging pump or three-way valve switch to DHW cylinder
HC3P
Heating pump for heating circuit 3
R7/8, R9/10, R11/12: Mixer outputs -> only one of the outputs (1 or 2) can be
switched. It is not possible to switch both outputs at once.
VR 10 sensors must be used for all sensors.
Closing the "DEM" contact ends the heating demand for the relevant heating
circuit.
Four VR 10 sensors are included in the scope of delivery for the VR 71.
multiMATIC 700/2
Notes
10/2015 91 Training 0020228700_00
5.2 Start-up
*
Confirming with "OK" opens the "Installer level > System configuration" menu. The
installation assistant has finished and the rest of the installation-specific parameters
must now be set here.
The installation assistant will launch automatically when the controller is started for the
first time following installation of electrical wiring or following replacement.
The range of setting options available in the "System configuration" menu depends on
the system components detected, the configuration set for the VR 70 and the VR 71
and the system diagram that has been set.
5.2.1 Settings in the Installation assistant
Prompt
Select
Comment
Language
DE, GB, FR, IT, DK, NL, ES,
TR, HU, RU, UA, EE, LV, LT,
SE, NO, PL, CZ, HR, SK, RO,
SI
System diagram
1 – 13
System diagrams 3, 4, and 5 are currently
not supported.
VR 70 1 config.
1 – 12
VR 70 configurations 2, 4, 7, 8, 9, 10 and 11
are currently not supported.
System configuration
Since only setting "3" is currently supported for the VR 71 mixer module, it is
not possible to view or adjust the module's configuration.
Installation assistant
System diagram
Language
System configuration *
VR 70 1 Adr. 1 config.
multiMATIC 700/2
Notes
10/2015 92 Training 0020228700_00
5.2.2 Settings matrix: System diagram and configuration for the VR 70, VR 71
System diagram *1
No
VR 70
Configuration
for the VR 70 *2
VR 71
1 3 5 6 12
2 heating
circuits
allSTOR
2 mixed
circuits
Solar hot
water gen-
eration
Solar
heating
support
3 mixed cir-
cuits
1 direct
heating
circuit
1 direct and
1 mixed
heating
circuit
1 direct and
1 mixed
heating
circuit
2 mixed
heating
circuits
1 direct
heating
circuit
1 mixed
heating
circuit
3 mixed heat-
ing circuits
1
System with boiler: DHW
regulation by boiler (except
in solar systems)
2
System with boiler: DHW
regulation by VRC 700
6
3 kW hybrid system (alternative mode of operation):
DHW only by boiler
7
3 kW hybrid system (parallel
operation with 2 circuits/zones): DHW only by
boiler
8
Mono-energy HP system,
AH requires HP (DHW by
HP and AH)
Simple hybrid system, AH
does not require HP (DHW
by boiler only)
9
Simple hybrid system, AH
does not require HP, DHW
by boiler only
10
HP system with heat
exchanger, AH requires
heat exchanger pump,
mono-energy (DHW only by
HP)
11
Mono-energy HP system
with heat exchanger, AH
requires HP (DHW by HP
and AH)
12
Complete hybrid system, AH
does not require HP, DHW
by HP and boiler
13
Complete hybrid system
with heat exchanger, AH
does not require HP, DHW
by HP and boiler
*1
: System diagrams 3, 4 and 5 are currently not supported.
*2
: VR 70 configurations 2, 4, 7, 8, 9, 10 and 11 are currently not supported.
multiMATIC 700/2
Notes
10/2015 93 Training 0020228700_00
In the event that a combination of "System diagram" and "VR 70 configuration" is selected that is not permitted, the fault message "System diagram selection incorrect"
or "VR 70 configuration incorrect" is displayed on the controller.
If a combination of "System diagram" and "VR 71 configuration" is selected that is not
permitted, the fault message "System diagram selection incorrect" is displayed on
the controller.
Assignment of system diagrams to heat generators
System diagram
Heat generator
1, 2
Conventional heat generator
6, 7
geoTHERM 3 kW Hybrid heat pump
8, 9, 12
flexoTHERM heat pump
8, 9, 10, 11, 12, 13
aroTHERM heat pump
5.2.3 Settings and displays/indicators on the VR 91
Front view of the VR 91
The VR 91 remote control unit is a wire-bound remote control unit for one zone in
combination with the VRC 700 controller. It communicates with the boiler exclusively
via eBUS.
Only one VR 91 can be used in conjunction with VR 70.
Up to two VR 91 can be used in conjunction with VR 71.
Auto
13.5 °C
11:54
23.0 °C
Desired heating temp. 23.0 °C
Menu
Op. mode
multiMATIC 700/2
Notes
10/2015 94 Training 0020228700_00
Menu tree for VR 91 remote control unit
Installer level
Information
Desired temperatures
Days away from home
scheduling
Days at home scheduling
Basic settings
Level 2:
Simple
controller configuration
Level 3
Level 1:
Setting the
desired temperature
Ventilation boost
Heating*1
1 day away from home
1 day at home
Party function
*1)
Off, Auto, Day, Set-back
*2)
Off, Auto, Day
Cooling
*2, 3
Time programmes
*3
= Displayed only if "Cooling possible" = "Yes" selected in the VRC 700
Auto
13.5 °C
11:54
23.0 °C
Desired heating temp. 23.0 °C
Menu
Op. mode
multiMATIC 700/2
Notes
10/2015 95 Training 0020228700_00
= Press the selection
button
Menu
System status
Contact details
Serial number
Information
Fault status
ZONE 1/2/3 *1
Current room air hum.
Time programmes
Set-back temp. heat.
ZONE 1/2/3: Cooling
*1, °2
ZONE 1/2/3 *1
Desired temperatures
ZONE 1/2/3 *1
Day temp. heating
Day temp. cooling *2
Current dew point
Days away from home
Days at home schedul-
Basic settings
Language
Display
Display contrast
Room temperature
ZONE 1/2/3
*1
Enter zone name
Offset
Preferred display
Button lock
Enter code
Installer level
System configuration
Fault status
Control modules
000
Remote control address
*1
= Depending on the zone assignment in the VRC 700
*2
= Displayed only if "Cooling possible" = "Yes" selected in the VRC 700
multiMATIC 700/2
Notes
10/2015 96 Training 0020228700_00
Prompt
Select
Comment
Language
DE, GB, FR, IT, DK, NL, ES, TR, HU, RU,
UA, EE, LV, LT, SE, NO, PL, CZ, HR, SK,
RO, SI, KR
Remote control address
1 – 8
Exit installation assistant?
Installation assistant
Remote control address
Language
Exit installation assistant?
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