Vaillant VRC 700 User manual

UK VRC 700 Boiler
Schematics and
installation guide
Domestic Boiler Range
Controls: VRC 700, VR 70, VR 71, VR 91
The Vaillant VRC 700 Boiler Schematic contains documentation to assist in the installation
and commissioning of your boiler system. These documents should be used alongside the
relevant manuals for the equipment supplied.
Please read the contents very carefully for a successful installation.
Table of Contents
Gurantee information / Wiring check list / General Notes......................................................................... 2
Terms and conditions for Vaillant schematic diagrams.............................................................................. 2
Schematic Diagrams / System Conguration Relevant Settings ............................................................ 3
VRC 700 Commissioning / Conguration..................................................................................................... 40
Schematics Legend............................................................................................................................................. 43

2
Guarantee information
When registering your guarantee please ensure you register the individual components within
the pack and not the pack itself.
Wiring Check list
1. Does the wiring adhere to the relevant Vaillant schematic/wiring diagram?
2. Have all ebus connections been checked for polarity?
3. Have the relevant electrical points been isolated?
General Notes
⬤ Ensure registration of individual components within a pack instead of the pack itself
when registering your guarantee.
⬤ Ensure system wiring adheres to the relevant Vaillant schematic diagram.
⬤ Check eBus polarity on all connections.
⬤ Ensure isolation at relevant electrical points.
Terms and Conditions for Vaillant Schematic Diagrams
⬤ All applicable laws and regulations must be followed.
⬤ The Diagram may be subject to alteration at any time.
⬤ Vaillant is not responsible for any inaccuracies or omissions in the information and drawings
provided to it and upon which it relies when constructing the diagrams.
⬤ Any reproduction of the design must have the prior permission of Vaillant.
⬤ During the planning, design, installation and later use of the system, all operating
instructions must be followed.
⬤ In no circumstances shall Vaillant be liable to you or any other third parties for any loss or
damage (including, without limitation, damage for loss of business or loss of prots) arising
directly or indirectly from your use of or inability to use, this diagram.
⬤ Vaillant makes no representations or warranties of any kind, express or implied about the
completeness, accuracy, reliability or suitability of the diagram for any purpose. Any reliance you
place on the diagram is therefore strictly at your own risk.
⬤ These disclaimers and exclusions shall be governed by and construed in accordance with
English law.

3
Schematic Diagrams
The below systems are the most popular in the UK. For further assistance call Vaillant technical:
0344 693 3133.
Common UK Combination boiler Schematics
Schematic
number Description Page number
20011-1001 Combination Boiler, 1 Radiator Zone 4 - 6
20026-1002 Combination Boiler, 2 Radiator Zone 7 - 9
20029-1003 Combination Boiler, 3 Radiator Zone 10 - 12
20152-1002 Combination Boiler, 1 Radiator & 1 Underoor Zone 13 - 15
20028-1003 Combination Boiler, 2 Radiator & 1 Underoor Zone 16 - 18
Common UK System boiler Schematics
Schematic
number Description Page number
10011-1011 System Boiler, DHW Tank, 1 Radiator Zone 19 - 21
10012-1011 System Boiler, 1 Underoor Zone 22 - 24
10013-1012 System Boiler, DHW Tank, 2 Radiator Zone 25 - 27
10014-1012 System Boiler, DHW Tank, 1 Radiator Zone & 1 Underoor Zone 28 - 30
10262-1013 System Boiler, DHW, 2 Radiator Zone & 1 Underoor Zone 31 - 33
10263-1013 System Boiler, DHW tank, 3 Radiator Zones 34 - 36
10302-2011 Cascade arrangement - hydraulic & electrical 37 - 39

4
20011-1001 - UK VRC 700 - Combi Boiler with 1 Radiator Zone
3
BUS BUS BUS BUS BUS BUS BUS BUS BUS
BUS BUS BUS BUS BUS BUS BUS
3
12p
BUS
BUS BUS
2
12q
12
BUSBUS
1
230 V~
3
HOT WATER OUTLET MAINS INLET
24-38 kW
10j
X41
12m
12

5
12p
3
BUS
PWR
LAN
230 V~
12q
12
230 V~
0 ...24 V 230 V~
230V~
X12
24V=
RT
Burn. L
off N
BUS
- +
X13
X16
X100
X41
X31
0( )
0( )
DCF
RF
AF
FB
ecoTEC Boiler
LNLN
1
RT
X22
LN
X18
12m 12

6
20011- 1001 - Combination Boiler, 1 Radiator Zone
Setting Value
System
Adapt. heat curve: No
System diagram conguration
System diagram 1
Heating
Circuit type: Heating
OT switch-off threshold 30o
Heating curve **Site specic
Maximum temperature 70o(Assumed)
Auto Off mode Set-back
Room temp. mod.: Temp. mod
Zone 1
Zone activated: Yes
Set-back temp. heat. 17°
Zone assignment: VRC 700
DHW circuit
Cylinder Inactive
VRC 700 System Conguration Relevant Settings

7
20026-1002 - UK VRC 700 - Combi Boiler with 2 Radiator Zone
BUS BUS BUS BUS BUS BUS BUS BUS BUS
BUS BUS
2
2
12m
12d
230 V~
3
X41
1
230 V~
3
HOT WATER OUTLET
MAINS INLET
24-38 kW
2
3
9b
12a
ZN2
2
S6
R2
10j
3
9b
BUS BUS BUS BUS BUS BUS BUS BUS BUS BUS
12
ZN1
1
R1

8
230 V~
0 ...24 V 230 V~
230V~
X12
24V=
RT
Burn. L
off N
BUS
- +
X13
X16
X100
X41
X31
0(b)
0(b)
DCF
RF
AF
FB
ecoTEC Boiler
L N L N
1
RT
X22
L N
X18
VR10 ZN2 - RADS
230V~
N L
R1
N L
R2
N L
S1
1 2
S2
1 2
S3
1 2
S4
1 2
S5
1 2
S6
1 2
230 V~
N
R3/R4
N
R5/R6
1 2 1 2
S7
I0 I
_- +
BUS
230V~
0...24V
VR 70
12d
1
12m
3
ZN1 - RAD
12
ZN2 - RAD
12a

9
20026- 1002 - Combination Boiler, 2 Radiator Zones (Direct)
Setting Value
System
Adapt. heat curve: Activated
Congure heat. circ. Zone 1
System diagram conguration
System diagram 1
Cong.: VR70 addr. 1 1
MA VR70, addr. 1 No Function
Heating
Circuit type: Heating
Max limit outs.temp. 30o
Heating curve 2
Minimum temperature **Site specic
Auto Off mode Eco
Room temp. mod. None
Heating 2
Circuit type: Heating
Max limit outs.temp. 30o
Heating curve **Site specic
Minimum temperature 15o
Maximum temperature 45o
Auto Off mode Eco
Room temp. mod. None
Zone 1
Zone activated: Yes
Set-back temp. heat. 17o
Zone assignment: VRC 700
Zone 2
Zone activated: Yes
Set-back temp. heat. 17o
Zone assignment: VR91, addr. 1
VRC 700 System Conguration Relevant Settings

10
20029-1003 - UK VRC 700 - Combi Boiler with 3 Radiator Zone
BUS BUS BUS BUS BUS BUS BUS BUS BUS
BUS BUS
12e
230 V~
3
2
2
12m
X41
1
230 V~
3
HOT WATER OUTLET
MAINS INLET
24-38 kW
2
3
9b
12a
ZN2
2
S3
R2
10j
BUS BUS BUS BUS BUS BUS BUS BUS BUS BUS BUS BUS BUS BUS BUS
2
3
9b
12
ZN1
1
S2
R1
2
3
9b
12a
ZN3
2
S4
R3

11
230 V~
0 ...24 V 230 V~
230V~
X12
24V=
RT
Burn. L
off N
BUS
- +
X13
X16
X100
X41
X31
0( )
0( )
DCF
RF
AF
FB
ecoTEC Boiler
L N L N
1
RT
X22
L N
X18
VR10 ZN1 - RADS
230V~
N L
R1
N L
R2
N L N
R7/R8
N
R9/R10
1 2 1 2
VR 71
N
R11/R12
N
R13
1 2
R3
N L
R4
N L
R5
N L
R6
N L N
230V~
0...24V
S1
1 2
S2
1 2
S3
1 2
S4
1 2
S5
1 2
S6
1 2
S13
I0 I
_- +
BUSS7
1 2
S8
1 2
S9
1 2
S10
1 2
S11
1 2
S12
I0 I
_
230 V~
12e
12m
3
ZN1 - RAD
12
ZN2 - RAD
12a
VR10 ZN3 - RADS
VR10 ZN2 - RADS
ZN3 - RAD
12a

12
VRC 700 System Conguration Relevant Settings
20029- 1003 - Combination Boiler, 3 Radiator Zones (Mixed)
Setting Value
System
Adapt. heat curve: No
Congure heat. circ. Zone 1
System diagram conguration
System diagram 1
Cong.: VR71 3
MA VR71 No Function
Heating 1
Circuit type: Heating
Max limit outs.temp. 30o
Heating curve **Site specic
Minimum temperature 15o
Maximum temperature 75o
Auto Off mode Set-back
Room temp. mod. Temp. mod
Heating 2
Circuit type: Heating
Max limit outs.temp. 30o
Heating curve **Site specic
Minimum temperature 15o
Maximum temperature 75o
Auto Off mode Set-back
Room temp. mod. Temp. mod
Setting Value
Heating 3
Circuit type: Heating
Max limit outs.temp. 30o
Heating curve **Site specic
Minimum temperature 15o
Maximum temperature 45o
Auto Off mode Set-back
Room temp. mod. Temp. mod
Zone 1
Zone activated: Yes
Set-back temp. heat. 17°
Zone assignment: VRC 700
Zone 2
Zone activated: Yes
Set-back temp. heat. 17°
Zone assignment: VR91, addr. 1
Zone 3
Zone activated: Yes
Set-back temp. heat. 17°
Zone assignment: VR91, addr. 2
DHW circuit
Cylinder Inactive

13
20152-1002 - UK VRC 700 - Combi Boiler with 1 Radiator Zone & 1
Underoor Zone
3
BUS BUS BUS BUS BUS BUS BUS BUS BUS
BUS BUS BUS BUS BUS BUS BUS
3
12p
BUS
BUS BUS
2 2
12m
12d
230 V~
3
X41
3
9b
2
UFH WIRING CENTRE 1
12s
5
TO & FROM
OTHER
MANIFOLDS
ZN2
S3
S6
1
230 V~
3
HOT WATER OUTLET
MAINS INLET
24-38 kW
10j
12
ZN1
1
R1

14
230 V~
0 ...24 V 230 V~
230V~
X12
24V=
RT
Burn. L
off N
BUS
- +
X13
X16
X100
X41
X31
0( )
0( )
DCF
RF
AF
FB
ecoTEC Boiler
L N L N
1
RT
X22
L N
X18
VR10 ZN2 - UFH(X)
230V~
N L
R1
N L
R2
N L
S1
1 2
S2
1 2
S3
1 2
S4
1 2
S5
1 2
S6
1 2
230 V~
N
R3/R4
N
R5/R6
1 2 1 2
S7
I0 I
_- +
BUS
230V~
0...24V
VR 70
12d
1
12m
3
ZN1 - RAD
12p
3
12
ZN2 - UFH1
UFH1 WIRING
CENTRE
UFH X DEMAND
12s

15
20152- 1002 - Combi Boiler with 1 Radiator Zone & 1 Underoor Zone
Setting Value
System
Adapt. heat curve: No
Congure heat. circ. Zone 1
System diagram conguration
System diagram 1
Cong.: VR70 1
MA VR70 No Function
Heating 1
Circuit type: Heating
Max limit outs.temp. 30o
Heating curve **Site specic
Minimum temperature 15o
Maximum temperature 45o (Assumed)
Auto Off mode Set-back
Room temp. mod. Temp. mod
Heating 2
Circuit type: Heating
Max limit outs.temp. 30o
Heating curve **Site specic
Minimum temperature 15o
Maximum temperature 45o (Assumed)
Auto Off mode Eco
Room temp. mod. None
Zone 1
Zone activated: Yes
Set-back temp. heat. 17°
Zone assignment: VRC 700
Zone 2
Zone activated: Yes
Zone assignment: Without
DHW circuit
Cylinder Inactive
VRC 700 System Conguration Relevant Settings

16
20028-1003 - UK VRC 700 - Combi Boiler with 2 Radiator Zones
& 1 Underoor Zone
BUS BUS BUS BUS BUS BUS BUS BUS BUS
BUS BUS
12e
230 V~
3
2
2
12m
X41
1
230 V~
3
HOT WATER OUTLET MAINS INLET
24-38 kW
2
3
9b
12a
ZN2
2
S3
R2
10j
BUS BUS BUS BUS BUS BUS BUS BUS BUS BUS
2
UFH WIRING CENTRE 1
12s
5
TO & FROM
OTHER
MANIFOLDS
ZN3
S8
S4
3
9b R3
2
3
9b
12
ZN1
1
S2
R1

17
230 V~
0 ...24 V 230 V~
230V~
X12
24V=
RT
Burn. L
off N
BUS
- +
X13
X16
X100
X41
X31
0( )
0( )
DCF
RF
AF
FB
ecoTEC Boiler
L N L N
1
RT
X22
L N
X18
VR10 ZN1 - RADS
230V~
N L
R1
N L
R2
N L N
R7/R8
N
R9/R10
1 2 1 2
VR 71
N
R11/R12
N
R13
1 2
R3
N L
R4
N L
R5
N L
R6
N L N
230V~
0...24V
S1
1 2
S2
1 2
S3
1 2
S4
1 2
S5
1 2
S6
1 2
S13
I0 I
_- +
BUSS7
1 2
S8
1 2
S9
1 2
S10
1 2
S11
1 2
S12
I0 I
_
230 V~
12e
12m
3
ZN1 - RAD
12
ZN2 - RAD
12a
UFH X DEMAND
12s
UFH 1 DEMAND
VR10 ZN3 - UFH
VR10 ZN2 - RADS
ZN3 - UFH

18
VRC 700 System Conguration Relevant Settings
20028- 1003 - Combi Boiler with 2 Radiator Zones & 1 Underoor Zone
Setting Value
System
Adapt. heat curve: No
Congure heat. circ. Zone 1
System diagram conguration
System diagram 1
Cong.: VR71 3
MA VR71 No Function
Heating 1
Circuit type: Heating
Max limit outs.temp. 30o
Heating curve **Site specic
Minimum temperature 15o
Maximum temperature 75o
Auto Off mode Set-back
Room temp. mod. Thermost
Heating 2
Circuit type: Heating
Max limit outs.temp. 30o
Heating curve **Site specic
Minimum temperature 15o
Maximum temperature 75o
Auto Off mode Eco
Room temp. mod. Thermost
Setting Value
Heating 3
Circuit type: Heating
Max limit outs.temp. 30o
Heating curve **Site specic
Minimum temperature 15o
Maximum temperature 45o
Auto Off mode Eco
Room temp. mod. None
Zone 1
Zone activated: Yes
Set-back temp. heat. 17°
Zone assignment: VRC 700
Zone 2
Zone activated: Yes
Set-back temp. heat. 17°
Zone assignment: VR91, addr. 1
Zone 3
Zone activated: Yes
Set-back temp. heat. 17°
Zone assignment: Without

19
10011-1011 - UK VRC 700 - System Boiler, DHW Tank with 1
Radiator Zone
12q
12
BUSBUS
3
9b
1
230 V~
3
12-37 kW
10j
11
HOT WATER OUTLET
5
12K
12l
8e
MAINS INLET
8c
9b
3
2
R1
ZN1
1
3
BUS BUS BUS BUS BUS BUS BUS BUS BUS
BUS BUS BUS BUS BUS
3
12p
BUS
2 2
12m
12d
230 V~
3
DCF / AF
12
S1
R3/4

20
230 V~
0 ...24 V 230 V~
230V~
X12
24V=
RT
Burn. L
off N
BUS
- +
X13
X16
X100
X41
X31
0( )
0( )
DCF
RF
AF
FB
ecoTEC Boiler
LNLN
1
RT
X22
LN
X18
12m
12k
DHW CYL
12p
3
230V~
N L
R1
N L
R2
N L
S1
1 2
S2
1 2
S3
1 2
S4
1 2
S5
1 2
S6
1 2
230 V~
N
R3/R4
N
R5/R6
1 2 1 2
S7
I0 I
_- +
BUS
230V~
0...24V
VR 70
12d
1
BUS
PWR
LAN
230 V~
12q
12
ZN1 - RAD
VR10 DHW CYL
12