Vaillant UK aroTHERM plus Bedienungsanleitung

UK aroTHERM plus Schematics

and Installation Guide

Controls: sensoCOMFORT VRC 720, VR92, VR71

This guide booklet contains information to assist in the design, installation and commissioning of your heat

pump system. This booklet should be used alongside all the relevant manuals for the equipment supplied.

Please read the contents very carefully for a successful installation.

Table of Contents

Heat Pump Pre-Installation Checklist ............................................................................................................ 2

Terms and Conditions for Vaillant Schematic Diagrams ............................................................................ 3

Schematic Diagrams / System Conguration Relevant Settings.............................................................. 4

Commissioning technical guide - for use with sensoCOMFORT VRC720 controller......................... 102

Schematics Legend............................................................................................................................................ 118

Heat Pump Pre-Installation Checklist

Where applicable, the following should be considered before commencing with the installation of

the heat pump:

Description Checked

Heat pump is correctly sized

Full heat loss and design calculations to BS 12831.

Anti-Freeze Protection – Glycol

Without adequate glycol protection down to -15°C the guarantee of the heat pump

will be invalidated. All glycol should pre-mixed in an appropriate container as per

manufacturers’ instructions and pumped into the system. Hand pumps are not

suitable. Glycol recommendations are; Fernox HP5c, Sentinel R700 and R600.

Glycol Discharge Vessel

Required to collect uid discharged via a PRV. Article Number: 0020145563

Y-Strainer / Dirt Filter

Recommended to be tted on the return to the heat pump. The use of a magnetic

lter is also recommended.

DHW Cylinder with Adequate Coil Rating

When non-Vaillant heat pump DHW cylinders are used, it is recommended using

cylinders with coil rating of minimum 4kW per 1m2.

Correctly sized heat emitters for MCS SCoP rating:

Heat emitters may need over sizing depending on the ow temperature from the

heat pump. Underoor heating will need designing with pipe centres correlating to

the ow temperature.

Vaillant Controls

Correct controls are chosen for the operation of heating zones and DHW: See

appropriate schematic.

3rd Party Controls

When utilising input from 3rd party controllers, Vaillant controls will require a ‘NC’

operation for the input terminals; the heat pump will start running when there is an

open circuit across the terminal. Where it is not possible for a 3rd party controller to

provide this, a relay can be used; most recognisable ones being ‘230V 8 pin Relay’

(DPDT).

Fill and isolation points for all circuits are considered.

Hybrid Systems

Relevant heat and electrical meters are considered when claiming RHI.

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.

Schematic Diagrams

The below systems are the most popular system installations in the UK. For further assistance

please call Vaillant Technical on: 0330 100 3540

For the relevant settings in the VRC720 controller, refer to page 20. Care must be taken going

through each setting diligently and adjust as necessary in accordance to system conguration

and property requirements. Only key settings are listed in this document, refer to the VRC720

installation manual for further guidance.

Schematics - 1. Buffer only Page No.

aroTHERM plus with DHW Cylinder, Decoupler, 1 Radiator Zone 6

aroTHERM plus with DHW Cylinder, Decoupler, 1 Underoor Heating Zone (3rd Party) 9

aroTHERM plus with DHW Cylinder, Decoupler, 2 Radiator Zones 12

aroTHERM plus with DHW Cylinder, Decoupler, 1 Radiator Zone, 1 Underoor Heating

Zone (3rd Party)

2. HEX. and Buffer

aroTHERM plus with DHW Cylinder, HEX. Module, Decoupler, 1 Radiator Zone 18

aroTHERM plus with DHW Cylinder, HEX. Module, Decoupler, 1 Underoor Heating

Zone (3rd Party).

aroTHERM plus with DHW Cylinder, HEX. Module, Decoupler, 2 Radiator Zones 24

aroTHERM plus with DHW Cylinder, HEX. Module, Decoupler, 1 Radiator Zone, 1

Underoor Heating Zone (3rd Party).

3. HEX. only

aroTHERM plus with DHW Cylinder, HEX. Module, 1 Radiator Zone 30

aroTHERM plus with DHW Cylinder, HEX. Module, 1 Underoor Heating Zone (3rd

Party)

aroTHERM plus with DHW Cylinder, HEX. Module, 2 Radiator Zones 36

aroTHERM plus with DHW Cylinder, HEX. Module, 1 Radiator Zone, 1 Underoor

Heating Zone (3rd Party)

4. Hydraulic Station and Buffer

aroTHERM plus with DHW Cylinder, Hydraulic Station, Decoupler, 1 Radiator Zone 42

aroTHERM plus with DHW Cylinder, Hydraulic Station, Decoupler, 1 Underoor Heating

Zone (3rd Party)

aroTHERM plus with DHW Cylinder, Hydraulic Station, Decoupler, 2 Radiator Zones 48

aroTHERM plus with DHW Cylinder, Hydraulic Station, Decoupler, 1 Radiator Zone,

1 Underoor Heating Zone (3rd Party)

5. Hydraulic Station, HEX. and Buffer

aroTHERM plus with DHW Cylinder, Hydraulic Station, HEX. Module, Decoupler, 1

Radiator Zone

aroTHERM plus with DHW Cylinder, Hydraulic Station, HEX. Module, Decoupler, 1

Underoor Heating Zone (3rd Party).

aroTHERM plus with DHW Cylinder, Hydraulic Station, HEX. Module, Decoupler, 2

Radiator Zones

aroTHERM plus with DHW Cylinder, Hydraulic Station, HEX. Module, Decoupler, 1

Radiator Zone, 1 Underoor Heating Zone (3rd Party).

6. Hydraulic Station and HEX.

aroTHERM plus with DHW Cylinder, Hydraulic Station, HEX. Module, 1 Radiator Zone 66

aroTHERM plus with DHW Cylinder, Hydraulic Station, HEX. Module, 1 Underoor

Heating Zone (3rd Party)

aroTHERM plus with DHW Cylinder, Hydraulic Station, HEX. Module, 2 Radiator Zones 72

aroTHERM plus with DHW Cylinder, Hydraulic Station, HEX. Module, 1 Radiator Zone, 1

Underoor Heating Zone (3rd Party).

7. No modules

aroTHERM plus with DHW Cylinder, 1 Radiator Zone 78

aroTHERM plus with DHW Cylinder, 1 Underoor Heating Zone (3rd Party) 81

aroTHERM plus with DHW Cylinder, 2 Radiator Zones 84

aroTHERM plus with DHW Cylinder, 1 Radiator Zone, 1 Underoor Heating Zone (3rd

Party)

8. uniTOWER, Buffer

aroTHERM plus with uniTOWER, Decoupler, 1 Radiator Zone 90

aroTHERM plus with uniTOWER, Decoupler, 1 Underoor Heating Zone (3rd Party) 93

aroTHERM plus with uniTOWER, Decoupler, 2 Radiator Zones 96

aroTHERM plus with uniTOWER, Decoupler, 1 Radiator Zone, 1 Underoor Heating Zone

(3rd Party)

Bespoke schematic request

aroTHERM plus with DHW Cylinder, Decoupler, 1 Radiator Zone

7f 9d

10j

MA1

BUS BUS BUS BUS BUS BUS BUS BUS

BUS BUS BUS BUS BUS BUS

12p

BUS

BUS BUS

12m

DCF/AF

10i

12b

B A

BUS BUS

BUSBUSBUS

10e

BUS

BUS BUS

BUS BUS BUS BUS BUS BUS

2a 230 V~ 3

UV1

230 V~ 317

HOT WATER OUTLET

12K

12l

MAINS INLET

SEC. CIRCULATION

3e 3

210c

SP1

MA2

12p 12

POST BFR



DHW CYL

12m

24V=

S21

24V=

S20

BUS

- +

X206

X200

NL3L2L1

0 ...24 V 230 V~

Heat Pump

230 V~

DHW / HTG

230 V~ 0 ...24 V

EVU

2 1

VF1 SP1

2 1

DCF/AF

AF IO DCF

BUS

- +

2 1N 1 2

UV1

Auf Zu

MA2

N L

MA1

N L

230V~

N L

230V~

N L

EVU

DCF / AF

SP1

VF1

BUS

UV1

MA2

MA1

230 V~

12b Heatpump Interface

SEC. CIRC.

aroTHERM plus with DHW Cylinder, Decoupler, 1 Radiator Zone

Setting Value

Installation

Adapt. heat curve Deactivated

Hybrid manager Bivalence pt

Heating bivalence point -20°

DHW bivalence point: -20°

Alternative point Off

ESCO Heating off

Back-up boiler Off

Basic system diagram conguration

Basic system diagram code 10

HP control module conguration

MO 2 Circulation

pump

Circuit 1

Circuit type Heating

OT switch-off threshold 30o

Heat curve **Site specic

Min. target ow

temperature

15o

Max. target ow

temperature

45o

Set-back mode Normal

Room temp. mod. Expanded

Zone 1

Cylinder Yes

Zone assignment Control

Domestic hot water

Cylinder Active

Anti-legio. day **User

preference

Anti-legio. time **User

preference

Cylinder charging offset 15 K

Cyl. charg. anti-cycl. time 5 min

aroTHERM plus with DHW Cylinder, Decoupler, 1 Underfloor Heating

Zone (3rd Party)

7f 9d

10j

MA1

12m

DCF/AF

EVU

UFHX DEMAND

UFH WIRING CENTRE 1

UFHX FLOW

UFHX RETURN

12s 5

10i

12b

B A

BUS BUS

BUS

10e

BUS

BUS BUS

BUS BUS BUS BUS BUS BUS

2a 230 V~ 3

UV1

230 V~ 317

HOT WATER OUTLET

12K

12l

MAINS INLET

SEC. CIRCULATION

3e 3

210c

SP1

MA2

UFH X DEMAND

12s

UFH 1 DEMAND

POST BFR



DHW CYL

24V=

S21

24V=

S20

BUS

- +

X206

X200

NL3L2L1

0 ...24 V 230 V~

Heat Pump

230 V~

12m

DHW / HTG

230 V~ 0 ...24 V

EVU

2 1

VF1 SP1

2 1

DCF/AF

AF IO DCF

BUS

- +

2 1N 1 2

UV1

Auf Zu

MA2

N L

MA1

N L

230V~

N L

230V~

N L

EVU

DCF / AF

SP1

VF1

BUS

UV1

MA2

MA1

230 V~

12b Heatpump Interface

SEC. CIRC.

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