REV 2 © SAV 08/2017

Domestic Hot Water (DHW) control

Danfoss IHPT Self-Acting controller*

Valve authority = 1

Primed DHW control with 8°C set back

Integral differential pressure control

Pressure Absorber

Heating control

Danfoss AVPL Self-Acting differential pressure control valve (DPCV)*

Grundfos pump EEI rating ≤ 0.20

Operating Dp up to 4.5bar

Safety stat on UFH units

Plate Heat Exchangers

Danfoss Micro PlateTM Heat Exchanger* for improved water flow

35% reduced pressure drop

10% improved efficiency

*Separate datasheet available

Long operating life

Self-Acting mechanical control

Instantaneous shut off of Heat Network supply water through PHEX after tapping

Strainers on Heat Network supply, heating return and cold water pipes

Stainless steel PHEX and pipes

Insulation

Full EPP insulation, including backplate

Fully Insulated First Fix Valve Set* available

H 690 x W 528 x D 235

Compact and easily fit into wall setbacks

High resilience and durability

Commissioning & Maintenance Integral filling loop

Pipe configuration options

Enclosure designed for easy access

Open bypass protection feature available

DHW - IHPT Self-Acting mechanical controller

• Rapid response to

DHW demand

Heating - AVPL Self-Acting mechanical controller

• Self-Acting differential

pressure control valve

• Hydraulic balancing

of Heat Network

LEAN HEAT NETWORKS

MAKING HEAT NETWORKS WORK

700

Flow [l/h]

Time [sec]

600

500

400

300

200

100

00 1

Domestic Hot Water (DHW)Heat Network Supply (HNS)

2 3 4 5 6

IHPT closing time afterDHW tapping

Instantaneous, Self-Acting, Pressure and Temperature controlledHIU with integral bypass control - Indirect, Fully Insulated

Danfoss FlatStation - 7 Series DS (R-FI)

Datasheet

DHW: Capacity examples

FlatStation type

VVX-I-R-FI

DHW capacity

**

[kW]

DHW capacity

[l/min]

Heat Network Supply

[°C]

Heat NetworkReturn

[°C]

CW/ DHW

[°C]

Heat Network flow rate

[l/m]

Heat Network pressure

loss * [kPa]

VVX-I-R-FI 1-x ~4012.5 60 20.0 10/50 12.7 30

15 70 16.5 10/50 11.5 25

VVX-I-R-FI 2-x ~6015 60 18.6 10/50 14.8 30

21 70 15.9 10/50 15.9 30

Danfoss FlatStation - 7 Series DS (R-FI)

Heating: Capacity examples

FlatStation type

VVX-I-R-FI

HTG load

**

[kW]

Heat Network Supply

[°C]

Heat Network Return

[°C]

Heating circuit

[°C]

Heat Network

flow rate [l/m]

Min. diff. pressure

Heat Network*

[kPa]

Flow rate

heating circuit [l/m]

Residual pump

pressure

[kPa]

VVX-I-R-FI x-1 UFH3.5

60 35.3 45/35 2.1 15 5.1 20

VVX-I-R-FI x-2 RAD 70 34.1 60/30 1.4 15 1.7 20

VVX-I-R-FI x-2 UFH7

60 35.4 45/35 4.1 20 10.1 15

VVX-I-R-FI x-2 RAD 70 35.9 60/30 3 25 3.4 20

VVX-I-R-FI x-3 UFH10

60 35.2 45/35 5.9 30 14.5 20

VVX-I-R-FI x-3 RAD 70 35.9 60/30 4.3 30 4.8 20

VVX-I-R-FI x-4 UFH 12.5 60 35.2 45/35 7.4 35 18.1 20

VVX-I-R-FI x-4 RAD 15 70 35.0 60/30 6.3 30 7.2 25

VVX-I-R-FI x-5 RAD 20 70 35.0 60/30 8.4 35 9.6 25

SAV (UK) Limited, Scandia House, Boundary Road, Woking, Surrey GU21 5BX

Phone: 01483 771910 Email: info@sav-systems.com

Web: www.sav-systems.com LinkedIn: www.linkedin.com/company/sav-systems REV 2 © SAV 08/2017

34 100 60 60 60 60

65 60

1 2 (3) (4) 5 6

37 4

45

4565

Front view Side view

Circuit diagram - example

DHW

F

E 24

A Plate heat exchanger HE B Plate heat exchanger DHWE Fully Insulated Enclosure for

First Fix Valve Set (optional)F Flushing bypass with

isolation and test points

L Border of deliveryM Electrical wiring box 1 Ball valve2B Double check valve, WRAS

4 Safety valve7 Thermostatic valve

9 Strainer10 Circulation pump HE

DCW

HN Supply

HN Return

14 Sensor pocket, heat meter20 Filling/drain valve24 Delivered loose with unit26 Manometer31 Di�erential pressure controller 38 Expansion vessel39 Connection closed (for DHW recirculation)41B Fi

(optional)tting piece, heat meter 3/4” x 110 mm.

41C Fitting piece, Shut-o� valve (optional)48 Air escape, manual 60 Safety stat for UFH units62B Pressure Absorber w/non-return valve 63 Sieve69 On/o� valve74 IHPT

HE Flow

HE Return

Note: Capacity examples are for guidance only. Please contact us for project specific sizing.Units with larger outputs available.*Heat meter not included **kW output depends on system’s parameters

Technical Parameters

Nominal pressure: PN 10

PN 16 available on enquiry

HN supply temperature: Tmax

= 120 °C

Min DCW static pressure: pmin

= 1 bar

Max differential pressure: Dpmax

= 4.5 bar

Brazing material (PHEX): Copper

Weight incl. enclosure: 28 kg

Including packing

Insulation enclosure: Anthracite grey EPP

Thermal conductivity

0.038-0.040 W/(m2*K)

Electrical supply: 230 V AC

Dimensions (mm): H 690 x W 528 x D 235

With insulation

Connection sizes: G ¾ ” (int. thread)

All connections

Connections:1 Heat Network (HN) Supply

2 Heat Network (HN) Return

3 Standard Heating (HE) Flow

4 Standard Heating (HE) Return

(3)Alternative Heating (HE) Flow

(4)Alternative Heating (HE) Return

5 Domestic Hot Water (DHW)

6 Domestic Cold Water (DCW)

7 Pressure relief valve

Options:- White lacquered steel front cover

- DHW recirculation pump

- DHW recirculation safety valve

- Prepayment valve

- Heat meter

- Fully Insulated Enclosure for

First Fix Valve Set

- 2 Zone heating module

- Room thermostat

- PT40 pre-settable pressure

independent TRV sets

* Distances from edge of metal back-plate, with cover tolerances are ±6mm

Pipe configurations: