Indirect Danfoss FlatStation HIUs

In the case of Indirect Danfoss FlatStation HIUs, the primary circuit from the central plant room is made hydraulically separate from the apartment space heating by a plate heat exchanger. This maximises the options available to the building operator in terms of circuit working temperatures. Underfloor heating (UFH) systems for example, require lower temperatures than radiator circuits. SAV Systems can supply everything necessary to serve the apartment ‘sealed system’ heating needs, such as a circulator, strainer and expansion vessel.

Indirect FlatStation HIUs also provide Domestic Hot Water (DHW)

Where standing storage is specified, SAV offer the Indirect Danfoss Heat Interface Units FlatStation 3 Series. This has Domestic Hot Water terminal points left available for connection to a DHW storage cylinder.

For installations where Domestic Hot Water is generated on demand, the Indirect Danfoss FlatStation HIU 7 Series comes into its own as it includes 2 separate plate heat exchangers. The Domestic Hot Water at the taps has a closely controlled temperature, and the heating circuits come with integral circulator. Although the equipment inventory is substantial, the Danfoss HIU design has nevertheless managed to accommodate all of this in a well-designed casing.

Space heating controls can readily be accommodated. Signals from room temperature thermostats are routed to the zone valve (enabling isolation of the complete heating circuit) and to the circuit thermostatic valve (enabling modulation to maintain desired value).

Good valve authority is required if the thermostatic controller is to maintain comfortable conditions at all times.

An auxiliary pressure controller across the thermostatic valve ensures this every time.

If you need room thermostats to be included in the FlatStation Heat Interface Units package, these can be part of the SAV Systems room service!

7 Series DS R FI Unit Inside

For further information about Danfoss FlatStations or Pt40/Rt40 valves, please contact us:

By phone: 01483 771910
By e-mail: webenquiries@sav-systems.com

We look forward to hearing from you!

Document Downloads

Please click on the thumbnails below to download the relevant document.

FlatStation Specifications

FlatStation 1 Series Specification

FlatStation 1 Series Specification

FlatStation 5 Series Specification

FlatStation 5 Series Specification

FlatStation 7 Series Specification

FlatStation 7 Series Specification

FlatStation Prepayment Specification

FlatStation Prepayment Valve
& Actuator Specification

Pt40 & Rt40 Specifications / Order Sheets

Pt40 Specification Document

Pt40 Specification Sheet
(Microsoft Word)

Pt40 Specification Document

Rt40 Specification Sheet
(Microsoft Word)

Pt40 Selection and Ordering Sheet

Pt40 Selection and Ordering Sheet
(Rev 4)

Rt40 Selection and Ordering Sheet

Rt40 Selection and Ordering Sheet
(Rev 4)

Design Guides / Technical Datasheets

For access to the documents shown below please fill out and submit the form.

FlatStation Design Guide

FlatStation Design & Product Guide
(Rev 8)

Delta T Design Guide

Delta T Design Guide
(Rev 2)

Pt40 Technical Spec Datasheet Rev 4

Pt40 Technical Datasheet
(Rev 4)

Rt40 Technical Spec Datasheet Rev 3

Rt40 Return Temperature Limiting
Technical Datasheet (Rev 3)

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