70-40-energy-meter_0Low return temperatures are a key characteristic of a well-designed and well-commissioned system!

Soft Landings refers to the continuing involvement by designers, builders and commissioning specialists after a building reaches practical completion. The later stages of a Soft Landings campaign should include the following:

Enables operators to spend time on understanding interfaces and systems before occupation.

Initial aftercare:
Calls for continuing involvement by the client, designers and construction team, to maximise the benefit from experience gained and occupant satisfaction surveys.

Years 1 – 3 Extended aftercare:
To close the loop between design expectation and reality, and complete the virtuous circle to the benefit of future projects.

A return temperature of 40°C should be maintained throughout the year, which means that continuous monitoring and regulation is required by the building’s operator.

It is important that sytem elements be tested and optimised during all seasons of the year, so that the building energy systems continue to provide good performance throughout.

To find out more about Low Return Temperatures, please contact SAV Systems using the details below or going to the Contact Us page.

SAV have put together a CIBSE-accredited CPD Seminar, which explores the main issues arising from a 70/40 approach to design. The agenda for this is given under the CPD Seminars tab further along this website. The 70/40 method can be expected to have far-reaching implications, and discussions which are a normal part of each Seminar will sharpen your insight into developments in this field.

If you would like to explore the potential offered by the 70/40 method to any building services project, please feel free to provide some information via the Contact Us page, or by phone / e-mail. We would then assess how best to develop the ideas further, either by CPD Seminar, round table discussion, site visit or other communication.

We look forward to hearing from you.

Please contact SAV Systems using the details below or by going to the Contact Us page.

By phone:

01483 771910

By e-mail: info@sav-systems.com

And we’ll be happy to help!

Document Downloads

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CHP Service Details and Costs

CHP Service XRGI 6G

Service Details

CHP Service XRGI 9G

Service Details

CHP Service XRGI 13 15G

Service Details
XRGI 13G / 15G

CHP Service XRGI 20G

Service Details

CHP Service Gas Safe

Gas Safe CHP Certification

Manufacturers Warranty & Maintenance Documents

XRGI 6G - 20G Warranty Service & Premium Service Agreement

Warranty Service &
Premium Service Agreement

Design Guides / Datasheets

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CHP Design GuideLoadTracker Design Guide (PDF)

LoadTracker CHP
Design Guide

Delta T Design Guide

Delta T
Design Guide

XRGI 6 Technical Data


Loadtracker XRGI 9 Datasheet


Loadtracker XRGI 15 Datasheet


Loadtracker XRGI 20 Datasheet


CHP XRGI Hydraulic Solutions Datasheet

Hydraulic Solutions

Loadtracker Q20/Q80 Datasheet

Q20/Q80 Heat Distributor

CHP Thermal Store Management

Technical Bulletin
CHP Thermal Store Management